Simultaneous cleft lip and palate repair: an experimental study in beagles

Area of Science:

• Craniofacial surgery
• Pediatric plastic surgery
• Animal models in surgical research

Background:

• Cleft lip and palate are common congenital conditions requiring surgical intervention.
• The timing and method of surgical repair may influence long-term craniofacial development.
• Understanding the impact of simultaneous versus staged repair is crucial for optimizing outcomes.

Purpose of the Study:

• To test the hypothesis that simultaneous lip and palate repair causes more severe craniofacial growth aberrations than separate repairs.
• To compare the effects of single-stage versus two-stage surgical repair on facial growth.
• To evaluate the impact of surgical timing on skeletal development in a canine model.

Main Methods:

• Seventy-six purebred beagles were allocated into five groups: unoperated controls, unrepaired controls, lip repair only, palate repair only, and simultaneous lip and palate repair.
• Cephalometric measurements were obtained for all groups.
• Univariate and multivariate statistical analyses, including stepwise multiple regression and discrimination, were employed to assess surgical effects.

Main Results:

• Multivariate analysis revealed that simultaneous lip and palate repair resulted in significantly more severe craniofacial growth aberrations.
• Compared to separate lip or palate repair, the combined procedure showed a greater negative impact on facial skeletal development.
• Specific cephalometric parameters indicated distinct patterns of growth disturbance associated with the surgical approach.

Conclusions:

• Simultaneous surgical repair of the lip and palate leads to more pronounced craniofacial growth disturbances than staged repair.
• The findings suggest that the timing of surgical intervention for cleft deformities is a critical factor in craniofacial development.
• Further research may explore alternative surgical techniques or timing to mitigate these growth aberrations.