Mutations affecting development of the external ear might also result from defective neural crest development, a mechanism exemplified by the role of Tcof1/Treacle in Treacher Collins Syndrome (TCS), an autosomal dominant disorder that frequently includes hypoplasia of the facial bones, cleft palate and middle ear defects in addition to malformation of the pinna (Dixon et al., 2007).
Due to insufficient evidence and controlled clinical trials, the treatment efficacy of tissue engineering in alveolar cleft bone defects could not be determined.
Regenerative techniques for alveolar cleft bone reconstruction were divided into cell therapy, growth factor application, and a combination of both cell therapy and growth factor.
Objective: The purpose of this study was to evaluate the outcome of bone grafts in cleft palate patients, thus assessing the amount of bone necessary to facilitate eruption especially in the buccopalatal direction—of the permanent canine into the bone graft.
Moderate evidence for: pubic bone oedema, secondary cleft sign.
The position of the bone in the cleft was described by Alonso et al. [ 25]; in the rhBMP-2 group, most bone was deposited in the supra-apical area of the cleft, whereas in the control group, most bone was seen in the alveolar area.
Computed tomograms showed 34.5% regenerated bone, extending from the cleft walls and bridging the cleft after 4 months in one case and in the other there was 25.6% presentation of bone integrity.
Serial computed tomograms showed the regenerated bone extending from the cleft walls after 3 months and bridging the cleft after 6 months, with 79.1% of the grafted region after 9 months at the time when the canine and lateral incisor in the affected side erupted in the reconstructed alveolar ridge.
The article by Chin et al. [ 22] on BMP-2 was excluded because besides CLAP, facial clefts were reconstructed and because of absence of radiographic quantification of bone in the reconstructed cleft.
This report describes the results of grafting tissue-engineered bone into the alveolar cleft of a 10-year-old boy.
