Skip to main content Skip to main navigation menu Skip to site footer

CBCT evaluation of anterior loop length and mental foramen position in Vietnamese Population (CBCT Evaluation of Anterior Loop Length)



Abstract

Objective: The purpose of this study was to evaluate the prevalence and length of anterior loop, and determine the accurate position of the mental foramen in Vietnamese population.Material and Methods: One hundred and twelve CBCT scans taken within July 2017 until February 2020 were used in this study. All images were evaluated using OsiriX DICOM Viewer. The loop length on both side of the mandible was assessed using oblique transverse method by one examiner based on a standardized procedure. The data collected were analyzed using SPSS ver.26.0..Results: The prevalence of the loop was 92.9% of the sample. The mean of anterior loop length was 1.72 ± 1.00mm. There was no significant difference between genders or sides of the mandible. The most common position of the mental foramen was in line with the axis of the second premolar and below the apices of the premolars.Conclusion: Cautions should be taken when placing implant in proximity to the mental foramen as anterior loop is present in most of the case. Based on this study, it is considered safer to place implant 5mm anterior to the mental foramen for Vietnamese population
Keywords: Anterior loop CBCT Cone- beam computed tomography Dental implant Mental foramen
Section

References

  1. Tolstunov L. Implant zones of the jaws: implant location
  2. and related success rate. J Oral Implantol 2007;33: 211-220.
  3. Phillips JL, Weller RN, Kulild JC. The mental foramen: 1.
  4. Size, orientation, and positional relationship to the mandibular second premolar. J Endod 1990;16: 221-223.
  5. Apostolakis D, Brown JE. The anterior loop of the inferior
  6. alveolar nerve: prevalence, measurement of its length and
  7. a recommendation for interforaminal implant installation
  8. based on cone beam CT imaging. Clin Oral Implants Res
  9. ;23: 1022-1030.
  10. Kieser J, Kuzmanovic D, Payne A, et al. Patterns of emergence of the human mental nerve. Arch Oral Biol 2002;47:
  11. -747.
  12. Shaban B, Khajavi A, Khaki N, et al. Assessment of the
  13. anterior loop of the inferior alveolar nerve via cone-beam
  14. computed tomography. J Korean Assoc Oral Maxillofac
  15. Surg 2017;43: 395-400.
  16. Velasco-Torres M, Padial-Molina M, Avila-Ortiz G, et al.
  17. Inferior alveolar nerve trajectory, mental foramen location
  18. and incidence of mental nerve anterior loop. Med Oral
  19. Patol Oral Cir Bucal 2017;22: e630-e635.
  20. Al-Mahalawy H, Al-Aithan H, Al-Kari B, et al.
  21. Determination of the position of mental foramen and frequency of anterior loop in Saudi population. A retrospective CBCT study. Saudi Dent J 2017;29: 29-35.
  22. Kutuk N, Demirbas AE, Gonen ZB, et al. Anterior mandibular zone safe for implants. J Craniofac Surg 2013;24:
  23. e405-e408.
  24. Mardinger O, Chaushu G, Arensburg B, et al. Anterior
  25. loop of the mental canal: an anatomical-radiologic study.
  26. Implant Dent 2000;9: 120-125.
  27. de-Brito AC, Nejaim Y, de Freitas DQ, et al. Panoramic
  28. radiographs underestimate extensions of the anterior loop
  29. and mandibular incisive canal. Imaging Sci Dent 2016;46:
  30. -165.
  31. Bou-Serhal C, Jacobs R, Flygare L, et al. Perioperative
  32. validation of localisation of the mental foramen.
  33. Dentomaxillofac Radiol 2002;31: 39-43.
  34. Lu CI, Won J, Al-Ardah A, et al. Assessment of the anterior
  35. loop of the mental nerve using cone beam computerized
  36. tomography scan. J Oral Implantol 2015;41: 632-639.
  37. Neiva RF, Gapski R, Wang HL. Morphometric analysis of
  38. implant-related anatomy in Caucasian skulls. J Periodontol
  39. ;75: 1061-1067.
  40. Wong SK, Patil PG. Measuring anterior loop length of the
  41. inferior alveolar nerve to estimate safe zone in implant
  42. planning: A CBCT study in a Malaysian population. J
  43. Prosthet Dent 2018;120: 210-213.
  44. Jacobs R, Mraiwa N, vanSteenberghe D, et al. Appearance,
  45. location, course, and morphology of the mandibular incisive canal: an assessment on spiral CT scan.
  46. Dentomaxillofac Radiol 2002;31: 322-327.
  47. Prados-Frutos JC, Salinas-Goodier C, Manchon A, et al.
  48. Anterior loop of the mental nerve, mental foramen and
  49. incisive nerve emergency: tridimensional assessment and
  50. surgical applications. Surg Radiol Anat 2017;39: 169-175.
  51. Uchida Y, Yamashita Y, Goto M, et al. Measurement of
  52. anterior loop length for the mandibular canal and diameter of the mandibular incisive canal to avoid nerve damage
  53. when installing endosseous implants in the interforaminal
  54. region. J Oral Maxillofac Surg 2007;65: 1772-1779.
  55. Misch CE, Crawford EA. Predictable mandibular nerve
  56. location-a clinical zone of safety. Int J Oral Implantol
  57. ;7: 37-40.
  58. Kaya Y, Sencimen M, Sahin S, et al. Retrospective radiographic evaluation of the anterior loop of the mental nerve:
  59. comparison between panoramic radiography and spiral
  60. computerized tomography. Int J Oral Maxillofac Implants
  61. ;23: 919-925.
  62. Bavitz JB, Harn SD, Hansen CA, et al. An anatomical study
  63. of mental neurovascular bundle-implant relationships. Int
  64. J Oral Maxillofac Implants 1993;8: 563-567.
  65. Kuzmanovic DV, Payne AG, Kieser JA, et al. Anterior loop
  66. of the mental nerve: a morphological and radiographic
  67. study. Clin Oral Implants Res 2003;14: 464-471.
  68. Parnami P, Gupta D, Arora V, et al. Assessment of the horizontal and vertical position of mental foramen in indian
  69. population in terms of age and sex in dentate subjects
  70. by pano-ramic radiographs: A retrospective study with
  71. review of literature. Open Dent J 2015;9: 297-302.
  72. Alam MK, Alhabib S, Alzarea BK, et al. 3D CBCT morphometric assessment of mental foramen in Arabic population and global comparison: imperative for invasive and
  73. non-invasive procedures in mandible. Acta Odontol Scand
  74. ;76: 98-104.

How to Cite

Nguyen, Q. H., Putra, P. J., Nguyen, H., Giap, H.-V., & Florenly, F. (2021). CBCT evaluation of anterior loop length and mental foramen position in Vietnamese Population (CBCT Evaluation of Anterior Loop Length). Journal of Dentomaxillofacial Science, 6(2), 75–79. https://doi.org/10.15562/jdmfs.v6i2.1173
ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver
Download Citation
Endnote/Zotero/Mendeley (RIS) BibTeX

HTML
326

Total
14

Share