Final answer:
Cleft lip is typically repaired at 4-6 months of age, during which infancy health and facial growth stages favor a successful surgery, and in consideration of speech development and social interaction.
Step-by-step explanation:
Cleft lip is typically repaired at the age of 4-6 months. This timing takes into consideration several factors such as the infant's health and preparedness for surgery, and the stages of facial growth. Repairing a cleft lip within this time frame not only allows for better healing but also coincides with important developmental milestones. It's important to perform the surgery early so that the child's speech development is not adversely affected and social interactions are less impacted as they grow. The procedure to correct a cleft lip is called cheiloplasty, and it is a carefully timed surgical process to ensure the best possible outcome for the child.