Effects of the cervical headgear in growing Angle Class II malocclusion patients: a prospective study

Rosa, Anderson; Nascimento, Rizomar Ramos do; Mucha, José Nelson; Vilella, Oswaldo de Vasconcellos

doi:10.1590/2177-6709.25.2.025-031.oar

Cited by 5 publications

(4 citation statements)

References 30 publications

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“…In a previous prospective study, it was observed that cervical anchorage significantly reduced the maxillomandibular sagittal discrepancy. When the HG was used without the installation of the fixed appliance, the restriction of anterior maxilla displacement and forward displacement of the mandible contributed to this result, but without statistical significance 18 .…”

Section: Discussionmentioning

confidence: 91%

“…Another similarity was the non-significant increase in the vertical height of the face. The favorable growth of the condyle and of the alveolar region are the possible factors that inhibited changes in the mandibular plane inclination (GoGn.SN), compensating the maxillary molars' extrusion and inclination, as a consequence of the cervical mechanics 2,9,18,19 .…”

Section: Discussionmentioning

confidence: 99%

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Skeletal changes produced by cervical and parietal headgears: a cephalometric evaluation

Rosa

Vilella

2021

Rev. odontol. UNESP

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Introduction Extraoral strength is the most common strategy to correct Angle Class II malocclusion, restricting and redirecting the maxillary growth. Objective To evaluate the skeletal changes resulting from the use of headgear, with cervical and parietal anchorages, associated with a full fixed orthodontic appliance, in growing patients with Class II malocclusion (Angle) treated in the clinic of an orthodontic training center. Material and method The ages at the beginning and end of the treatment, anchorage type, and the values of some cephalometric variables were obtained from the clinical files. After applying the inclusion and exclusion criteria, 56 patient files were selected. Then, the sample was divided into two groups, according to the anchorage type: cervical (n=30) and parietal (n=26). The differences between the initial (T1) and final (T2) values of cephalometric measurements SNA, SNB, ANB, AO-BO, GoGn.SN and LHF (percentage of lower facial height to total facial height) were evaluated in both groups. Result Significant differences between T1 and T2 were found relative to SNB and ANB variables in both groups. The AO-BO variable presented a statistically significant difference only in the cervical group. The remaining variables did not show significant differences between T1 and T2. Conclusion The skeletal changes resulting from the use of cervical or parietal anchorage were very similar. There was a decrease in the sagittal discrepancy between the maxillary bones due to forward displacement of the mandible, without significant vertical changes.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Skeletal changes produced by cervical and parietal headgears: a cephalometric evaluation

Rosa

Vilella

2021

Rev. odontol. UNESP

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“…Class II malocclusion in growing patients. Classical articles, 19,20 more recent researches [21][22][23] and updated meta-analysis 24 have demonstrated positive skeletal effects with the use of extraoral forces applied to the maxillary bone. However, occlusal stability is not well addressed in the Class II treatment studies.…”

Section: Headgear Therapy Has Proved To Effectively Assist On Managingmentioning

confidence: 99%

Long term dental transversal stability of Class II division 1 treated with cervical headgear

Oliveira

Santos

Lima

et al. 2022

Dental Press J. Orthod.

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Introduction: In several conditions, outcome stability is a great challenge for Orthodontics. Previous studies have reported that relapse commonly occurs along the years after orthodontic treatment finishing. Objective: The aim of the present study was to evaluate in the long-term transversal dental arch changes of Class II division 1 patients treated with cervical headgear and fixed appliance. Methods: Plaster study casts of 20 patients treated with cervical headgear without dental extractions were 3D-scanned and evaluated in three distinct times: initial (T1), immediate post-treatment (T2) and long-term retention (T3 - minimum 20 years). Transversal teeth distance of maxillary and mandibular canines, premolars and first molars were measured. Results: A statistically significant increase during treatment was observed for all maxillary teeth transversal distances (p< 0.05). In turn, a significant reduction was observed in the long term (p<0.05). For the mandibular teeth, canine transversal distance presented statistically significant constriction in the retention period (p<0.05). Mandibular first molars distance was significantly expanded by treatment (p<0.05) and remained stable in the long term. The changes observed for the other teeth or other times were considered not statistically relevant. Conclusions: For the accessed sample, transversal changes occurred during treatment and retention phases in Class II division 1 patients treated with cervical headgear and fixed appliance. Relapse was considered statistically relevant, even with the institution of a retention protocol.

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“…A atividade de sucção não nutritiva deve ser diagnosticada precocemente para diminuir as probabilidades de desenvolvimento de mordida cruzada posterior, mordida aberta anterior e relação molar de Classe II (MACHADO et al, 2018). A classificação das máoclusões acontece por meio do Índice de Foster e Hamilton, que consiste em quatro medidas: chave canina, sobressaliência, sobremordida e mordida cruzada posterior, sendo essa medição realizada com os dentes em oclusão e a sonda paralela ao plano oclusal (BAUMAN et al, 2018;ROSA et al, 2020).…”

Section: Impactos Na Maloclusão Dentáriaunclassified

Bruxismo Durante O Sono

Nunes¹,

Barros²,

Almeida³

et al. 2022

Contribuições Científicas Em Odontologia: Pesquisas, Práticas E Novos Paradigmas

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Effects of the cervical headgear in growing Angle Class II malocclusion patients: a prospective study

Cited by 5 publications

References 30 publications

Skeletal changes produced by cervical and parietal headgears: a cephalometric evaluation

Skeletal changes produced by cervical and parietal headgears: a cephalometric evaluation

Long term dental transversal stability of Class II division 1 treated with cervical headgear

Bruxismo Durante O Sono

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