Sharon Saldanha

Low-cost suturing training model for use in developing nations.

u b t i models. Improved dexterity from training on such a model should minimise the incidence of needlestick injuries and esidency in oral and maxillofacial surgery requires cometence in suturing. Texts that explain suturing techniques nd videos that illustrate them are available.1,2 However, anual dexterity is achieved by practice, for which comercial models are available for a resident to train on efore working on patients. It is also desirable to minmise the incidence of needle-stick injuries. In some units, cquiring commercially available models to train on may e hindered by cost. Foam also has a finite life, and ultiately needs replacement. Animal skin and waste meat rom butchers are a useful option, but their procurement and torage in tropical climates may be difficult. We have thereore developed a suturing model with affordability as the riority. Synthetic foam sponge was cut to size and covered with layer of elastomeric impression material. A glass slab was sed to impart a smooth surface and desired thinness to the kin analogue. The material sets within 5 min and easily eels off the glass slab. It can then be incised like tissue and utured. Light or medium elastomeric impression materials are uitable, as their low viscosity allows the material to ow into the foam, which creates a reliable mechanial bond after it sets. The rubbery nature and good tear trength of the elastomer mimic the elasticity and kerainised texture of skin, which offers suitable resistance to he passage of a surgical needle and suture material. The

Prosthetic rehabilitation of a patient after partial maxillectomy: A clinical report

Malignant melanoma of the oral cavity is very rare. This clinical report describes a method for prosthetic rehabilitation of a patient with malignant melanoma of the palate following partial maxillectomy with a closed hollow interim obturator.

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.