Estimating emergence sequences of permanent teeth in Flemish schoolchildren using interval-censored biplots: a graphical display of tooth emergence sequences.

Objectives: The aim of the present study was to investigate the pattern of emergence of permanent teeth using nonparametric techniques.

Materials And Methods: Data were obtained from the Signal-Tandmobiel project, a 6-year prospective dental study conducted in Flanders (Belgium) in which 4468 primary school children born in 1989 were annually examined. A new exploratory method for interval-censored data, the IC-biplot, was applied to estimate individual sequences of emergence.

Dealing with misclassification and missing data when estimating prevalence and incidence of caries experience.

Objectives: The aim of this research was to estimate the prevalence and incidence of caries experience (CE) in first permanent molars while dealing with misclassification and missing of data.

Methods: CE was modeled as a Hidden Markov Model in which the response variable is subject to misclassification and missingness. The proposed analysis extends that of García-Zattera et al.