According to the WHO, caries is the most prevalent oral disease, and malocclusion, which some authors classify as the third oral disease; there is little information linking the severity of crowding and dental caries. Objective: To determine if there is more caries with increasing degree of crowding. Material and methods: A sample of 120 pretreatment orthodontic study models was formed, which was divided into three groups: 40 models with mild crowding, 40 with moderated crowding, and 40 with severe crowding. The number of caries of each patient was observed. The information was tabulated in an Excel spreadsheet and statistics was conducted in SPSS version 18 program. Descriptive statistics were calculated and ANOVA and student t test was performed. Results: The average age was 16 years. An average of 3.5 caries was found in mild crowding , in moderate crowding an average of 4.2 caries, and 6.3 in severe crowding. When testing ANOVA between groups, statistically significant differences were found between them. Comparing with t tests, in the mild-to-moderate group no statistical differences were found; however, other statistically significant differences between the mild and severe crowding were found. Conclusion: The number of caries increased in patients with major problems of dental crowding.
(Rev Esp Ortod. 2016;46(1):029-032)