Long-Term Study of Relapse After Mandibular Orthognathic Surgery: Advancement Versus Setback
- PDF / 927,458 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 23 Downloads / 227 Views
ORIGINAL ARTICLE
Long-Term Study of Relapse After Mandibular Orthognathic Surgery: Advancement Versus Setback N. K. Sahoo1
•
Shiv Shankar Agarwal2 • Sanjeev Datana2 • S. K. Bhandari1
Received: 9 July 2020 / Accepted: 25 August 2020 Ó The Association of Oral and Maxillofacial Surgeons of India 2020
Abstract Background Relapse is a continuing process and should be evaluated on a long rather than short term. Materials and Methods Treatment records of 46 patients who underwent mandibular orthognathic surgery were divided into two groups, i.e. Group 1: Mandibular Advancement (MA) surgery (n = 26) and Group 2: Mandibular Setback (MS) surgery (n = 20). Lateral cephalograms were traced at T0 (01 week before surgery), T1 (01 week after surgery), T2 (01 year after surgery) and T3 (minimum 05 years after surgery) to study short- and long-term skeletal and dental relapse in horizontal, vertical and angular parameters selected for the study. Relapse was correlated with gender, age, amount of surgical movement and intra-operative change in mandibular plane angle to study effect of these factors on relapse. Results All horizontal, vertical and angular parameters studied showed significant relapse at short term (from T1 to T2) which continued significantly till long-term evaluation (T2 to T3) in both groups (P value \ 0.001). Horizontal relapse in all parameters, vertical relapse in all parameters & N. K. Sahoo [email protected] Shiv Shankar Agarwal [email protected] Sanjeev Datana [email protected] S. K. Bhandari [email protected] 1
Department of Oral and Maxillofcial Surgery, Armed Forces Medical College, Pune 411040, India
2
Department of Orthodontics and Dentofacial Orthopedics, Armed Forces Medical College, Pune, India
(except Pog and overbite at T1–T2) and angular relapse in all parameters (except Ramus inclination at T1–T2) was significantly higher in Group 2 compared to Group 1 (P value \ 0.001 for all). Relapse showed significant and positive correlation with amount of surgical movement and intra-operative change in mandibular plane angle in both groups (P value \ 0.05 for all). Conclusion Both MA and MS surgeries show significant relapse on both short- and long-term evaluation which it is higher in MS as compared to MA surgeries. Keywords Long-term relapse Mandibular orthognathic surgery Advancement surgery Setback surgery
Introduction Orthognathic surgery is a commonly employed procedure for correction of severe dentofacial deformities which otherwise cannot be managed by orthodontics alone or in combination with growth modulation [1, 2]. Though the efficacy of orthognathic surgery is time tested in terms of improving facial aesthetics and oral functions, the issue of possible post-treatment relapse has always bothered the researchers and clinicians [3, 4]. Mandibular single jaw surgery (advancement or setback) with Bilateral Sagittal Split Ramus Osteotomy (BSSRO) is a relatively common procedure for management of skeletal deformity with mandibular component. The success of these p
Data Loading...
