2006
DOI: 10.1590/s1415-54192006000200016
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O aparelho quadrihélice (Quad-helix) e suas variações

Abstract: O presente artigo objetivou mostrar a eficiência dos vários desenhos do aparelho quadrihélice, de Ricketts, na correção das desarmonias dentoalveolares. Devido às suas várias formas de confecção, assim como de sua ativação, o quadrihélice tornou-se um acessório útil não somente na sobrecorreção da discrepância transversal e sagital, mas também no tratamento das más oclusões da Classe II, divisão 1, de Angle, principalmente nos casos em que a rotação do molar é desejada como parte do tratamento. Também é releva… Show more

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“…The quad helix was chosen in the case given the need for maxillary expansion, because it is well tolerated in children aged 3 years or more, and because it performs a slow orthodontic movement that does not adversely interfere in the eruption of the child's permanent teeth. The child in the case showed mixed dentition at the beginning of the orthodontic treatment, which aligns with the Duarte (2006) statement that orthodontic intervention, following bioprogressive science, can be adopted in mixed and permanent dentition because it is simple and applies light forces between 2N and 6N (Newton force measure).…”
Section: Discussionsupporting
confidence: 78%
See 1 more Smart Citation
“…The quad helix was chosen in the case given the need for maxillary expansion, because it is well tolerated in children aged 3 years or more, and because it performs a slow orthodontic movement that does not adversely interfere in the eruption of the child's permanent teeth. The child in the case showed mixed dentition at the beginning of the orthodontic treatment, which aligns with the Duarte (2006) statement that orthodontic intervention, following bioprogressive science, can be adopted in mixed and permanent dentition because it is simple and applies light forces between 2N and 6N (Newton force measure).…”
Section: Discussionsupporting
confidence: 78%
“…The choice of the quad helix, a functional orthopedic appliance, to treat bruxism in the case was partly based on the patient's dental arch condition, which showed a remarkable lack of space for the eruption of permanent teeth. In response, the quad helix worked as a maxillary expander, according to Duarte (2006), one capable of allowing the reconstruction of an adequate arch by means of dentoalveolar expansion and, in turn, the possibility of unlocking malocclusions and establishing normal function. Moreover, using the quad helix allowed changing the child's proprioception in order to deprogram the habit of bruxism and adopt a new form of occlusal contact, which corroborates with Loddi et al (2010) who founds that children can readily adapt to changes in the structure of their stomatognathic system.…”
Section: Discussionmentioning
confidence: 99%