Dental and Chronological Ages as Determinants of Peak Growth Period and Its Relationship with Dental Calcification Stages

Abstract

Purpose:To investigate the relationship between dental, chronological, and cervical vertebral maturation growth in the peak growth period, as well as to study the association between the dental calcification phases and the skeletal maturity stages during the same growth period.Methods:Subjects were selected from orthodontic pre-treatment cohorts consisting of 420 subjects where 255 were identified and enrolled into the study, comprising 145 girls and 110 boys. The lateral cephalometric and panoramic radiographs were examined from the archives of the Department of Orthodontics, Aristotle University of Thessaloniki, Greece. Dental age was assessed according to the method of Demirjian, and skeletal maturation according to the Cervical Vertebral Maturation Method. Statistical elaboration included Spearman Brown formula, descriptive statistics, Pearson’s correlation coefficient and regression analysis, paired samples t-test, and Spearman’s rho correlation coefficient. Results:Chronological and dental age showed a high correlation for both gender(r =0.741 for boys, r = 0.770 for girls, p<0.001). The strongest correlation was for the CVM Stage IV for both males (r=0.554) and females (r=0.68). The lowest correlation was for the CVM Stage III in males (r=0.433, p<0.001) and for the CVM Stage II in females (r=0.393, p>0.001). The t-test revealed statistically significant differences between these variables (p<0.001) during the peak period. A statistically significant correlation (p<0.001) between tooth calcification and CVM stages was determined. The second molars showed the highest correlation with CVM stages (CVMS) (r= 0.65 for boys, r = 0.72 for girls). Conclusion:Dental age was more advanced than chronological for both boys and girls for all CVMS. During the peak period these differences were more pronounced. Moreover, all correlations between skeletal and dental stages were statistically significant. The second molars showed the highest correlation whereas the canines showed the lowest correlation for both gender.

Salivary alkaline phosphatase activity and chronological age as indicators for skeletal maturity

“…7 Although Ramos et al 7 found a weak correlation between skeletal age and chronological age, the current data showed a significant positive correlation between chronological age and skeletal growth (Figure 3). These findings agreed with Litsas and Lucchese 21 who also reported that skeletal growth was positively associated with chronological age. To date, no published studies have investigated CVMS prediction from chronological age.…”

“…19 In the present study, salivary ALP activity, protein concentration, and chronological age were investigated as biomarkers for skeletal maturation assessment since they have been associated with bone metabolism and general body growth. 20,21 The current results suggested that salivary ALP activity may have a promising diagnostic value in skeletal maturity assessment.…”

Segmented Bayesian calibration approach for estimating age in forensic science

“…This means that, in our sample, the maturity growth rate decreased in proximity of this value. Similarly to what found in the literature (see Litsas & Lucchese, ; Prieto et al., ), this point was different between female, who exhibited an earlier dental maturation, and male subjects (respectively, 10.49 and 10.88 years). In order to understand the distribution of age for specific values of the predictor S , some calibrating distributions from SNBC model are reported in Figure which highlights a twofold aspect: the nonnormality of age distributions and their heteroskedasticy.…”

“…(), we used the sum of open apices ( S ) as age predictor. Subject's gender have been proved to differently influence this measure (Litsas & Lucchese, ; Prieto et al., ), thus we implemented two age estimation for girls and boys separately.…”

Relationship between dental age, chronological age and cervical vertebral maturation in children and adolescents from Bucaramanga, Colombia

“…The dental assessment method according to the degrees of calcification, proposed by Demirjian, 14 is considered a valid method and a world reference that can be used to compare data from different studies on this matter. 8,15,16 In the present study the mean of the differences between dental and chronological age was found to be 0.60±.44 in both sexes. Results by sex were 0.58±1.48 years in females and 0.63±1.38 years in males.…”