Dentoalveolar growth inhibition induced by bone denudation on palates: a study of two isolated cleft palates with asymmetric scar tissue distribution.
OBJECTIVE
This report presents two cases of isolated cleft palate with asymmetric distribution of postsurgical scar tissue determined by laser Doppler flowmetry. To determine the effect of mucoperiosteal denudation of the bone on maxillary alveolar growth, the analysis of dentoalveolar structures compared the affected side to the unaffected side of each case.


METHODS
Two Japanese girls with isolated cleft palates were examined. Both subjects had undergone pushback operations (a modified version of the procedure of Wardill) for palatal repair at 18 months of age. Palatal blood flow was examined by laser Doppler flowmetry when the girls were 12 years old to determine the extent of postsurgical scar tissue over the denuded bone. To analyze the maxillary dentoalveolar structures three dimensionally, the whole surface of the upper dental cast was measured and recorded by an optical measuring device when the girls were 7 years old.


CONCLUSIONS
Analysis via flowmetry showed that the palatal scar tissue area was limited to the anterior tooth region on the right (unaffected) side but extended posteriorly to the premolar region on the left (affected) side in both subjects. The two girls had similar dentoalveolar structures, with the dental and alveolar arches deflected lingually at the deciduous molar area on the affected side. There were no differences in the buccolingual inclination of deciduous molars or in the vertical growth of the alveolar processes between the affected and unaffected sides. In both girls, bone denudation in the premolar region appeared to result in less than 3 mm of displacement of the teeth palatally, with no change in lingual inclination. Any effects of scar tissue on the vertical development of the alveolus were not substantiated.
Ishikawa
H
H
Department of Orthodontics, School of Dentistry, Hokkaido University, Sapporo, Japan.
Iwasaki
H
H
Tsukada
H
H
Chu
S
S
Nakamura
S
S
Yamamoto
K
K
D000539:Alveolar Process / Q000254:growth & development* / Q000601:surgery; D002648:Child; D002921:Cicatrix / Q000503:physiopathology*; D002972:Cleft Palate / Q000503:physiopathology* / Q000601:surgery; D005260:Female; D006801:Humans; D017078:Laser-Doppler Flowmetry; D008437:Maxilla / Q000601:surgery; D003765:Models, Dental; D009061:Mouth Mucosa / Q000601:surgery; D010159:Palate / Q000098:blood supply* / Q000601:surgery; D010521:Periosteum / Q000601:surgery; D012039:Regional Blood Flow