bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Intermixing Brands on the Dimensional Accuracy of Master Cast using Putty-wash Impression Technique
Authors: Sayed Mohammed E , Al-Makramani Bandar MA , Al-Sanabani Fuad A , Mohamed Mohamed S 
Published: November 2016

ABSTRACT

Aim
The aim of this study was to evaluate the effect of intermixing brands of addition silicone impression materials on the dimensional accuracy of stone models using two-step putty-wash technique.

Materials and methods
Two common brands of addition silicone impression material (Express and Aquasil) were used in this study. A total of 40 impressions of a stainless steel model simulating a three-unit bridge were made, 10 impressions for each group. Accuracy was assessed by measuring two dimensions (inter-abutment and intra-abutment) on stone models obtained from impressions of the stainless steel model. Each sample was measured thrice and the mean value was calculated. The data were analyzed using analysis of variance (ANOVA) and Scheffe's post hoc test.

Results
The results indicated that each of the inter-abutment and intra-abutment dimensions of the stone models was significantly higher than those for the stainless steel model (p < 0.001). However, there was no statistically significant difference in each of the inter-abutment and intra-abutment dimensions of the stone models among the four tested groups (p < 0.05).

Conclusion
The results obtained were statistically analyzed and the values of the inter-abutment and intra-abutment dimensions were all within the clinically acceptable range.

Clinical significance
Intermixing brands of additional silicone impression materials evaluated in this study did not affect the dimensional accuracy of obtained stone casts. This will help to minimize the wastage of materials due to lack of either light or putty consistency of the same brand of additional silicone impression material.

How to cite this article
Sayed ME, Al-Makramani BMA, Al-Sanabani FA, Mohamed MS. Effect of Intermixing Brands on the Dimensional Accuracy of Master Cast using Putty-wash Impression Technique. J Contemp Dent Pract 2016;17(9):734-739.
Assessing the Risk of Oral Cancer associated with Gutka and Other Smokeless Tobacco Products: A Case–control Study
Authors: Awan Kamran Habib , Hussain QA , Maralingannavar Mahesh 
Published: November 2016

ABSTRACT

Introduction
Tobacco and tobacco-related products have been attributed to be causative factors for oral cancer. Newer, chewable, and commercially available smokeless tobacco (ST) products, such as gutka pose further threat in this direction. The aim of the study was to evaluate the risk of oral cancer associated with gutka and other ST products.

Materials and methods
A case-control study of 134 cases and 134 controls, over a period of 6 months (July–December 2014), was carried out at the Baqai University, Karachi, Pakistan. An interview-based questionnaire was used to collect data on sociodemographic characteristics, oral hygiene practices and type, duration, and frequency of use of tobacco-related products. Data were analyzed using the Pearson's chi-square (χ2) test with the level of significance set as p < 0.05.

Results
Gutka showed the highest odds ratio toward developing oral cancer ratio among all the tobacco-related products [odds ratio (OR) 5.54; 95% CI 2.83–10.83; p < 0.001)]. Participants who consumed other ST products also showed 2 to 4 times higher odds ratio of developing oral cancer than compared to those who did not consume these products.

Conclusion
The study provided strong evidence that gutka and other ST products are independent risk factors for oral cancer.

Clinical significance
This study highlights the strong association of different types of ST and oral cancer. This results in identification of high-risk groups for targeted screening for potential oral cancer lesions.

How to cite this article
Awan KH, Hussain QA, Patil S, Maralingannavar M. Assessing the Risk of Oral Cancer associated with Gutka and Other Smokeless Tobacco Products: A Case-control Study. J Contemp Dent Pract 2016;17(9): 740-744.
Evaluation of the Position of Mental Foramen for Clinical and Forensic Significance in terms of Gender in Dentate Subjects by Digital Panoramic Radiographs
Authors: Mhapuskar Amit , Thakare Shweta , Hiremutt Darshan , Giroh Versha R , Kalyanpur Kedarnath , Alpana KR 
Published: November 2016

ABSTRACTIntroductionEvaluation of the position of mental foramen aids in forensic, surgical, endodontic, as well as diagnostic procedures. Thus, in view of this, the present study was conducted among the population of Pune, a central part of India, to determine the most regular location of the mental foramen and to estimate difference in position of mental foramen based on gender.Materials and methodsThe present retrospective study was commenced on 200 digital panoramic radiographs of dentate patients. The location of the representation of the mental foramen was traced. Measurements for evaluating distance of superior and inferior borders of the foramen in relation to the lower border of the mandible were made using the reference lines drawn from anatomical landmarks. The data so obtained were statistically analyzed using chi-square test.ResultsThe most common position of mental foramen among Pune population in horizontal plane in both male and female patients was in line with second premolar followed by position in between first and second premolar, whereas in the vertical plane, most common position was at or in line with apex of second premolar followed by in between apex of first and second premolar. The variation in length of superior and inferior border of the foramen in relation to lower border of the mandible with respect to gender was found to be significant, with p-value <0.05.ConclusionThere was no difference in position of mental foramen in horizontal and vertical planes based on gender.Clinical significanceThe stability of location of mental foramen and significant difference in length of superior and inferior border of the foramen in relation to lower border of the mandible with respect to gender offer its application in forensic identification of gender.How to cite this articleThakare S, Mhapuskar A, Hiremutt D, Giroh VR, Kalyanpur K, Alpana KR. Evaluation of the Position of Mental Foramen for Clinical and Forensic Significance in terms of Gender in Dentate Subjects by Digital Panoramic Radiographs. J Contemp Dent Pract 2016;17(9):762-768.
Detection of Occlusal Carious Lesion using the SoproLife® Camera: A Systematic Review
Authors: Doméjean Sophie , Rongier Julie , Muller-Bolla Michèle 
Published: November 2016

ABSTRACT

Aim
The aim of this systematic review was to assess the in vivo scientific evidence regarding the ability of a recently developed light fluorescence device, SoproLife® (Sopro-Acteon group, La Ciotat, France) in detecting occlusal carious lesions.
The PubMed database was searched for in vivo trials that evaluated the validity of the SoproLife® camera for the detection of occlusal carious lesions. Among the 11 articles originally identified with the keyword “Soprolife,” only three articles were included.
The three included surveys used the International Caries Detection and Assessment System (ICDAS)-II criteria as gold standard for the assessment of SoproLife® compared or not to other detection devices (DIAGNOdent® and Spectra Caries Detection Aid®). Two of the included studies reported only on permanent teeth or both primary and permanent teeth. The SoproLife® validity values varied markedly among studies with a sensitivity ranging between 0.43 and 0.95 and a specificity between 0.55 and 1. Interobserver reproducibility with the SoproLife® was reported in two of the three studies (0.98 and 0.72) and none of the studies reported about intraobserver reproducibility.
No clear-cut conclusion can be made based on the three included clinical studies; further in vivo investigations are needed to confirm the validity of the SoproLife® camera in terms of detection of occlusal carious lesions.

How to cite this article
Doméjean S, Rongier J, Muller-Bolla M. Detection of Occlusal Carious Lesion using the SoproLife® Camera: A Systematic Review. J Contemp Dent Pract 2016;17(9):774-779.
Periodontal and Microbiological Profile of Intensive Care Unit Inpatients
Authors: Tonetto Mateus R , Rocatto Grace , Matos Fernanda Z , Pedro FL Miranda , Lima Suellen L , Aranha AM Fabio 
Published: November 2016

ABSTRACT

Introduction
The bidirectional relationship between the periodontal diseases and systemic diseases was attributed to the focal infection concept. The aims of this study were to assess the periodontal and microbiological profile of intensive care unit (ICU) inpatients submitted to orotracheal intubation, and classify them regarding gender, age group, ethnic, hospitalization reason and period, nosocomial infection occurrence, and death.

Materials and methods
Inpatients were assessed, distributed into toothed and toothless groups. The periodontal clinical condition was assessed 24 hours after the ICU admission through plaque index, gum index, probing depth, and clinical level of insertion. All microbiological samples were collected on the 6th day of admission. These samples were collected from different intraoral sites, depending on the group: In the toothed group, samples were collected from gingival sulcus and in the toothless group, from buccal mucosa and tongue. Identification for Aggregatibacter actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg), and Tannerella forsythia (Tf) was accomplished and analyzed, using absolute quantification and specific primer pairs through an amplification system with probes.

Results
Forty subjects composed the sample: Gender characterized by 60% of male, 27.5% of all patients were older than 60, and 22.5% were hospitalized due to cerebrovascular accident. Regarding hospitalization period, 55% of patients were hospitalized for 6 days and 70% of them died during the period of hospitalization. Of inpatients, 40% presented periodontal disease and 100% presented dental biofilm on assessed sites. When assessing the microbiota, statistical significance was observed between Aa, Pg, and Tf, for both toothed and toothless group (p < 0.0001).

Conclusion
Large quantities of Aa were found in samples of toothless inpatients, a fact that suggests that the oral environment, even without teeth, presents favorable conditions for bacterial biofilm formation with a related pathogenic potential.

Clinical significance
The dental biofilm may comprise pulmonary pathogen colonies, promoting a perfect environment for their growth and development, facilitating the colonization of the lower airways, as well as colonization by bacteria originally from the oral cavity.

How to cite this article
Porto AN, Borges AH, Rocatto G, Matos FZ, Borba AM, Miranda Pedro FL, Lima SL, Tonetto MR, Bandéca MC, Aranha AMF. Periodontal and Microbiological Profile of Intensive Care Unit Inpatients. J Contemp Dent Pract 2016;17(10):807-814.
Reasons for not using Implants to retain Complete Denture: Patients’ Survey
Authors: Amri Mohammad D Al , Al-Johany Sulieman , AlOtaibi Hanan , Alzoman Hamad , Alkindi Mohammed , Alqahtani Fahad , Alwadei Farhan 
Published: November 2016

ABSTRACT

Objective
This study aimed to gain more information from complete denture (CD) wearers who did not receive dental implants, of the reasons preventing them from using implants to retain their CD in a selected sample of dental patients in Riyadh, Saudi Arabia.

Materials and methods
A paper-and-pencil questionnaire containing 20 direct questions of the possible reasons preventing CD wearers from receiving implants to retain their dentures was distributed in three different places in Riyadh, Saudi Arabia.

Results
A total of 270 subjects were included in this survey. The results showed that 180 (66.7%) patients indicated that the fear of pain associated with implant placement was the main reason preventing them from receiving an implant treatment, followed by fear of the surgical procedure (175, 64.8%), fear of postoperative complications (166, 61.5%), information from other people about the various problems associated with implant treatment (154, 57%), and finally cost of the implant (141, 52.2%).

Conclusion
Fear is the main reason preventing CD wearers from receiving implant treatment. Therefore, it is essential for dentists to be familiar with the reasons for implant refusal to overcome a common, yet an influential obstacle.

How to cite this article
Al-Johany S, AlOtaibi H, Al Amri MD, Alzoman H, Alkindi M, Alqahtani F, Alwadei F. Reasons for not using Implants to retain Complete Denture: Patients’ Survey. J Contemp Dent Pract 2016;17(10):826-829.
Status of Endodontic Treatment and the Correlations to the Quality of Root Canal Filling and Coronal Restoration
Authors: Semenoff-Segundo Alex , Kuga Milton C , Tonetto Mateus R , Pedro Fabio M , Marques ATC , Pereira Thiago M , Lima SNL , Borges Alvaro H 
Published: November 2016

ABSTRACTIntroductionThis cross-sectional study evaluated the prevalence and quality of root canal treatment in 1,977 digital radiological files.Materials and methodsData were statistically analyzed using descriptive analysis, and the chi-square test was performed with a 5% significance level.ResultsThe mean age of the study population was 34.9 years. The endodontic treatment frequency was 6.14%, significantly higher in premolars. Adequate endodontic treatment was observed in 39.7% of analyzed cases. Molars were significantly more frequent with regard to inadequate filling quality. In 47.6% of cases, the filling's apical limit was classified as adequate, and there was a higher incidence of molars that were inadequate. Restorations were classified as adequate in 79.0% of cases, and molars were responsible for the highest frequency of inadequate restorations. The frequency of teeth with endodontic treatment that showed no periapical changes was 47.7%. There was no significant difference in the presence of periapical change according to gender. An increased presence of periapical change was observed with increasing age. The periapical lesions were observed in 45% of cases and related to inadequate filling quality. The apical limit was considered inadequate and related to periapical changes in 42% of cases. Periapical changes were present in 52% of cases, regardless of the quality of the filling and apical limit. Such changes were present in 42% of cases with adequate coronal restoration.ConclusionIt can be concluded that apical periodontitis (AP) is associated with the quality of endodontic treatment. The coronal restoration affects significantly the success rate of endodontic treatment.Clinical significanceThe quality of the root filling and coronal restoration is closely related to periapical health.How to cite this articlePedro FM, Marques ATC, Pereira TM, Bandeca MC, Lima SNL, Kuga MC, Tonetto MR, Semenoff- Segundo A, Borges AH. Status of Endodontic Treatment and the Correlations to the Quality of Root Canal Filling and Coronal Restoration. J Contemp Dent Pract 2016;17(10):830-836.
The Role of Economic Policy Uncertainty in Predicting U.S. Recessions: A Mixed-frequency Markov-switching Vector Autoregressive Approach
Authors: Balcilar Mehmet , Gupta Rangan , Segnon Mawuli 
Published: November 2016

Abstract
This paper analyzes the performance of the monthly economic policy uncertainty (EPU) index in predicting recessionary regimes of the (quarterly) U.S. GDP. In this regard, the authors apply a mixed-frequency Markov-switching vector autoregressive (MF-MS-VAR) model, and compare its in-sample and out-of-sample forecasting performances to those of a Markov-switching vector autoregressive model (MS-VAR, where the EPU is averaged over the months to produce quarterly values) and a Markov-switching autoregressive (MS-AR) model. Their results show that the MF-MS-VAR fits the different recession regimes, and provides out-of-sample forecasts of recession probabilities which are more accurate than those derived from the MS-VAR and MS-AR models. The results highlight the importance of using high-frequency values of the EPU, and not averaging them to obtain quarterly values, when forecasting recessionary regimes for the U.S. economy.
Community Air Sensor Network (CAIRSENSE) project: evaluation of low-cost
sensor performance in a suburban environment in the southeastern United
States
Authors: Jiao Wan , Hagler Gayle , Williams Ronald , Sharpe Robert , Brown Ryan , Garver Daniel , Judge Robert , Caudill Motria , Rickard Joshua , Davis Michael , Weinstock Lewis , Zimmer-Dauphinee Susan , Buckley Ken 
Published: November 2016

Abstract. Advances in air pollution sensor technology have enabled the development of small and low-cost systems to measure outdoor air pollution. The deployment of a large number of sensors across a small geographic area would have potential benefits to supplement traditional monitoring networks with additional geographic and temporal measurement resolution, if the data quality were sufficient. To understand the capability of emerging air sensor technology, the Community Air Sensor Network (CAIRSENSE) project deployed low-cost, continuous, and commercially available air pollution sensors at a regulatory air monitoring site and as a local sensor network over a surrounding  ∼ 2 km area in the southeastern United States. Collocation of sensors measuring oxides of nitrogen, ozone, carbon monoxide, sulfur dioxide, and particles revealed highly variable performance, both in terms of comparison to a reference monitor as well as the degree to which multiple identical sensors produced the same signal. Multiple ozone, nitrogen dioxide, and carbon monoxide sensors revealed low to very high correlation with a reference monitor, with Pearson sample correlation coefficient (r) ranging from 0.39 to 0.97, −0.25 to 0.76, and −0.40 to 0.82, respectively. The only sulfur dioxide sensor tested revealed no correlation (r < 0.5) with a reference monitor and erroneously high concentration values. A wide variety of particulate matter (PM) sensors were tested with variable results – some sensors had very high agreement (e.g., r =  0.99) between identical sensors but moderate agreement with a reference PM2.5 monitor (e.g., r =  0.65). For select sensors that had moderate to strong correlation with reference monitors (r > 0.5), step-wise multiple linear regression was performed to determine if ambient temperature, relative humidity (RH), or age of the sensor in number of sampling days could be used in a correction algorithm to improve the agreement. Maximum improvement in agreement with a reference, incorporating all factors, was observed for an NO2 sensor (multiple correlation coefficient R2adj-orig = 0.57, R2adj-final = 0.81); however, other sensors showed no apparent improvement in agreement. A four-node sensor network was successfully able to capture ozone (two nodes) and PM (four nodes) data for an 8-month period of time and show expected diurnal concentration patterns, as well as potential ozone titration due to nearby traffic emissions. Overall, this study demonstrates the performance of emerging air quality sensor technologies in a real-world setting; the variable agreement between sensors and reference monitors indicates that in situ testing of sensors against benchmark monitors should be a critical aspect of all field studies.
Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration
Authors: Varma Vidya , Prange Matthias , Schulz Michael 
Published: November 2016

Abstract. Numerical simulations provide a considerable aid in studying past climates. Out of the various approaches taken in designing numerical climate experiments, transient simulations have been found to be the most optimal when it comes to comparison with proxy data. However, multi-millennial or longer simulations using fully coupled general circulation models are computationally very expensive such that acceleration techniques are frequently applied. In this study, we compare the results from transient simulations of the present and the last interglacial with and without acceleration of the orbital forcing, using the comprehensive coupled climate model CCSM3 (Community Climate System Model version 3). Our study shows that in low-latitude regions, the simulation of long-term variations in interglacial surface climate is not significantly affected by the use of the acceleration technique (with an acceleration factor of 10) and hence, large-scale model–data comparison of surface variables is not hampered. However, in high-latitude regions where the surface climate has a direct connection to the deep ocean, e.g. in the Southern Ocean or the Nordic Seas, acceleration-induced biases in sea-surface temperature evolution may occur with potential influence on the dynamics of the overlying atmosphere.
Compound extremes in a changing climate – a Markov chain approach
Authors: Sedlmeier Katrin , Mieruch Sebastian , Schädler Gerd , Kottmeier Christoph 
Published: November 2016

Abstract. Studies using climate models and observed trends indicate that extreme weather has changed and may continue to change in the future. The potential impact of extreme events such as heat waves or droughts depends not only on their number of occurrences but also on "how these extremes occur", i.e., the interplay and succession of the events. These quantities are quite unexplored, for past changes as well as for future changes and call for sophisticated methods of analysis. To address this issue, we use Markov chains for the analysis of the dynamics and succession of multivariate or compound extreme events. We apply the method to observational data (1951–2010) and an ensemble of regional climate simulations for central Europe (1971–2000, 2021–2050) for two types of compound extremes, heavy precipitation and cold in winter and hot and dry days in summer. We identify three regions in Europe, which turned out to be likely susceptible to a future change in the succession of heavy precipitation and cold in winter, including a region in southwestern France, northern Germany and in Russia around Moscow. A change in the succession of hot and dry days in summer can be expected for regions in Spain and Bulgaria. The susceptibility to a dynamic change of hot and dry extremes in the Russian region will probably decrease.
Aplikace metody ukotvujících vinět v pedagogickém výzkumu: přehled literatury a metodologická doporučení
Authors: Voňková Hana , Papajoanu Ondřej , Bendl Stanislav 
Published: November 2016

Dotazníková šetření se (sebe)hodnoticími položkami jsou v pedagogickém výzkumu využívána často. Respondenti však mohou na tyto položky odpovídat rozdílně, tj. volit jiné škálové kategorie, přestože jejich objektivní situace je stejná. Metoda ukotvujících vinět nabízí řešení tohoto problému. Odpovědi na tyto položky koriguje o rozdílné užívání škály a činí je tak porovnatelné. Tento příspěvek si klade dva cíle. Zaprvé poskytnout přehled do této chvíle publikovaných prací z oblastí pedagogického výzkumu, ve kterých byla tato metoda aplikována. Zadruhé shrnout metodologická doporučení týkající se správné formulace a užití ukotvujících vinět. Metoda byla zatím úspěšně aplikována při měření nečestného chování žáků, ICT znalostí a dovedností, spokojenosti rodičů se školou, řízení třídy učitelem a podpory žáků ze strany učitele. Ukazuje se, že respondenti s různými charakteristikami skutečně užívají škálu rozdílným způsobem a že korigování dat s využitím metody ukotvujících vinět může pomoci vysvětlit některá paradoxní zjištění o vztahu vybraných proměnných. Naše metodologická doporučení pro využívání vinět se týkají podpory základních předpokladů metody, diskriminační síly vinět, počtu vinět, obsahové relevance a jazykové složky vinět. Na základě shrnutí dosavadního rozšíření a přínosu této metody pedagogickému výzkumu diskutují autoři možnosti jejího dalšího využití pro měření pedagogických konceptů.