Accuracy of a novel prototype dynamic computer-assisted surgery system.

Area of Science:

• Oral and Maxillofacial Surgery
• Biomedical Engineering
• Dental Implantology

Background:

• Computer-assisted surgery (CAS) systems are increasingly utilized for precise dental implant placement.
• Evaluating novel dynamic CAS systems against established static CAS and conventional methods is crucial for advancing surgical accuracy.

Purpose of the Study:

• To implement and assess the accuracy of a prototype dynamic CAS system for osteotomy preparation in dental implant surgery.
• To compare the accuracy of this dynamic system against three commercial static CAS systems and a laboratory-made acrylic stent.

Main Methods:

• Eight osteotomies were prepared in typodonts, and data were imported into dynamic and static CAS systems for planning.
• Guides were fabricated, and osteotomies were prepared in a clinical setting by experienced clinicians.
• Stereo optical tracking cameras measured deviations between planned and actual osteotomies across five modalities.

Main Results:

• The prototype dynamic CAS system exhibited accuracy comparable to static CAS systems.
• Both dynamic and static CAS systems showed superior accuracy to acrylic guides, with average errors under 2 mm and 5 degrees.
• Occasional large deviations were noted, highlighting the need for clinical consideration.

Conclusions:

• The prototype dynamic CAS system is a viable and accurate alternative for implant osteotomy preparation.
• Dynamic CAS systems offer comparable precision to static systems, enhancing surgical planning and execution.