Implant-supported dental prostheses can be retained by a screw or cement. Implant-supported fixed partial dentures have a passive fit. A passive fit means there is an internal gap between the abutment surface and the intaglio of the retainer to insure that there is no lateral pressure on the supporting implants or friction upon seating of the prosthesis. This gap is filled with cement for reten...

JCO/FEBRUARY 2010 © 2010 JCO, Inc. T venerable Hawley retainer has been basically unaltered in form and application since its introduction to the specialty nearly 100 years ago.1 To add to its utility, we suggest a modification of the retentive clasping mechanism. Although we prefer to use ball clasps rather than Adams clasps because of their sturdiness and simplicity, they are shorter and thus...

Introduction: Inlay retained bridges represent a conservative approach to restore single missing posterior tooth. Objective: To evaluate the clinical performance and survival rate of inlay retained fixed partial dentures. Materials and methods: A total of 12 patients were included in this clinical study. The patient selection, preparation technique as well as restoration fabrication followed cu...

BACKGROUND Most orthodontists believe that fixed retainers are necessary to maintain ideal dental relationships. However, untoward side effects might result from their long-term placement. The aim of this study was to evaluate the clinical and radiographic effect of two commonly used fixed retainers on the health of the periodontium. METHODS Thirty patients were randomly divided into two grou...

Interactive systems must respond to user input within seconds. Therefore, to create realtime crowd-powered interfaces, we need to dramatically lower crowd latency. In this paper, we introduce the use of synchronous crowds for ondemand, realtime crowdsourcing. With synchronous crowds, systems can dynamically adapt tasks by leveraging the fact that workers are present at the same time. We develop...

INTRODUCTION Skeletal, dental and profile discrepancies can be amended by using functional orthodontic appliances. OBJECTIVE This study is a report of the treatment of a patient, 11 years and 4 months old, with Class II, division 1, malocclusion, convex profile, protrusion of upper incisors, pronounced overjet and overbite, and mild crowding. METHODS The patient was treated with a Jasper Ju...

Aim. Recent studies have indicated that non-oral microorganisms are able to colonise intraoral devices such as orthodontic retainers. The aim of this study was to evaluate the effectiveness of chemical and mechanical elimination of Staphylococcus aureus biofilms (MRSA) from thermoplastic discs which were used to represent orthodontic retainers. Methods and Results. Methicillin-resistant Staphyl...

Background: Cases of relapse after orthodontic treatment are often reported with a prevalence that tends to be high. The retention method using fixed retainer is commonly used obtain long-term stability results. Objective: To determine the effectiveness retainers post treatment. Methods: This research was conducted scoping review based on PRISMA (Preferred Reporting Items for Systematic Reviews...