Evaluation of photoelastic stress patterns produced by various designs of bilateral distal-extension removable partial dentures. |
| |
Authors: | W D Thompson F J Kratochvil A A Caputo |
| |
Institution: | 1. Veterans Administration Hospital, Long Beach, Calif. ,USA;2. University of California, School of Dentistry, Los Angeles, Calif. USA |
| |
Abstract: | The results of this study showed that: 1. The design of a retainer with a mesial rest in conjunction with a buccal I-bar or a wrought-wire and cast lingual arm exhibited the most favorable distribution of vertically applied forces. 2. Retainer designs with a distal rest tend to move the clinical crown distally and the root mesially at the apex, resulting in horizontal forces in the bone. 3. Placing rests of distal-extension removable partial dentures more anteriorly provides an axis of rotation that directs applied forces in a more vertical direction. 4. The distal rest in conjunction with circumferential retainers developed greater horizontal forces within the supporting structures. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|