| Abstract [eng] |
Relevance. Unrestricted mandibular movements and correct occlusion are very important in chewing and speaking, and for this reason it is important to evaluate these aspects during clinical examination. As the child grows, the jaw also increases and the range of movements changes. Aim of the study. Evaluate the connection between the type of occlusion and functional movements in children with orthodontic anomalies during the mixed and permanent dentition stages. Material and methods. This study involved 48 children aged between 6 and 18 years who required orthodontic treatment. The type of occlusion was determined in the sagittal and transverse planes, along with the assessment of vertical and horizontal overbite. Mandibular movements were measured, including maximum mouth opening, protrusion, and lateral movements (laterotrusion) on both sides. Statistical analysis of the data was performed using IBM SPSS Statistics 30.0 and Microsoft Office Excel 16.89 software. Results. In the sagittal plane, Angle Class II occlusion was the most commonly observed, followed by Class I, while Class III was the least prevalent. The highest measurements for mouth opening and protrusion were recorded in subjects with Angle Class III occlusion, as well as in individuals with different Angle classifications on the left and right sides. Males exhibited higher functional occlusion values compared to females, with a statistically significant difference noted in protrusive movement measurements. Furthermore, these values were greater during the permanent dentition phase than in the mixed dentition phase, with a statistically significant difference observed during left laterotrusion. An increased horizontal overbite was significantly linked to larger amplitudes of protrusion and laterotrusion. Other orthodontic anomalies such as crossbite and scissor bite did not have any effect on the range of mandibular movements. Conclusions. Functional movements during the permanent dentition period are greater than movements during the mixed dentition period. Males also demonstrate a greater range of these movements compared to females. Angle Class III occlusion is characterized by increased amplitudes of mouth opening and protrusion. |
