[Comparative research of craniofacial structural characteristics of syndromic and non-syndromic patients with cleft palate].
OBJECTIVE
To compare craniofacial structural characteristic of syndromic and non-syndromic patients with cleft palate and to probe into the reason of their maxillary hypoplasia and to lay a foundation for better treatment protocol for syndromic patients with cleft palate.


METHODS
The sample consisted of 8 individuals with Treacher Collin syndrome, 9 patients with Pierre Robin syndrome, and 40 patients with non-syndromic cleft palate which met certain criterions. Lateral cephalometric radiographs were obtained from each study subject. A total of 18 variables, comprising 9 angular, 7 linear, and 2 ratio measurements, were studied. SPSS 12.0 software was used to describe the statistics data, consisting of means, SD, and t test.


RESULTS
The tendency for smaller value in SNB and larger value in ANB indicate a severer anteroposterior mandibular hypoplasia in the syndromic type cleft. There was no difference between syndromic and non-syndromic cleft palate patients with regards to maxillary anteroposterior development. No significant difference on the development in cranial base area was found either.


CONCLUSIONS
This interplay of cranio-facial bones is very important in the development of this complex, which will not only affect the growth but also the defect development. In this study, the patients with the two syndromes showed the similar growth potential of maxilla with the non-syndromic cleft patients.
Lu
Da-wei
DW
Dept. of Cleft Lip and Palate, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
Shi
Bing
B
Wang
Heng-jian
HJ
Zheng
Guang-ning
GN
Wang
Hu
H
Zheng
Qian
Q
D002508:Cephalometry; D002971:Cleft Lip; D002972:Cleft Palate; D006801:Humans; D008297:Male; D008310:Malocclusion; D008437:Maxilla