J Korean Assoc Oral Maxillofac Surg.  2019 Aug;45(4):215-219. 10.5125/jkaoms.2019.45.4.215.

Comparison of postoperative paresthesia after sagittal split osteotomy among different fixation methods: a one year follow-up study

Affiliations
  • 1Oral and Maxillofacial Surgery Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran. farshidbastami@sbmu.ac.ir
  • 2Oral and Maxillofacial Surgery Department, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
  • 3Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Abstract


OBJECTIVES
Postoperative paresthesia is a common complication after sagittal split osteotomy (SSO). This study aimed to compare paresthesia among different fixation methods one year postoperative.
MATERIALS AND METHODS
This prospective cohort study assessed subjects in four groups: class II with miniplate fixation (Group 1), class II with three-screw fixation (Group 2), class III with miniplate fixation (Group 3), and class III with three-screw fixation (Group 4). Paresthesia was evaluated one year postoperative based on a 0-10 visual analogue scale. Pearson correlation was used to evaluate associations of age and mandibular movement with paresthesia. ANOVA was used to compare paresthesia among groups.
RESULTS
A total of 80 subjects were enrolled, with 20 subjects in each of the four groups. The Pearson correlation test demonstrated a significant correlation between mandibular movement and paresthesia (P=0.001). Comparison of paresthesia among the groups showed significant differences among groups 1 and 2, 2 and 3, and 3 and 4 (P<0.05).
CONCLUSION
The three-screw fixation method led to more paresthesia one year postoperative compared with miniplate fixation. In addition, the magnitude of mandibular movement had a positive correlation with paresthesia.

Keyword

Mandible; Paresthesia; Sagittal split osteotomy; Skeletal deformity; Inferior alveolar nerve

MeSH Terms

Cohort Studies
Follow-Up Studies*
Mandible
Mandibular Nerve
Methods*
Osteotomy*
Paresthesia*
Prospective Studies
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