NBDHE Dental Hygienist Practice Test 2025 – The All-In-One Guide to Exam Success!

A bilateral cleft lip occurs when there is a failure of fusion between specific structures during fetal development. In the case of a cleft lip, particularly one that occurs on one side (as indicated by "right side"), it primarily involves the maxillary processes and the medial nasal processes. The medial nasal processes are responsible for forming the center of the upper lip and the premaxilla, while the maxillary processes contribute to the sides of the lips and the hard palate.

The cleft results from the incomplete fusion of these two structures, leading to a gap or split in the upper lip. A thorough understanding of embryonic development is essential, as it helps in identifying the specific anatomical areas that are involved in such conditions. This knowledge is crucial for dental hygienists and other healthcare providers when planning appropriate care strategies for patients with cleft conditions.