Secular acceleration and the impact of obesity or excessive body weight on the eruption of permanent teeth in children
Abstract
Aims: The study aimed to update the data (number of erupted permanent teeth) in present-day Czech children and to evaluate the impact of sex, secular trend, obesity or excessive body weight of children on the eruption of permanent teeth. Matherial and method: The sample included 1267 school children going to schools in Prague and nearby.
The basis of the research was one-time epidemiological examination of child dentition - the number of erupted permanent teeth visible in the mouth cavity, calendar age, sex, body height and body weight were recorded. The children body proportions were evaluated with BMI index and compared with percentile graphs.
The data were statistically processed with IBM SPSS Statistics 23 software and with MS Excel. All statistical tests were performed at the level of statistical significance 0.05.
Results: The nubmer of erupted teeth is significantly higher in girls only at the age categories 6-6.9 years (p = 0.011) and 13-13.9 years (p = 0.002). The number of erupted permanent teeth is significantly higher in our study than in the works published earlier (p < 0.0001, in all cases).
In obese or overweight children there are significantly higher numbers of erupted permanent teeth than in the control group - with the exception of the age group 13-13.9 years (p = 0,258). Conclusion: Eruption of permanent teeth is influenced by the secular acceleration, body weight and gender of the individual, to which orthodontic treatment have to be adapted, especially its correct timing.