Diagrams application in the deciduous dentition analysis

Marília Inez FIGUEIREDO, Roberval de Almeida CRUZ

Introduction: Recently, diagrams have been developed in order to analyze normality and malocclusion in the deciduous dentition. Aim: The aim of this study is to apply the diagrams developed by Long in 59 cast models of normal dentitions (group A) and 139 abnormal (group B), in order to evaluate its clinical eficiency before the known clinical criteria, which characterizes normal occlusion and malocclusion. Methods: Group A, with 118 casts of patients with normal occlusion, was stratiied in 42 models of superior arches and 36 of inferior ones of type I of Baume; 17 superior casts and 23 inferior ones of arches of type II. Group B, with 278 casts with different types of malocclusions, was composed of 78 superior arches and 75 inferior ones of type I; 61 superior arches and 64 inferior ones of type II. A total of 396 casts were examined. Results: The Kappa test between diagrams and clinical criteria demonstrated low concordance between diagnosis of normality and abnormality of the dentition, regardless of the type of arch evaluated. The diagrams disagree in 78% of the cases clinically diagnosed as normal and in 20% of those with morphological errors. Conclusion: the proposed diagrams don’t apply to the primary dentition evaluation.

Keywords: Deciduous dentition. Morphologic analysis. Normal occlusion. Deciduous occlusion. Malocclusion.

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