ABSTRACT
The purpose of this study was to assess the correlation between the known chronological age and the dental cementum thickness (DCT) in male and female subjects in different age groups. MATERIAL AND METHODS: The study sample consisted of 57 donor teeth of both sexes. Teeth were classified by donors' sex and divided into three age groups: 10-19, 30-39 and 60-69 years. Tooth roots were cut with transverse ground sections in the apical, middle, and cervical thirds. DCT measurements were made on photomicrographs of light microscope. The correlation between DCT and the chronological age was calculated using the Spearman correlation coefficient. RESULTS: A positive correlation was found (r=0.47, p <0.001) between DCT and age of the donor. DCT decreased from apical to cervical ground section (median [IQR] apical section 216.72 [128.25-375.00] µm, middle section 158.44 [87.66-284.90] µm; cervical section 96.60 [70.05-165.59] µm). DCT variability was influenced by sex, number of tooth roots and the condition of the tooth crown. The influence differed depending on the location of the section, being most prominent cervically. CONCLUSION: The present study showed correlation of DCT with age, with significant influence of sex, number of tooth roots, condition of the tooth crown and location of the root section.
Subject(s)
Age Determination by Teeth , Tooth , Child , Dental Cementum/diagnostic imaging , Female , Humans , Male , Microscopy , Tooth Crown , Tooth Root/diagnostic imagingABSTRACT
OBJECTIVE: To assess the psychosocial impact of malocclusion, establish its association with the severity of malocclusion and determine the effects of gender and age in such association. BASIC RESEARCH DESIGN: Cross-sectional study. METHODS: 400 adolescents aged between 12-15 years were randomly selected. Each participant was examined for malocclusion and categorized according to Index of Orthodontic Treatment Need (IOTN) and Dental Aesthetic Index (DAI). The Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) was used to assess the psychosocial impact of malocclusion. RESULTS: Significant differences were noted between PIDAQ subscales, and grades of malocclusion assessed by IOTN and DAI (p⟨0.05). Gender differences were noted in Dental Self Confidence (DSC), Social Impact (SI) and Psychological Impact (PI) for the same severity of malocclusion (p⟨0.05). IOTN-DHC predicted the total and subscales of PIDAQ scores. Gender and age were the independent predictive variables of the relationship between the PIDAQ scores and the IOTN-DHC grades for the DSC and AC subscales. Gender independently predicted psychological impact. CONCLUSION: Severity of malocclusion, gender and age were related to impacts on the psychosocial wellbeing of participants. Overall, females and older participants experienced worse psychosocial impact.
