A simplified method to assess precision of fit between framework and supporting implants: a preliminary study

Area of Science:

• Biomaterials Science
• Dental Implantology
• Prosthodontics

Background:

• Assessing the precision of fit between implant-supported prostheses and supporting implants is crucial for long-term success.
• Traditional methods for evaluating framework fit can be complex and time-consuming in clinical settings.

Purpose of the Study:

• To introduce a simplified clinical method for evaluating the precision of fit for screw-retained frameworks on dental implants.
• To assess the feasibility of using torque-angle signature analysis with the OsseoCare device for this purpose.

Main Methods:

• Three titanium frameworks were fabricated using distinct methods: 1-piece casting, computer numeric controlled (CNC) machining, and Cresco Ti Precision (CTiP).
• The OsseoCare device was employed to perform torque-angle signature analysis on the fabricated frameworks.
• Analysis focused on identifying tension within the framework-implant interface.

Main Results:

• Frameworks produced via CNC and CTiP methods exhibited torque-angle signature analysis results comparable to passively fitting reference models.
• The 1-piece cast framework did not yield results indicative of a passive fit.
• The OsseoCare device successfully generated tracings for analysis.

Conclusions:

• The OsseoCare device, in conjunction with torque-angle signature analysis, offers a feasible approach for the clinical assessment of framework fit.
• This pilot study suggests that CNC and CTiP fabrication methods result in superior framework fit compared to 1-piece casting.