Effects of clip materials on stress distribution to maxillary implant overdentures with bar attachments

Abstract Statement of problem Fracture of maxillary implant overdentures (IODs) is a frequent complication. However, no studies have examined the effects of clip materials on the stress applied to maxillary IODs. Purpose The purpose of this study was to investigate the effects of clip materials for...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of prosthetic dentistry 2016-03, Vol.115 (3), p.283-289
Main Authors: Tanoue, Mariko, DDS, Kanazawa, Manabu, DDS, PhD, Takeshita, Shin, DDS, PhD, Minakuchi, Shunsuke, DDS, PhD
Format: Article
Language:English
Subjects:
Dental Implants
Dental Prosthesis, Implant-Supported
Dental Stress Analysis
Dentistry
Denture Design
Denture Retention - instrumentation
Denture, Overlay
Materials Testing
Surgical Instruments
Tensile Strength
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract Statement of problem Fracture of maxillary implant overdentures (IODs) is a frequent complication. However, no studies have examined the effects of clip materials on the stress applied to maxillary IODs. Purpose The purpose of this study was to investigate the effects of clip materials for bar attachments on the stress applied to maxillary IODs without palatal coverage. Material and methods This study included finite element analysis and a model study. An edentulous maxillary model with 4 implants and an experimental overdenture with bar attachments was fabricated. Strain gauges were attached on the denture surface adjacent to the end of each clip. Four clip conditions (n=5) were prepared: 3 plastic clips, 1 plastic clip, 3 metal clips, and 1 metal clip. A vertical load of 50 N was applied on the IOD. The maximum principle strain (MPS) was statistically analyzed by 2-way ANOVA and the post hoc Tukey HSD tests with clip materials and clip numbers as factors (α=.05). Results The greatest stress was observed on the resin surface around the end of the clip on the loaded side. The MPSs between both clip materials ( P =.048) and numbers ( P
ISSN:0022-3913
1097-6841
DOI:10.1016/j.prosdent.2015.07.017