Objective: Compare the palatal volume in children with unilateral cleft lip and palate before and after two surgical protocols. Material and Methods: Retrospective data collection was performed in a specialized hospital. The sample comprised 120 digitized dental models divided into, Group 1 (G1) -participants submitted to cheiloplasty at 3 months (Millard technique) and one-step palatoplasty at 12 months (von Langenbeck technique); Group 2 (G2) -participants submitted to cheiloplasty (Millard technique) and hard palate closure (Hans Pichler technique) at 3 months and soft palate closure at 12 months (Sommerlad technique). The dental models were evaluated at Time 1 (T1): before primary plastic surgeries, Time 2 (T2): 1st post-surgical phase, and Time 3 (T3): 2nd post-surgical phase. The volume was measured through stereophotogrammetry system software. Parametric and non-parametric statistical tests were applied (α=5%). Results: The intragroup analysis revealed that G1 had a statistically significant increase in volume at T2 followed by a reduction at T3 (p=0.003); G2 showed a statistically significant increase of dental arch volume between T1 and T2 (p=0.001). There was no statistically significant difference in the intergroup and gender analyses (p>0.05). Conclusion: The surgical protocol influenced the palatal volume of children with unilateral cleft lip and palate. This study suggested that two-step palatoplasty protocol has a tendency to be more appropriate.

Evaluation of palatal volume in children with cleft lip and palate: a comparison of two surgical protocols Avaliação do Volume dos arcos dentários de crianças com fissura labiopalatina operadas por dois protocolos cirúrgicos BAURU 2021 2 AMANDA RIBEIRO HOMEM ALCARDE Evaluation of palatal volume in children with cleft lip and palate: a comparison of two surgical protocols Avaliação do volume dos arcos dentários de crianças com fissura labiopalatina operadas por dois protocolos cirúrgicos Dissertação constituída por artigo