ABSTRACT
To measure torque angle values of brackets designed for canines, comparing it to their prescription values. METHODS: One hundred and sixty maxillary -2o and mandibular -11o canine brackets of Roth prescription from the following brands were selected: Abzil, Eurodonto, Morelli and Ormco. The brackets were set in wax and images were obtained by scanning. Reference points were determined over these images, lines drawn and the torque angle was measured. The Student's t-test and the Wilcoxon signed-rank test were used at a significance level of 5%. RESULTS: For maxillary canine brackets, the medium torque angle values were: Abzil -0.93o ± 0.88o; Eurodonto 0.13o ± 0.34o; Morelli -2.56o ± 0.50o, and Ormco -1.16o ± 1.27o. For mandibular canine brackets, the values were: Abzil -11.76o ± 0.40o; Eurodonto -10.40o ± 0.25o; Morelli -11.18o ± 0.56o, and Ormco -11.36o ± 0.30o. For maxillary canine brackets, the brands Abzil, Morelli, and Ormco presented statistically diferente values from those indicated for prescription. For mandibular canine brackets, the brands Abzil, Eurodonto, and Ormco presented statistically different values from the prescribed ones. CONCLUSIONS: Some marketed brands present differences between the torque angle found in the brackets and those recommended in the prescription. However, these differences are clinically acceptable...
Subject(s)
Humans , Orthodontic Brackets , Orthodontics , TorqueABSTRACT
As extrações dentárias constituem um recurso terapêutico em Ortodontia, principalmente em adultos. O presente trabalho teve por objetivo revisar a literatura acerca das indicações, contraindicações, cuidados na mecânica para más oclusões tratadas com exodontia de primeiros molares permanentes, e relatar um caso clínico no qual se optou pela extração destes dentes. Foi demonstrado que este tipo de tratamento pode ser favorável quando bem indicado.
Dental extractions are a therapeutic resource in Orthodontics, mainly in adult patients. This study aimed to perform a literature review about the indications, contraindications, and cautions regarding mechanics in cases of malocclusion treated with first permanent molars extraction, and to report a case in which the extraction of these teeth was the chosen approach. It was demonstrated that this treatment may be favorable when properly indicated.