The objective of this study is to evaluate techniques of impression for crowns and bridges sent to commercial laboratories from private practitioners. A number of 156 impressions for dental crown and bridges were examined. The most widely used impression technique is segmental dual arch with two different consistency condensation cured silicone impression material.

background and aim: an important criterion for success assessment of implant-supported prostheses is marginal fit. vertical and horizontal discrepancy can result in loosening of the prosthetic screw, crestal bone resorption, peri-implantitis and loss of osseointegration. despite careful attention to waxing, investing, and casting, marginal discrepancies are inevitable. the aim of this study was...

Despite prior recommendations for removal, latex gloves remain prevalent in dental clinical practice because of puncture resistance, durability, and user satisfaction.[1] However, latex gloves can impair polymerization of vinyl polysiloxane impression material (VPS) thus, resulting in inaccurate and distorted impressions, which may require the clinician to repeat the impression procedure leadin...

STATEMENT OF PROBLEM Success rates for making fixed prosthodontic impressions based on material and tray selection are not known. PURPOSE The purpose of this clinical study was to compare first impression success rates for 2 types of impression material and 2 impression tray systems. MATERIAL AND METHODS Dual-viscosity impressions were made with a vinyl polysiloxane (VPS) (Aquasil Ultra Mon...

PURPOSE Maxillofacial prostheses are usually fabricated on the basis of impressions made with dental-impression material. The extent to which the prosthesis reproduces normal facial morphology depends on the clinical judgment of the individual fabricating the prosthesis. This paper describes a computer-aided design and manufacturing (CAD/CAM) system for the fabrication of maxillofacial prosthes...

BACKGROUND This study was carried out to evaluate the effect of two commercially available chemical disinfectants namely sodium hypochlorite and glutaraldehyde and a surface wetting agent on the wettability of three high precision elastomeric impression materials, addition silicone, condensation silicone and polyether. MATERIALS AND METHODS Three different types of elastomeric impression mate...

STATEMENT OF THE PROBLEM The literature is limited on the detailed description of the practice of Irish general dentists in the provision of crowns. PURPOSE OF THE STUDY To review the provision of crowns by dentists in Ireland and identify opportunities for improving current clinical practices. MATERIALS AND METHODS A questionnaire was posted to 500 general dentists selected randomly from t...

The fabrication of nanostructured materials is an area of continuous improvement and innovative techniques that fulfill the demand of many fields of research and development. The continuously decreasing size of the smallest patternable feature has expanded the catalog of methods enabling the fabrication of nanostructured materials. Several of these nanofabrication techniques have sprouted from ...