Implant Location Influence on Stress Distribution in Implant Assisted RPDs
Objectives: DERPD is a situation with lack of distal dental support and 13 times difference in resiliency between the mucosa and the periodontal ligament, resulting in levers during compression forces that are potentially destructive to the abutments and the surrounding tissues. The aim of this study was to assess the effect of implant location on stress distribution, in distal extension implant assisted Removable Partial Dentures.
Methods: A three-dimensional model of a bilateral distal extension partially edentulous mandible containing anterior teeth and first premolar in both sides of the arch, a partial removable denture and an implant (4×10 mm) were designed. With the aid of the finite element program ANSYS 8.0, the models were loaded and von Mises stresses were evaluated.
Results: When implant was placed in second premolar region, presented with highest stress on implant, abutment tooth and cancelous bone were shown. The lowest stress was shown on implant and bone in 1st molar area.
Conclusions: Locating the implant in first molar area positively influenced the distribution of stresses on the analyzed models.
Habib Abadi, Shirin
( Post graduate student,Prosthodontics department,Dental School,Shahid Beheshti University of Medical Sciences,Tehran,Iran, Tehran, , Iran
)
Mansouri, Yasaman
( Shahid Beheshti University of Medical Sciences, Tehran, N/A, Iran
)
SESSION INFORMATION
Oral Session
Restorative, Prosthodontics Research
12/12/2013