Comparison of retention and stability of two implant-retained overdentures based on implant location.

Statement Of Problem: The location of dental implants and the choice of retentive attachments for implant-retained overdentures are selected based on clinician preference, expert opinion, or empirical information. Limited information is available regarding implant position and the effect on the retention and stability of 2-implant mandibular implant overdentures.

Purpose: The purpose of this investigation was to evaluate the effect of implant location on the in vitro retention and stability of a simulated 2-implant-supported overdenture and to examine the differences among different attachment systems.

Comparison of retention and stability of implant-retained overdentures based upon implant number and distribution.

Purpose: The purpose of this investigation was to evaluate the effects of number and distribution of implants upon in vitro dislodging forces to a simulated implant-supported overdenture and to examine differences between several different attachment systems.

Materials And Methods: An experiment was undertaken utilizing a model simulating a mandibular edentulous ridge with dental implants in positions on the model approximating tooth positions in the natural dentition. A cobalt-chromium-cast testing framework was used to measure the peak load required to disconnect an attachment.

An accelerated clinical chairside technique for casting overdenture attachment copings.

An accelerated technique for casting a direct-pattern post and core restoration for use in fixed prosthodontics has been previously described. Similar techniques for use in removable prosthodontics show potential for clinical use, specifically for the fabrication of radicular stud overdenture attachments and their corresponding copings. The procedure uses a chairside technique and readily available components to fabricate a direct, acrylic resin pattern combining the elements of a cast coping with a fixed radicular attachment.

Conversion of a partial removable dental prosthesis from Kennedy class II to class III using a dental implant and semiprecision attachments.

This article presents a design to convert a partial removable dental prosthesis (PRDP) from Kennedy class II to class III using a dental implant. Incorporating semiprecision attachments, this design provides desired esthetics, phonetics, and function.

Effect of axial height and palatal wall on the resistance form of a maxillary anterior metal-ceramic crown preparation.

The effect of palatal wall modifications and height of a maxillary central incisor on the resistance form of metal-ceramic crowns are compared. Dies with adequate preparation height show no crown dislodgement in groups with a palatal wall, palatal wall/groove, and no palatal wall. This study suggests the use of a palatal groove improves the resistance to dislodgement in short maxillary anterior tooth preparations.