TY - JOUR
T1 - Modeling the effect of bilateral sagittal split osteotomy on posterior, superior and medial space dimensions of the temporomandibular joint
T2 - a retrospective controlled cohort study
AU - Hupp, Linus Christian
AU - Verius, Michael
AU - Bertram, Annika
AU - Kolk, Andreas
AU - Emshoff, Rüdiger
N1 - Publisher Copyright:
© 2023, The Author(s).
PY - 2023/12
Y1 - 2023/12
N2 - Background: To model the effect of isolated bilateral sagittal split osteotomy (BSSO) on changes in posterior (PSD), superior (SSD), and medial space dimensions (MSD) of the temporomandibular joint. Methods: Using a retrospective cohort study design, pre- and postoperative (immediately after surgery; 1 year follow-up) cone-beam computed tomography measurements of 36 patients who had undergone BSSO for mandibular advancement were compared with a control group of 25 subjects from whom a mandibular odontogenic cyst was removed under general anesthesia. Generalized estimation equation (GEE) models were used to examine the independent effects of study group, preoperative condylar position, and time points on PSD, SSD, and MSD adjusting for covariates (age, sex, and mandibular advancement). Results: No significant differences were found regarding changes in PSD (p = 0.144), SSD (p = 0.607), or MSD (p = 0.565) between the BSSO and control groups. However, the preoperative posterior condylar position showed significant effects on PSD (p < 0.001) and MSD (p = 0.043), while the preoperative central condylar position demonstrated a significant effect on PSD (p < 0.001). Conclusion: The data suggest that preoperative posterior condylar position is a significant effect modifier of PSD and MSD over time in this cohort.
AB - Background: To model the effect of isolated bilateral sagittal split osteotomy (BSSO) on changes in posterior (PSD), superior (SSD), and medial space dimensions (MSD) of the temporomandibular joint. Methods: Using a retrospective cohort study design, pre- and postoperative (immediately after surgery; 1 year follow-up) cone-beam computed tomography measurements of 36 patients who had undergone BSSO for mandibular advancement were compared with a control group of 25 subjects from whom a mandibular odontogenic cyst was removed under general anesthesia. Generalized estimation equation (GEE) models were used to examine the independent effects of study group, preoperative condylar position, and time points on PSD, SSD, and MSD adjusting for covariates (age, sex, and mandibular advancement). Results: No significant differences were found regarding changes in PSD (p = 0.144), SSD (p = 0.607), or MSD (p = 0.565) between the BSSO and control groups. However, the preoperative posterior condylar position showed significant effects on PSD (p < 0.001) and MSD (p = 0.043), while the preoperative central condylar position demonstrated a significant effect on PSD (p < 0.001). Conclusion: The data suggest that preoperative posterior condylar position is a significant effect modifier of PSD and MSD over time in this cohort.
KW - Bilateral sagittal split ramus osteotomy
KW - Condylar displacement
KW - Cone-beam computed tomography
KW - Orthognathic surgery
KW - Temporomandibular joint
UR - http://www.scopus.com/inward/record.url?scp=85159676759&partnerID=8YFLogxK
U2 - 10.1186/s12903-023-02959-3
DO - 10.1186/s12903-023-02959-3
M3 - Article
C2 - 37198590
AN - SCOPUS:85159676759
SN - 1472-6831
VL - 23
JO - BMC Oral Health
JF - BMC Oral Health
IS - 1
M1 - 302
ER -