Gender-adjustment of Moyers dentition analysis for the Nayarit (Mexico) population

AbstractMoyers percentile tables are one of the diagnostic elements used for early age malocclusions. These tables predict the size of non erupted canines and premolars.Material and methodsThe sample was composed of 180 male patients study models and 319 female patients study models used for orthodontic pre-treatment. Models met inclusion criteria. So as to match samples, 180 female study models were randomly selected. Descriptive statistics were calculated, percentiles 75 and 50 for each gender, t Student test was used to compare results of tables with adjustment of percentiles 75 and 50 for each gender with Moyers tables results and values of the study models.ResultsStatistically significant differences were found when comparing Moyers’ tables results with those of the Nayarit population. Percentile 75 of Nayarit tables over-estimated values of canines and premolars in both genders. No statistical differences were found with 50 percentile.ConclusionsIt is recommended to use the 50 percentile of the conducted adjustment in order to predict size of canines and premolars