Objective: Analysis of maxillary dental-arch development in adult unoperated cleft palate patients.
Methods: Dental casts was studied in 20 cases of adult unoperated cleft palate (UCP) patients, and 20 cases of normal adults were as a control group.
Results: The UCP group showed smaller dental-arch widths than a control group in the canine region (P < 0.05) and these was no significant difference on upper-arch depth and posterior dental arch widths between the UCP group and a control group (P > 0.05).
Conclusion: In the UCP group major deformity were in incisor and canine region, and smaller interfere to posterior dental-arch widths and depth. Operation for cleft lip can interfere maxillary dental-arch development.