5th International Congress of the School of Dental Medicine University of Zagreb March 1- 2, 2019, School of Dental Medicine and Hotel Westin Zagreb Abstracts

Aim: Establishing skeletal maturity in orthodontics is an important part in clinical and scientific research. Facial growth occurs in vertical and horizontal dimensions. Depending on the dominance of one of the components, three basic growth patterns are known; neutral, vertical and horizontal. The purpose of the study was to determine whether there is a difference between skeletal and chronological age in subjects with different facial growth patterns. Materials and methods: The study was conducted on a total of 146 subjects (48 with horizontal, 48 with vertical and 50 with neutral growth patterns) aged 12 to 18 years. Determination of facial growth pattern was done by cephalometric analysis (Zagreb 82 MOD), using the Dolphin 10.5 software and 8 variables were measured on each cephalogram. Skeletal maturity estimation was performed according to CVMS tables. Results: Statistically significant differences (p < 0.001) were found between subjects with horizontal and vertical growth pattern and between the subjects with neutral and vertical growth pattern (p < 0.05), while between horizontal and neutral there was no significant difference in skeletal maturity. In group 12 - 15 yrs of age there was statisticaly signifficant difference (p < 0.05) in skeletal maturity between subjects with horizontal and vertical growth pattern. In older group (16 - 18 yrs) tere was statisticaly signifficant difference (p > 0.05) in skeletal maturity between subjects with vertical growth pattern comparing with horizontal and neutral. Subjects aged 12 to 15 years with a horizontal and neutral growth pattern were on average in the fourth and vertical in the third stage of skeletal maturity. In the older age group (16 to 18 years), subjects with a horizontal and neutral growth pattern were on average in the fifth and vertical in the fourth stage of skeletal maturity. Conclusion: Subjects with vertical growth pattern were in lower stage of skeletal maturity than those with horizontal growth pattern at the same chronological age. Subjects with vertical growth pattern were in lower stage of skeletal maturity than those with horizontal and neutral growth pattern at the same chronological age.