Safe zone for bone harvesting from the interforaminal region of the mandible

Al-Ani, O.; Nambiar, P.; Ha, K.O.; Ngeow, W.C. (2013) Safe zone for bone harvesting from the interforaminal region of the mandible. Clinical Oral Implants Research, 24. pp. 115-121. ISSN 0905-7161

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    Aims: The mandibular incisive nerve can be subjected to iatrogenic injury during bone graft harvesting. Using cone beam computed tomography (CBCT), this study aims to determine a safe zone for bone graft harvesting that avoids injuring this nerve. Methods: Sixty CBCT examinations of patients were included in this study. The examinations were taken using the i-CAT CBCT imaging system, applying a standardized exposure protocol. Image reconstruction from the raw data was performed using the SimPlant dental implant software. The distances of mandibular incisive canal (MIC) to the inferior border and the labial and lingual cortices of the mandible were measured at 3, 5, 7 and 9mm mesial to the mental foramen. Results: The MIC was visible in all (100) CBCT images. The median distance and interquartile range from the lower border of the mandible was 9.86 (2.51) mm, curving downwards toward the inferior mandibular border at the symphysis menti. It was located closer to the buccal border of the mandible (3.15 1.28 mm) than lingual cortex (4.78 2.0 mm). The MIC curves toward the lingual side at the symphysis menti. There was gender difference in a number of these measurements. Current recommendation for chin bone graft harvesting can be applied to Asian subjects. Conclusions: While acknowledging that there is human variability, this study provides an accurate anatomic location of the MIC, which in turn helps to determine a safe zone for chin bone graft harvesting. This information can become a useful guide in centers where CBCT is not available.

    Item Type: Article
    1. Al-Ani, O.
    2. Nambiar, P.
    3. Ha, K.O.
    4. Ngeow, W.C.
    Journal or Publication Title: Clinical Oral Implants Research
    Additional Information: ISI Document Delivery No.: 185JR Times Cited: 0 Cited Reference Count: 27 Cited References: Bovi M, 2005, INT J PERIODONT REST, V25, P375 De Andrade E, 2001, INT J PERIODONT REST, V21, P591 De Long WG, 2007, J BONE JOINT SURG AM, V89A, P649, DOI 10.2106/JBJS.F.00465 DENISSEN HW, 1984, J PROSTHET DENT, V52, P260, DOI 10.1016/0022-3913(84)90108-2 Doran D., 2004, J ORAL MAXILLOFACIAL, V62, pS37 Hajnis Karle, 1994, P201 HOPPENREIJS TJM, 1992, J CRANIO MAXILL SURG, V20, P119, DOI 10.1016/S1010-5182(05)80093-9 Hunt DR, 1999, INT J PERIODONT REST, V19, P165 Jacobs R, 2002, DENTOMAXILLOFAC RAD, V31, P322, DOI 10.1038/sj.dmfr.4600719 Jacobs R, 2004, SURG RADIOL ANAT, V26, P329, DOI 10.1007/s00276-004-0242-2 Kamburoglu K, 2009, ORAL SURG ORAL MED O, V107, pE34, DOI 10.1016/j.tripleo.2008.10.012 Kilic C, 2010, CLIN ANAT, V23, P34, DOI 10.1002/ca.20889 KOOLE R, 1989, J CRANIO MAXILL SURG, V17, P28, DOI 10.1016/S1010-5182(89)80036-8 Makris N, 2010, CLIN ORAL IMPLAN RES, V21, P766, DOI 10.1111/j.1600-0501.2009.01903.x Maloney K, 2011, J ORAL MAXIL SURG, V69, P1923, DOI 10.1016/j.joms.2011.01.003 Mardinger O, 2000, SURG RADIOL ANAT, V22, P157, DOI 10.1007/s00276-000-0157-5 Misch C M, 1992, Int J Oral Maxillofac Implants, V7, P360 Misch C. M., 1997, INT J ORAL MAXILLOF, V12, P167 Mraiwa N, 2003, SURG RADIOL ANAT, V25, P416, DOI 10.1007/s00276-003-0152-8 Nkenke E, 2001, CLIN ORAL IMPLAN RES, V12, P495, DOI 10.1034/j.1600-0501.2001.120510.x Olivier E., 1928, BR DENT J, V49, P356 Pires C. A., 2009, CLIN IMPLANT DENT R, DOI 10.1111/j.1708-8208.2009.00228.x Pommer B, 2008, CLIN ORAL IMPLAN RES, V19, P1312, DOI 10.1111/j.1600-0501.2008.01590.x Raghoebar GM, 2007, INT J ORAL MAX IMPL, V22, P359 SINDETPEDERSEN S, 1988, J ORAL MAXIL SURG, V46, P533, DOI 10.1016/0278-2391(88)90142-5 Uchida Y, 2009, J ORAL MAXIL SURG, V67, P744, DOI 10.1016/j.joms.2008.05.352 von Arx T, 1998, Schweiz Monatsschr Zahnmed, V108, P446 Al-Ani, Omar Nambiar, Phrabhakaran Ha, Kien O. Ngeow, Wei C. Wiley-blackwell Hoboken A100
    Uncontrolled Keywords: Clinical assessment diagnosis imaging morphometric analysis radiology beam computed-tomography inferior alveolar nerve grafts chin appearance morbidity ct
    Subjects: R Medicine > RK Dentistry
    Divisions: Faculty of Dentistry > Dept of General Dental Practice And Oral & Maxillofacial Imaging
    Depositing User: Mr Ahmad Azwan Azman
    Date Deposited: 09 Sep 2013 09:39
    Last Modified: 09 Sep 2013 09:39

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