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Year :2018
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Month :
January-February
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Volume :
7
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Issue :
1
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Page :
AO15 - AO20
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Evaluation of Inferior Alveolar Canal and its Variations using Cone Beam CT-scan
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Correspondence Address :
Manisha Laxmanbhai Chaudhary, Sonal Anchalia, Vikash Sharma,
Dr. Manisha Laxmanbhai Chaudhary,
Assistant Professor, Departmetn of Anatomy,
Dr. M K Shah Medical College, Chandkheda,
Ahmedabad-382424, Gujarat, India.
E-mail: Drmanishachaudhari6@gmail.com
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Introduction: Introduction: The knowledge of the precise location of anatomical landmarks such as mandibular foramen, Inferior Alveolar Canal (IAC), mental foramen and the course of the inferior alveolar neurovascular bundle is mandatory to obtain the desired outcome of different mandibular surgical procedures and overcome various surgical complications.
Aim: To document a clinically relevant position of the Inferior Alveolar Nerve (IAN) in completely dentate patients, to identify the linear relationship of the IAC to the buccal and lingual cortex (BCP/LCP) of the mandible and to the peri apex of the teeth as well as to assess the presence and course of the anterior loop in the mental foramen region according to the gender and side, using Cone Beam Computerised Tomography (CBCT).
Materials and Methods: This cross-sectional study utilised 378 CBCT images from 232 patients (one patient may has images of both side of mandible which are counted as two separate images) to obtain quantifiable data to localise the IAC. Measurements to the IAC were made from the BCP and LCP and the root apices of the mandibular premolars and molars.
Results: In 15 subjects, 18 Accessory Mental Foramina (AMF) were detected. Anterior loop in the mental region was detected in 91% of the scans. The IAC was noted to be closest to the buccal cortical plate in the region of premolars on both sides. The distance between the lingual outer cortex to outer surface of the IAC along lingual side, distance between buccal outer cortex to outer surface of the IAC along buccal side, distance between the peri apex to the superior surface of IAC were recorded to assess accurately the position of the IAN within the IAC.
Conclusion: CBCT may be utilised to meet the increasing demand for accurate preoperative assessment and planning prior to surgeries of the maxillofacial region by obtaining information on the appearance, location and course of the IAC and its relation to other anatomical structures in the mandible.
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