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7%, P = 0.001), and frequent consumption of orange (68.9%, P = 0.000) were identified as factors associated with erosion. The prevalence of dental erosion in the community was high. Results of the study established that better awareness of the condition, better facilities for its early diagnosis in the community, and development of proper preventive strategies are required to reduce the severity of dental erosion. Copyright © 2019 Journal of International Society of Preventive and Community Dentistry.Objectives Restorative materials are used in the treatment of cervical lesions and restoration of the dental tooth. The objective of this study was to assess the suitability of the three commonly used restorative materials by dentists and the evaluation of stress distribution and deformation using Von Mises stress in cervical lesions of mandibular premolars under varying loading condition. Materials and Methods A computerized model of restored class V cavity of mandibular premolar tooth was created using three dimensional modeling software SpaceClaim. It was subjected to occlusal pressure load of 100, 150, 200 and 250MPa at right angle to buccal cusp and was analyzed for stress distribution and deformation in different restorative materials using Finite Element analysis, ANSYS Workbench. Results The analysis carried on the class V restored tooth from biomechanical point of view indicates that restorative material glass-ionomer cement exhibited better bonding with the tooth structure using ionic bonds with the calcium ion present in the tooth structure. The variation of 8%-9% of stress concentration is observed in cavity region across varied pressure loads with glass-ionomer cement to Cention N. Conclusion Glass-ionomer cement had showed better results than amalgam in terms of biomechanical property which is in agreement with the clinical findings. The stress values of Cention N were comparable to that of glass-ionomer cement. Copyright © 2019 Journal of International Society of Preventive and Community Dentistry.Objectives The objectives of this study were to determine the condylar guidance by the conventional method using interocclusal records and by panoramic radiographs in healthy dentate patients and to compare the values obtained from panoramic radiographs with the values obtained by a conventional method. Materials and Methods Thirty healthy dentulous subjects of either sex with an age range of 20-40 years visiting Jazan University, College of Dentistry, Dental Clinics for replacement of missing teeth or crowns, were selected according to the inclusion criteria. Maxillary and mandibular casts were obtained and mounted on Whipmix 2240 articulator. Right and left lateral interocclusal records were then made in patients by base plate wax (Dentsply truwax baseplate). This record was transferred to articulator, and condylar values were determined. In all the cases, articulator was programmed. Left and right condylar values were also measured on digital radiographs and readings were recorded. Condylar guidance readings obtained from interocclusal records and those obtained from panoramic radiographic images were compared and analyzed statistically using the t-test. Results The condylar guidance values obtained from the interocclusal record method for both left and right sides were less when compared to the values obtained from tracing the panoramic radiographs (radiographic method). The difference in values of both the methods was highly significant. Conclusion Although a significant amount of correlation was found between the two methods, better radiographic techniques should be further investigated. Copyright © 2019 Journal of International Society of Preventive and Community Dentistry.Background Radiographs have been used for forensic identification purpose. At times when only skull remains are found and other means of identification fail, radiographs of skull may be used for identification purpose. Aim The objective of this study was morphometric evaluation of the frontal sinus by using digital posteroanterior skull radiograph in relation to age and gender and to establish its forensic importance. Materials and Methods The study was conducted at Alfarabi Private College for Dentistry and Nursing, Jeddah, Kingdom of Saudi Arabia. It included 400 subjects (200 males and 200 females), aged 14-70 years. Radiographs of the individuals were taken by digital radiography, and morphometric evaluation of frontal sinus was carried out by using Adobe Photoshop CS3 Extended. Results Unilateral absence of sinus was noted in 2.5% males and 1.5% females. Bilateral absence was noticed in 2% males and 0.5% females. Right and left frontal sinus symmetry was seen in 83.20% of the individuals. The left-dominated asymmetry was observed in 6.98% individuals. The right-dominated asymmetry was observed in 9.82% individuals. Simple logistic regression analysis of gender by different variables showed right width and left width, which are most suited regressors for sex determination. The rate of accuracy in classification of males and females varied from 67.70% to 95.90%. Stepwise multiple regression analysis of estimation of age by different variables showed right sinus height is the best predictor of age. Conclusion In this study, the radiographic images of the frontal sinus showed significant morphological difference in relation to age and gender in Saudi population. https://www.selleckchem.com/products/c25-140.html On the basis of this evidence, it is proposed that the morphologic evaluation of frontal sinus can be used for personal identification. Copyright © 2019 Journal of International Society of Preventive and Community Dentistry.Background and Aims This study aimed to investigate the remineralization potential of two concentrations of theobromine (100 mg/L and 200 mmg/L) with fluoridated dentifrice, NovaMin, and nanohydroxyapatite using DIAGNOdent, scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis. Materials and Methods Two sections were taken from 50 teeth each. Artificial carious lesions were induced using demineralizing solution. Evaluation using DIAGNOdent, SEM, and EDX analysis for elemental evaluation of Ca/P ratio and fluoride ion was carried out. Teeth sections were then randomly assigned to five different groups (1) fluoridated dentifrice (Colgate™, Colgate -Palmolive, India), Novamine- Shy NM™, Group pharamaceuticals, India), 3. Nano-hydroxyapatite- Remin Pro™, Voco, Germany) 4. 100mg and 5. 200mg of Theobromine toothpaste (Theodent classic™, Rennou, UK-853069003006). Remineralization was carried out for 14 days with two applications per day. Samples were reanalyzed using DIAGNOdent, SEM, and EDX.