Adhesive dentistry is based on the development of materials which establish an effective bond with the tooth tissues. In this context, adhesive systems have attracted considerable research interest in recent years. Successful adhesive bonding depends on the chemistry of the adhesive, on appropriate clinical handling of the material as well as on the knowledge of the morphological changes caused on dental tissue by different bonding procedures.

Introduction: This study is aimed at investigating the prevalence of type of malocclusion among patients referred to Department of orthodontics, Rama dental college, hospital and research centre, Kanpur Uttar Pradesh India during January 2018 to March 2019. Materials and methods: A cross-sectional survey was conducted among 528 patients and all these data were collected from patients admitted during the period of march 2018 to 2019. Classification of dental occlusion in patients was based on Angle’s definition; skeletal malocclusion classification was based on Steiner’s analysis, and Wits appraisal and Beta angle values.
Result: Among528 patients, 306 are female and 222 were male, class I malocclusion was 31.25 %, class II was 57.3% and class III 11.5%. The highest percentage was of Class II with a 57.3 % rate and the lowest recorded malocclusion was Class III. Malocclusion Class II was recorded twice in females compared to males. On the basis three parameters, the prevalence of Beta angle was the highest with 66.1% in Class III Malocclusion.
Conclusion: According to this study the most common skeletal malocclusion was class II malocclusion among male and female both and the least was class III and mostly females were affected with malocclusion. Amongst the three parameters, the prevalence of Beta Angle in Class I Malocclusion Female was the highest, followed by Wits appraisal and ANB angle and in Class II Malocclusion; the prevalence of Wits in female was the highest. In Class III Malocclusion, the prevalence of Beta angle was the highest.

For esthetically and functionally sound restoration of endodontic ally treated tooth usually post and coreis considered as best treatment option. The dentist usually faces problem in restoration of tooth which has undergone trauma, fractures, endodontic-access preparation, canal instrumentation and other idiopathic causes. In such instances, it is necessary to evaluate, diagnose and resolve esthetic problems using a combination of endodontic, periodontal and prosthetic treatments. Cast metal post-core systems have an extended history of successful use due to their superior physical properties. This case report presents a way to re-restore fractured porcelain fused to metal crown with all-ceramic crown over a cast post and core. The function of a post is to mainly assist and prevent the abutment, on which a crown is cemented, from fracturing such that the abutment separates from the root, at a fracture plane that's located approximately and theoretically at the extent of the crown (or ferrule) margin. A post essentially improves the ferrule effect that's provided by the fixed denture prosthesis.

Introduction: A study was conducted to measure and compare the marginal accuracy of provisional crowns (partial and full coverage crown) fabricated by direct technique. Materials and Methods: A direct technique was used in which temporary crowns were made on prepared typodont teeth by using an impression as a matrix. Fifteen complete crown for molar and fifteen partial crown for canine were made. The marginal discrepancy was determined by stereomicroscope which measures the space between the margin of the crown and the finish line of the preparation .The crowns which showed least marginal discrepancy were decided to have good marginal fit.
Results: Student's t tests were applied and mean value was calculated. A t- value of 8.126 was obtained for both the means. Statistically significant difference was found between the means of both the crowns (p<0.001). Thus, it was found that marginal fit discrepancy was less in complete provisional crowns (95.664) than the partial coverage provisional crowns (124.577).
Conclusion: Marginal fit of complete provisional crowns is better than partial provisional crowns. Key Words: Marginal accuracy, Provisional crowns, scanning electron microscopy.

Foreign body ingestion is a common occurrence and the majority of foreign bodies that reach the Gastrointestinal tract pass spontaneously, some patients require non-operative intervention or even surgery. The one-tooth or two - tooth removable partial denture provides no cross-arch stabilization and there is the chance that it may be swallowed if it becomes dislodged. Patients should be educated on the importance of adherence to instructions of mechanics of use, life span, maintenance of dentures, and maintenance recall visits to assess the retention of dentures. It is also important the incorporation of radiopaque material in dental appliances, because the location of a swallowed or aspirated dental prosthesis often is accomplished radio graphically. This case report based on faulty prosthesis swallowed by patient which leads to non-surgical intervention under General Anesthesia.