Ibrahim Barrak1, Árpád Joób-Fancsaly2, Gábor Braunitzer3, Endre Varga4, Kristóf Boa5, József Piffkó6. 1. PhD Student, Department of Oral and Maxillofacial Surgery, Szeged, University of Szeged, Szeged, Hungary. 2. Associate Professor, Head, Department of Dentoalveolar Surgery, Semmelweis University, Budapest, Hungary. 3. Research Fellow, Laboratory for Perception & Cognition and Clinical Neuroscience, Nyírő Gyula Hospital, Budapest, Hungary. 4. Private Practice Dentist, Dental Garden, Szeged, Hungary. 5. Resident Physician, Department of Oral and Maxillofacial Surgery, University of Szeged, Szeged, Hungary. 6. Professor, Head, Department of Oral and Maxillofacial Surgery, University of Szeged, Szeged, Hungary.
Abstract
OBJECTIVE: To investigate drill wear and consequent intraosseous temperature elevation during freehand and guided bone drilling, with attention to the effect of metal-on-metal contact during guided drilling. MATERIALS AND METHODS: Osteotomies were performed on bovine ribs, with 2.0 mm diameter stainless steel drill bits of the SMART Guide System, under 3 sterilization protocols, at 800, 1200, 1500, and 2000 rpm. Sterilization was performed after every 3 drilling. Temperature was measured after every 30 drilling. RESULTS: The studied contributing factors had a cumulative effect, and each contributed significantly to temperature elevation. Whether guide use led to a near-necrotic (47°C) temperature increment depended largely on the applied sterilization protocol. CONCLUSION: The metal sleeve is a significant contributing factor to heat generation during guided osteotomy, but its effect can be offset by keeping the other studied factors under control.
OBJECTIVE: To investigate drill wear and consequent intraosseous temperature elevation during freehand and guided bone drilling, with attention to the effect of metal-on-metal contact during guided drilling. MATERIALS AND METHODS: Osteotomies were performed on bovine ribs, with 2.0 mm diameter stainless steeldrill bits of the SMART Guide System, under 3 sterilization protocols, at 800, 1200, 1500, and 2000 rpm. Sterilization was performed after every 3 drilling. Temperature was measured after every 30 drilling. RESULTS: The studied contributing factors had a cumulative effect, and each contributed significantly to temperature elevation. Whether guide use led to a near-necrotic (47°C) temperature increment depended largely on the applied sterilization protocol. CONCLUSION: The metal sleeve is a significant contributing factor to heat generation during guided osteotomy, but its effect can be offset by keeping the other studied factors under control.