TY - JOUR
T1 - Evaluation of skeletal stability after surgical-orthodontic correction of skeletal open bite with mandibular counterclockwise rotation using modified inverted L osteotomy
AU - Aymach, Zaher
AU - Nei, Hitoshi
AU - Kawamura, Hiroshi
AU - Van Sickels, Joseph
PY - 2011/3
Y1 - 2011/3
N2 - Purpose: To evaluate the surgical-orthodontic stability of treating skeletal open bite patients with mandibular ramus osteotomies using a modified inverted L osteotomy (M-ILO) and counterclockwise rotation of the mandible stabilized with rigid fixation. Patients and Methods: In a retrospective review, 12 patients with skeletal open bites (8 females, 4 males) who received mandibular M-ILO in the period 2004-2007 at Tohoku University Hospital were studied. Lateral cephalograms were taken immediately before surgery (T1), immediately after surgery (T2), and at 1 yr after surgery (T3). Cephalometric analysis for point B, pogonion, menton, and mandibular plane angle was obtained at the designated time intervals. Results: Mandibular counterclockwise rotation showed stability for point B, pogonion, and menton referred to X-Y coordinate, and for mandibular plane angle. The mean value for each variable was compared between T2 and T3. No statistically significant change was observed for all variables. Conclusions: With a well-positioned maxilla, skeletal open bite can be successfully treated using M-ILO. Mandibular counterclockwise rotation showed stability at 1 yr after surgery.
AB - Purpose: To evaluate the surgical-orthodontic stability of treating skeletal open bite patients with mandibular ramus osteotomies using a modified inverted L osteotomy (M-ILO) and counterclockwise rotation of the mandible stabilized with rigid fixation. Patients and Methods: In a retrospective review, 12 patients with skeletal open bites (8 females, 4 males) who received mandibular M-ILO in the period 2004-2007 at Tohoku University Hospital were studied. Lateral cephalograms were taken immediately before surgery (T1), immediately after surgery (T2), and at 1 yr after surgery (T3). Cephalometric analysis for point B, pogonion, menton, and mandibular plane angle was obtained at the designated time intervals. Results: Mandibular counterclockwise rotation showed stability for point B, pogonion, and menton referred to X-Y coordinate, and for mandibular plane angle. The mean value for each variable was compared between T2 and T3. No statistically significant change was observed for all variables. Conclusions: With a well-positioned maxilla, skeletal open bite can be successfully treated using M-ILO. Mandibular counterclockwise rotation showed stability at 1 yr after surgery.
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U2 - 10.1016/j.joms.2010.05.020
DO - 10.1016/j.joms.2010.05.020
M3 - Article
C2 - 21074308
AN - SCOPUS:79952252606
SN - 0278-2391
VL - 69
SP - 853
EP - 860
JO - Journal of Oral and Maxillofacial Surgery
JF - Journal of Oral and Maxillofacial Surgery
IS - 3
ER -