Indiana University-Purdue University Indianapolis (IUPUI) / This investigation examined the relationship between oral hygiene scores and visual motor integration scores (developmental age) in five- to eleven-year-old children. A total of 128 subjects were given the Beery test of visual motor integration to determine their developmental age. A pre- and post-brushing plaque score was obtained as a measure of each subject's oral hygiene ability. Statistical analysis of the data revealed that chronological age was not a statistically significant predictor of oral hygiene ability, while developmental age as determined by the Beery test was found to be a statistically significant predictor of oral hygiene ability (p < .006).