RESUMO
Para comparar medidas da análise de modelos obtidas por meio de diferentes instrumentos (compasso de pontas secas, paquímetro digital e programa de computador), foram selecionados, aleatoriamente, modelos de estudo de 20 pacientes. Cada dente foi medido, porum único examinador, utilizando os três métodos. As medidas foram realizadas em momentos distintos e repetidas em 20% da amostra. O teste t Student para amostras pareadas mostroudiferença significativa entre a primeira e a segunda medida com compasso e as mesmas foram excluídas do estudo. As medidas obtidas com paquimetro e com o programa apresentaram correlação fortissima e não diferiram significativamente na repetição. AANOVA (a=%) não evidenciou diferenças significativas entre as medidas, por grupos de dentes, utilizando paquimetro e método digital e apresentaram excelente reprodutibilidade, ao contrario dasobtidas com compasso de pontas secas.
In order to compare the measures for dental models analysis gotten from different tools (dry tips compass, digital caliper rule and a computer program), 20 dental models with a completepermanent dentition were selected. Each tooth was measured by one examiner, using the three methods. The measures were done in distinct moments and 20% of the sample was repeated. The t Student test for paired sainples showed a significant difference between the measures using thedry tips compass, so they were excluded from the study. Although, the measures obtained with caliper rule and computer program showed strong correlation and did not differ significantly on repetition. The ANOVA (a=5%) did dot evidenced signifícant difference between the measuresobtained, by groups of teeth, with caliper rule and digital method, which also presented excellent reproductibility, in opposite to the measures obtained with the dry tips compass.
