The Accuracy of Jaws Repositioning in Bimaxillary Orthognathic Surgery with Traditional Surgical Planning Compared to Digital Surgical Planning in Skeletal Class III Patients: A Retrospective Observational Study

Abstract

Background: Technological progress has led to the transition to digital methods to perform surgical planning and to obtain surgical splints with CAD/CAM technologies. The present study aimed to compare the accuracy of jaw repositioning in bimaxillary orthognathic surgery using traditional and digital surgical planning in skeletal class III patients. Methods: This study included 60 skeletal class III patients divided into two groups based on the method used to perform surgical planning: traditional (T, n = 30) and digital (D, n = 30). For each patient, a 2D presurgical Visual Treatment Objective (VTO) was prepared and the outcome of the surgery was compared with that planned by using determined cephalometric measurements (ANB, SNA, SNB, Ar-Go-Me, S-Ar-Go). Statistical analysis showed that the measurements planned and those obtained after surgery were equivalent in Group D. For Group T, the analysis showed equivalence only for one of the considered measurements (ANB). By comparing the results of the two groups, Group D presented a lower level of error than Group T. Conclusions: Digital surgical planning performed significantly better in terms of accuracy of jaw repositioning than the traditional protocol.

What is the accuracy of the surgical guide in the planning of orthognathic surgeries? A systematic review

“…11- The measurements planned and those obtained after surgery were equivalent in group D (digital planning) and in group T (traditional planning), the analysis showed equivalence only for one of the measurements considered: angle between point A: subspinale and nasion (line AN) and point B: supramentale and nasion (line BN) (ANB) ( 19 ).…”

“…According to Barone et al . ( 19 ), 60 skeletal class III patients were selected, where 11 males and 19 females were submitted to traditional planning and 12 males and 18 females to digital planning.…”

“…( 18 ) and Barone et al . ( 19 ) reported CBCT as the imaging examination of choice. The other authors did not report the kind of CT used in their studies.…”

Orthodontic, Maxillofacial Surgery, and Prosthodontic Rehabilitation Supported by Miniscrew in a Patient with Cleft Lip and Palate

“…Patients with cleft lip and/or palate often present severe maxillary retrusion, transversal contraction of the maxilla, and skeletal class III malocclusion [ 10 ], because of the maxillary underdevelopment due to the cleft. If the skeletal malocclusion cannot be adequately corrected only with orthodontic therapy, in adulthood the orthodontic-surgical treatment, with orthognathic surgery, represents the approach of choice [ 13 ].…”

“…Case Reports in Dentistry 3 Case Reports in Dentistry adulthood the orthodontic-surgical treatment, with orthognathic surgery, represents the approach of choice [13].…”