Prevalence and Type of Dental Abnormalities Among Patients With Different Skeletal Malocclusion Classes in Northern Iran

Background Dental abnormalities are considered important, since they cause aesthetic and functional problems for people. Orthodontic treatment becomes more complicated when craniofacial accompanied with dental abnormalities. Objective This study aims to compare the frequency type of among patients different skeletal malocclusion classes in northern Iran terms age gender. Methods Participants were 310 (32.9% Class I, 33.9% II, 33.2% III). They evaluated respect hypodontia, hyperdontia, impaction, microdontia, macrodontia, dens invaginatus/evaginatus. Association prevalence gender was assessed by chi-square test Fisher’s exact test, while independent t-test used determine its association age. Results The overall 33%. III had highest rate (40.8%); however, difference not statistically significant (P=0.105). Hypodontia impacted teeth most frequent all groups. Occurrence tooth impaction differed significantly three groups (P<0.001), where belonged class group. males (P=0.040). Tooth microdontia two that showed (P<0.05). Conclusion is prevalent people malocclusion. some associated