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The Galvayne's groove appears at the gum margin of the upper corner incisor at about 10 years of age, extends halfway down the tooth at 15 years, and reaches the wearing surface at 20 years. The groove then begins to disappear at the gum and will completely vanish after 30 years of age.
Originated from the American Youth Horse Council's
Horse Industry Handbook
The umbrella organization providing leadership and resources for the youth horse industry.
1-800-TRY-AYHC
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