Abstract:

Aim. Determination of the incidence of different types of vertical facial pattern in Bulgarian individuals aged 17-20 years.
Material and Methods. The study included 110 subjects, 43 male and 67 female. The mean age of the participants was 18.4 ± 6.1 years. Lateral cephalometry was performed to each subject and two angles were measured: M/SN angle (between the mandibular (M) and the SN plane), and M/SpP angle (between mandibular and spinal plane). The subjects were divided into 3 groups according to M/SN angle and M/SpP angle: Hypodivergent, normodivergent and hyperdivergent.
Results. In men according to M/SN angle, the ratio of hypo- to normo- to hyperdivergent was 44.2%: 27.9%: 27.9%, while in women it was 23.9%: 44.8%: 31.3% respectively. According to M/SpP angle in men this ratio was 51.2%: 37.2%: 11.6%, and in women 35.8% : 44.8% :19.4% respectively.
Conclusion. In men prevailed the group of the hypodivergent individuals, while in women, normodivergent facial pattern is the largest group, calculated on both angles.

Key words: incidence of vertical facial pattern, sexual dimorphism