VALORACIÓN DE LOS MÉTODOS DE ANÁLISIS DE DENTICIÓN MIXTA DE MOYERS Y TANAKA-JOHNSTON, EN LA PREDICCIÓN DEL DIÁMETRO MESIODISTAL DE CANINOS Y PREMOLARES NO ERUPCIONADOS1/ASSESSMENT OF MOYERS AND TANAKA-JOHNSTON MIXED DENTITION ANALYSES FOR THE PREDICTION OF MESIODISTAL DIAMETERS OF UNERUPTED CANINES AND PREMOLARS

The objective of this study was to determine whether the methods of Moyers percentile (p) 75, p85, p95 and Tanaka-Johnston, used in the prediction of the mesiodistal diameter of unerupted canines and premolars, either overestimate or underestimate their respective succedaneous diameter. Diagnostic technology assessment in 56 plaster models of schoolchildren from Medellin, with class I skeletal and permanent erupted incisors, canines, and bicuspids, with follow-ups from 6 to 12 years of age. The teeth mesiodistal diameter was measured by the predictive methods of Tanaka-Johnston and Moyers p75, p85, p95. The predicted and actual values were evaluated by means of related Student's t test and Wilcoxon test. These methods' reproducibility was calculated by intraclass correlation coefficient (95% CI), and their level was calculated using Bland-Altman 95% limits. In the upper arch, significant actual value differences were observed with the T-J and Mp95 measurements. In the lower arch, the values of all the methods were different to the actual value (p > 0.05), except Mp75.