Early postnatal development of the mandibular permanent first molar in infants with isolated cleft palate

  1. NUNO V. HERMANN1,
  2. MOSTAFA ZARGHAM2,
  3. TRON A. DARVANN3,
  4. IB J. CHRISTENSEN1,
  5. SVEN KREIBORG1,4

Article first published online: 30 OCT 2011

DOI: 10.1111/j.1365-263X.2011.01193.x

Issue

International Journal of Paediatric Dentistry

International Journal of Paediatric Dentistry

Volume 22, Issue 4, pages 280–285, July 2012

Additional Information

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

Author Information

  1. 1

    Department of Pediatric Dentistry and Clinical Genetics, School of Dentistry, Faculty of Health Sciences, University of Copenhagen, Denmark

  2. 2

    Department of Orthodontics, School of Dentistry, Faculty of Health Sciences, University of Copenhagen, Denmark

  3. 3

    3D Craniofacial Image Research Laboratory (School of Dentistry, University of Copenhagen; Copenhagen University Hospital Rigshospitalet; and DTU Informatics, Technical University of Denmark), Copenhagen, Denmark

  4. 4

    Department of Clinical Genetics, The Juliane Marie Centre, Copenhagen University Hospital, Copenhagen, Denmark

*N. V. Hermann, D.D.S., Ph.D., Associate Professor, Department of Pediatric Dentistry and Clinical Genetics, School of Dentistry, University of Copenhagen, Nørre Allé 20, DK 2200 Copenhagen N, Denmark. E-mail: nuno@sund.ku.dk

  1. 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.

Publication History

  1. Issue published online: 4 JUN 2012
  2. Article first published online: 30 OCT 2011

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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.

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