Influence of helix angle and density on primary stability of immediately loaded dental implants: three-dimensional finite element analysis / 中华口腔医学杂志
Chinese Journal of Stomatology
; (12): 618-621, 2007.
Article
in Zh
| WPRIM
| ID: wpr-359677
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To analyze effects of different thread helix angles and densities on the primary stability of immediately loaded implants using the three-dimensional finite element model analysis.</p><p><b>METHODS</b>Five models of three-dimensional finite element (0.8 mm, 1.6 mm, 2.4 mm, double-threaded, and triple-threaded) were created using the commercial codes of Pro/E software, Hypermesh software, and ABAQUS software. In conditions of horizontal and vertical loading, the micro-motion of the finite element models with different thread helix angles and densities were computed with ABAQUS software.</p><p><b>RESULTS</b>Concerning different thread helix angles, the micro-motion of single-threaded implant was the minimum and that of the triple-threaded was the maximum with vertical and horizontal loading. The micro-motion of doubled-threaded implant was the minimum compared with thread pitch 1.6 mm and the micro-motion of triple-threaded implant was the minimum compared with thread pitch 2.4 mm with vertical and horizontal loading.</p><p><b>CONCLUSIONS</b>The thread helix angle and density of implants can greatly affect the vertical interfacial micro-motion. With increasing thread pitchs, the resistance of implant to vertical load is weakened; with increasing thread helix angle, the resistance of implant to vertical load is weakened; with increasing thread density, the resistance of implant to the vertical load is weakened.</p>
Full text:
1
Database:
WPRIM
Main subject:
Dental Implants
/
Denture Retention
/
Dental Prosthesis Design
/
Finite Element Analysis
/
Dental Stress Analysis
Language:
Zh
Journal:
Chinese Journal of Stomatology
Year:
2007
Document type:
Article