Volume 8, Issue 2 (laser medicine journal 2011)                   lmj 2011, 8(2): 35-41 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Evaluation of Platform Switched Laser-Lok implant on the stress distribution of crestal boneby Finite Element Analysis. lmj 2011; 8 (2) :35-41
URL: http://icml.ir/article-1-212-en.html
Abstract:   (12532 Views)
Background: This research analyzes the effect of platform switching design of Laser-Lok implants on the stress distribution in crestal bone of the Laser-Lok implant collar and its surrounding bone interface through Finite Element Analysis (FEA). The results are compared with control implant to show the effect of Laser-Lok implants platform switching design on the stress distribution in crestal bone.
Material and Methods:  Three-dimensional modeles of the Laser-Lok implant with platform switching, the control implant (a Laser-Lok implant with same size abutment), and the mandible bone is generated for the FEA. Each implant is assembled on the mandible bone in pre-molar considering the proper boundary condition. It should be mentioned that the control implant is similar in all features to the independent implant (LL) except from the size of abutment. After meshing and considering the proper elements regarding the mastication forces and normal condition, a 100N of axial and oblique loading with angles of  15 and 45 angle is applied to the centre of the abutments of both Independent Laser-Lok implant and control implant on same condition.
Results:  Under different loading conditions the independent implant has shown better results and lower stress distribution on surrounding crestal bone, comparing with control implant. Results demonstrate  that the platform switching design will not only ignore the Laser-Lok fixture advantage of reducing the shear forces and bone loss but also will reduce stress concentration on the critical points of upper parts of the crestal bone. Hence transferring the stress distribution to the lower parts of the crestal bone-collar interface.
Conclusion: It should be considered that only reducing the shear forces is not enough to decrease crestal bone loss. In this regard, excluding the biological factors should also be considered. Therefore, the platform switching design is proposed as a way to inhibit the interstitial fluid flow to surrounding tissues by creating a platform on the abutment-fixture interface and it is a biological advantages. Total results indicate  that Laser-Lok implant with platform switching has not only all the advantages of control implant in reducing the shear forces on crestal bone-collar interface but also has its own advantage of reducing the crestal bone loss by eliminating  the biological factor.
Full-Text [PDF 493 kb]   (1876 Downloads)    
Educational: Applicable | Subject: General
Received: 2011/02/16 | Accepted: 2011/05/7 | Published: 2011/07/15

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2025 CC BY-NC 4.0 | Journal of Lasers in Medicine

Designed & Developed by : Yektaweb