Tooth size, arch length and arch relationship in Egyptian and Saudi Arabian preschool children

ABSTRACT

The purpose of this study was to compare the tooth size, arch length and arch relationship in Egyptian and Saudi preschool children. Measurements were taken from study casts of 120 Egyptian and Saudi preschool children. Statistical analysis revealed that the mesiodistal tooth width of Saudi was larger than Egyptian children but with no significant difference except at the canine region of both maxillary and mandibular teeth. Teeth of boys were insignificantly larger than girls both in Egyptian and Saudi children. Arch length of both Egyptian and Saudi boys was significantly larger than that of girls, whereas Saudi children have significantly larger arch than Egyptian children. No significant difference was detected as regard arch relationship. Authors concluded that sex may influence crown diameter, arch length and arch relationship but within the same race such differences were not evident