Dentistry

CBCT utilization for assessment of the potential risk following implant placement in fresh extraction sites of the posterior mandible

23^rd International Conference on Dentistry and Dental Materials

July 19-20, 2018 | Rome, Italy

Bahaa Haj Yahya

Rabin Medical Center, Israel

Posters & Accepted Abstracts: Dentistry

Abstract:

Background: Immediate implant placement (IIP) is a reliable procedure with 93.9% to 100% survival rate. Purpose: The purpose of this study is to assess the risks of performing IIP in the posterior mandible. Materials & Methods: 100 pre-extraction cone beam computed tomography (CBCT) scans were analyzed. The main outcome parameters were the distance from tooth apices to the mandibular canal and lingual plate. Results: 48% of second premolar, 32% of first molar and 64% of second molar had <6 mm of bone available for IIP and were thus considered a high risk for Inferior Alveolar Nerve (IAN) injury. The mean root to alveolar canal (RAC) of first mandibular molar was the highest (7.56±2.71mm), second molar (5.44±2.95mm) was the lowest. The difference of the mean RAC distance in each tooth type was statistically significant (p<0.005). In females, nonsmokers and patients under 40 years, lower mean RAC and higher risk was noted for IIP for all teeth included in the present study. Conclusions: Placing an immediate implant may present a high risk for IAN injury and lingual plate perforation with no regard to the specific root or the different side of the mouth. Among the examined teeth, the second molar posses the highest risk.