Effect of cap micro-movement on the selection of implants’ attachment type | ||
| Journal of the Arab Society for Medical Research | ||
| Volume 16, Issue 2, July 2021, Pages 137-142 PDF (1016.4 K) | ||
| DOI: 10.4103/jasmr.jasmr_21_21 | ||
| Abstract | ||
| Background/aim Cap micro-movement may affect load transfer to the osseointegrated implant/bone interface, which in turn may affect the selection of attachment type to ensure the least amount of bone loss, fewer maintenance periods, and longer lifetime of the entire implant/attachment system. This study aimed to evaluate the cap micro-movement effect using various implant angulations on the selection of the best attachment system for each individual case. Materials and methods Six finite element models were prepared and were equally divided between locator attachment and ball attachment. Every three models simulate vertical implant and inclined implants by 10° and 20° of angulation, respectively. Meanwhile, frictional contact enabling cap micro-movement at the cap/attachment interface was implemented. Results Nonlinear static analysis results showed that implant and locator attachment body received very low stresses in comparison to the ball attachment. Nylon cap life expected to be longer in the case of 20° angulated implant with ball attachment, while all other cases indicated locator attachment superiority. Cortical bone received less stresses under locator attachment, while the gap in stress values in comparison to ball attachment will be reduced by increasing implant angulation. Conclusions Locator attachment seems to be more superior to ball attachment. However, increasing implant angulation up to 20° may result in showing a similar behavior with both attachment types. | ||
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