Gingival recession in the lower incisor region of 15-year-old subjects.

A sample of 1,003 children, aged 15 years, were examined for prevalence of gingival recession. It was found that 17% had pseudo gingival recession and 1% had true recession. The highest degree of association with local etiological factors was that between recession and the width of keratinized gingiva; frenal pull was the second most highly associated factor followed by tooth arch relationship and the least association existed between plaque and gingival recession. There was no association between calculus and recession.