Int J Stomatol

Inter J Stomatol ›› 2017, Vol. 44 ›› Issue (6): 691-695.doi: 10.7518/gjkq.2017.06.013

• Original Articles • Previous Articles     Next Articles

Observation of accessory mental foramen within population born in Sichuan

Sun Xu1,2, Liang Xing2, Zhang Li2, Wen Cai3, Zhao Ying1, Lai Suiping1   

  1. 1. Dept. of Stomatology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China;
    2. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;
    3. Dept. of Implant and Prosthodontics, Laboratory of Orofacial Reconstruction and Regeneration, Affiliated Stomatological Hospital, Southwest Medical University, Luzhou 646000, China
  • Received:2017-01-16 Revised:2017-06-22 Online:2017-11-01 Published:2017-11-01
  • Supported by:
    This study was supported by National Natural Science Foundation of China(30672345, 30271428).

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Abstract: Objective The aim of this study was to provide anatomical data for clinical mandibular surgery and implant surgery in mental foramen(MF) area by observation of anatomical data of accessory mental foramina(AMF) of Sichuan population with application of cone beam CT(CBCT).Methods A sample of 890 cases’ CBCT data were obtained from patients visited West China Hospital of Stomatology, Sichuan University. The prevalence of AMF, diameter, diameter of corresponding ipsilateral MF, ratio between diameters of AMF and corresponding ipsilateral MF, the distance and relative position to corresponding ipsilateral MF and relative position to the adjacent teeth were observed and measured by a pro-fessional dentist. All data was statistically analyzed by statistical software SPSS 20.0. Results The incidence of AMF in Sichuan population was 6.63%. The mean diameters of AMF and their corresponding ipsilateral MF were (1.65±0.25) mm and (3.84±0.64) mm. The ratio of mean diameters of AMF to corresponding ipsilateral MF was 0.4±0.1. The mean central distance of AMF to corresponding ipsilateral MF was (5.45±0.85) mm. The relative position of AMF to adjacent anatomical structures varied greatly and mostly located posterior inferior position and anterior superior position to corresponding ipsilateral MF, as well as, between the second premolar and first molar. Conclusion The incidence of AMF in Sichuan population was high; the mean diameter was 1.65 mm, and the relative position to corresponding ipsilateral MF and adjacent teeth was diverse. In clinical implant surgery in MF area and surgery in MF area, dentists should pay attention to the existence of AMF.

Key words: accessory mental foramen, mental foramen, anatomic variations

CLC Number: 

  • R322.4+1

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