[Analysis of primary teeth crown dimensions and dental arch physiological data of individual normal occlusion children in 67 children of 3.5-4.5 years of age].

Primary tooth crowns of individual normal occlusion children demonstrate strong bilateral symmetry in homologous teeth. Most primary molars exhibit gender differences in buccolingual and occlusogingival dimensions, with larger values in boys. Arch dimensions (length and width) are consistently larger in boys.