An uncommon cleft subtype of unilateral cleft lip and palate

T. Yamanishi, C. Kobayashi, I. Tsujimoto, H. Koizumi, S. Miya, Y. Yokota, R. Okamoto, S. Iida, T. Aikawa, H. Kohara, J. Nishio, M. Kogo

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The finding that the vomer plays a crucial role in maxillary growth suggests that the bilateral cleft configuration of unilateral cleft lip and palate (UCLP), in which the vomer is detached from the non-cleft-side secondary hard palate, negatively influences palatal development, and this hypothesis was tested. Sixty persons with complete UCLP, including those with the vomer detached from (n = 30, b-UCLP) and attached to (n = 30, u-UCLP) the secondary hard palate, were analyzed morphologically, with the use of cast models taken at 10 days, 3 mos, and 12 mos of age. The anterio-posterior palatal length at 12 mos of age in those with b-UCLP was significantly shorter than that in those with u-UCLP, by 8.7% (p < 0.05). In addition, palatal width development in the first year in those with b-UCLP was also significantly retarded. These results suggest that the uncommon bilateral cleft subtype in UCLP should be included in the cleft classification.

Original languageEnglish
Pages (from-to)164-168
Number of pages5
JournalJournal of dental research
Issue number2
Publication statusPublished - Feb 2008
Externally publishedYes


  • Cleft subtype
  • Palatal development
  • UCLP

ASJC Scopus subject areas

  • Dentistry(all)


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