Сімейна серединна розщілина верхньої та нижньої губи

Визначення(English summary)

A rare developmental defect during embryogenesis characterized by incomplete median clefts of both the lower lip (limited to the vermilion, with no muscle involvement) and upper lip (with muscle involvement), double labial frenulum and fusion of the upper gingival and upper labial mucosa (resulting in a shallow upper vestibular fold), in addition to poor dental alignment, and increased interdental distance between the lower and upper median incisors.