Assessment of the risk of perforation of the mandibular canal by implant drill using density and thickness parameters

• Published in: Gerodontology 2011-09, Vol.28 (3), p.213-220
• Main Authors: Başa, Onur, Dilek, Ozkan C.
• Format: Article
• Language: English
• Subjects: Adult; Age Factors; Aged; Bicuspid - diagnostic imaging; Bone Density - physiology; Canals; Cone-Beam Computed Tomography; damage inferior alveolar nerve; Dental Arch - diagnostic imaging; Dental Implantation, Endosseous - instrumentation; Dentistry; Female; Humans; implant drills; Intraoperative Complications - prevention & control; Male; Mandible; Mandible - anatomy & histology; Mandible - diagnostic imaging; Mandible - surgery; Mandibular Injuries - etiology; Mandibular Injuries - prevention & control; Mandibular Nerve - anatomy & histology; Mandibular Nerve - diagnostic imaging; Middle Aged; Molar - diagnostic imaging; Multidetector Computed Tomography; Paresthesia - prevention & control; Risk Assessment; Sex Factors; Tomography, X-Ray Computed; Trigeminal Nerve Injuries - etiology; Trigeminal Nerve Injuries - prevention & control; Young Adult
• ISSN: 0734-0664; 1741-2358
• DOI: 10.1111/j.1741-2358.2009.00362.x

Gerodontology 2009; doi: 10.1111/j.1741‐2358.2009.00362.x 
 Assessment of the risk of perforation of the mandibular canal by implant drill using density and thickness parameters Objective:  The objective of this study was to investigate whether the resistance of the bone surrounding the mandibular canal had sufficient density and thickness to avoid perforation by drills when preparing the bed of the implant. Background:  Damage to the inferior alveolar nerve (IAN) is more common than expected. This injury may lead to serious complications ranging from mild paresthesia to total anaesthesia of the lower jaw. Materials and methods:  The CT images of 99 patients, whose ages ranged between 20 and 79 years, and who applied for an implant application to the posterior aspect of the mandible were included in this study. Results:  The overall average bone thickness in the premolar and molar regions was 0.8717 ± 0.1818 and 0.8556 ± 0.1756 mm, respectively, whereas the bone density in the premolar and molar regions was 649.18 ± 241.42 and 584.44 ± 222.73 Hounsfield Units (HU), respectively (p