UNASSIGNED: Anterior maxillary segmental distraction (AMSD) is an effective surgical procedure in the treatment of @entity3573 secondary to @entity3384 . Its unique advantage of preserving velopharyngeal function makes this procedure widely applied. In this study, the application of AMSD was described and its long-term stability was explored. Eight @entity1 with severe @entity3573 secondary to @entity23350 were included in this study. They were treated with AMSD using @entity2003 ( @entity2003 ) device. Cephalometric analysis was performed twice at three time points for evaluation: before surgery (T1), after distraction (T2), and 2 years after treatment (T3). One-way analysis of variance was used to assess the differences statistically. All the distractions completed smoothly, and maxilla was distracted efficiently. The value of SNA, NA-FH, Ptm-A, U1-PP, overjet and PP (ANS-PNS) increased significantly after the AMSD procedure (P < 0.05), with the mean overjet increased by 14.28 mm. However, comparison of cephalometric analysis between T2 and T3 showed no significant difference (P > 0.05). Changes of @entity1739 and soft palatal length were insignificant. AMSD with @entity2003 device provided an effective way to correct @entity3573 secondary to @entity23350 , extended the palatal and arch length, avoided damage on velopharyngeal closure function and reduced the relapse rate. It is a promising and valuable technique in this potentially complicated procedure.

Anterior maxillary segmental distraction in the treatment of severe XXXX secondary to @entity3384 .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity23350 :: ('810', 'Gene') :: ['CLP'] @entity2003 :: ('MESH:D009127', 'Disease') :: ['RED', 'rigid external distraction'] @entity1739 :: ('MESH:D014681', 'Disease') :: ['palatopharyngeal depth'] @entity3573 :: ('MESH:D008439', 'Disease') :: ['maxillary hypoplasia'] @entity3384 :: ('MESH:D002971', 'Disease') :: ['cleft lip and palate']
@entity3573 :: (MESH:D008439,Disease) :: ['maxillary hypoplasia']
