Postsurgical Stability of Counterclockwise Maxillomandibular Advancement Surgery: Affect of Articular Disc Repositioning

Gonçalves, João Roberto; Cassano, Daniel Serra; Wolford, Larry M.; Santos-Pinto, Ary dos; Marquez, Iris Malagoni

doi:10.1016/j.joms.2007.11.007

Cited by 107 publications

(56 citation statements)

References 36 publications

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“…You can change the facial pattern of patients and obtain functional and esthetic satisfactory results in patients with Class I occlusion, as shown in cases 1 and 2 of this article. 12 This fact changes the extraction standards established in orthodontic preparation for ortho-surgical conventional treatment demonstrated in clinical cases described in this article. Since there is usually no need to obtain expressive overjets, premolar extraction is limited to cases with severe crowding and exacerbated incisor inclinations, thus decreasing the total time of pre-surgical orthodontics and possible side effects in the periodontium -for example, root resorption.…”

mentioning

confidence: 82%

Changes in occlusal plane through orthognathic surgery

Esteves¹,

Ávila²,

Medeiros

2012

Dental Press J. Orthod.

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Changes in occlusal plane through orthognathic surgery special articleIntroduction: A conventional ortho-surgical treatment, although with good clinical results, does not often achieve the desired functional outcomes. Patients with dentofacial deformities, especially those with increased occlusal planes (OP), are also affected by muscle, joint and breathing functional disorders, as well as facial esthetic involvement. The surgical manipulation of the OP in orthognathic surgery is an alternative to overcome the limitations of conventional treatment. Objective:To report the importance of assessing the occlusal plane during diagnosis, planning and ortho-surgical treatment of patients with facial skeletal deformities and its main advantages. Conclusion:Although both philosophies of ortho-surgical treatment (conventional and by surgical manipulation of the OP) have presented good results, the selective correction of the OP allows a full treatment of these patients, providing better esthetic and functional results. Alteração do plano oclusal na cirurgia ortognática tópico especialIntrodução: o tratamento ortocirúrgico convencional, embora apresente bons resultados clínicos, muitas vezes não alcança resultados funcionais desejáveis. Os pacientes com deformidades dentofaciais, principalmente os que possuem plano oclusal (PO) aumentado, são acometidos também por distúrbios funcionais musculares, articulares e respiratórios, além do comprometimento estético facial. A manipulação cirúrgica do PO na cirurgia ortognática é uma alternativa para suprir as limitações do tratamento convencional.Objetivo: relatar a importância da avaliação do plano oclusal nas fases de diagnóstico, planejamento e tratamento ortocirúrgico de pacientes com deformidades esqueléticas faciais, e suas principais vantagens.Conclusão: apesar de ambas as filosofias de tratamento ortocirúrgico (convencional e pela manipulação cirúrgica do PO) apresentarem bons resultados, a correção seletiva do PO permite um tratamento integral desses pacientes, propiciando melhores resultados estéticos e funcionais. » Os autores declaram não ter interesses associativos, comerciais, de propriedade ou financeiros que representem conflito de interesse nos produtos e companhias descritos nesse artigo. Palavras» Os pacientes que aparecem no presente artigo autorizaram previamente a publicação de suas fotografias faciais e intrabucais. Endereço para correspondência:

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mentioning

confidence: 82%

Changes in occlusal plane through orthognathic surgery

Esteves¹,

Ávila²,

Medeiros

2012

Dental Press J. Orthod.

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“…methotrexate, biological agents such as antitumour necrosis factor a 6,7 or surgical interventions). 8,9 The Research Diagnostic Criteria for Temporomandibular Disorder validation project [10][11][12] concluded that clinical criteria alone, without the use of imaging, are inadequate for valid diagnosis of TMJ arthritis. The application of cone beam CT (CBCT) to craniofacial imaging provides a clear visualization of the hard tissues of TMJ and markedly reduces radiation and cost compared with medical CT. [13][14][15][16][17][18][19][20][21][22][23] The Osteoarthritis Initiative, a National Institutes of Health-sponsored consortium, focused on identifying imaging biomarkers of development and progression of knee OA using MRI.…”

Section: Introductionmentioning

confidence: 99%

Regional 3D superimposition to assess temporomandibular joint condylar morphology

Schilling¹,

Gomes²,

Benavides³

et al. 2014

Dentomaxillofacial Radiology

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Objectives: To investigate the reliability of regional three-dimensional registration and superimposition methods for assessment of temporomandibular joint condylar morphology across subjects and longitudinally. Methods: The sample consisted of cone beam CT scans of 36 patients. The across-subject comparisons included 12 controls, mean age 41.3 ± 12.0 years, and 12 patients with temporomandibular joint osteoarthritis, mean age 41.3 ± 14.7 years. The individual longitudinal assessments included 12 patients with temporomandibular joint osteoarthritis, mean age 37.8 ± 16.7 years, followed up at pre-operative jaw surgery, immediately after and one-year post-operative. Surface models of all condyles were constructed from the cone beam CT scans. Two previously calibrated observers independently performed all registration methods. A landmark-based approach was used for the registration of across-subject condylar models, and temporomandibular joint osteoarthritis vs control group differences were computed with shape analysis. A voxel-based approach was used for registration of longitudinal scans calculated x, y, z degrees of freedom for translation and rotation. Two-way random intraclass correlation coefficients tested the interobserver reliability. Results: Statistically significant differences between the control group and the osteoarthritis group were consistently located on the lateral and medial poles for both observers. The interobserver differences were #0.2 mm. For individual longitudinal comparisons, the mean interobserver differences were #0.6 mm in translation errors and 1.2°in rotation errors, with excellent reliability (intraclass correlation coefficient .0.75). Conclusions: Condylar registration for across-subjects and longitudinal assessments is reliable and can be used to quantify subtle bony differences in the three-dimensional condylar morphology.

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“…[6][7][8] This implies that patients with presurgical TMJ symptoms requiring mandibular advancement appear to have an increased risk of condylar resorption. 9 In addition, orthognathic surgery requires sur gical invasion, which carries risks and can result in significant postoperative discomfort. 10 However, no significant alternative treatment for these patients has yet been reported.…”

Section: Introductionmentioning

confidence: 99%

Management of acquired open bite associated with temporomandibular joint osteoarthritis using miniscrew anchorage

et al. 2012

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This article reports the orthodontic treatment of a patient with skeletal mandibular retrusion and an anterior open bite due to temporomandibular joint osteoarthritis (TMJ-OA) using miniscrew anchorage. A 46-year-old woman had a Class II malocclusion with a retropositioned mandible. Her overjet and overbite were 7.0 mm and -1.6 mm, respectively. She had limited mouth opening, TMJ sounds, and pain. Condylar resorption was observed in both TMJs. Her TMJ pain was reduced by splint therapy, and then orthodontic treatment was initiated. Titanium miniscrews were placed at the posterior maxilla to intrude the molars. After 2 years and 7 months of orthodontic treatment, an acceptable occlusion was achieved without any recurrence of TMJ symptoms. The retropositioned mandible was considerably improved, and the lips showed less tension upon lip closure. The maxillary molars were intruded by 1.5 mm, and the mandible was subsequently rotated counterclockwise. Magnetic resonance imaging of both condyles after treatment showed avascular necrosis-like structures. During a 2-year retention period, an acceptable occlusion was maintained without recurrence of the open bite. In conclusion, correction of open bite and clockwiserotated mandible through molar intrusion using titanium miniscrews is effective for the management of TMJ-OA with jaw deformity.

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Postsurgical Stability of Counterclockwise Maxillomandibular Advancement Surgery: Affect of Articular Disc Repositioning

Cited by 107 publications

References 36 publications

Changes in occlusal plane through orthognathic surgery

Changes in occlusal plane through orthognathic surgery

Regional 3D superimposition to assess temporomandibular joint condylar morphology

Management of acquired open bite associated with temporomandibular joint osteoarthritis using miniscrew anchorage

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