Evaluation of long-term hard tissue relapse following surgical–orthodontic treatment in skeletal class II patients: A systematic review and meta-analysis

Gaitan-Romero, L.; Shujaat, Sohaib; Ma, Hongyang; Orhan, Kaan; Shaheen, Eman; Mulier, D.; Willems, Guy; Politis, Constantinus; Jacobs, Reinhilde

doi:10.1016/j.ijom.2020.09.001

Cited by 17 publications

(23 citation statements)

References 43 publications

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“…All of the translational and rotational MAD results were within the clinically acceptable stability of 2 mm and 4°, respectively. 4 The largest translational discrepancies were seen in the superoinferior direction of the proximal (1.58 mm (1.84)) and distal (1.56 mm (0.86)) mandibular segments, and the anteroposterior direction of the central maxillary segment (1.52 mm (1.13)). The largest rotational discrepancies were seen in the flaring of the maxillary segments (3.37° (3.43)), in the pitch of the chin (2.68° (1.36)), and in the distal (2.06° (1.24)) and proximal (1.84° (1.83)) mandibular segments.…”

Section: Resultsmentioning

confidence: 92%

“…Colour-coded distance maps were computed by part comparison in order to present a quick overview of the stability results. 29 The colour range was set to 0-2 mm, which is considered clinically acceptable and stable in most studies 4 (Fig. 2).…”

Section: Assessment Of Stabilitymentioning

confidence: 99%

“…Skeletal stability following orthognathic surgery may be influenced by an insufficient and inaccurate surgical approach, deficient pre-and postoperative orthodontics, inefficient fixation of bone segments, extent of the surgical movement, surgical complications, condition of the temporomandibular joints, and masticatory muscle activity. 2,3 In a systematic review and metaanalysis on treatment relapse in skeletal class II patients, Gaitan-Romero et al 4 concluded that the outcomes of the meta-analysis were limited due to the heterogeneity of the data, small number of studies, and inconsistent methods of evaluation. Hence, further high-quality studies utilizing standardized 3D methodologies are required to improve the level of evidence.…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11][12] The error may exceed the clinically relevant 0.5 mm margin, 13,14 and even the clinically acceptable surgical accuracy and stability of 2 mm. 4,8 Consequently, image registration techniques have been introduced for the superimposition of two consecutive uni-or multimodal scans based on a reference structure using mutual image information, [13][14][15][16][17][18][19][20][21] i.e. voxel-based registration (VBR), [22][23][24] hence making the re-identification of landmarks superfluous.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Virtual surgical analysis: long-term cone beam computed tomography stability assessment of segmental bimaxillary surgery

Holte

Diaconu

Ingerslev

et al. 2022

International Journal of Oral and Maxillofacial Surgery

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Section: Resultsmentioning

confidence: 92%

Section: Assessment Of Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Virtual surgical analysis: long-term cone beam computed tomography stability assessment of segmental bimaxillary surgery

Holte

Diaconu

Ingerslev

et al. 2022

International Journal of Oral and Maxillofacial Surgery

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“…Dentoalveolar changes with noncompliance intermaxillary appliances are also widely documented [ 9 , 10 ]; the principal controversy concerning the mode of action of functional appliances is about their effect on mandibular growth. Finally, after the adolescent growth spurt, however, the therapeutic possibilities for severe skeletal discrepancies are limited to camouflage treatment by premolar extractions [ 11 ], molar distalization [ 12 ], or jaw repositioning by orthognathic surgery [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Does Early Treatment Improve Clinical Outcome of Class II Patients? A Retrospective Study

Männchen¹,

Serafin

Fastuca

et al. 2022

Children

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The present study was carried out to evaluate the benefits from one-phase Class II Early Treatment (ET) using extraoral forces and functional appliances but without intermaxillary forces and eventual lower leeway space preservation compared to two-phase Class II Late Treatment (LT) with the need for extractions and full fixed appliances as well as lower incisor proclination. The ET group (n = 239, 115 M, 124 F, mean age 10.6 ± 1.2 years), with first premolars not in contact and the second deciduous lower molars preserved, was compared to the LT group (n = 288, 137 M, 151 F, mean age 12.4 ± 1.5 years). The ET group was first treated with headgears, growth guide appliances, or Teuscher activators and, in borderline crowding cases, with lower space maintenance by a lingual arch, lip bumper, or fixed utility arch. The LT group and the second phase of ET were treated with full fixed appliances including intermaxillary forces such as Class II elastics or noncompliance devices; headgear and a growth guide appliance were also used. Cephalograms and plaster models were taken before (T1) and after treatment (T2) to calculate cephalometric changes and space balance discrepancies. The differences between T1 and T2 were analyzed by a t-test for normally distributed data and by the Mann–Whitney Test for nonnormally distributed data at a level of p < 0.05. The groups were defined as statistically homogeneous at T1. A statistical analysis showed that the ET group (mean treatment time 35.3 ± 13.3 months) was significantly associated with a 22.2% lower extraction rate, 15.9% less need for a full fixed appliance, and more than 5° less incisor proclination in the nonextraction cases compared to the LT group (mean treatment time 25.9 ± 8.1 months); treatment time significantly increased in the ET group compared to the LT group. Early Class II treatment resulted in a significant treatment effort reduction in more than one third of the patients and less lower incisor proclination, even if it clinically increased treatment time.

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Assessment of condylar positional changes in severe skeletal class II malocclusion after surgical-orthodontic treatment

Yang

Chen

et al. 2023

Clin Oral Invest

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This study aimed to determine the positional changes in the condyle in the temporomandibular joint (TMJ) of severe skeletal Class II malocclusion patients treated with surgical-orthodontics. Materials and MethodsThe measurements of TMJ space in 97 severe skeletal Class II malocclusion patients (20 males, 77 females, mean age, 24.8 years, mean ANB = 7.41°) were assessed using limited cone-beam computed tomography (LCBCT) images acquired before orthodontics (T0) and 12 months after surgery (T1). 3D remodelling of the TMJ and measurements of the anterior space (AS), superior space (SS), and posterior space (PS) were performed to determine the position of the condyle for each joint. All data were analysed by t test, correlation analysis and Pearson correlation coe cient. ResultsThe mean AS, SS, and PS values after the therapy changed from 1.684 mm to 1.680 mm (0.24%), 3.086 mm to 2.748 mm (10.968%), and 2.873 mm to 2.155 mm (24.985%), respectively. The decreases in SS and PS were statistically signi cant. Positive correlations were found in the mean AS, SS, and PS values between the right and left sides. ConclusionsThe combination of orthodontic and surgical treatment makes the condyle move counter-clockwise in the TMJ in severe skeletal Class II patients.

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Evaluation of long-term hard tissue relapse following surgical–orthodontic treatment in skeletal class II patients: A systematic review and meta-analysis

Cited by 17 publications

References 43 publications

Virtual surgical analysis: long-term cone beam computed tomography stability assessment of segmental bimaxillary surgery

Virtual surgical analysis: long-term cone beam computed tomography stability assessment of segmental bimaxillary surgery

Does Early Treatment Improve Clinical Outcome of Class II Patients? A Retrospective Study

Assessment of condylar positional changes in severe skeletal class II malocclusion after surgical-orthodontic treatment

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