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Open AccessArticle

A CBCT Based Three-Dimensional Assessment of Mandibular Posterior Region for Evaluating the Possibility of Bypassing the Inferior Alveolar Nerve While Placing Dental Implants

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Prosthodontics, Prosthetic Dental Sciences, College of Dentistry, Jouf University, Sakakah 72345, Saudi Arabia
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Oral Medicine & Radiology, Department of Oral & Maxillofacial Surgery & Diagnostic Sciences, College of Dentistry, Jouf University, Sakakah 72345, Saudi Arabia
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Periodontics, Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakakah 72345, Saudi Arabia
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Department of Prosthodontics, King Fahad Military Medical Complex, Dhahran 31932, Saudi Arabia
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Department of Oral Basic and Clinical Sciences, College of Dentistry, Taibah University, Al Madinah Al Munawarah 42353, Saudi Arabia
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Department of Oral Surgery, Oral Medicine and Periodontics, School of Dentistry, University of Jordan, Amman 11942, Jordan
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Department of General Medicine, Al Rajhi Medical college, Al Bukayriyah 52736, Saudi Arabia
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King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Enzymoics, 7 Peterlee Place, Hebersham, NSW 2770, Australia
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Novel Global Community Educational Foundation, Hebersham 2770, Australia
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Orthodontic Division, Preventive Dentistry Department, College of Dentistry, Jouf University, Skaka 72345, Saudi Arabia
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Author to whom correspondence should be addressed.
Diagnostics 2020, 10(6), 406; https://doi.org/10.3390/diagnostics10060406
Received: 26 May 2020 / Revised: 9 June 2020 / Accepted: 12 June 2020 / Published: 14 June 2020
(This article belongs to the Section Point-of-Care Diagnostics and Devices)
A high rate of nerve injury and related consequences are seen during implant placement in the posterior mandibular arch. An approach has been proposed to avoid nerve injury by dodging the inferior alveolar nerve (IAN) while placing an implant. A prospective study with a total of 240 CBCT (cone beam computed tomography) images of patients with three dentate statuses, namely, edentulous (group I), partially edentulous (group II) and dentate (group III) were included in the study. The nerve path tracing was done on CBCT images with On-demand 3D software. The three dimensions, i.e., the linear distance from the outer buccal cortical plate to the inferior alveolar nerve (BCPN), linear distance from the outer lingual cortical plate to the inferior alveolar nerve (LCPN) and linear distance from the midpoint of the alveolar crest to the inferior alveolar nerve (ACN) were assessed. The data were presented and analyzed between variables using one-way ANOVA and independent t-test in SPSS version 21.LCPN of the right 1st premolar region (p < 0.05) was significantly different among the groups with edentulous subjects recorded with the minimum value (6.50 ± 1.20 mm). Females were found to have significantly (p < 0.05) less available bone (6.03 ± 1.46 mm) on the right side of the mandibular jaw compared to males in edentulous group of patients. On comparing age groups for partially edentulous subjects, LCPN of the right 1st premolar region had significantly (p < 0.05) less available bone (6.03 ± 0.38 mm) in subjects with age ≥54 years. The IAN follows a lingual course in the molar region and later flips to the buccal side in the premolar region. The LCPN dimension in the 1st and 2nd premolar region was found to be more than 6 mm irrespective of age, gender and side of the jaw. Thus, it can be considered as a suitable site for placing implants while bypassing the IAN with CBCT assessment remaining as the mainstay in the pre-surgical phase. View Full-Text
Keywords: conebeam computed tomography; dental implant; buccolingual; inferior alveolar nerve canal tracing; inferior alveolar nerve injury conebeam computed tomography; dental implant; buccolingual; inferior alveolar nerve canal tracing; inferior alveolar nerve injury
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Sghaireen, M.G.; Srivastava, K.C.; Shrivastava, D.; Ganji, K.K.; Patil, S.R.; Abuonq, A.; Mousa, M.A.; Dar-Odeh, N.; Sghaireen, G.M.; Kamal, M.A.; Alam, M.K. A CBCT Based Three-Dimensional Assessment of Mandibular Posterior Region for Evaluating the Possibility of Bypassing the Inferior Alveolar Nerve While Placing Dental Implants. Diagnostics 2020, 10, 406.

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