chapter 1: DEVELOPMENTAL DISTURBANCES OF THE ORAL AND MAXILLOFACIAL REGION.

Chapter 1 of the book "Color Atlas of Clinical Oral Pathology" is presented. It explores several developmental disturbance of the maxillofacial and oral region. Double lip is defined as a linear fold of excess hyperplastic tissues along the lip's mucosal surface. It also describes the cause and symptoms of commissural lip pits. It discusses the occurrence of cleft lip and cleft palate defects.