bluuebunny/crossref_metadata_2025 huggingface dataset:
Different Composite Behaviours under Blast Loading
Authors: Voisin Arthur , Pariente Jonathan , Lemercier Sébastien , Soulat Damien , Boussu François
Published: July 2019

Landmines and Improvised Explosive Devices are known to be major threats for the coalition armies in operation. In order to protect the soldiers from their effects, armored vehicle manufacturers developed some blast protective solutions. However, these solutions often reduce the vehicles’ mobility and payload capacity because of their shape or weight. Fiber Metal Laminates (FML) look like promising light weight blast protective solutions as they associate low areal densities with good bending rigidity and a high number of impedance mismatches which tend to attenuate the shock wave propagation. In this paper, three FML composed of a back plate of armored steel, a middle composite panel named A, B or C and a thin front plate made of mild steel were subjected to a blast loading. The maximum dynamic deformation of each target was recorded during the blast test. A macroscopic post-mortem analysis exhibits three similar behaviors of the back plates but very different permanent deformation patterns of the composite panels. A CT-scan of each panel was then realized to explain these three patterns and, based on these analysis, some hypothesis were made to improve the blast resistance of the B and C panels.
Damage Investigation on the Upper Skin Composite Panels of Eurofighter Aircraft
Authors: Buonsanti Michele
Published: July 2019

The fighter planes of the fifth generation, as compared to the fourth, has increased the composite materials use since high mechanical properties enhance the operational performance. However, composite materials present some negative characteristics such as damage progression, leading to delamination or matrix failure. This phenomenon often results in an unknown behaviour. This paper deals with the delamination phenomenon after casual low energy impacts. On different specimens, we performed different investigations through dynamic characterization, followed by modal parameters elaboration. After completing the first phase an opportune simulation model by FEM was developed to compare the obtained results whose values were in agreement with the real case.
Effects of tebufenozide on the assemblage of moths (Lepidoptera) in an operational spruce budworm (Lepidoptera: Tortricidae) suppression programme
Authors: Westwood Richard , Saunders Diana , Westwood Alana R. , Holliday Neil J.
Published: July 2019

Tebufenozide (Mimic) kills Lepidoptera larvae that ingest it. Aerial applications of tebufenozide were made against spruce budworm (Choristoneura fumiferana(Clemens)) (Lepidoptera: Tortricidae) in boreal forest in Manitoba, Canada, in 1999 and 2000. In 2000 and 2001, moths in sprayed and unsprayed plots were sampled with light traps; trapping was supplemented by foliage sampling. Relative to unsprayed plots, catches of spruce budworm moths in plots sprayed in 1999 and 2000 were depressed in 2000, but not in 2001. Host tree defoliation was reduced in 2000 by 1999 and 2000 applications; the 2000 application reduced numbers of spruce budworm larvae in 2000 and 2001. Multivariate analysis revealed negative effects of tebufenozide application on two species of non-target moths in 2000 and no negative effects in 2001. Negatively affected species have larvae feeding in the tree canopy at the time of spray application. Higher catches of non-target species in sprayed treatments were observed for three species in 2000 and two species in 2001. We conclude that tebufenozide can depress the numbers of spruce budworm larvae and provide foliage protection during the year of application and the following year, and that negative effects on non-target species are detectable for about 15 months after application.
Moisture-resistant sealing materials for downhole HPHT electrical feedthrough package
Authors: Xia Hua , Settles Nelson , DeWire David
Published: July 2019

A bismuth oxide based multi-component glass system, xH3BO3-yBi2O3-(1-x-y-δ)MO-δ·REO with MO=TiO2, BaO, ZnO, Fe2O3, etc., and lanthanum series based rare earth oxides (REO), for making downhole high-pressure and high-temperature (HPHT) electrical feedthrough package, has been developed using high-temperature melt-quenching and sintering technologies. By properly controlling phase structures in the material manufacturing processes, the obtained sealing materials have shown moisture-resistant properties in their monoclinic and tetragonal mixed phase structures, but strongly hydrophobic properties in their covalent bond tetragonal phase. The sealed electrical feedthrough packages have been evaluated under boiling water immersion and 200°C/30,000PSI water-fluid simulated downhole harsh environments. The post measurement has demonstrated to be greater than 1.0×1014 Ω electrical resistance. This paper will show that such a high-bonding-strength and high-insulation-strength sealing material could be used to seal electrical feedthroughs and connectors for 300°C/30,000PSI downhole and subsea wireline, logging while drilling (LWD), and measurement while drilling (MWD) tools' signal, data, and electrical power transmissions.
Bonding strength of Cu/Cu joints using sintering process of micro-sized Cu particles for high-temperature application
Authors: Nishikawa Hiroshi , Liu Xiangdong
Published: July 2019

Recently the new SiC power device provides the possibility to develop the next-generation power conversion circuit with high efficiency and high power density. The SiC power device can operate with significant lower power loss and higher operating temperature, which contributes to miniaturization and higher performance of power modules. To assemble these power modules, the high temperature packaging technology such as die attach process is needed. As a die attach process, we have proposed a simple oxidation-reduction bonding (ORB) process to achieve good Cu-to-Cu joints using micro-sized Cu particles. In this study, the effect of the oxidation-reduction process on the surface morphology of Cu particles was evaluated by SEM observation, and the shear strength of the Cu-to-Cu joints was investigated. As a result, the bonding using micro-sized Cu particles was successfully achieved and the shear test results showed that the joints by ORB process had a shear strength of more than 20 MPa.
Fully Integrated Sensor Electronics for Inductive Proximity Switches Operating up to 250 °C
Authors: Braun Sebastian , Kordas Norbert , Utz Alexander , Kappert Holger , Kokozinski Rainer
Published: July 2019

In this paper we present an integrated circuit for inductive proximity switches which requires very few external components and can operate under ambient temperatures up to 250 °C. The sensor system is realized in the Fraunhofer IMS H035 technology which was specifically developed for high temperature operation. The core of the circuit is built of an oscillator which is equipped with a peak detector and readout electronics for threshold detection, references and voltage regulators to provide the necessary internal voltages as well as extensive trimming capabilities to compensate for temperature effects. The circuit can be operated from a single dc-voltage supply from 12 to 35 Volts. Calibration data can be stored in an internal EEPROM. Switching distance and hysteresis are programmable for adapting the circuit to a wide range of different detector coils and sensor geometries. Two output signals are provided that can be independently set to function as push/pull or single ended switches with programmable polarity. The only external components required are blocking capacitors for supply voltage stabilization and the LC resonator circuitry. Reverse polarity protection and special high temperature ESD and clamping structures are also fully integrated on the silicon die.
Heterogeneity in the aetiology of diabetes mellitus in young adults
Authors: Sahoo Saroj Kumar , Zaidi Ghazala , Vipin Valam Puthussery , Chapla Aaron , Thomas Nihal , Yu Liping , Asthana Pranjul , Bhatia Eesh
Published: July 2019

Background & objectives:

In contrast to Caucasians of European origin, the aetiology of diabetes mellitus (DM) in young adults in other ethnic groups, including Indians is likely to be heterogeneous and difficult to determine. This study was undertaken to determine the aetiology of diabetes in young Indian adults using a protocol-based set of simple clinical and investigation tools.

Methods:

In this prospective study, 105 Indian young adults with diabetes (age at onset 18-35 yr; duration <2 yr) were studied for a period of 1-3 years. Pancreatic imaging, fasting C-peptide, islet antibodies (against glutamic acid decarboxylase, tyrosine phosphatase and zinc transporter-8) and mitochondrial A3243G mutational analysis were performed in all patients. Four patients were screened for maturity-onset diabetes of the young (MODY) using next-generation sequencing.

Results:

Type 1 and type 2 diabetes mellitus (T1DM and T2DM) were equally frequent (40% each), followed by fibrocalculous pancreatic diabetes (FCPD, 15%). Less common aetiologies included MODY (2%), mitochondrial diabetes (1%) and Flatbush diabetes (2%). There was considerable phenotypic overlap between the main aetiological subtypes. Elevated islet antibodies were noted in 62 per cent of T1DM patients [positive predictive value (PPV) 84%; negative predictive value (NPV) 78%] while low plasma C-peptide (<250 pmol/l) was present in 56 per cent of T1DM patients [PPV 96% (after excluding FCPD), NPV 72%]. Using these tests and observing the clinical course over one year, a final diagnosis was made in 103 (99%) patients, while the diagnosis at recruitment changed in 23 per cent of patients.

Interpretation & conclusions:

The aetiology of diabetes in young adults was heterogeneous, with T1DM and T2DM being equally common. FCPD was also frequent, warranting its screening in Indian patients. Testing for islet antibodies and C-peptide in this age group had good PPV for diagnosis of T1DM.
Prevalence of substance use disorders in Punjab
Authors: Chavan B.S. , Garg Rohit , Das Subhash , Puri Sonia , Banavaram Arvind Anniappan
Published: July 2019

Background & objectives:

Substance use disorders are a major public health concern in Punjab. However, reliable estimates of prevalence of substance use disorders are not available for the State. The present study reports estimates of prevalence of substance use disorders in Punjab, conducted as part of National Mental Health Survey, India.

Methods:

Using multistage stratified random cluster sampling, 2895 individuals from 719 households of 60 clusters (from 4 districts of Punjab) were interviewed. Mini International Neuropsychiatric Interview and Fagerstrom nicotine dependence scale were used to assess substance use disorders.

Results:

The sample comprised almost equal numbers of males and females. Nearly 80 per cent had less than or equal to high school education, and 70 per cent were married. The weighted prevalence of alcohol and other substance use disorders was 7.9 and 2.48 per cent, respectively. The prevalence of tobacco dependence was 5.5 per cent; 35 per cent households had one person with substance use disorder. The prevalence was highest in the productive age group (30-39 yr), urban metro and less educated persons. The prevalence of alcohol and other substance use disorders was much higher in Punjab as compared to other States where survey was done. Tobacco dependence was lowest in Punjab. Majority (87%) of the persons with substance use disorders did not suffer from any other mental disorder. Treatment gap was 80 per cent.

Interpretation & conclusions:

Punjab has a high burden of substance use disorders. The estimates will help clinicians and policymakers to plan the strategies against the menace of substance use disorders effectively.
Pattern of cognitive deficits in vascular dementia
Authors: Sengupta Prasenjit , Ganguly Jacky , Pal Sandip , Ghosal Malay
Published: July 2019

Background & objectives:

There is a paucity of literature on the cognitive profiles of vascular dementia (VaD) in India. The current study was undertaken to investigate the pattern of cognitive deficits in patients with VaD.

Methods:

Fifty patients fulfilling the Diagnostic and Statistical Manual of Mental Disorders-IV criteria of dementia and National Institute of Neurological Disorders and Stroke - Association Internationale pour la Recherche et l'Enseignement en Neurosciences criteria for VaD were assessed using Mini Mental State Examination, Kolkata Cognitive Screening Battery and other relevant tests including magnetic resonance imaging of brain.

Results:

Twenty patients had small vessel dementia, whereas the least common was haemorrhagic dementia in four patients. In patients with small vessel dementia, apart from memory, all patients had problem in attention and executive function, whereas 12 patients had visuoconstructional deficit and eight patients had language problem. In a total of 12 patients with large vessel dementia, apart from memory, executive dysfunction and visuoconstructional deficit were noted in 10 patients, whereas attention deficit was noted in eight patients. Attention was found to be more involved in small-vessel dementia than large-vessel dementia though all had memory impairment (P<0.01).

Interpretation & conclusions:

Small vessel dementia was the commonest subtype of VaD in our study. Memory, attention and executive functions were predominantly affected in patients with VaD. Attention was significantly more involved in small vessel dementia than large vessel dementia. Further studies with large sample size need to be done in different regions of the country.
What makes non-cirrhotic portal hypertension a common disease in India? Analysis for environmental factors
Authors: Goel Ashish , Ramakrishna Banumathi , Zachariah Uday , Sajith K.G. , Burad Deepak K. , Kodiatte Thomas A. , Keshava Shyamkumar N. , Balasubramanian K.A. , Elias Elwyn , Eapen C.E.
Published: July 2019

In India, an unexplained enteropathy is present in a majority of non-cirrhotic intrahepatic portal hypertension (NCIPH) patients. Small intestinal bacterial contamination and tropical enteropathy could trigger inflammatory stimuli and activate the endothelium in the portal venous system. Groundwater contaminated with arsenic is an environmental factor of epidemic proportions in large areas of India which has similar consequences. Von Willebrand factor (a sticky protein) expressed by activated endothelium may promote formation of platelet microthrombi and occlusion of intrahepatic portal vein branches leading to NCIPH. Environmental factors linked to suboptimal hygiene and sanitation, which enter through the gastrointestinal (GI) tract, predispose to platelet plugging onto activated endothelium in portal microcirculation. Thus, NCIPH, an example of poverty linked thrombophilia, is a disease mainly affecting the lower socio-economic strata of Indian population. Public health measures to improve sanitation, provide clean drinking water and eliminate arsenic contamination of drinking water are urgently needed. Till such time as these environmental factors are addressed, NCIPH is likely to remain 'an Indian disease'.
Evaluation of various culture techniques for identification of hookworm species from stool samples of children
Authors: Nongmaithem Onila , Shantikumar T. , Dutta Sudip
Published: July 2019

Background & objectives:

Different coproculture techniques have been developed for culturing the hookworm (HW) larvae for morphological identification in the resource-limited settings. The objective of this study was to compare the performances of Harada-Mori culture (HMC), agar plate culture (APC) and modified APC (MAPC) of HW positive stool specimens for identification of HW species in East Sikkim.

Methods:

This prospective study was done in East Sikkim from May 2015 to May 2016. Stool and blood samples were collected from paediatric patients with gastrointestinal symptoms. The HW positive stool specimens by microscopy were subjected to HMC, APC and MAPC techniques to harvest HW larvae. Stoll's dilution egg count for determining egg intensity and blood parameters were performed in all the 12 HW-positive patients.

Results:

Twelve of the 180 samples were found positive for HW by microscopy and predominance of Necator americanus (75%) over Ancylostoma duodenale (25%) was observed. Blood parameters results showed high pack cell volume (PCV) values in 78.6 per cent, anaemia in 75 per cent and high eosinophil count in most patients. Stoll's dilution egg count showed moderate infection in 66.6 per cent, light and heavy infections in 16.7 per cent each.

Interpretation & conclusions:

Our results showed that APC yielded 100 per cent results and was easier to perform in the laboratory compared to MAPC and HMC techniques.
Plasma ghrelin levels after laparoscopic sleeve gastrectomy in obese individuals
Authors: Sharma Garima , Nain Prabhdeep S. , Sethi Pulkit , Ahuja Ashish , Sharma Sarit
Published: July 2019

Background & objectives:

Ghrelin is an orexigenic gut hormone expressed by the gastric fundus. Laparoscopic sleeve gastrectomy (LSG) procedure involves resection of the gastric fundus leading to a decreased appetite and weight loss. This study was undertaken to determine the levels of plasma ghrelin after sleeve gastrectomy in obese patients.

Methods:

The study was conducted on 90 morbidly obese patients [body mass index (BMI) >40 kg/m2] and severely obese patients (BMI >35/kg/m2) who underwent sleeve gastrectomy. The patients were followed up for six months. Weight loss parameters and plasma ghrelin levels were assessed pre- and postoperatively.

Results:

A significant weight loss and decrease in BMI were observed at three and six months postoperatively. A significant decrease in plasma ghrelin levels over six months of follow up postoperatively was also seen.

Interpretation & conclusions:

These preliminary findings indicated inhibition of ghrelin production after LSG leading to a decrease in the plasma ghrelin levels within a few days of surgery and sustainable weight loss in obese patients.
Observability and unique continuation inequalities for the Schrödinger equation
Authors: Wang Gengsheng , Wang Ming , Zhang Yubiao
Published: July 2019

We present several observability and unique continuation inequalities for the free Schrödinger equation in the whole space. The observations in these inequalities are made either at two points in time or one point in time. These inequalities correspond to different kinds of controllability for the free Schrödinger equation. We also show that the observability inequality at two points in time is equivalent to the uncertainty principle given in [21].
Use Cases for Communication Between Plug-in Vehicles and the Utility Grid
Authors:   Hybrid - EV Committee
Published: July 2019

This SAE Information Report establishes Use Cases for communication between plug-in electric vehicles (PEVs) and the electric power grid, for energy transfer and other applications.
Dor e qualidade de vida em pacientes submetidos a cirurgia da coluna vertebral
Authors: Nascimento Rafaela dos Santos , Leão Lucas Fialka de Castro , Macedo Débora Carvalho de Oliveira , Carvalho Raimundo Miranda de , Neves Dilma Costa de Oliveira
Published: July 2019

Objetivo: Analisar comparativamente os scores de dor e qualidade de vida em pacientes submetidos a cirurgia da coluna vertebral na Clínica dos Acidentados, Belém – PA, no ano de 2016. Método: Trata-se de um estudo analítico intervencional quali-quantitativo prospectivo, que utilizou as tabelas de avaliação de qualidade de vida (SF36) e de dor (VAS) que foram respondidas pelos pacientes no período pré-operatório e após 2 meses do procedimento cirúrgico, e um questionário estruturado para registro das variáveis inerentes ao perfil sócio demográfico do paciente. Resultados: A maioria dos entrevistados pertence ao sexo masculino, na faixa etária de 51 a 60 anos, casados, com o primeiro grau de escolariedade e ocupação de serviços gerais, raça parda, procedentes de Belém e obesos. Houve prevalência de não fumantes, sedentários e de pessoas que ingerem bebida alcoólica. Ocorreu melhoria na qualidade de vida dos pacientes submetidos a cirurgia da coluna vertebral, princ ipalmente nos domínios de saúde mental e da vitalidade. Conclusão: Os pacientes submetidos a cirurgia da coluna vertebral apresentaram melhoria na qualidade de vida, principalmente nos domínios de saúde mental e vitalidade.
Serum Cytokine Levels in Term and Preterm Deliveries Relating to the Periodontal Health of Mothers: A Pilot Study
Authors: Gorzo Istvan , Novák Tibor , Orvos Hajnalka , Kovács Mariann , Bóka Barbara , Kele Beatrix
Published: July 2019

Background

The aim of the study was to evaluate serumlevels of interleukin-1, beta (IL-1β) and tumor necrosis factoralpha (TNF-α) at birth and compare the values in case of preterm birth and normal birth groups of mothers considering the mothers’ periodontal status.

Materials and methods

Blood samples from 81 women (preterm birth, 41 women, and term birth, 40 women) were collected within half an hour of after delivery. Serum levels of IL-1β and TNF-α were measured. Periodontal status was characterized by bleeding on probing (BOP) and probing depth (PD).

Results

The frequency of BOP differed significantly between preterm and term groups; however, mean PD did not show a significant difference. Serum IL-1β levels were significantly higher in the preterm birth group. The levels TNF-α were slightly bigger in the term birth group, the difference was significant. The rank correlation showed a significant negative relationship between serum IL-1β and TNF-α level and birth weight and the length of pregnancy, and also between BOP frequency and the length of pregnancy.

Conclusion

Within the limitations of the study, it was found that IL-1β and TNF-α levels were higher when the delivery occurred preterm and the birth weight was smaller; however, a significant increase of cytokines in the serum in connection with maternal periodontal disease was not detected. Periodontics of mothers was not associated with preterm birth in the sample.

How to cite this article

Radnai M, Novák T, Orvos H, Kovács M, Bóka B, Kele B, Gorzó I. Serum Cytokine Levels in Term and Preterm Deliveries Relating to the Periodontal Health of Mothers: A Pilot Study. Int J Experiment Dent Sci 2015;4(2):109-115.
Pyogenic Granuloma in Eight-Year-Old Child Associated with Bone Loss and Displacement of Tooth Bud: A Unique Case
Authors: Jain Mayuri , Singhal Sachin , Goyal Megha , Sharma Bhuvnesh
Published: July 2019

Pyogenic granuloma (PG) is one of the inflammatory reactive hyperplasia affecting the oral tissues. It is a relatively common mucocutaneous lesion seen in the oral cavity. It is predominantly seen in young females. Soft tissue enlargements of the oral cavity often represent a diagnostic challenge, because a diverse group of pathologic processes can produce such lesions. An enlargement may represent a variation of normal anatomic structures, inflammation, developmental anomalies, cyst and neoplasm. Here, we report an exceptional case of PG of unknown etiology in 8-year-old male child patient in alveolar crest associated with bone resorption and displacement of tooth bud.

How to cite this article

Jain M, Singhal S, Goyal M, Sharma B. Pyogenic Granuloma in Eight-Year-Old Child Associated with Bone Loss and Displacement of Tooth Bud: A Unique Case. Int J Experiment Dent Sci 2015;4(2):134-136.
Microstrain of Human Root Dentin after Chelating Agents Application
Authors: Nasution Abdillah Imron
Published: July 2019

Objective

To determine the effect of ethylene diamine tetra acetic acid (EDTA) and RcPrep to microstrain of human root dentin.

Materials and method

Fifteen extracted human premolars were sectioned at the cementoenamel junction using a diamond bur disk. Every group was then sectioned horizontally in the third cervical, third middle and third apical to have total of 45 specimens. Based on the test solutions used, specimens were divided randomly into three groups: (1) the EDTA group: 0.05 ml of 17% EDTA for 15 minute (n = 15), (2) the RcPrep group, 0.05 ml of 15% EDTA-urea peroxide-carbowax for 15 minutes (n = 15), and (3) the control group, 1 ml of 0.9% saline for 15 minutes (n = 15). All specimens were prepared for the determination of microstrain of root dentin using X-ray diffraction (XRD) analysis. The microstrain of root dentin calculated using the equation ? = Br cos?/sin? then statistically analyzed using regression test.

Result

Analysis of regression between control and treatment groups were significant (p < 0.05). The microstrain was significantly greater with 17% EDTA when compared with 15% RcPrep. In addition, based on XRD result, all specimens showed same patterns as apatite groups. The pattern of RcPrep group showed better material than EDTA group.

Conclusion

EDTA and RcPrep can contribute to improvements of microstrain of root dentin. In comparing these properties, the RcPrep showed lower effect than EDTA.

How to cite this article

Nasution AI. Microstrain of Human Root Dentin after Chelating Agents Application. Int J Experiment Dent Sci 2016;5(1):11-15.
Prevalence of Gingival Recession and associated Risk Factors among 18–45-Year-Old Who Attended a Dental Practice in Greece
Authors: Chrysanthakopoulos Nikolaos Andreas
Published: July 2019

Aim

To assess the prevalence of gingival recession and to investigate possible associations among gingival recession and periodontal and epidemiological variables in a sample of Greek adults in a general dental practice.

Materials and methods

A sample of 640 Greek adults was examined clinically and interviewed regarding several periodontal and epidemiological variables. Collected data included demographic background (age, gender, level of education), oral hygiene habits, and smoking status. Clinical examination included the recording of dental plaque and supragingival calculus presence, gingival status, and gingival recession. In addition, the association between gingival recession and the following variables was assessed: gender, smoking status, calculus presence, plaque control methods, plaque index, gingival index, and level of education. Multiple linear regression analysis was carried out to model the association of gingival recession with the mentioned potential risk factors.

Results

The overall prevalence of gingival recession was 62.7%. The performance of multiple linear regression analysis indicated that smoking (p = 0.001), plaque index (p = 0.021), gingival index (p < 0.0001), plaque control methods (p < 0.001), and level of education (p < 0.001) were the most important associated factors of gingival recession.

Conclusion

The present study indicates that an association exists between gingival recession and presence of gingival inflammation, inadequate oral hygiene habits, and smoking.

How to cite this article

Chrysanthakopoulos NA, Saini R. Prevalence of Gingival Recession and associated Risk Factors among 18–45-Year-Old Who Attended a Dental Practice in Greece. Int J Experiment Dent Sci 2016;5(1):28-33.
A Randomized Controlled Trial and Radiographic Evaluation of Adjunctive Periodontal Treatment with Calcium and Vitamin D Supplementation
Authors: Bundit Arpapan , Yotnuengnit Pusadee , Wisetsin Sirinun , Chittacharoen Apichart
Published: July 2019

Aim

The objective of this study was to use clinical parameters, digital subtraction analysis, and computer intensity measurement to evaluate the effect of calcium and vitamin D supplementation in adult periodontitis patients with vertical bony defect after initial therapy.

Materials and methods

A total of 31 systemically healthy patients with moderate to severe chronic periodontitis and normal serum calcium level were included. The most obvious proximal vertical bony defect was selected in each patient as an area of interest (AOI). Subjects received initial periodontal therapy. They were randomized into two groups. The test group (n= 17) received calcium (600 mg twice daily) and vitamin D (0.25 µg once daily) supplements for 6 months. The control group (n= 14) received placebos. At baseline and 6 months, probing pocket depth (PPD), clinical attachment level (CAL), and standardized vertical bitewing radiographs were recorded for the AOI.

Results

A greater percentage of patients in the test group (64.7%) than in the control group (35.7%) gained bone according to both radiographic evaluation methods. At baseline and 6 months, no significant intragroup or intergroup differences in PPD and CAL were observed. Slightly greater PPD reduction and CAL gain were noted in the test group.

Conclusion

Periodontal healing of vertical bony defects was better among patients who used calcium and vitamin D supplements than among control patients. Although the difference was not statistically different between the groups, the test group tended toward more improvement.

How to cite this article

Bundit A, Yotnuengnit P, Wisetsin S, Chittacharoen A. A Randomized Controlled Trial and Radiographic Evaluation of Adjunctive Periodontal Treatment with Calcium and Vitamin D Supplementation. Int J Experiment Dent Sci 2016;5(1):50-55.
Nonsurgical Approach in Periodontal Therapy for a Patient with Metabolic Syndrome
Authors: Malwatte Uthpala S , Tilakaratne Aruni
Published: July 2019

Aim

The aim of this article is to describe the effect nonsurgical periodontal therapy can have on the improvement in the glycemic and lipid indices of patients with metabolic syndrome (MS).

Background

Combination of noncommunicable diseases has become increasingly common among the people at present. Metabolic syndrome is a combination of dyslipidemia, diabetes mellitus (DM), obesity, and hypertension. Periodontal disease (PDD) is also a common entity among many people. The heightened chance of PDD in the diabetic patient is well established. Among the treatment modalities for PDD, nonsurgical therapy plays a major role. Reduction of the major causative factors of PDD can bring about a massive improvement of the disease through this approach.

Case description

Periodontal management of an adult patient with MS via nonsurgical periodontal therapy alone had shown dramatic improvement of periodontal as well as general health of the patient at the completion of the treatment.

Conclusion

Improvement of glycemic indices of diabetic patients has been shown with periodontal treatment in conjunction with medical treatment.

Clinical Significance

Value of a dental professional in diagnosing metabolic diseases through detection of periodontal and other dental complications cannot be underestimated. A well-executed nonsurgical periodontal therapy alone can bring about a massive improvement of the PDD condition as well as other metabolic diseases, such as DM, emphasizing the importance of proper collaboration among the dental surgeons with the medical practitioner.

How to cite this article

Malwatte US, Jayasinghe VP, Tilakaratne A. Nonsurgical Approach in Periodontal Therapy for a Patient with Metabolic Syndrome. Int J Experiment Dent Sci 2016;5(1):64-68.
Intrusion of Overerupted Molars by Corticotomy and Fixed Orthodontic Appliances
Authors: Souza Maria LAH de , Soares Rodrigo V , Zenóbio Elton G , Pithon Matheus M , Oliveira Dauro Douglas
Published: July 2019

In this article, a review of the literature regarding the use of selective alveolar corticotomies (SAC) combined with orthodontic treatment was conducted, and the results of its use in a patient with overerupted maxillary 1st molars are described. Adequate intrusion was obtained within a short period of time, the protocol avoided the necessity of removal of sound tooth structure for crown lengthening, endodontic treatment, and full crown prosthetic restorations. Therefore, the obtained results indicate that SAC/orthodontic use is efficient in the intrusion of overerupted 1st molars and suggest its potential use in the treatment of other malocclusions.

How to cite this article

de Souza MLAH, Soares RV, Zenóbio EG, Pithon MM, Oliveira DD. Intrusion of Overerupted Molars by Corticotomy and Fixed Orthodontic Appliances. Int J Experiment Dent Sci 2016;5(1):78-82.
Position of Mental Foramen among Saudi Population: A Radiographic Study
Authors: Bokhari Kamran , Shahrani Abdul A , Mustafa Abdel B , Hdban Yhya , Saleh Mohammad , Mofareh Abdullah
Published: July 2019

The mental foramen is defined as the entire funnel-like opening in the lateral surface of the mandible at the terminus of the mental canal. The location of the mental foramen is of high significance while giving nerve block technique for adequate pain control to perform surgical procedures. Many studies have been conducted across the world, and a wide range of literature has been published on this topic. This study aims to determine the position of the mental foramen in southern Saudi Arabian population. This would act as a guide while anesthetizing the mental nerve and also in preserving the nerve while performing surgical procedures in this region.

How to cite this article

Bokhari K, Shahrani AA, Mustafa AB, Hdban Y, Saleh M, Mofareh A. Position of Mental Foramen among Saudi Population: A Radiographic Study. Int J Experiment Dent Sci 2016;5(2):109-112.
Management of Tooth Wear: An Interdisciplinary Approach
Authors: Leung Tsz M , Botelho Michael G , Yang Yanqi , Ho Edward HT
Published: July 2019

Aims

This case report aims to describe a conservative interdisciplinary approach to restore generalized tooth wear complicated with malalignment of teeth.

Introduction

Tooth wear is the surface loss of dental hard tissue, i.e., usually multifactorial in origin, excluding other than caries, trauma, or developmental disorder. Severe tooth wear impact the appearance, comfort, function, or longevity of the tooth. Prosthodontic management of patients with tooth wear has been well documented, although prosthodontic treatment is designed to correct minor malocclusion, patients with moderate-to-severe malocclusion accompanied by generalized tooth wear may require preprosthetic orthodontic intervention.

Case report

This case report describes a 47-year-old male patient with generalized tooth wear complicated with lack of interocclusal space and malalignment of teeth. Preventive measures were carried out to address the etiological factors of tooth wear. After orthodontic treatment, definitive restoration was placed in reorganized occlusion at an increased vertical dimension, which restored esthetic and function.

Conclusion

In this clinical report, generalized tooth wear with insufficient space for restoration, complicated by malalignment of teeth, was managed by way of an interdisciplinary approach which allowed a conservative full-mouth rehabilitation. After orthodontic treatment, a reorganized restorative approach was undertaken at an increased vertical dimension, providing an esthetic and functional solution. An occlusal night guard was provided to protect the dental restorations.

Clinical Significance

Interdisciplinary approach allows a conservative management for patient with tooth wear complicated by malalignment of teeth.

How to cite this article

Leung TM, Botelho MG, Yang Y, Ho EHT. Management of Tooth Wear: An Interdisciplinary Approach. Int J Experiment Dent Sci 2016;5(2):139-145.
Concealment of Amputation: Silicone Finger Prosthesis
Authors: Jain Priyanka , Tomar Brajendra S , Chandu GS , Singh Shubhra , Khatri Monika
Published: July 2019

Hand deformities affects function and esthetics. Moreover, for the majority of patients, the loss of a finger can lead to psychological problems. This report describes the fabrication of a silicone finger prosthesis for a patient after an accident. The finger prosthesis was retained by a vacuum effect on the stump. The room temperature vulcanizing (RTV) silicone material was used to provide function and esthetics. The finger prosthesis offered psychological, functional, and rehabilitative advantages for the patient.

How to cite this article

Tomar BS, Chandu GS, Singh S, Sapat M, Khatri M, Jain P. Concealment of Amputation: Silicone Finger Prosthesis. Int J Experiment Dent Sci 2016;5(2):146-150.
Resorbable vs Non-resorbable Barriers with Immediate Implantation after Functional Loading under Overdenture
Authors: Elkholy Sahar , Elcharkawi Hussein
Published: July 2019

Aim

The aim was to evaluate the bone height and bone density of the peri-implant area with resorbable and non-resorbable barriers as guided tissue regeneration with immediate implants after functional loading under mandibular overdenture.

Materials and methods

Eight male patients (the age ranged between 45 and 60 years old), who had the upper jaw as fully edentulous and the lower jaw with only two remaining canines and indicated for extractions, were selected. Each patient received two immediate implants after extraction of remaining canines and were divided into two groups: Group I: The left side received non-resorbable barrier and group II: The right side received resorbable barrier. Radiographic evaluation was done for marginal bone height loss and bone density immediately after overdenture insertion and 6 months later.

Results

Mean marginal bone loss with non-resorbable barriers was 0.7 ± 0.16 mm and with resorbable barrier was 0.6 ± 0.1 mm, with nonsignificant difference between the two groups. There was significant increase in bone density with resorbable barrier after 6 months of functional loading, with significant difference between the two groups.

Conclusion

There was no difference in marginal bone height changes between resorbable and non-resorbable barriers with immediate implant under overdenture. However, after 6 months of functional loading, bone density increased with the use of resorbable barrier over non-resorbable barriers. Using of resorbable barrier with immediate implantation did not require second stage surgery for removing the barrier as with the non-resorbable one.

How to cite this article

Elkholy S, Elcharkawi H. Resorbable vs Non-resorbable Barriers with Immediate Implantation after Functional Loading under Overdenture. Int J Experiment Dent Sci 2017;6(2):74-79.
Verification of the Accuracy of Electronic Mandibular Movement-recording Devices: An in vitro Investigation
Authors: Ahuja Swati , Scarbecz Mark , Balch Heath , R Cagna David
Published: July 2019

Aims and objectives

To determine the accuracy of an opto-electronic pantograph (Freecorder Bluefox, Dentron) in locating a known transverse horizontal axis (THA); To determine the accuracy of the opto-electronic pantograph and the mechano-electronic pantograph (Cadiax Compact 2, Whip Mix Corp) in recording preset condylar control values; and additionally, compare the accuracy of the opto-electronic and mechano-electronic pantographs with each other.

Materials and methods

A fully adjustable articulator (Denar D5A, Whip Mix Corp) was employed as a mock patient. True condylar control settings and condylar control values determined by each recording device were documented and statistically analyzed using 2-sample independent t-tests (p < 0.05).

Results

Statistical data analysis indicated that (1) the opto-electronic pantograph did not accurately locate the known THA; (2) the condylar control values registered by opto-electronic and the mechano-electronic pantographs were statistically different from the preset condylar control values; and (3) different degrees of accuracy existed between the opto-electronic pantograph and mechano-electronic pantograph.

Conclusion

Errors up to 5 mm in the location of the THA may not have much clinical significance. The majority of articulator condylar control settings predicted by the opto-electronic and mechano-electronic pantographs investigated in this study were statistically different. Clinically, the predicted mean values for the lateral condylar inclination (LCI) and progressive mandibular lateral translation (PMLT) were within 5° of the known mock patient settings. However, the medial wall angulation and immediate side shift values obtained from the opto-electronic instrument suffered from large errors.

Clinical implication

Practical goals for complex restorative dentistry often include attaining accurate occlusal relationships, simulating the patient's mandibular movements in the laboratory using three-dimensional instrumentation and achieving desired occlusal contacts and relationships. Clinicians may rely on mandibular motion-recording devices to render accurate and useful information. Cost of purchase of electronic mandibular motion-recording devices (opto-electronic and mechano-electronic recorders), their accuracy, and time required for training should be compared with the use of conventional pantographs. The use of electronic pantograph may lead to savings in time and efforts over conventional pantograph and interocclusal records.

How to cite this article

Balch H, Cagna DR, Ahuja S, Scarbecz M. Verification of the Accuracy of Electronic Mandibular Movement-recording Devices: Anin vitroInvestigation. Int J Experiment Dent Sci 2017;6(2):84-94.
Twin Occlusion in Maxillary Overdenture with Access Posts and O-ring Attachments in the Rehabilitation of Hemimandibulectomy Patient
Authors: Kumar KV Arun , Legha Virender S , Saini Dinesh K , Wadhwa Vinay N , Sarkar Abir , Chahar Pramod K
Published: July 2019

Discontinuity of mandible limits the balance of the lower face and leads to decreased mandibular function by deviation of residual segment toward surgical site. Delay in the initiation of mandibular guidance therapy may be due to varied reasons like postsurgical morbidities, tight wound closure, radiation therapy, flap necrosis, and others, which may result in an inability to achieve normal maxillomandibular relationships. When such deviated mandible is opposed to maxillary complete denture, then the rehabilitation would be of greater challenge. This clinical report presents rehabilitation of hemimandibulectomy defect with twin occlusion in maxillary overdenture with access posts and O-ring attachments.

How to cite this article

Kumar KVA, Legha VS, Saini DK. Wadhwa VN, Sarkar A, Chahar PK. Twin Occlusion in Maxillary Overdenture with Access Posts and O-ring Attachments in the Rehabilitation of Hemimandibulectomy Patient. Int J Experiment Dent Sci 2017;6(2):105-107.
Unidirectional Valved Patch Closure of Ventricular Septal Defect with Eisenmenger Physiology
Authors: Kiran Usha , Hasija Suruchi
Published: July 2019

Pulmonary hypertension in left-to-right shunt lesions, such as ventricular septal defect (VSD), patent ductus arteriosus, atrial septal defect (ASD) and atrioventricular canal defect is termed hyperkinetic pulmonary hypertension. Hyperkinetic pulmonary hypertension is usually reversible if the cause is treated before development of permanent changes in pulmonary arterioles. A unidirectional flap valve (UVP) VSD patch closure is a good alternative in children with large VSD with Eisenmenger physiology. The technique of unidirectional valved patch VSD closure obviates the need for extracorporeal membrane oxygenation and nitric oxide ventilation in patients who are at risk of pulmonary hypertensive crises postoperatively.

How to cite this article

Kumar P, Hasija S, Kiran U. Unidirectional Valved Patch Closure of Ventricular Septal Defect with Eisenmenger Physiology. J Perioper Echocardiogr 2015;3(2):62-65.
Perioperative Transesophageal Echocardiographic Diagnosis of Membranous Interventricular Septal Aneurysm in Two Patients
Authors: Negi Sunder L , Puri Goverdhan Dutt , Singh Rana S
Published: July 2019

Aneurysms of interventricular septum are a rare anomaly usually seen as an incidental finding on echocardiography. Rarely, they can cause right ventricular outflow tract obstruction. They can present in patients having other cardiac lesions. Diagnosis of interventricular septal aneurysm is not straightforward. They can be confused with sinus of valsalva aneurysm or ventricular septal defect on transthoracic echocardiography. Transesophageal echocardiography (TEE) provides a better alternative to delineate the interventricular septal aneurysm. We describe the TEE diagnosis of membranous interventricular septal aneurysm in two dissimilar patients who presented for cardiac surgery at our cardiac center.

How to cite this article

Dutta V, Negi SL, Puri GD, Singh RS. Perioperative Transesophageal Echocardiographic Diagnosis of Membranous Interventricular Septal Aneurysm in Two Patients. J Perioper Echocardiogr 2016;4(1):14-16.
Transesophageal Echocardiographic Evaluation of Crisscross Heart with Atrioventricular Valve Regurgitation for Fontan Procedure
Authors: Saxena Anita , Talwar Sachin , Bhardwaj Vandana , Makhija Neeti
Published: July 2019

Crisscross heart (CCH) is a rare congenital cardiac malformation characterized by crossing of systemic and pulmonary venous blood streams at atrioventricular (A-V) level due to an apparent twisting of the heart about its long axis. In the literature, perioperative evaluation of CCH by transesophageal echocardiography (TEE) has not been described. Here we report a rare case of CCH, post Glenn procedure with A-V valve regurgitation, evaluated by TEE for valve repair/replacement followed by completion of Fontan surgery.

How to cite this article

Makhija N, Bhardwaj V, Saxena A, Talwar S. Transesophageal Echocardiographic Evaluation of Crisscross Heart with Atrioventricular Valve Regurgitation for Fontan Procedure. J Perioper Echocardiogr 2016;4(1):27-29.
Accuracy of Periodontal Screening and Recording as a Screening Tool for Assessing Periodontal Status and Estimation of Periodontal Treatment Needs and Its Comparison with Routine Periodontal Examination
Authors: Ambadi Sahla , Pudukulangara Anuroopa
Published: July 2019

Aims

Conventional periodontal examination methods used for the determination of periodontal disease and assessment of disease severity, though precise and effective for diagnostic purposes, are time-consuming. The current study is aimed at checking the accuracy of periodontal screening and recording (PSR) as a diagnostic index in assessing periodontal diseases and to compare it with routine periodontal examination.

Materials and methods

Study population consisted of 100 subjects in which both PSR and routine periodontal examination and recording are carried out.

Results

It was observed that lesser time was required to record PSR index (mean: 2.20 minutes) when compared to routine periodontal examination (mean: 15.28 minutes). Also the probing depth and bleeding on probing had similar findings in all subjects examined (100%), whereas a 10 and 7% difference was seen with respect to presence of calculus and/ or defective margins.

Conclusion

It can be concluded that PSR is accurate enough as a diagnostic index and can be used as a time saving screening tool for periodontal examination.

How to cite this article

Ambadi S, Pudukulangara A. Accuracy of Periodontal Screening and Recording as a Screening Tool for Assessing Periodontal Status and Estimation of Periodontal Treatment Needs and Its Comparison with Routine Periodontal Examination. J Health Sci Res 2015;6(2):33-36.
Esthetic Management of Melanin Hyperpigmentation using Diode Laser: A Report of Four Cases
Authors: Reddy Samba Siva , Ayubi Amera , Ramachandra Vinaya K
Published: July 2019

Gingival hyperpigmentation occurs as triangular/linear/diffuse patches of dark brown to black or light brown to yellow color. Pigmentation may be seen at any age irrespective of sex, although it varies among different races and population. Melanin pigmentation is caused by melanin granules in gingival tissue, which are produced in melanosomes of melanocytes. The ever-increasing demand for esthetics has made individuals conscious of any dark patches of pigmentation, especially on the facial aspects of the anterior gingiva. Melanin hyperpigmentation although medically insignificant is an esthetic concern that is aggravated in individuals with excessive gingival display. Among the plethora of treatment modalities used for depigmentation, lasers have yielded promising results. This case series highlights the effectiveness of diode laser in the management of gingival melanin pigmentation.

How to cite this article

Reddy SS, Ayubi A, Ramachandra VK. Esthetic Management of Melanin Hyperpigmentation using Diode Laser: A Report of Four Cases. J Health Sci Res 2015;6(2): 56-59.