잠시만 기다려 주세요. 로딩중입니다.

Preoperative imaging of the inferior alveolar nerve canal by cone-beam computed tomography and 1-year neurosensory recovery following mandibular setback through bilateral sagittal split ramus osteotomy: a randomized clinical trial

대한구강악안면외과학회지 2020년 46권 1호 p.41 ~ 48
 ( Hassani Ali ) - Islamic Azad University Tehran Dental Branch Department of Oral and Maxillofacial Surgery

 ( Rakhshan Vahid ) - Islamic Azad University Dental School Department of Dental Anatomy
 ( Hassani Mohammad ) - Islamic Azad University Tehran Dental Branch Craniomaxillofacial Research Center
 ( Aghdam Hamidreza Mahaseni ) - Islamic Azad University Tehran Dental Branch Department of Oral and Maxillofacial Surgery

Abstract


Objectives: One of the most common complications of bilateral sagittal split ramus osteotomy (BSSRO) is neurosensory impairment of the inferior alveolar nerve (IAN). Accurate preoperative determination of the position of the IAN canal within the mandible using cone-beam computed tomography (CBCT) is recommended to prevent IAN dysfunction during BSSRO and facilitate neurosensory improvement after BSSRO.

Materials and Methods: This randomized clinical trial consisted of 86 surgical sites in 43 patients (30 females and 13 males), including 21 cases (42 sides) and 22 controls (44 sides). Panoramic and lateral cephalographs were obtained from all patients. In the experimental group, CBCT was also performed from both sides of the ramus and mandibular body. Neurosensory function of the IAN was subjectively assessed using a 5-point scale preoperatively and 7 days, 1 month, 3 months, 6 months, and 12 months post-surgery. Data were analyzed using Fisher’s test, Spearman’s test, t-test, linear mixed-model regression, and repeated-measures ANCOVA (α=0.05, 0.01).

Results: Mean sensory scores in the control group were 1.57, 2.61, 3.34, 3.73, and 4.20 over one year and were 1.69, 3.00, 3.60, 4.19, and 4.48 in the CBCT group. Significant effects were detected for CBCT intervention (P=0.002) and jaw side (P=0.003) but not for age (P=0.617) or displacement extent (P=0.122).

Conclusion: Preoperative use of CBCT may help surgeons to practice more conservative surgery. Neurosensory deficits might heal faster on the right side.

키워드

Cone-beam computed tomography; Randomized clinical trial
원문 및 링크아웃 정보
   
등재저널 정보