Özet:

Objective: To evaluate the vertical position and inclinations of the 1. molars and incisors in adults having skeletal Class 1 and 2 anomaly combined with increased overbite. Materials and Method: Pretreatment cephalograms of 185 orthodontic patients (75 men, 113 women) between 16 and 45 years of age with increased overbite (≥ 4.5mm), without great restorations/crown on incisors, 1. molar teeth and tooth agenesis were evaluated. The sample was divided into 3 groups as: Group 1 (n=87) skeletal Class I (ANB=0-4), Group 2 (n=64) skeletal Class 2 (ANB>4.5) with Angle class II/1 and Group 3 (n=37) skeletal Class 2 with Angle Class II/2 malocclusions. Three angular and 8 linear measurements were performed. Groups were compared according to gender. For statistical evaluations Bonferroni-corrected ANOVA test, Mann-Whitney U and Kruskal-Wallis tests were used. Results: In all groups no significant differences were found in incisors’ inclination [1-NA (°), 1-NB (°), interincisal degree (°)] and sagittal position [1-NA (mm), 1-NB (mm)] between the genders. However significant differences were found in 1. molar and incisor vertical positions (1-PP, 6-PP, 1-GoGn, 6-GoGn) between Groups 1 and2. In all genders significant differences were foundd in interincisal degree whereas no differences were observed in maxillary and mandibular 1. molar heights in all groups. In Group 2, more protrusive mandibular incisors, extrusive mandibular and maxillary incisors and lower interincisal degree were found. In Group 3, increased interincisal degree and more retrusive and retroclined incisor positions were found compared to Group 1 and 2. Conclusion: The differences between groups were related to incisors’ vertical position and inclinations rather than first molars’ positions.

Anahtar Kelimeler: