How Do Implant Threads and Diameters Affect the All-On Success? a 3d Finite Element Analysis Study
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Date
2022
Authors
Zor,Z.F.
Klllnç,Y.
Erkmen,E.
Kurt,A.
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Journal ISSN
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Publisher
IOS Press BV
Open Access Color
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Abstract
BACKGROUND: The effect of different thread designs and diameters on the all-on-four concept is unclear. OBJECTIVE: The aim of the study was to clarify the differences in stress distribution of dental implants with various thread designs and diameters based on the all-on-four concept with three dimensional (3D) finite element analysis (FEA). METHODS: A 3D model of a totally edentulous mandible was used to perform the FEA. Four different models (M1, M2, M3, and M4) including 3.5 and 4.3 mm diameter dental implants with active and passive threaded designs were generated. The dental implants were positioned according to the all-on-four concept. The Von Mises stresses on dental implants and maximum and minimum principal stresses (Pmax and Pmin) on bony structures were calculated under vertical, oblique and horizontal loads. RESULTS: For Von Mises stresses, the highest stress values were detected on the distal implants for all models. Distal implants had also the highest stress values for vertical loading. The Von Mises stresses were found to be concentrated around the implant's neck. In all models the highest Pmax and Pmin stresses occurred in the bone surrounding the distal implant. It was noted that the active threaded implants showed the highest Pmax and Pmin stress values. CONCLUSION: The implant thread design and diameter might have a strong influence on the stress values in the all-on-four concept. © 2022 - IOS Press. All rights reserved.
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Keywords
All-on-four, dental implant, diameter, finite element analysis, thread design
Turkish CoHE Thesis Center URL
Fields of Science
Citation
2
WoS Q
Q4
Scopus Q
Q4
Source
Technology and Health Care
Volume
30
Issue
5
Start Page
1031
End Page
1042