Hartlev J, Godtfredsen E, Andersen NT, Jensen T. Comparative Study of Skeletal Stability between Postoperative Skeletal Intermaxillary Fixation and No Skeletal Fixation after Bilateral Sagittal Split Ramus Osteotomy: an 18 Months Retrospective Study.
EJOURNAL OF ORAL MAXILLOFACIAL RESEARCH 2014;
5:e2. [PMID:
24800052 PMCID:
PMC4007368 DOI:
10.5037/jomr.2014.5102]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 03/27/2014] [Indexed: 11/16/2022]
Abstract
Objectives
The purpose of the present study was to evaluate
skeletal stability after mandibular advancement with bilateral sagittal
split osteotomy.
Material and Methods
Twenty-six patients
underwent single-jaw bilateral sagittal split osteotomy (BSSO) to correct
skeletal Class II malocclusion. One group (n = 13) were treated postoperatively
with skeletal elastic intermaxillary fixation (IMF) while the other group (n =
13) where threated without skeletal elastic IMF.
Results
The mean
advancement at B-point and Pog in the skeletal elastic IMF group was 6.44 mm and
7.22 mm, respectively. Relapse at follow-up at B-point was -0.74 mm and -0.29 mm
at Pog. The mean advancement at B-point and Pog in the no skeletal elastic IMF
group was 6.30 mm and 6.45 mm, respectively. Relapse at follow-up at B-point was
-0.97 mm and -0.86 mm at Pog. There was no statistical significant (P > 0.05)
difference between the skeletal IMF group and the no skeletal group regarding
advancement nor relapse at B-point or Pog.
Conclusions
Bilateral
sagittal split osteotomy is characterized as a stable treatment to correct Class
II malocclusion. This study demonstrated no difference of relapse between the
skeletal intermaxillary fixation group and the no skeletal intermaxillary
fixation group. Because of selection-bias and the reduced number of patients it
still remains inconclusive whether to recommend skeletal intermaxillary fixation
or not in the prevention of relapse after mandibular advancement.
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