Thilak Shetty

Resilient liners: a review.

Resilient liners when used intelligently are an excellent adjunct in removable prosthodontics. However, currently they have to be best considered as temporary expedients because none of the advocated permanent liners have life expectancy comparable to resin denture base. This article reviews the literature regarding their composition, functions, gelation characteristics, bond strength and influence on denture bases. It also presents their drawbacks and attempts made to extend their longevity. A Medline search was completed for the period from 1986 to 2007, along with a manual search, to identify pertinent English peer-reviewed articles and textbooks.

A Comparative Evaluation of Stress Distribution with Two Attachment Systems of Varying Heights in a Mandibular Implant-Supported Overdenture: A Three-Dimensional Finite Element Analysis: Stress Distribution in a Mandibular IOD

PURPOSE To analyze and compare the stress distribution in an implant-retained overdenture complex using ball and Locator attachments of three heights by means of a 3D finite element analysis (FEA). MATERIALS AND METHODS Six finite element models comprising an edentulous mandible with two interforaminal bone-level implants and ball attachments of heights 1 mm (A1), 3 mm (A3), and 5 mm (A5), and Locator attachments of heights 1 mm (B1), 3 mm (B3), and 5 mm (B5), were designed using ANSYS Workbench Software. Unilateral vertical (100 N) and oblique loads (100 N at 30° to the longitudinal axis of the implant in buccolingual direction) were applied. Average von Mises stress values were evaluated quantitatively and qualitatively. RESULTS Locator attachments showed lower stress values as compared to the ball attachments in all examined areas. The increase in the height of both resulted in increased stress values. Higher values were observed at the implant neck in all models, as compared to the body and the apex. The recorded stress was higher in the cortical bone as compared to the cancellous bone. CONCLUSIONS Within the limitations of the study, Locator attachments demonstrated lesser and more homogenous stress distribution in the implant-overdenture complex in comparison to ball attachments. The stresses generated within the tissues increase with an increase in collar height of the attachment system and therefore, attachments should be as short as possible for more favorable stress transmission.

Evaluation of the Effect of Different Finish Lines and Luting Agents on Marginal Fit and Microleakage in Direct Metal Laser Sintered Copings-An in Vitro Study

Background & Objectives:. The present study aimed to study the effect of finish line and luting cements on marginal gap and micro leakage in copings fabricated by Direct Metal Laser Sintering (DMLS) Methods: 28 maxillary premolars were divided

Effect of exposure time of eugenol containing temporary cement on tensile bond strength of permanent restorations luted with Self-Adhesive dual cure resin cement-An in vitro study

Purpose: This study was conducted to evaluate the tensile bond strength and fracture mode of permanent restorations luted with self-adhesive resin luting agent following provisional cementation with eugenol containing luting agents

Comparison of quality of impression and clinical performance after gingival displacement with magic foam cord and gingival retraction cord-An in vivo study

Purpose: The purpose of this in vivo study was to investigate the effectiveness of two different gingival displacement techniques. Method: Thirty nine prepared abutment teeth (n=39) of 19 patients were evaluated in this prospective clinical study.

Comparative evaluation of aluminum foil and air/water spray as temperature control method using direct provisionalization

Purpose: Temperature control is essential during the direct fabrication of provisional crowns in Fixed partial denture.

An in vitro study to evaluate the accuracy of dies obtained from dual-arch impression trays using addition silicone impression material and tray combinations

Objectives: This study aims to evaluate and compare the accuracy of dies obtained from dual-arch impression trays using vinyl polysiloxane impression material and tray combinations. Materials and Methods: Typodont teeth were embedded in the maxillary and mandibular Dentoform model bases and mounted in an articulator using maximum intercuspation. Impressions were made with vinyl polysiloxane materials (Reprosil Putty, Aquasil Ultra Heavy, Aquasil Ultra LV [Dentsply International]) using one-step simultaneous dual viscosity technique in dual-arch plastic trays and metal trays as well as in full arch acrylic resin custom trays. These were compared for the dimensional accuracy with the dies prepared from typodont tooth as a control. Results obtained were statistically analyzed. Results: The results indicated that dies obtained from all the impression combinations showed increased dimension (acrylic resin custom trays 9.4 ± 0.048 mm, dual-arch plastic trays 9.5 ± 0.035 mm, and dual-arch metal trays 9.41 ± 0.017 mm) as compared to the dimension of control (9.39 ± 0.007 mm). Conclusion: All the tray impression material combinations showed variable accuracies. Full arch acrylic resin trays exhibited the greatest accuracy whereas dual-arch plastic trays showed the least accuracy. CLINICAL RELEVANCE TO INTERDISCIPLINARY DENTISTRY In fixed prosthodontics, a lower incidence of errors can be obtained using a combination of PVS impression material with metal or custom tray, thereby improving the accuracy of the subsequent restoration. Interdisciplinary dentistry necessitates good prosthodontics and as such prosthodontics is an integral part of good interdisciplinary dentistry.