Avaliação da reabsorção radicular após a movimentação ortodôntica em dentes tratados endodonticamente
Abstract
O presente estudo teve como objetivo avaliar quantitativamente o grau de reabsorção radicular em dentes com tratamento endodôntico (Grupo 1) e dentes com vitalidade (Grupo 2), antes e após o tratamento ortodôntico. A amostra foi composta de 20 indivíduos, dos gêneros masculino e feminino. O critério de seleção foi a presença de um incisivo superior com tratamento endodôntico prévio ao tratamento ortodôntico e o seu correspondente homólogo, com vitalidade para controle e parâmetro de comparação. As medições foram realizadas em radiografias periapicais e modelos de estudo em gesso obtidos antes e após o tratamento ortodôntico corretivo, por um único operador, com um paquímetro digital e auxílio de uma lupa. Mediu-se na radiografia, o comprimento total (da borda incisal até o ápice radicular) e a altura da coroa do dente tratado endodonticamente e do correspondente com vitalidade. Seguiu-se a medição da altura da coroa (da borda incisal até a margem gengival) de ambos os dentes nos modelos em gesso e aplicou-se regra de três baseada no método de Huckaba (1964), para se obter o comprimento real dos dentes. Os resultados demonstraram que, apesar do grupo 1 ter apresentado um grau de reabsorção menor que o grupo 2 ao final do tratamento ortodôntico, essa diferença não foi estatisticamente significante (p = 0.05). Concluiu-se que os dentes com tratamento endodôntico apresentaram menor grau de reabsorção radicular ao final do tratamento ortodôntico.
UNITERMOS: reabsorção radicular; tratamento ortodôntico; dentes tratados endodonticamente.
SUMMARY
The present study aims to evaluate quantitatively the degree of root resorption in endodontically treated teeth (Group 1) and vital teeth (Group 2), before and after orthodontic treatment. The sample was composed of 20 subjects, being male and female. The selection criterion was the presence of a maxillary incisor with previous endodontic treatment to the orthodontic treatment and its homologous vital correspondent for control and comparison parameter. The measurements had been carried through in periapical X-rays and study casts gotten before and after the comprehensive orthodontic treatment, for an only operator, with one digital caliper a lupe. Once measured in the X-ray, the total length (from the incisal to the root apex) and the height of the crown of the tooth endodontically treated and the correspondent with vitality. It was followed by measurement of the height of the crown (from the incisal to the gum) of both the teeth in the casts and was applied the method of Huckaba (1964), to get the real length of teeth. The results had demonstrated that, despite group 1 having shown a degree of lesser resorption than group 2 to the end of the orthodontic treatment, this difference was not statistically significant (p = 0.05). It was concluded that the teeth with endodontic treatment had presented minor degree of root resorption at the end of orthodontic treatment.
UNITERMS: root resorption; orthodontic treatment; endodontically treated teeth.
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