A pilot clinical study of Class III surgical patients facilitated by improved accelerated osteogenic orthodontic treatments

Abstract

Objective: To evaluate if the improved accelerated osteogenic orthodontics (IAOO) procedure could speed Class III surgical patients' preoperative orthodontic treatment duration and, if yes, to what extent. This study was also designed to determine whether or not an IAOO procedure affects the tooth-moving pattern during extraction space closure. Materials and Methods: The samples in this study consisted of 24 Class III surgical patients. Twelve skeletal Class III surgery patients served as an experimental group (group 1) and the others as a control group (group 2). Before treatment, the maxillary first premolars were removed. For group 1, after the maxillary dental arch was aligned and leveled (T2), IAOO procedures were performed in the maxillary alveolar bone. Except for this IAOO procedure in group 1, all 24 patients experienced similar combined orthodontic and orthognathic treatment. Study casts of the maxillary dentitions were made before orthodontic treatment (T1) and after extraction space closure (T3). All of the casts were laser scanned, and the amount of movement of the maxillary central incisor, canine, and first molar, as well as arch widths, were digitally measured and analyzed by using the three-dimensional model superimposition method. Results: The time durations T3-T2 were significantly reduced in group 1 by 8.65 6 2.67 months and for T3-T1 were reduced by 6.39 6 2.00 months (P , .001). Meanwhile, the tooth movement rates were all higher in group 1 (P , .05). There were no significant differences in the amount of teeth movement in the sagittal, vertical, and transverse dimensions between the two groups (P . .05). Conclusion: The IAOO can reduce the surgical orthodontic treatment time for the skeletal Class III surgical patient by more than half a year on average. The IAOO procedures do not save anchorage. (Angle Orthod. 2015;85:616-624.)

Corticotomies as a surgical procedure to accelerate tooth movement during orthodontic treatment: A systematic review

“…The primary objectives of 5 of the trials were to study the speed of tooth movement (1,5,6,23,24). A further 5 measured the orthodontic treatment time (4,8,24-26). The secondary objectives were to examine the effect of corticotomies on periodontal tissues (3,5,6,8,24,26), postoperative pain (1,15,23,25), loss of posterior anchorage (4,6), inflammation markers (23), root length (3,26) and canine rotation and tipping (5) ( Table 2 and Table 2 continue ).…”

“…The studies by Wu et al (4) and Bhattacharya et al (8) only measured the length of time taken to close the extraction spaces. The treatment time was faster in the corticotomy group.…”

“…Loss of anchorage was only studied by Wu et al (4) and Aboul-Ela et al (6) in plaster models. Both concluded that the loss of anchorage did not depend on the corticotomy.…”

“…The mean duration of orthodontic treatment is between 16 and 18 months, but depends on many factors, such as the malocclusion itself, whether or not extractions are required, gender, age, cooperation from the patient and clinical experience (2,4). In cases involving maximum anchorage need owing to extraction of the maxillary premolars, the total treatment time rises to 18-24 months (5).…”

“…In cases involving maximum anchorage need owing to extraction of the maxillary premolars, the total treatment time rises to 18-24 months (5). When the orthodontic treatment is carried out in preparation for orthognathic surgery, the treatment time can increase to 3 years (4,6,7). …”