Changes in occlusal plane through orthognathic surgery

Esteves, Lucas Senhorinho; Ávila, Carolina; Medeiros, Paulo José de

doi:10.1590/s2176-94512012000400028

Cited by 8 publications

(3 citation statements)

References 9 publications

(36 reference statements)

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“…A consensus already exists in the literature which indicates that CCW rotation of the maxillary occlusal plane allowing for mandibular CCW rotation ensures the increase of chin projection and improvement of the soft tissue profile. 3,4,7,8 However, it is unlikely to assign the maximum and minimum thresholds that switch a positive balance to negative from the available evidence.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Occlusal Plane Inclination and Dental Decompensation on the Overall Result of Surgical Correction of Class II Malocclusion

Şeker¹,

Aktürk²,

Yerli

et al. 2022

Journal of Craniofacial Surgery

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Purpose: To evaluate the effects of upper occlusal plane (UOP) inclination and incisor decompensations on the outcome of surgical Class II patients. Materials and Methods: Pretreatment (T0), preoperative (T1), and posttreatment (T2) cephalograms of 30 surgical Class II patients were included. Cephalometric measurements were performed using the Dolphin Imaging Software in this retrospective study. The differences between time points were analyzed with repeated measures ANOVA. Spearman correlation test was used to determine any correlations between either the UOP alterations or incisor decompensations and the cephalometric variables. Results: A significant improvement was obtained in the sagittal skeletal, dental variables, and soft tissue B point. Significant correlations were found between the decompensation achievement ratio and the change of the convexity angle. The relative percentage ratio (RPR) of the lower incisor was correlated with Wits appraisal, ANB, and Convexity Angle at the T2 stage. The RPR of the upper incisor was found to be correlated with lip strain. The relative surgical correction ratio of the UOP angle was found to be correlated with the surgical change of Wits appraisal and convexity angle. The RPR of the UOP angle was correlated with the SNB, ANB, and SN-GOGN angles at the T2 stage. Conclusions: Significant improvement in the incisor inclinations was achieved, but the incisors were inadequately decompensated at the preoperative phase. Surgical correction was limited by the inadequate presurgical decompensation. The surgical alteration of the UOP should be taken into consideration for the surgical planning to obtain better outcomes for Class II patients.

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Section: Discussionmentioning

confidence: 99%

The Effects of Occlusal Plane Inclination and Dental Decompensation on the Overall Result of Surgical Correction of Class II Malocclusion

Şeker¹,

Aktürk²,

Yerli

et al. 2022

Journal of Craniofacial Surgery

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“…Alterations in the occlusal plane during the management of Class III problems often is a treatment objective. Such approaches include occlusal plane rotation during orthognathic surgery 15,16 as well as Class III camouflage treatment with the multiloop edgewise archwire technique. 17 In the current CM3 study, the occlusal plane rotated À4.08 in a counterclockwise direction during phase I.…”

Section: Was the Occlusal Plane Affected By Cm3 Treatment?mentioning

confidence: 99%

Evaluation of adolescent and adult patients treated with the Carriere Motion Class III appliance followed by fixed appliances

McNamara¹,

Franchi²,

McClatchey³

et al. 2021

The Angle Orthodontist

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Objectives To determine dentoalveolar and skeletal effects produced in mature patients by the Carriere Motion Class III (CM3) appliance followed by fixed appliances. Materials and Methods This retrospective study evaluated 32 patients at three time points: T1 (initial), T2 (removal of CM3), and T3 (posttreatment). Serial cephalograms were traced and digitized, and best-fit regional superimpositions were constructed. Eleven linear and 7 angular variables were measured. The starting forms of the CM3 patients were compared with a sample of untreated subjects with normal occlusions and well-balanced faces. Results The CM3 phase lasted 6.3 months, followed by a phase of fixed appliances lasting 12.9 months; the total duration of treatment was 19.2 months. Minimal skeletal changes were measured sagittally, with only a slight increase in lower anterior facial height observed during treatment. Most treatment changes were dentoalveolar in nature. Wits appraisal increased 4.0 mm during treatment. The molar relationship improved by 6.0 mm during phase I, a value that rebounded slightly during phase II, resulting in an improvement toward Class I of 4.8 mm. Best-fit regional superimpositions revealed anterior movement of upper molars relative to the maxilla and posterior movement of lower molars relative to the mandible. Conclusions The Carriere Motion Class III appliance is an effective and efficient method of resolving occlusal problems in minimally growing Class III patients. Primary treatment effects are dentoalveolar in nature with minimal skeletal alterations.

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“…Preoperative orthodontic goals play a major role in determining when premolar extraction will be required, when the curves of Spee, either marked or reverse, will be leveled orthodontically or surgically, when intra and inter-arches orthodontic procedures will be required to obtain appropriate dental positions, and how the maxillomandibular transverse relationship will be addressed. 19 The indication to segment the maxilla between laterals and canines should be established during the phase of orthodontic and surgical planning ( Table 1 ).…”

Section: Indications Of Maxillary Segmentation Between Laterals and Cmentioning

confidence: 99%

Why segment the maxilla between laterals and canines?

Esteves

Santos

Sullivan

et al. 2016

Dental Press J. Orthod.

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Introduction: Maxillary surgery on a bone segment enables movement in the sagittal and vertical planes. When performed on multiple segments, it further provides movement in the transverse plane. Typical sites for interdental osteotomies are between laterals and canines, premolars and canines, or between incisors. Additionally, osteotomies can be bilateral, unilateral or asymmetric. The ability to control intercanine width, buccolingual angulation of incisors, and correct Bolton discrepancy are some of the advantages of maxillary segmentation between laterals and canines. Objective: This article describes important features to be considered in making a clinical decision to segment the maxilla between laterals and canines when treating a dentoskeletal deformity. It further discusses the history of this surgical approach, the indications for its clinical use, the technique used to implement it, as well as its advantages, disadvantages, complications and stability. It is therefore hoped that this paper will contribute to disseminate information on this topic, which will inform the decision-making process of those professionals who wish to make use of this procedure in their clinical practice. Conclusions: Segmental maxillary osteotomy between laterals and canines is a versatile technique with several indications. Furthermore, it offers a host of advantages compared with single-piece osteotomy, or between canines and premolars.

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Changes in occlusal plane through orthognathic surgery

Cited by 8 publications

References 9 publications

The Effects of Occlusal Plane Inclination and Dental Decompensation on the Overall Result of Surgical Correction of Class II Malocclusion

The Effects of Occlusal Plane Inclination and Dental Decompensation on the Overall Result of Surgical Correction of Class II Malocclusion

Evaluation of adolescent and adult patients treated with the Carriere Motion Class III appliance followed by fixed appliances

Why segment the maxilla between laterals and canines?

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