Effect of using rigid versus nonrigid attachments on stresses induced in peri-implant bone in implant-supported prostheses (finite element analysis): a nonrandomized in-vitro study

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Abstract

Background
Peri-implant bone stresses can sometimes be detrimental. Efforts are made in order to keep these stresses at the normal level.
Methods
A finite element analysis was carried out in which two models were compared, the rigid attachment used in a fixed prosthesis versus the nonrigid one used in a removable prosthesis. Both of them were completely implant-supported.
Results
Have shown that the rigid type produced higher stresses than the nonrigid one.
Conclusion
Nonrigid attachments are more biocompatible than the rigid attachments.

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