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Volume 22 , Issue 5
September/October 2007

Pages 831838

A Simplified Method to Assess Precision of Fit Between Framework and Supporting Implants: A Preliminary Study

Angelo Calderini, MD, DDS/Carlo Maiorana, MD, DDS/Giuliano Garlini, DDS/Tommaso Abbondanza, CDT

PMID: 17974120

Purpose: To present a simplified method for assessment of precision of fit between screw-retained frameworks and supporting implants in clinical situations. Materials and Methods: Torque-angle signature analysis is a method for analysis of tension within a joint. The OsseoCare device developed by Nobel Biocare was utilized for the tests. Three titanium frameworks were fabricated on the same master cast according to 3 different methods: (1) 1-piece casting, (2) the CNC (computer numeric controlled) method, and (3) the CTiP (Cresco Ti Precision) method. These frameworks were used to test the device and indirectly the application of the torque-angle signature analysis technology. Results: The frameworks fabricated according to the CNC and CTiP methods demonstrated OsseoCare tracings similar to the reference models of passively fitting joints, while the 1-piece cast framework did not. Conclusion: According to this pilot study, the OsseoCare device and torque-angle signature analysis proved to be feasible for clinical assessment of fit between frameworks and supporting implants. Int J Oral Maxillofac Implants 2007;22:831838

Key words: assessment of fit, dental implants, titanium frameworks, torque-angle signature analysis

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