Abstract
This retrospective cross-sectional study reviewed adult patients with unrepaired SMCP, OCP and normal control and performed comprehensive skeletal and soft tissue morphological analyses basing on lateral cephalometric radiographs. One way-ANOVA and rank-sum tests detected potential intergroup differences. 32 subjects with unrepaired SMCP, 42 with unrepaired OCP and 28 noncleft normal controls were enrolled. Both the SMCP and OCP groups were significantly different from the normal controls in sagittal maxillary length, jaw relationship, facial profile angle, nasal base and nasal tip prominence, upper lip position, and lower lip protrusion. S–N-A angle in the control group (82.25 ± 2.74°) was significantly greater than in the SMCP (77.96 ± 4.05°, p<0.001) and OCP (78.55 ± 2.93°, p<0.001) groups. Nasolabial angle in the control group (99.18 ± 8.76°) was significantly greater than in the SMCP (91.75 ± 8.93°, p = 0.002) and OCP (93.69 ± 7.24°, p = 0.020) groups. No significant difference was detected between the SMCP and the OCP group in other measurements except upper facial height. Within the limitations of the study it seems that craniofacial growth is impaired in patients with submucous clefts to the same extent as in patients with a conventional cleft palate.
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