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Subject

Evaluation of mandibular lingula and foramen location using 3-dimensional mandible models reconstructed by conebeam computed tomography
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논문 기본 정보

Type
Academic journal
Author
Cong Zhou (Shandong University) Tae Yeon Jeon (고려대학교) Jun Sang Ho (고려대학교) 권종진 (고려대학교)
Journal
Korean Association of Maxillofacial Plastic and Reconstructive Surgeons Maxillofacial Plastic Reconstructive Surgery Maxillofacial Plastic Reconstructive Surgery 제39권 제10호 KCI Accredited Journals
Published
2017.10
Pages
1 - 7 (7page)

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Evaluation of mandibular lingula and foramen location using 3-dimensional mandible models reconstructed by conebeam computed tomography
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Background: The positions of the mandibular lingula and foramen have been set as indexes for inferior alveolar nerve (IAN) block and ramus osteotomies in orthognathic surgery. This study aimed to evaluate the anatomical structures of mandibular ramus, especially the mandibular lingula and foramen, by analyzing the cone-beam computed tomography (CBCT) data of young adults. Methods: We evaluated 121 sides of hemi-mandibular CBCT model of 106 patients (51 male and 55 female patients; 18 to 36 years old). All the measurements were performed using the 2- and 3-dimensional rulers of OnDemand3D® software. Results: Statistical analysis of the data revealed that there was no significant difference in the mandibular angle between the genders. The mandibular lingula was found to be located at the center of ramus in males, but a little posterior in relation to the center in females. The mandibular lingula was rarely located below the occlusal plane; however, the position of the mandibular foramen was more variable (84.3% below, 12.4% above, and 3.3% at the level of the occlusal plane). Conclusions: The results of this study provide a valuable guideline for IAN block anesthesia and orthognathic surgery. CBCT can be considered effective and accurate in evaluating the fine structures of the mandible

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