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Radiological evaluation of inferior alveolar nerve displacement after removal of impacted mandibular third molars prior to sagittal split osteotomy.
Bagourd, Thomas; Varazzani, Andrea; Dugast, Sophie; Guyonvarc'h, Pierre; Corre, Pierre; Bertin, Hélios.
Afiliación
  • Bagourd T; Service de Chirurgie Maxillo-Faciale et Stomatologie, CHU Nantes, Nantes Université, Nantes F-44000, France.
  • Varazzani A; Chirurgie Maxillo-Faciale, Chirurgie Plastique, Stomatologie et Chirurgie Orale, Hospices Civils de Lyon, Lyon-Sud Hospital - Claude-Bernard Lyon 1, 165 Chemin du Grand-Revoyet, Pierre-Bénite 69310, France.
  • Dugast S; Service de Chirurgie Maxillo-Faciale et Stomatologie, CHU Nantes, Nantes Université, Nantes F-44000, France.
  • Guyonvarc'h P; Service de Chirurgie Maxillo-Faciale et Stomatologie, CHU Nantes, Nantes Université, Nantes F-44000, France.
  • Corre P; Service de Chirurgie Maxillo-Faciale et Stomatologie, CHU Nantes, Nantes Université, Nantes F-44000, France; Nantes Université, Oniris, UnivAngers, INSERM, Regenerative Medicine and Skeleton, CHU Nantes, RMeS, UMR 1229, Nantes F-44000, France.
  • Bertin H; Service de Chirurgie Maxillo-Faciale et Stomatologie, CHU Nantes, Nantes Université, Nantes F-44000, France; UnivAngers, INSERM, CNRS, CHU Nantes, Nantes Université, CRCI2NA, Nantes F-44000, France. Electronic address: helios.bertin@chu-nantes.fr.
J Stomatol Oral Maxillofac Surg ; 124(6S2): 101658, 2023 Dec.
Article en En | MEDLINE | ID: mdl-37866504
INTRODUCTION: We hypothesize that the removal of mandibular third molars (M3) 6 months prior to a bilateral sagittal split osteotomy (BSSO) could allow the displacement of the inferior alveolar nerve (IAN) in a favorable lingual position. This study aimed to radiographically compare the position of IAN before and after M3 removal in patients with Class II malocclusion. MATERIALS AND METHOD: The CBCT images of 30 randomly selected patients (mean age 15.5 years, 19 females and 11 males) were segmented regarding the mandibular bone and the IAN canal. Mandibles were then superimposed and compared using 3D slicer (www.slicer.org). An orthonormal system was constructed, and the coordinates of IAN were assessed in the x- (horizontal axis), y- (depth axis), and z- (vertical axis) directions. RESULTS: The mean changes in x- and z-values were 0.37 %, -0.09 % for the right IAN, 0.07 %, and -0.10 % for the left IAN, respectively. Y-axis was the dimension the most impacted by the M3 removal with a mean variation of -11.96 % for the right IAN, and 0.45 % for the left nerve (p1=0.74 and p2=0.04, respectively). Three patients presented a change in the IAN position superior to 1 mm on at least one coordinate axis. We observed a more important change in x-values of the right IAN in male than in female (p = 0.04), and no significant modifications regarding the other dimensions. Finally, there was no correlation between the age of the patients and the changes in IAN position. CONCLUSION: This study confirms the absence of influence of mandibular third molar removal on the inferior alveolar nerve route prior to BSSO.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Diente Impactado / Traumatismos del Nervio Trigémino Límite: Adolescent / Female / Humans / Male Idioma: En Revista: J Stomatol Oral Maxillofac Surg Año: 2023 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Francia
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Diente Impactado / Traumatismos del Nervio Trigémino Límite: Adolescent / Female / Humans / Male Idioma: En Revista: J Stomatol Oral Maxillofac Surg Año: 2023 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Francia