Proximity of the Mandibular Canal to Teeth and Cortical Bone

Kawashima, Y; Sakai, Osamu; Shosho, Dhurata; Kaneda, Takashi; Gohel, Anita

doi:10.1016/j.joen.2015.11.009

Cited by 29 publications

(43 citation statements)

References 21 publications

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“…It has three branches, one of which is in the skin of the mental area, and the others are in the lower lip, mucous membrane, and gingiva1. Mandibular canals in the molar area are located close to the apex of the second molar2, bypassing the third molar34.…”

Section: Introductionmentioning

confidence: 99%

Anatomical position of the mandibular canal in relation to the buccal cortical bone: relevance to sagittal split osteotomy

Lee

Han

2018

J Korean Assoc Oral Maxillofac Surg

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ObjectivesClassification of the degree of postoperative nerve damage according to contact with the mandibular canal and buccal cortical bone has been studied, but there is a lack of research on the difference in postoperative courses according to contact with buccal cortical bone. In this study, we divided patients into groups according to contact between the mandibular canal and the buccal cortical bone, and we compared the position of the mandibular canal in the second and first molar areas.Materials and MethodsClass III patients who visited the Dankook University Dental Hospital were included in this study. The following measurements were made at the second and first molar positions: (1) length between the outer margin of the mandibular canal and the buccal cortical margin (a); (2) mandibular thickness at the same level (b); (3) Buccolingual ratio=(a)/(b)×100; and (4) length between the inferior margin of the mandibular canal and the inferior cortical margin.ResultsThe distances from the canal to the buccal bone and from the canal to the inferior bone and mandibular thickness were significantly larger in Group II than in Group I. The buccolingual ratio of the canal was larger in Group II in the second molar region.ConclusionIf mandibular canal is in contact with the buccal cortical bone, the canal will run closer to the buccal bone and the inferior border of the mandible in the second and first molar regions.

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Section: Introductionmentioning

confidence: 99%

Anatomical position of the mandibular canal in relation to the buccal cortical bone: relevance to sagittal split osteotomy

Lee

Han

2018

J Korean Assoc Oral Maxillofac Surg

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“…The few neurosensory alterations that may occur can be limited by knowing precisely the position of the inferior alveolar nerve (Kawashima et al, 2016). While cone beam computed tomography has enabled important advances in this analysis, studies in this area are still limited.…”

Section: Introductionmentioning

confidence: 99%

Computed Tomography-Guided Bone Block Harvesting From the Mandibular Ramus

et al. 2018

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PARRA, M.; JARA, J.; NAVARRO, P.; VÁSQUEZ, B. & OLATE, S. Computed tomography-guided bone block harvesting from the mandibular ramus. Int. J. Morphol., 36(1):362-366, 2018. SUMMARY:The aim of this study was to ascertain the distance from the mandibular canal to the lateral, medial and upper zones of the mandibular ramus in order to identify safety margins that reduce the risk of nerve injuries in the process of removing a bone graft. A descriptive study was conducted, analyzing bilaterally 20 CBCT exams from different patients, taking measurements at 4 points in the central, lateral and medial areas of the corresponding mandibular ramus, which was located at a distance of 5 mm between each line, starting at the distal point of the second molar. Forty hemimandibles were included in this study, estimating a vertical distance for the 4 points of analysis, from between 16 and 17 mm, a distance laterally of 5 mm approximately and medially approximately from 3 to 3.9 mm; the lateral zone was significantly larger than the medial zone. It is estimated that the maximum achievement of a bone block from the area posterior to the second molar must be 13 mm deep and 3 mm laterally to minimize the risks of injuries to the inferior alveolar neurovascular bundle.

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“…The real relationship between the mandibular canal and the surrounding anatomical structures can be obtained using cone beam computed tomography (CBCT). 10 The aim of the present cross-sectional study is to establish the frequency of the various types of direct contacts of the root apices with the wall of the mandibular canal, and to determine gender differences in the number of such contacts in a selected Belarusian population using cone beam computed tomography.…”

Section: Introductionmentioning

confidence: 99%

Сross-sectional anatomic study of direct positional relationships between mandibular canal and roots of posterior teeth using cone beam computed tomography

Kabak¹,

Журавлева²,

Melnichenko³

et al. 2018

J Oral Res

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Objectives: To establish the frequency of the various types of direct contacts of the root apices with the wall of the mandibular canal and to determine gender differences in number of such contacts in a selected Belarusian population using cone beam computed tomography. Methodology: One hundred and two cone beam computed tomography scans were analyzed to classify the types of contact and three-dimensional relationship between the mandibular teeth and the mandibular canal. Results: The direct contact between the teeth and the mandibular canal was observed in 63.7% of patients. Overall 300 roots of 189 teeth were in direct contact with the mandibular canal: 9.3% were second premolars, 14.7% were first molars, 33.8% were second molars and 50.0% were third molars. There were no statistically significant differences in the number of teeth with direct contact with the mandibular canal between males and females. Conclusion: The direct contact of the root apices with the mandibular canal was most often found in the second and third molars. The root apices of the third molars had the greatest variability of location relatively to the mandibular canal.

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Proximity of the Mandibular Canal to Teeth and Cortical Bone

Cited by 29 publications

References 21 publications

Anatomical position of the mandibular canal in relation to the buccal cortical bone: relevance to sagittal split osteotomy

Anatomical position of the mandibular canal in relation to the buccal cortical bone: relevance to sagittal split osteotomy

Computed Tomography-Guided Bone Block Harvesting From the Mandibular Ramus

Сross-sectional anatomic study of direct positional relationships between mandibular canal and roots of posterior teeth using cone beam computed tomography

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