Frequency distribution of TMJ internal derangement by gender, age and genotypes of ANKH polymorphisms in the sample of the study (n = 55).

aresults based on univariate logistic regression statistics.bresults based on multivariate logistic regression statistics when excluding genotypes of ANKH-OR polymorphisms.cresults based on multivariate logistic regression statistics when excluding genotypes of ANKH-TR polymorphisms.dmean ± standard deviation (years of age).eeach additional 10 years of age.