UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

The influence of mandibular deformation, implant numbers, and loading position on detected forces in abutments supporting fixed implant superstructures.

Hobkirk, JA; Havthoulas, TK; (1998) The influence of mandibular deformation, implant numbers, and loading position on detected forces in abutments supporting fixed implant superstructures. J Prosthet Dent , 80 (2) pp. 169-174.

Full text not available from this repository.

Abstract

STATEMENT OF PROBLEM: Forces may arise in association with the use of implant stabilized mandibular fixed partial dentures as a result of functional jaw deformation, yet the phenomenon has received little attention and is rarely included as a variable when investigating implant biomechanics. PURPOSE: This in vitro investigation tested the hypothesis that functional mandibular deformation influences force distribution in the jaw/implant/superstructure complex. MATERIAL AND METHODS: Six Brånemark implants were mounted in an acrylic resin replica of an edentulous human mandible. Applied forces were measured with 4-element resistance strain gauges mounted on each of 6 standard titanium abutments. The mandible was supported either on its lower border or suspended in a frame that simulated the natural situation. A cast gold superstructure was a mounted on varying combinations of implants, loaded occlusally in different locations, and the resultant forces at each supporting transmucosal abutment measured. RESULTS: The suspended ("natural") support configuration was associated with considerable differences in patterns of force transmission as compared with bench support. Loads were more widely spread, and large extrusion forces were detected, particularly where several implants were connected. CONCLUSIONS: Functional mandibular deformation is a significant factor in the design of mandibular implant stabilized prostheses, and calls into doubt the value of modeling techniques that do not allow for this phenomenon.

Type: Article
Title: The influence of mandibular deformation, implant numbers, and loading position on detected forces in abutments supporting fixed implant superstructures.
Location: UNITED STATES
Keywords: Acrylic Resins, Biomechanical Phenomena, Dental Abutments, Dental Implantation, Endosseous, Dental Implants, Dental Occlusion, Dental Prosthesis, Implant-Supported, Dental Stress Analysis, Denture Design, Denture, Partial, Fixed, Gold Alloys, Humans, Jaw, Edentulous, Mandible, Models, Anatomic, Stress, Mechanical
UCL classification: UCL > School of Life and Medical Sciences
UCL > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute
URI: http://discovery.ucl.ac.uk/id/eprint/103651
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item