Body height and weight and respiratory diseases in skeletal Class II/1 orthodontic patients

The aims of this study were to determine if there is an increased incidence of respiratory diseases in patients with Angle Class II/1 skeletal intermaxillary relationship in comparison to eugnathic patients and if there is a difference of body height and weight between them. The sample consisted of 60 eugnathic subjects and 88 subjects with Class II/1. Girls were examined at an age of 6, 7, 8, 10, 13 and 14 and boys at an age of 7, 8, 9, 11, 14 and 15. All subjects underwent an orthodontic and medical examination in these time intervals. Data about their respiratory diseases as well as those about their height and weight were taken from their medical files in school dispensaries and were statistically analyzed. No statistically significant differences with regard to the frequency of respiratory diseases were found between eugnathic subjects and those with Class II/1. In almost all investigated time intervals subjects with Class II/1 were statistically significantly higher than the eugnathic subjects, but only in the 8-years old male group with Class II/1 the subjects were heavier than others. The results of this study suggest that patients with Class II/1 either have a faster growth pattern or belong to an asthenic constitution type.