Abstract:
This study aims to evaluate the effects dentoskeletal through cephalometric
tracings obtained from lateral cephalograms taken at the beginning and end of the
orthopedic phase of treatment in patients with Class II division 1 treated with Twin
Block functional orthopedic appliance. The sample consisted of two groups,
experimental and control. The experimental group consisted of 11 patients were
males and 9 females treated at the Instituto da Face® Clinical Cachoeirinha,
Gravataí, Taquara, Santo Antônio da Patrulha e Novo Hamburgo, all in the state of
Rio Grande do Sul and Clinical Odontologic of the Ingá College (Unit of Higher
Education Ingá Ltda., Maringá, PR) with initial mean age of 11.76 years, 12.89 and
end of mean follow-up of 1.13 years. The control group was composed of 14 young
males and 11 females selected from the files of documentation of the Baurú Faculty
of Dentistry, São Paulo, with an initial mean age of 11.39 years, 12.45 years and the
final mean follow-up 1.06 years. Both groups should have antero-posterior
relationship of at least ¼ of Class II molars, with no individual had undergone
previous orthodontic treatment. Based on the results obtained and in accordance
with the methodology it was concluded that: The Twin Block appliance showed no
significant changes in the maxillary component, there was significant change in
mandibular component, upper and lower dentoalveolar changes, AFAI increased and
decreased overjet, overbite and molar relationship that contributed to the correction
of Class II.
