A prospective study of the treatment effects of a removable appliance with palatal crib combined with high-pull chincup therapy in anterior open-bite patients

Pedrin, Fernando; Almeida, Márcio Rodrigues de; Almeida, Renato Rodrigues de; Almeida–Pedrin, Renata Rodrigues de; Torres, Fernando César

doi:10.1016/j.ajodo.2005.04.035

Cited by 48 publications

(85 citation statements)

References 10 publications

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“…These findings were similar to those described in a previous short-term study that reported a significantly greater downward rotation (1.2 ) of the palatal plane associated with a significant reduction in the intermaxillary divergence (À1.7 ) in the Q-H/C sample with respect to the controls at the end of the active treatment. 17 On the other hand, our short-term treatment outcomes disagreed with those of Pedrin et al 23 and Torres et al 24 The results of both studies showed that the effects of therapy primarily were dentoalveolar without significant changes in the skeletal maxillary and mandibular components. The initial mean amount of negative overbite (a measure of anterior dentoalveolar open bite) was À3.3 mm in the Q-H/C group.…”

Section: Discussioncontrasting

confidence: 89%

“…This result agrees with the outcome at the end of active therapy with the same treatment protocol reported in a previous short-term study. 17 Similarly, in the short-term results of Pedrin et al, 23 the treated group showed a significant closure of the anterior open bite of 5.0 mm, whereas Torres et al 24 found an improvement in overbite of 3.9 mm. In our study, a statistically significant lingual tipping (À3.7 ) of the mandibular incisors to the mandibular plane contributed to the correction of overbite in the Q-H/C group.…”

Section: Discussionmentioning

confidence: 91%

“…19 The use of a palatal crib has been proposed as an excellent treatment option, because it prevents thumb or pacifier sucking, as well as tongue thrust. 3,[20][21][22][23] According to Haryett et al, 22 the palatal crib is effective for the elimination of a thumb-sucking habit in 85% to 90% of subjects. Studies reporting the success of early treatment in subjects with anterior open bite when compared with a well-matched control group, however, are scarce in the literature.…”

mentioning

confidence: 99%

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Stability of quad-helix/crib therapy in dentoskeletal open bite: A long-term controlled study

Mucedero

Franchi

Giuntini

et al. 2013

American Journal of Orthodontics and Dentofacial Orthopedics

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Introduction: The purpose of this study was to evaluate the long-term stability of quad-helix/crib treatment in subjects with dentoskeletal open bite. Methods: Twenty-eight subjects (11 boys, 17 girls; mean age, 8.2 6 1.3 years) were treated consecutively with quad-helix/crib appliances. The patients were reevaluated at the end of active treatment with the quad-helix/crib (mean age, 9.7 6 1.6 years) and at least 5 years after the completion of treatment (mean age, 14.6 6 1.9 years). A control group of 20 untreated subjects with the same dentoskeletal disharmony was used for the statistical comparison (Mann-Whitney U test). Results: In the long term, the quad-helix/crib group showed a significant reduction in the ANB angle (À1.3 ), a downward rotation of the palatal plane (1.8 ), a greater increase in overbite (2.1 mm), and a decrease in overjet (À1.5 mm) when compared with the controls. Conclusions: In the long term, the use of the quad-helix/crib appliance led to successful outcomes in about 93% of the patients considered. Correction of dentoskeletal open bite was associated with a clinically significant downward rotation of the palatal plane. (Am J Orthod Dentofacial Orthop 2013;143:695-703)

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Section: Discussioncontrasting

confidence: 89%

Section: Discussionmentioning

confidence: 91%

mentioning

confidence: 99%

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Stability of quad-helix/crib therapy in dentoskeletal open bite: A long-term controlled study

Mucedero

Franchi

Giuntini

et al. 2013

American Journal of Orthodontics and Dentofacial Orthopedics

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“…The present study was derived from the research of Ferreira Pedrin in 2006, 14 which consisted of a prospective randomized study with the treatment of 30 individuals (mean age of 8.33 years) with anterior open bite, who had been compared to a similar control group composed of 30 individuals (mean age of 8.61 years). These authors verified after a 12-month treatment the correction of the malocclusion in 24 individuals who had undergone treatment with a mean overbite closure of 5.01 mm, while control group showed 1.38 mm, allowing the spontaneous correction in only 4 subjects.…”

Section: Methodsmentioning

confidence: 99%

“…The study of Erbay et al 13 in which used Frankel functional regulator (FR-4), and other study by Ferreira-Pedrin et al 14 in which a removable appliance with a palatal crib combined to a chincup was used. Other systematic reviews 8,18 evidenced the lack of studies investigating the stability in the mixed dentition, using a treatment protocol and comparing to a matched control group.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Evaluation of the stability of open bite treatment using a removable appliance with palatal crib combined with high-pull chincup

Ferreira¹,

Almeida

Torres

et al. 2012

Dental Press J. Orthod.

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Objective: The aim of this prospective study was to cephalometrically analyze the stability of dentoalveolar and skeletal changes produced by a removable appliance with palatal crib associated to high-pull chincup in individuals with anterior open bite treated for 12 months, and compare them to individuals with similar malocclusion and age, not submitted to orthodontic treatment, also followed for the same period.Methods: Nineteen children with a mean age of 9.78 years old treated for 12 months with a removable appliance with palatal crib associated with chincup therapy were evaluated after 15 months (post-treatment period) and compared with a control group of 19 subjects with mean age of 9.10 years with the same malocclusion that was followed-up for the same period. Seventy-six lateral cephalograms were evaluated at T 1 (after correction) and T 2 (follow-up) and cephalometric variables were analyzed by statistical tests. Results: The results did not show significant skeletal, soft tissue or maxillary dentoalveolar changes. Overall, treatment effects on the experimental group were maintained at T 2 evaluation with an increase of 0.56 mm in overbite. Overjet and maxillary incisors/molars position (vertical and sagittal) remained essentially unchanged during the study period. Only mandibular incisors showed significant changes (labial inclination and protrusion) compared to control group. Conclusions: Thus, it can be concluded that the early open bite treatment with a removable appliance and palatal crib associated with high-pull chincup therapy provided stability of 95%.Keywords: Open bite. Angle Class I malocclusion. Orthodontics. Objetivo: avaliar cefalometricamente a estabilidade das alterações dentoesqueléticas e tegumentares, no protocolo de tratamento com o aparelho removível com grade palatina associado à mentoneira, em jovens portadores de mordida aberta anterior tratados por 12 meses, comparando-os com um grupo de jovens portadores de má oclusão semelhante que não foram submetidos ao tratamento ortodôntico. Métodos: avaliou-se um total de 76 telerradiografias em norma lateral de 38 jovens. Dois grupos compuseram a amostra: o Grupo 1 (Controle), composto por 19 jovens (idade média de 9,10 anos) que não receberam qualquer tratamento para a correção de sua má oclusão; e o Grupo 2 (Tratado), composto por 19 jovens (idade média de 9,78 anos) que receberam o protocolo de tratamento durante 12 meses. Verificou-se a estabilidade do tratamento da má oclusão durante aproximadamente 15 meses após a remoção dos aparelhos. Os dados obtidos nas medidas cefalométricas (diferenças das médias das alterações) para os dois grupos foram computados pelo teste t de Student não pareado. Resultados: os resultados mostraram que os componentes esquelético e tegumentar não apresentaram alterações significativas. O overbite, overjet e o posicionamento dos dentes superiores mantiveram-se estáveis. Os incisivos inferiores vestibularizaram e protruíram no Grupo Tratado, enquanto o Grupo Controle apresentou maior extrusão desses dente...

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Orthodontic and orthopaedic treatment for anterior open bite in children

Lentini-Oliveira¹,

Carvalho²,

Ye³

et al. 2007

Cochrane Database of Systematic Reviews

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A prospective study of the treatment effects of a removable appliance with palatal crib combined with high-pull chincup therapy in anterior open-bite patients

Cited by 48 publications

References 10 publications

Stability of quad-helix/crib therapy in dentoskeletal open bite: A long-term controlled study

Stability of quad-helix/crib therapy in dentoskeletal open bite: A long-term controlled study

Evaluation of the stability of open bite treatment using a removable appliance with palatal crib combined with high-pull chincup

Orthodontic and orthopaedic treatment for anterior open bite in children

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