Oro-dental and cranio-facial characteristics of osteogenesis imperfecta type V

Eur J Med Genet. 2019 Dec;62(12):103606. doi: 10.1016/j.ejmg.2018.12.011. Epub 2018 Dec 26.


Osteogenesis imperfecta (OI) type V is an ultrarare heritable bone disorder caused by the heterozygous c.-14C > T mutation in IFITM5. The oro-dental and craniofacial phenotype has not been described in detail, which we therefore undertook to evaluate in a multicenter study (Brittle Bone Disease Consortium). Fourteen individuals with OI type V (age 3-50 years; 10 females, 4 males) underwent dental and craniofacial assessment. None of the individuals had dentinogenesis imperfecta. Six of the 9 study participants (66%) for whom panoramic radiographs were obtained had at least one missing tooth (range 1-9). Class II molar occlusion was present in 8 (57%) of the 14 study participants. The facial profile was retrusive and lower face height was decreased in 8 (57%) individuals. Cephalometry, performed in three study participants, revealed a severely retrusive maxilla and mandible, and moderately to severly retroclined incisors in a 14-year old girl, a protrusive maxilla and a retrusive mandible in a 14-year old boy. Cone beam computed tomograpy scans were obtained from two study participants and demonstrated intervertebral disc calcification at the C2-C3 level in one individual. Our study observed that OI type V is associated with missing permanent teeth, especially permanent premolar, but not with dentinogenesis imperfecta. The pattern of craniofacial abnormalities in OI type V thus differs from that in other severe OI types, such as OI type III and IV, and could be described as a bimaxillary retrusive malocclusion with reduced lower face height and multiple missing teeth.

Keywords: Craniofacial; Dental; Fractures; IFITM5; Oligodontia; Osteogenesis imperfecta.

MeSH terms

  • Adolescent
  • Adult
  • Child
  • Child, Preschool
  • Female
  • Humans
  • Male
  • Middle Aged
  • Osteogenesis Imperfecta / diagnostic imaging
  • Osteogenesis Imperfecta / genetics
  • Osteogenesis Imperfecta / pathology*
  • Phenotype*

Supplementary concepts

  • Osteogenesis Imperfecta, Type V