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- Title
Finite Element Analysis of an Implant-Supported FDP with Different Connector Heights.
- Authors
Alberto, Laura H. J.; Kalluri, Lohitha; Esquivel-Upshaw, Josephine F.; Duan, Yuanyuan
- Abstract
All-ceramic fixed dental prostheses (FDPs) tend to fracture in the connector areas, due to the concentration of tensile stresses. This study aimed to evaluate the role of connector height on the stress distribution of a posterior three-unit implant-supported all-ceramic FDP using finite element analysis (FEA). Two titanium dental implants, their abutments, screws, and a three-unit all-ceramic FDP were scanned using a micro-CT scanner. Three 3D models with altered distal connector heights (3, 4, and 5 mm) were generated and analyzed on ABAQUS FEA software. The maximum principal stress values in MPa observed for each model with different connector heights and their respective locations (MA = mesial abutment; DA = distal abutment; F = framework; V = veneer) were: 3 mm—219 (MA), 88 (DA), 11 (F), 16 (V); 4 mm—194 (MA), 82 (DA), 8 (F), 18 (V); 5 mm—194 (MA), 80 (DA), 8 (F), and 18 (V). All the assembled models demonstrated the peak stresses at the neck area on the mesial abutments. The connector height had a significant influence on the stress distribution of the prosthesis. The models with higher distal connectors (4 and 5 mm) had a lower and more uniform distribution of maximum principal stresses (except for the veneer layer) when compared with the model with the smallest distal connector.
- Subjects
FINITE element method; OSSEOINTEGRATED dental implants; DENTURES; STRESS concentration; DENTAL implants; X-ray computed microtomography; PROSTHETICS
- Publication
Symmetry (20738994), 2022, Vol 14, Issue 11, p2334
- ISSN
2073-8994
- Publication type
Article
- DOI
10.3390/sym14112334