bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dentine sensitivity risk factors: A case–control study
Authors: Mafla Ana Cristina , Lopez-Moncayo Luis Fernando 
Published: February 2016

ABSTRACT
Objective: To identify the clinical and psychological risk factors associated with dentine hypersensitivity (DH) in order to provide an early diagnosis and preventive therapy. Materials and Methods: A nested case–control study was design between 2011 and 2012. A total of 61 DH cases and 122 controls participated in this investigation. Cases and controls were matched for sex, group of age and socioeconomic status in a ratio of 1:2. DH to different stimuli such as cold, heat, acid, and sweet was asked in patient interviews, and dental examinations were used to detect DH. Clinical and psychological risk factors such as dental hygiene, periodontal disease, acid diet, alcohol consumption, psychological stress, and psychopathological symptoms were inquired. Psychological stress was measured through the PSS-10 and psychopathological symptoms were evaluated by SCL-90-R in Spanish. Descriptive and univariate binary logistic regression analysis were performed to estimate the association between clinical and psychological risk factors and the presence of DH. Results: Toothpaste abrasivity (odds ratio [OR] 1.881, 95% confidence interval [CI] 1.010–3.502, P = 0.045), gingival recession (OR 2.196, 95% CI 1.020–4.728, P = 0.041), and periodontal therapy (OR 5.357, 95% CI 2.051–13.993, P < 0.001) were associated with DH. Subjects with perceived stress (OR 1.211, 95%, CI 0.518–2.833, P = 0.658), obsessive-compulsive (OR 1.266, 95%, CI 0.494–3.240, P = 0.623) and hostility (OR 1.235, 95%, CI 0.507–3.007, P = 0.642) symptoms had a clinical greater odd of DH. Conclusion: Oral hygiene products and periodontal conditions are important risk factors for DH. Individuals with perceived stress, obsessive-compulsive, and hostility symptoms may increase a clinical risk for this entity. Targeting to dental counseling focused on oral hygiene products, periodontal therapy and a psychological evaluation may be promising in DH prevention.
Management of myofascial pain by therapeutic ultrasound and transcutaneous electrical nerve stimulation: A comparative study
Authors: Rai Shalu , Ranjan Vikash , Misra Deepankar , Panjwani Sapna 
Published: February 2016

ABSTRACTObjective: The present comparative study was aimed to determine the effectiveness of Th US and TENS in the management of myofascial pain in TMD patients. Materials and Methods: The present randomized comparative study was on 90 patients who were further assigned in three different groups each having 30 patients; Group I was healthy control patients, Group II was receiving Th US therapy, and Group III was receiving TENS therapy. All the 90 patients were further evaluated for maximum inter incisor subjective evaluation regarding muscle pain, impediment to daily life, massage impression on visual analog scale (VAS) scale, and intensity and duration used in Th US massage. Results: The masseter muscle thickness in control group was 12.00 (standard deviation [SD] ±1.1) mm when compared with TMD patient of 13.00 (SD ± 1.1) mm before treatment. Statistical significant findings on VAS score of muscle pain, impediment to daily life, and massage impression were observed in Th US. After treatment, the anechoic areas disappeared or were reduced in Th US group by 95.6% and in TENS by 74.4%. Conclusion: Th US appeared to be subjectively better which was related to VAS score of massage impression, muscle pain, and impediment to daily life after treatment as well as sonographically related to existence of anechoic areas.
Effect of at-home bleaching with different thickeners and aging on physical properties of a nanocomposite
Authors: Gouveia Thayla Hellen Nunes , Públio Juliana do Carmo , Ambrosano Glaucia Maria Bovi , Paulillo Luís Alexandre Maffei Sartini , Aguiar Flávio Henrique Baggio , Lima Débora Alves Nunes Leite 
Published: February 2016

ABSTRACT
Objective: To evaluate the influence of 16% carbamide peroxide (CP) containing different thickeners on the physical characteristics of a nanocomposite resin submitted or not to accelerated artificial aging (AAA). Materials and Methods: One hundred samples were randomly distributed into two groups (n = 50) according to AAA. Each group was divided into 5 subgroups (n = 10) depending on the bleaching/thickener treatment: CP + carbopol, CP + natrosol, carbopol, natrosol, and no treatment (control). The physical properties tested were color (ΔE), gloss (GU), mean roughness (Ra), and Knoop microhardness (KHN). The resin surface was performed with atomic force microscopy (AFM). Statistical Analysis: The color (variable Δ E) was assessed with two-way analysis of variance (ANOVA) and additionally with Tukey's and Dunnett's tests, the roughness values were submitted to Kruskal–Wallis, Dunn's, and Mann–Whitney's tests. Data on gloss and KHN were submitted to two-way ANOVA and Tukey's test (α = 0.05). Results: Among the physical properties evaluated, CP + carbopol promoted a reduction in composite microhardness only, thus differing statistically from the controls. As for CP + natrosol, such a change was not observed. The aging process reduced all the physical properties, thus differing statistically from the nonaging group. CP + carbopol increased the roughness and decreased the gloss of aged resins, whereas natrosol reduced gloss only, which differed statistically from the controls. Conclusions: AFM showed evidence of the loss of organic matrix and exposure to load particles in the aged samples. Therefore, the replacement of carbopol with natrosol provided maintenance of the composite microhardness following bleaching. The aging process reduced the physical properties evaluated, and some changes were enhanced by the application of bleaching.
A 3-year randomized clinical trial evaluating two different bonded posterior restorations: Amalgam versus resin composite
Authors: Kemaloglu Hande , Pamir Tijen , Tezel Huseyin 
Published: February 2016

ABSTRACT
Objective: To compare the performance and postoperative sensitivity of a posterior resin composite with that of bonded amalgam in 40 (n = 20) large sized cavities and to evaluate whether resin composite could be an alternative for bonded amalgam. Materials and Methods: This was a randomized clinical trial. Twenty patients in need of at least two posterior restorations were recruited. Authors randomly assigned one half of the restorations to receive bonded amalgam and the other half to composite restorations. Forty bonded amalgams (n = 20) and composites (n = 20) were evaluated for their performance on modified-US Public Health Service criteria and postoperative sensitivity using visual analogue scale (VAS) for 36-months. Results: Success rate of this study was 100%. First clinical alterations were rated as Bravo after 1 year in marginal discoloration, marginal adaptation, anatomical form, and surface roughness for both amalgam and composite. At the 3rd year, overall “Bravo” rated restorations were 12 for bonded amalgam and 13 for resin composites. There were no significant differences among the VAS scores of composites and bonded amalgams for all periods (P > 0.05) except for the comparisons at the 3rd year evaluation (P < 0.05). Conclusions: Within the limitation of this study, both resin composite and bonded amalgam were clinically acceptable. Postoperative sensitivity results tend to decrease more in composite restorations rather than amalgams. Therefore, it was concluded that posterior resin composite can be used even in large sized cavities.
Comparative evaluation of superoxide dismutase, alpha-tocopherol, and 10% sodium ascorbate on reversal of shear bond strength of bleached enamel: An in vitro study
Authors: Kavitha Mahendran , Selvaraj Sharmila , Khetarpal Ambica , Raj Aruna , Pasupathy Shakunthala , Shekar Shobana 
Published: February 2016

ABSTRACT
Objective: The aim of this study was to investigate the neutralizer effect of antioxidant agents on the bond strength of bleached enamel. Materials and Methods: Sixty enamel slabs were prepared from 60 freshly extracted maxillary central incisors and were divided into six groups. The negative control group received no bleaching treatment and the other groups were bleached with 35% carbamide peroxide (Opalescence Quick; Ultradent, South Jordan, USA). In Group II, composite was built immediately after bleaching and cured without any antioxidants. In Group III, bleached specimens received composite build ups delayed by 1 week. In Groups IV, V, and VI bleached specimens received applications of superoxide dismutase (SOD), sodium ascorbate (SA), and tocopherol solutions, respectively, for 10 min. Following composite bonding, the micro shear bond strength (μSBS) was measured at a speed of 1 mm/min in universal testing machine. Statistical Analysis Used: The μSBS values of all the groups were analyzed using the analysis of variance followed by Tukey honestly significant difference post-hoc test. Results: Bonding of composites to unbleached group (Group I) exhibited the highest mean SBS values and among the antioxidant-treated groups, the highest SBS values were seen with SOD (Group IV) treated samples (23.0040 ± 4.30565 MPa). Conclusions: Application of SA, alpha-tocopherol, and SOD can effectively reverse the bond strength with bleached enamel. SOD gave a comparatively more promising reversal of bond strength than SA and alpha-tocopherol, and deserves further studies.
Evaluation of the effects of modified bonded rapid maxillary expansion on occlusal force distribution: A pilot study
Authors: Uzuner Fatma Deniz , Odabasi Hande , Acar Secil , Tortop Tuba , Darendeliler Nilufer 
Published: February 2016

ABSTRACT
Objective: To evaluate the effects of modified bonded rapid maxillary expansion (RME) on occlusal force distribution. Materials and Methods: The sample included 12 patients (7 girls and 5 boys; mean age: 13.1 years) at the permanent dentition stage with bilateral posterior cross-bite. The patients were treated with a modified bonded RME appliance, activated twice a day. The study was terminated when the palatal cusps of the maxillary posterior teeth were occluding with the buccal cusps of the mandibular posterior teeth. The postretention period was 3 months. The T-Scan III device was used to analyze the percentages of occlusal force distribution, and records were taken at the pretreatment (T1), the postreatment (T2), and the postretention (T3) periods. Wilcoxon signed rank test was used for statistical analyses. Results: Incisors were most frequently without contact, followed by canines. The highest forces were seen in the second and first molar regions. A significant decrease was seen in total occlusal force during treatment (T1–T2); however, during retention, the force returned to its initial value, and no significant differences were found (T1–T3). No differences were found between right and left sides and in occlusal forces of the teeth in all time periods. Conclusion: The use of modified bonded RME decreases the total occlusal forces during the treatment period, but it does returns to its initial value after the postretention period.
Changes in jawbones of male patients with chronic renal failure on digital panoramic radiographs
Authors: Dagistan Saadettin , Miloglu Ozkan , Caglayan Fatma 
Published: February 2016

ABSTRACT
Objective: To compare the existence of gonial cortical bone thickness, antegonial index, mandibular canal bone resorption and gonial angle values and pathologies like ground-glass appearance in jawbones and brown tumor in male patients undergoing dialysis due to chronic renal failure and men from the healthy control group on panoramic radiographs. Materials and Methods: Panoramic radiographs were taken from 80 male individuals in total (40 normal and 40 dialysis patients). Values obtained from the right and left sides of the mandible were summed and their means were calculated. Gonial cortical thickness, antegonial index and gonial angle values were assessed with the Student's t-test, mandibular canal wall resorption with the Chi-square test, and pathologies such as ground-glass appearance and Brown tumor as “available” or “not available.” Results: Statistically significant differences were observed among the antegonial index (P < 0.001), gonial cortical bone thickness (P < 0.001), and gonial angle (P < 0.001) values of study and control groups. Besides, mandibular canal wall resorption (P < 0.001) was also statistically significant. In the study group, pathologies with ground-glass appearance were encountered in mandible, but no radiographic findings were observed similar to brown tumor. Conclusions: Compared to the control group, decreases were found in gonial cortical bone thicknesses, antegonial index values, mandibular canal wall resorption, and gonial angle values of the patients receiving dialysis treatment due to chronic renal failure. Although it is not statistically significant, pathology with ground-glass appearance was detected in a patient, but no pathologies like brown tumor were observed. These findings from patients with chronic renal failure must be evaluated in panoramic radiography.
Cytotoxicity evaluation of Clinacanthus nutans through dimethylthiazol diphenyltetrazolium bromide and neutral red uptake assays
Authors: Vajrabhaya La-Ongthong , Korsuwannawong Suwanna 
Published: February 2016

ABSTRACTObjectives: The aim of this study was to compare the results of dimethylthiazol diphenyltetrazolium bromide (MTT) and neutral red uptake (NRU) assays of Clinacanthus nutans cytotoxicity. Materials and Methods: Mouse fibroblast (L929) cells were exposed to 0.01%, 0.1%, 0.25%, and 0.5% (W/V) C. nutans in a 96-cluster-well-culture plate for 24 h. The cell viability after exposure to C. nutans was determined by MTT and NRU assays in separate tissue culture plates. The two assays were compared through an intra-class correlation coefficient (ICC) analysis. Results: No significant differences in cytotoxicity were noted between the two assays (P > 0.05). The ICC values for agreement between two assays for the negative and positive control groups and C. nutans concentrations of 0.01%, 0.1%, 0.25%, and 0.5% were 0.84, 0.83, 0.77, 0.68, 0.74, and 0.71, respectively. Conclusion: In general, the MTT and NRU assays performed similarly, exhibiting moderate to good correlation for the evaluation of the cytotoxicity of C. nutans.
Maria Ossó school. Sitges. Barcelona. España
Authors: NsARQUITECTES Estudi 
Published: February 2016

<p>El proyecto consiste en la construcción de un nuevo centro de educación primaria en el municipio de Sitges. El solar se sitúa al sur del casco urbano, en el barrio de Can Pei, junto a la vía del tren, en una parcela prácticamente horizontal.</p>
Centro de disminuidos físicos de Lérida. España
Authors: NsARQUITECTES Estudi 
Published: February 2016

<p>El solar de intervención, con 3169 m2, está situado en una zona periférica de la capital leridana, en el barrio de Balàfia. Su geometría trapezoidal responde al planeamiento y a la radialidad que genera la rotonda de la Rambla de Pardinyes con la Avenida de Balàfia.</p>
El hormigón como superficie en el espacio
Authors: Carrasco Rouco David 
Published: February 2016

<p>Existen ejemplos notables a lo largo de la historia que muestran alternativas a la arquitectura convencional de soportes y elementos soportados, también a la disociación entre el habitar y la circulación tan característica de la arquitectura racionalista. Sus propiedades pueden ser aisladas y analizadas para definir las bases de un nuevo paradigma gracias a los avances en el hormigón armado y a su capacidad de materializarse como superficie continua en el espacio. Este artículo compara tres acercamientos –Kiesler, Parent, SANAA– que cuestionan las direcciones cartesianas orientadas por la gravedad en el espacio euclídeo.</p>
Erik Christian Sørensen y el museo de naves vikingas en Roskilde
Authors: Ferrer Forés Jaime J. 
Published: February 2016

<p>Este artículo recorre la trayectoria arquitectónica del arquitecto danés<br />Erik Christian Sørensen (1922-2011), caracterizada por la fidelidad a los elementos constructivos tradicionales y las innovaciones tecnológicas, y analiza el museo de naves vikingas de Roskilde (1963-1969). Apoyándose en los documentos originales del arquitecto, croquis, dibujos y conversaciones con el profesor danés, el artículo constituye un testimonio de una obra donde confluyen la visión tectónica de la arquitectura y la rotundidad plástica del hormigón</p>
Dental Caries and Oral Health-related Quality of Life in Cleft Lip and Palate Patients: A Pilot Study
Authors: Bastos Roosevelt S , Galitesi TRL , Foger D , Velasco SRM , Esper LA , Honório HM , Almeida ALPF , Soares S , Carrara C , Oliveira TM , Bastos JRM , Machado MAAM 
Published: February 2016

ABSTRACT

Background
Dental caries is a chronic disease caused by a set of biological and social factors. The aim of this study was to conduct a study of dental caries and oral health related quality of life (QoL) in Brazilian patients with cleft lip and palate.

Materials and methods
A cross-sectional study was conducted with cleft lip and palate patients with 12 years of age. Participants were examined for dental caries decayed, missing and filled teeth-World Health Organization (DMFT-WHO criteria). The dental impact on daily living (DIDL) instrument was used to collect data of oral health-related QoL. The Mann- Whitney test was used to present the differences between gender and the Spearman correlation was used with DIDL and DMFT.

Results
The 30 (30%) of the 50 children with cleft lip and palate were caries-free, and the DMFT was 1.70 (1.62), with 53.91% for the care index. The dimensions 'speak’ (34%) and ‘Hygiene’ (46%) represented the largest negative impact on QoL. The DIDL instrument correlated only among the missing component and dimensions 'stress’ (r = 0.35, p < 0.01) and 'study’ (r = 0.52, p < 0.01).

Conclusion
The presence of cleft lip and palate in subjects 12 years of age had a negative impact on QoL and this impact was also significant for tooth loss caused by dental caries.

How to cite this article
Galitesi TRL, Foger D, Velasco SRM, Esper LA, Honório HM, Almeida ALPF, Soares S, Carrara C Oliveira TM, Bastos JRM, Machado MAAM, Bastos RS. Dental Caries and Oral Health-related Quality of Life in Cleft Lip and Palate Patients: A Pilot Study. World J Dent 2015;6(3):123-128.
Cone-beam Computed Tomographic Analysis: Comparison of the Efficacy of Two Rotary Retreatment Systems for Removal of Filling Material from Primary Teeth Obturated with Contemporary Endodontic Sealers
Authors: Torres Carlos Rocha Gomes , da Silva Eduardo Galera , Gomes Ana Paula Martins , Moreira Camila Said , Martinho Frederico Canato , Coelho Marcella Pavanello Batista , Júnior Luis Roberto Manhães Coutinho 
Published: February 2016

ABSTRACTIntroductionThis study has used cone-beam computed tomography (CBCT) to evaluate the efficacy of two different nickel titanium (NiTi) rotary retreatment systems for removal of filling material from teeth obturated with contemporary endodontic sealers. The operative time required for removal of root filling materials was also evaluated.MethodsSixty root canals were randomly divided into three groups according to the sealer used for obturation: AH Plus Jet, mineral trioxide aggregate (MTA) Fillapex, and RoekoSeal Automix (RSA) (all, n = 20). After obturation, each group was subdivided into two subgroups according to the NiTi retreatment rotary system: Mtwo retreatment (Mtwo-R) file subgroup and ProTaper-UR subgroup—both instrumented with Mtwo-R files. Teeth were scanned with a microcomputed tomography before and after obturation.ResultsResidual filling material was observed in 100% of the specimens after retreatment. No difference was found between Mtwo-R and ProTaper-UR systems (p > 0.05). The RSA was more effectively removed from dentin walls than AH Plus Jet (p < 0.05), with no difference to MTA Fillapex (p > 0.05). Thus, teeth obturated with RSA required less operative time to be retreated (both, p<0.05).ConclusionProTaper-UR and Mtwo-R systems were effective in removing the filling materials after instrumentation, but they could not eliminate them completely. Moreover, teeth obturated with silicone-based sealer RSA showed less residual filling material in dentin walls compared to the epoxy resin-based sealer (AH Plus Jet), which exhibited no difference compared to the salicylate resin-based sealer (MTA Fillapex). Teeth obturated with silicon-based sealer also required less operative time to be retreated despite the NiTi rotary retreatment system tested.How to cite this articleMoreira CS, Martinho FC, Coelho MPB, Júnior LRMC, da Silva EG, Torres CRG, Gomes APM. Cone-beam Computed Tomographic Analysis: Comparison of the Efficacy of Two Rotary Retreatment Systems for Removal of Filling Material from Primary Teeth Obturated with Contemporary Endodontic Sealers. World J Dent 2015;6(3):129-137.
Gonial Angle as an Indicator for the Prediction of Growth Pattern
Authors: Rubika J , Felicita A Sumathi , Sivambiga V 
Published: February 2016

ABSTRACT

Aim
To determine the gonial angle, upper gonial angle and lower gonial angle in patients with horizontal, vertical and average growth pattern belonging to the local Chennai population and determine if it can be used as a growth indicator.

Materials and methods
Gonial angle, upper gonial angle and lower gonial angle measurements were made on lateral cephalograms of 90 patients—44 males and 46 females.

Results
A one sample t-test was used to determine the mean values for average, horizontal and vertical growth pattern and to check their level of significance. All the values were statistically significant with a p-value = 0.000.

Conclusion
The upper gonial angle was the same irrespective of growth pattern. The gonial angle and lower gonial angle can be used as an indicator for growth.

How to cite this article
Rubika J, Felicita AS, Sivambiga V. Gonial Angle as an Indicator for the Prediction of Growth Pattern. World J Dent 2015;6(3):161-163.
Effect of Application of Remineralizing Agents on the Microhardness of Microabraded Teeth
Authors: Srilatha S , Ladhani Zeeshan Hasanali , Dargad Sayli , Dixit Vighnesh 
Published: February 2016

ABSTRACTBackgroundTo evaluate microhardness of enamel surface after microabrasion of enamel using casein phosphopeptideamorphous calcium phosphate (CPP-ACP) and casein phosphopeptide-amorphous calcium phosphate with fluoride (CPP-ACPF).Materials and methodsTen freshly extracted anterior teeth were selected. Teeth were treated with abrasive slurry. This prepared slurry was applied to the labial aspects of teeth, using a rotating rubber cup, for 50 seconds. Each tooth was divided into four parts and treated accordingly with the topical application of the demineralizing agent stored in artificial saliva.The teeth were divided into four groups, as follows:– Group A: Control group– Group B: Microabrasion done but not treated– Group C: Microabrasion done and CPP-ACP paste applied– Group D: Microabrasion done and CPP-ACPF (i.e. with fluoride) applied.The microhardness was evaluated using the Vicker's microhardness test.ResultsMicrohardness values were highest for the control group followed by group D, group C and finally group B. Microabraded group of teeth with no topical application showed least microhardness values of all.ConclusionThe CPP-ACPF increased the microabrasion significantly as compared to CPP-ACP and microabrasion group.How to cite this articleLadhani ZH, Dargad S, Dixit V, Srilatha S, Hegde V. Effect of Application of Remineralizing Agents on the Microhardness of Microabraded Teeth. World J Dent 2015;6(3):174-177.