Objective:Analysis of shaping ability of four different rotary endodontic instruments using spiral computed tomography (CT).Materials and Methods:Eighty freshly extracted human mandibular first molars were used in the present study. Samples were randomly divided into four experimental groups with twenty samples in each group. Images of mesiobuccal canal of each sample were obtained pre- and post-operatively using spiral CT. All samples were prepared using their respective endodontic file systems (group I - ProTaper, group II - K3, group III - RaCe, and group IV - Mtwo). Image analyses were done using image analysis software for evaluation of canal transportation and centering ability. Data was then statistically analyzed using analysis of variance.Results:There was no statistically significance in transportation in their intergroup difference at any of the three locations (coronal, middle, and apical third). In centering ability there was no statistically significance in the coronal and middle third of the intergroup. However, there was a statistically significance of (P = 0.044) at the apical third between all the groups.Conclusion:Canals prepared with ProTaper had more canal transportation at all the three levels of root canal (coronal, middle, and apical third). Canals prepared with Mtwo were well centered at coronal and middle third whereas with RaCe canals were centered only at the apical third. All instruments showed some degree of canal aberrations in terms of shaping ability.

Coronal fractures of the anterior teeth are a common form of dental trauma and its sequelae may impair the establishment and accomplishment of an adequate treatment plan. Among the various treatment options, reattachment of a crown fragment is a conservative treatment that should be considered for crown fractures of anterior teeth. This clinical case reports the management of two coronal tooth fracture cases that were successfully treated using tooth fragment reattachment using glass-fibre-reinforced composite post.

Acromegaly is a rare metabolic condition in adults caused due to over secretion of growth hormone mostly due to pituitary gland adenomas.Disproportionate skeletal, tissue and organ growth are characteristic of acromegaly but the changes may be so insidious that most of the times go unnoticed by the patient and family. Craniofacial soft tissue and skeletal changes including mandibular prognathism and disturbed occlusion are typical manifestations of the disease process. Dental professionals may be the first healthcare providers to be visited by these patients and thereby prove instrumental in early diagnosis. Here we report the diagnosis of a case of acromegaly in a dental setup.

Prevalence of smoking Predictors of tobacco use a b s t r a c tObjectives: The present study was undertaken to determine the prevalence and demographic correlates of tobacco use in the adult population.Method: The sample selection was based on stratified random sampling technique selecting a total of 1635 persons from different parts of Gorakhpur district of Uttar Pradesh, India.The demographic details of participants along with prevalence of tobacco use were recorded.Results: The prevalence of tobacco use among the subpopulation studied was 31.1% for males and 6.1 for females. Both smoking and chewing tobacco were found to be associated with various demographic parameters. The rural population showed a higher prevalence of tobacco use among both males and females; the male smoking prevalence was higher in the urban population (23.0%) than its rural counterpart (18.1%). Also the prevalence of tobacco use was directly proportionate to age increasing upto the age of approximately 60 years, then declined. Stepwise Regression analysis showed gender as the strongest predictor for smoking followed by area of residence, education and age. Whereas education was the most significant predictors for chewing tobacco, followed by gender and age. Conclusion:The results of this study clearly indicate an association between tobacco prevalence and various demographic factors. To reduce the cancer burden, intervention measures to control tobacco use should specifically target those socio-demographic predictors of the subpopulation which are more susceptible to tobacco consumption.

The visible color alterations in esthetic materials can also be ascribed to the proprietary differences in chemistry that may affect the polymerization, water sorption, and consequently the color stability of the material. In addition, the obvious effect of colorants in beverages and foods leads to extrinsic discoloration of composites. Thus, for suitable performance, longevity and good clinical success of esthetic restorations, the material of choice should present adequate inherent characteristics. The discoloration of tooth-colored, resin-based materials may be caused by intrinsic or extrinsic factors. Visual or instrumental techniques can be used to evaluate discoloration. The use of instrumental methods like spectrophotometers and colorimeters to quantify tooth color could potentially eliminate the subjective aspects of color assessment. Hence based on above findings the present study was planned for evaluation of spectrophotometer analysis of bulk-fill composites on various daily used beverages. The present study was planned in Department of Conservative Dentistry and Endodontics, Buddha Institute of Dental Sciences and Hospital, Patna, Bihar. The color of composite resins can be determined by varying methods, including visual assessment and instrumental measurement by a spectrophotometer. According to the Spectrophotometer results of this study, material tested became changes in color after immersion in the beverages. The data generated from the present study concludes that all the beverages used in this study changes in color in the material tested. Coca-Cola causes more color changes than other beverages in the material tested. The total changes of color after 1, and 7 days of composite immersion in coca cola were higher than the clinically acceptable threshold, and they are comparable to the color changes observed with coffee, tea, orange juice and beer, which are known as strong staining agents. Keywords: Spectrophotometer Analysis, Bulk-Fill Composites, Beverages, esthetic materials, color change, etc.