Three-dimensional evaluation of skeletal and dental changes in patients with skeletal class III malocclusion and facial asymmetry after surgical-orthodontic treatment

Ye, Ming; Hu, Yun; Wang, Tao; Zhang, Jiangtao; Li, Yuyue; Xu, Wenjie; Tan, Hao; Ye, Huayu; Zheng, Leilei

doi:10.3233/xst-190628

Cited by 5 publications

(7 citation statements)

References 26 publications

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“…Supplementary Table 3 summarizes the NOS results. Most of the studies were assessed as moderate quality, 12 - 48 while a few were assessed as high quality. 14 , 49 - 62 The studies were classified as high quality when the comparability of cohorts was appropriately addressed based on the study design or analysis.…”

Section: Resultsmentioning

confidence: 99%

Treatment outcome and long-term stability of orthognathic surgery for facial asymmetry: A systematic review and meta-analysis

Kim,

Jha

et al. 2024

Korean J Orthod

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Objective This systematic review aimed to provide a comparative analysis of the treatment outcomes, including hard and soft tissues, postoperative stability, temporomandibular disorders (TMD), and quality of life (QoL), in patients with facial asymmetry who underwent orthognathic surgery. Methods The primary objective was to address the question, “How do different factors related to surgery affect the outcomes and stability of orthognathic surgery in the correction of facial asymmetry?” A meta-analysis was conducted on the outcome parameters, such as skeletal, dental, and soft tissue symmetry, TMD, QoL, and relapse, using the Hartung–Knapp–Sidik–Jonkman method for random-effects models. Subgroup analyses were conducted considering surgery-related factors such as surgical techniques (one-jaw vs. two-jaw), use of the surgery-first approach, utilization of computer simulation, and analytical methods employed to evaluate asymmetry (2D vs. 3D). Results Forty-nine articles met the inclusion criteria. The meta-analysis demonstrated a significant improvement in the symmetry of hard and soft tissues. The subgroup analysis indicated that the treatment outcomes showed significant improvement, regardless of the factors related to surgery. Changes in TMD signs and symptoms varied according to the surgical technique used. Quality of life improved in the facial, oral, and social domains. Skeletal relapse was observed during the follow-up. Conclusions Our findings support the positive outcomes of orthognathic surgery in the treatment of facial asymmetry in terms of skeletal and soft tissue improvements, stability, relief of TMD symptoms, and enhancement of QoL. However, most of the included studies showed a low certainty of evidence and high heterogeneity.

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Section: Resultsmentioning

confidence: 99%

Treatment outcome and long-term stability of orthognathic surgery for facial asymmetry: A systematic review and meta-analysis

Kim,

Jha

et al. 2024

Korean J Orthod

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“…Ming et al [ 30 ] reported that they did not find a significant difference between the angulations of the lower and upper first molars before treatment, before orthognathic surgery, and after treatment in patients with skeletal class 3 and facial asymmetry. Similarly, in our study, while there was no significant change in the angulations of the lower and upper first molars in skeletal class 3, between the before and after treatment, mostly significant angulation changes were found in skeletal classes 1 and 2.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the Mesiodistal Angulations of Canine and Molar Teeth in Different Types of Orthodontic Malocclusions: A Retrospective Study

2023

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(i) Objective: Changes in the mesiodistal axial angulations of teeth with orthodontic treatment have been a topic of interest in orthodontics for many years, although it has not been clarified enough yet. Therefore, this present study aimed to compare mesiodistal axial angulations of canine and first molar teeth by measuring from pre- and post-treatment panoramic radiographs in different types of orthodontic malocclusions. (ii) Materials and Methods: In the study, the mesiodistal axial angulation angles of the lower–upper canines (teeth numbered 13, 23, 33, and 43) and first molars (teeth numbered 16, 26, 36, and 46) were compared on panoramic radiographs taken pre- (T0) and post- (T1) orthodontic treatment of 353 patients: 237 female (mean age 14.74 ± 2.96) and 116 male (mean age 14.44 ± 2.50), who had not received any prior orthodontic treatment. The groups were formed according to pre-/post-treatment, gender, angle classification, skeletal classification, bilaterally first premolar extraction/non-extraction, and the use/non-use of miniscrews in the extraction cases. The mesiodistal angulations between the long axes of both the lower and upper canines and first molars and the interorbital plane were measured separately and recorded. The reliability analysis between the repeated measurements was evaluated using the intraclass correlation coefficient (ICC). For statistical analysis, a paired sample t-test and Wilcoxon test were used for the normally and non-normally distributed data, respectively. For the between-groups comparison, independent sample t-test and one-way ANOVA were used for normally distributed data, while the Mann–Whitney U and Kruskal–Wallis tests were used for non-normally distributed data. A value of p < 0.05 was considered statistically significant. (iii) Results: ICCs showed excellent reliability, ranging from 0.804 to 0.913 in other teeth, yet were good in tooth 43 (ICC = 0.712). Regardless of the groups, statistically significant differences were found between the T0 and T1 angulations for all teeth, except teeth 13 and 16. In all groups, the increase in the angulations of teeth 33 and 43 and the decrease in the angulations of teeth 36 and 46 (except skeletal class 3) were found to be statistically significant. The T0 and T1 angulation changes in the miniscrews in the used and non-used groups in extraction cases were similar to the differences found in all teeth, regardless of the groups. There was no significant difference between gender, skeletal classes, and angle classes in the amounts of change in the mesiodistal angulations. (iv) Conclusion: It was concluded that orthodontic treatment caused significant changes in the mesiodistal axial angulation of the canine and the first molar teeth. Furthermore, the fact that the angulations tended to increase in the lower canine teeth and decrease in the lower first molar teeth revealed the importance of tooth movement control, especially in orthodontic mechanics in the mandibula.

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“…Compared with two-dimensional latero-lateral tele radiography, 3D cephalometric cone beam CT has advantages such as more precise measurement point positioning and clearer relationship analysis between bones and surrounding tissues. Therefore, the latter method is often used to evaluate the effects of oral and maxillofacial treatments such as orthodontic treatment 32,33 . By describing the changes in the palate after TSDO in all dimensions in detail, we suggest anticipation of the changes in the palate after surgery, which should be an important part of the preoperative evaluation.…”

Section: Discussionmentioning

confidence: 99%

“…The Journal of Craniofacial Surgery Volume 33, Number 2, March/April 2022 Influence of Bone-Borne Trans-Sutural orthodontic treatment. 32,33 By describing the changes in the palate after TSDO in all dimensions in detail, we suggest anticipation of the changes in the palate after surgery, which should be an important part of the preoperative evaluation. However, this study has some limitations.…”

Section: Discussionmentioning

confidence: 99%

Influence of Bone-Borne Trans-Sutural Distraction Osteogenesis Therapy on the Hard Palate of Growing Children With Cleft Lip and Palate

Zhang

Chen

et al. 2021

Journal of Craniofacial Surgery

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The efficacy of trans-sutural distraction osteogenesis therapy (TSDO) in treating midfacial hypoplasia in children with cleft lip and palate has been confirmed. However, few studies have reported that changes occur in the palate after TSDO treatment. To study the effect of TSDO on palatal morphology and its relative position in the craniofacial region, we retrospectively collected and measured the computed tomography images of 29 growing children with cleft lip and palate and midfacial hypoplasia, before and after TSDO. The results showed that the length and height of the palate did not change significantly, but the width and arch length increased, and the anterior area was more pronounced than the posterior area, with the median palatine suture still centered without obvious deviation. This suggests lateral palate growth after distraction, most likely around the median palatine suture. The distance from the palate to the cranial base also increased after distraction, and the anterior nasal spine moved forward, whereas the palate rotated by an average of 10.04° downward from the center of the anterior nasal spine. The increasing distance between the palate and cranial base may result from the growth of the nasal bone or the skull base. The oropharyngeal airway volume was also increased by an average of 2256.36 mm3, which may be beneficial to children's ventilatory function. In conclusion, TSDO therapy has influence on patients’ palatal morphology and position, which should be considered before surgery.

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Three-dimensional evaluation of skeletal and dental changes in patients with skeletal class III malocclusion and facial asymmetry after surgical-orthodontic treatment

Cited by 5 publications

References 26 publications

Treatment outcome and long-term stability of orthognathic surgery for facial asymmetry: A systematic review and meta-analysis

Treatment outcome and long-term stability of orthognathic surgery for facial asymmetry: A systematic review and meta-analysis

Comparison of the Mesiodistal Angulations of Canine and Molar Teeth in Different Types of Orthodontic Malocclusions: A Retrospective Study

Influence of Bone-Borne Trans-Sutural Distraction Osteogenesis Therapy on the Hard Palate of Growing Children With Cleft Lip and Palate

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