| Summary: | This thesis was focused on the evaluation of facial morphology and growth changes of the children face from 3 to 6 years based on longitudinal data. Facial growth and shape changes, variability and sexual dimorphism of face were observed based on 3D facial models of 14 girls and 12 boys. The 3D scanning took place annually, there were 85 3D facial models altogether. We used the geometric morphometric methods, more precisely Coherent Point Drift - Dense Correspondance Analysis, Per Vertex T-Test and Principal Component Analysis, to analyse facial models. Superimposed colour-coded maps were used to quantify differences of average shells and shell distance significance maps were used to visualise statically significant differences. The most intensive facial growth changes were seen between 4 and 5 years in girls and between 5 and 6 years in boys. As a result of growth and ageing changes, the orbital, nasal and labial areas and chin were enlarged and forehead and buccal region were expanded. As a result of shape and ageing changes, orbital, nasal and labial areas and chin became more prominent and forehead and buccal region gradually narrowed. The ageing trajectories did not differ in direction in both sexes, but showed slightly more intensive growth and shape changes in girls. From 3 to 6 years it was...
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