title: A 3-year longitudinal study of the position of the gingival margin in man.
abstract: The position of the gingival margin of the incisor and canine teeth, indicated by clinical crown height, was measured using a standardised photographic technique, in 30 dental students over a 3-year period. There was a progressive increase in mean clinical crown height during this period, suggesting that continual passive eruption of the teeth was occurring. There was a significant slowing in the rate of change over the period 1975-1977 for tooth 33, the reason for which is unknown.
mesh_terms: D000293:Adolescent; D003481:Cuspid / Q000033:anatomy & histology*; D005881:Gingiva / Q000033:anatomy & histology*; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology*; D008137:Longitudinal Studies; D014078:Tooth Eruption