Cephalometric effects of the dentoskeletal alterations yielded by the removable appliance with tongue crib associated to chincap therapy on the treatment of anterior open bite / Estudo cefalométrico dos efeitos do aparelho removível com grade palatina, associado à mentoneira, no tratamento de mordida aberta anterior

AUTOR(ES)

Fernando Pedrin Carvalho Ferreira

DATA DE PUBLICAÇÃO

2004

RESUMO

This prospective study aimed at conducting a cephalometric evaluation of the dentoskeletal alterations secondary to treatment of anterior open bite by utilization of removable appliance with tongue crib associated to chincap therapy, for a period of 12 months. Sixty young white individuals of both genders were selected, who presented a normal molar relationship and anterior open bite and were randomly divided into two groups (control and treated) comprising 30 patients each, thus characterizing a randomized controlled trial. Group 1 (control) included 7 males and 23 females with Class I malocclusion with anterior open bite, not submitted to any type of orthodontic treatment, with an initial mean age of 8.33 years (ranging from 7 years to 9 years 10 months). Group 2 comprised 20 females and 10 males presenting Class I malocclusion with anterior open bite, with an initial mean age of 8.61 years (ranging from 7 years to 9 years 11 months), who were treated by utilization of a removable appliance with tongue crib associated to chincap therapy. Comparison between groups was conducted by the unpaired t test. The results allowed the conclusion that the removable appliance associated to chincap therapy did not yield significant skeletal alterations or any significant effect on the vertical dimension of the face (vertical control) when compared to a control group. However, with regard to the dental alterations, both maxillary and mandibular incisors were retruded, lingually tipped and extruded. The maxillary and mandibular permanent first molars did not display statistically significant differences in both vertical and horizontal directions. The mean closure of the anterior open bite was 5.01mm for the treated group and 1.38mm for the control group. It was concluded that the treatment protocol followed in this investigation yielded only dental alterations for correction of the anterior open bite.

ASSUNTO(S)

cefalometria mordida aberta mordida aberta cefalometria

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