Dentoskeletal treatment changes in Class II subdivision malocclusions in submentovertex and posteroanterior radiographs

Janson, Guilherme; Cruz, Karina Santana; Woodside, Donald G.; Metaxas, A.; Freitas, Marcos Roberto de; Henriques, José Fernando Castanha

doi:10.1016/j.ajodo.2003.08.031

Cited by 29 publications

(30 citation statements)

References 29 publications

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“…Janson et al 33 suggested three premolar asymmetric extraction treatments in Class II subdivision patients. This treatment protocol can yield to shorter treatment time than four premolar extractions and tends to correct midline deviations due to asymmetric molar relationship with minimum incisor retraction more successfully.…”

Section: Discussionmentioning

confidence: 99%

Mandibular Asymmetry in Class II Subdivision Malocclusion

Kurt

Uysal

Şişman

et al. 2008

The Angle Orthodontist

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Objective: To evaluate the condylar and ramal mandibular asymmetry in a group of patients with Class II subdivision malocclusion to identify possible gender differences between male and female subjects. Materials and Methods: Mandibular asymmetry measurements (condylar, ramal, and condylarplus-ramal asymmetry values) were performed on the panoramic radiographs of 80 subjects (34 male and 46 female). The study group consisted of 40 Class II subdivision patients (18 male and 22 female; mean age 14.53 Ϯ 3.14 years). The control group consisted of 40 subjects with normal occlusion (16 male and 24 female; mean age 14.43 Ϯ 3.05 years). The Kruskal-Wallis test was used to determine the possible statistically significant differences between the groups for condylar, ramal, and condylar-plus-ramal asymmetry index measurements. Identified differences between groups were further analyzed using the Mann-Whitney U-test at the 95% confidence interval (P Ͻ .05). Results: No gender-related difference was found for any of the asymmetry indices. Comparison of condylar, ramal, and condylar-plus-ramal asymmetry index values and gonial angle measurements for Class I and Class II sides in the Class II subdivision group and for right and left sides in the Class I group showed no statistically significant differences. However, the Class II subdivision group has longer values for condylar, ramal, and condylar-plus-ramal height measurements and only these differences were statistically significant (P Ͻ .001). Conclusions: Except for condylar ramal and condylar-plus-ramal height measurements, Class II subdivision patients have symmetrical condyles when compared to normal occlusion samples according to Habbet's mandibular asymmetry indices.

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Section: Discussionmentioning

confidence: 99%

Mandibular Asymmetry in Class II Subdivision Malocclusion

Kurt

Uysal

Şişman

et al. 2008

The Angle Orthodontist

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“…3 A question arises as to whether subdivision malocclusions caused by dentoalveolar or skeletal deviations or any compromise treatment plans lead to additional complications, such as tipping of the occlusal plane, dental instability, or temporomandibular disharmonies 3,5 . Alavi et al 5 & Janson et al 16,12 suggested that Class II subdivisions result mainly from asymmetry of the mandibular first molars. However, they did not determine whether this was due to dentoalveolar or skeletal asymmetry.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Asymmetries associated with Class II subdivision malocclusions and Normal occlusion.

Jabeen¹,

Manohar²,

Shivaprakash³

et al. 2014

IOSRJDMS

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“…On the other hand, extraction of two upper premolars and only one lower premolar (opposite to the midline deviation) results in asymmetrical molar relationship at the end of the treatment (Class I and Class II). [10][11][12][13]21,27 Thus, in these situations it would be easier to achieve midline correction and obtain better vertical control. Treatment considering three premolars extraction protocol in Class II subdivision cases requires less treatment time, providing more satisfactory results.…”

Section: Literature Review and Discussionmentioning

confidence: 99%

Asymmetric extractions in orthodontics

Melgaço

Araújo

2012

Dental Press J. Orthod.

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INTRODUCTION: Extraction decisions are extremely important in during treatment planning. In addition to the extraction decision orthodontists have to choose what tooth should be extracted for the best solution of the problem and the esthetic/functional benefit of the patient. OBJECTIVE: This article aims at reviewing the literature relating the advantages, disadvantages and clinical implications of asymmetric extractions to orthodontics. METHODS: Keywords were selected in English and Portuguese and the EndNote 9 program was used for data base search in PubMed, Web of Science (WSc) and LILACS. The selected articles were case reports, original articles and prospective or retrospective case-control studies concerning asymmetrical extractions of permanent teeth for the treatment of malocclusions. CONCLUSION: According to the literature reviewed asymmetric extractions can make some specific treatment mechanics easier. Cases finished with first permanent molars in Class II or III relationship in one or both sides seem not to cause esthetic or functional problems. However, diagnosis knowledge and mechanics control are essential for treatment success

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Dentoskeletal treatment changes in Class II subdivision malocclusions in submentovertex and posteroanterior radiographs

Cited by 29 publications

References 29 publications

Mandibular Asymmetry in Class II Subdivision Malocclusion

Mandibular Asymmetry in Class II Subdivision Malocclusion

Evaluation of Asymmetries associated with Class II subdivision malocclusions and Normal occlusion.

Asymmetric extractions in orthodontics

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