Poster presentation: Part of this work has been presented at the European Orthodontic Society Meeting 2008 (EOS 2008), as a poster with the title: Development of M1inf in children with isolated cleft palate.
Early postnatal development of the mandibular permanent first molar in infants with isolated cleft palate
Article first published online: 30 OCT 2011
© 2011 The Authors. International Journal of Paediatric Dentistry © 2011 BSPD, IAPD and Blackwell Publishing Ltd
International Journal of Paediatric Dentistry
Volume 22, Issue 4, pages 280–285, July 2012
How to Cite
HERMANN, N. V., ZARGHAM, M., DARVANN, T. A., CHRISTENSEN, I. J. and KREIBORG, S. (2012), Early postnatal development of the mandibular permanent first molar in infants with isolated cleft palate. International Journal of Paediatric Dentistry, 22: 280–285. doi: 10.1111/j.1365-263X.2011.01193.x
- Issue published online: 4 JUN 2012
- Article first published online: 30 OCT 2011
International Journal of Paediatric Dentistry 2012; 22: 280–285
Background. Based on measurements on dental casts, smaller permanent teeth in children with cleft palate have previously been reported in the literature; however, the early maturation of teeth and the size of the follicles and crowns have not been investigated.
Hypothesis. The maturation of the mandibular permanent first molar (M1inf) is delayed, and the mesiodistal diameters of the follicle and crown of M1inf, respectively, are reduced in children with isolated cleft palate (ICP).
Design. Retrospective, longitudinal. Cephalometric X-rays were available for 2 and 22 months old children with clefts (64 children with ICP, and a control group of 38 children with unilateral incomplete cleft lip). The width of the follicle and the crown of M1inf, and the maturation of M1inf were assessed. Intra-observer error was acceptable.
Results. M1inf maturation was delayed in children with ICP at both 2 and 22 months of age. The mesiodistal diameter of the crown of M1inf in the ICP group was reduced. Thus, the two hypotheses could not be refuted.
Conclusions. Children with ICP showed smaller dimensions of the M1inf, and in addition, the maturation of M1inf was delayed.