Primary failure of eruption: Clinical and genetic findings in the mixed dentition

Cristina Grippaudo, Concetta Cafiero, Isabella D'Apolito, Beatrice Ricci, Sylvia A. Frazier-Bowers

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

7 Citazioni (Scopus)


ABSTRACT Objective: To test the hypothesis that mutations in the parathyroid hormone 1 receptor (PTH1R) include effects in both primary and permanent teeth. Materials and Methods: DNA was extracted from saliva samples of 29 patients (8 familial and 21 sporadic) who presented with clinical evidence of infraoccluded teeth, and their unaffected relatives (N ¼ 22). Sequencing followed by mutational analysis of the coding regions of PTH1R gene was completed for all individuals (N ¼ 29). Results: Eight of 29 cases revealed a heterozygous pathogenic variant in the PTH1R gene; five of eight variants represented distinct mutations based on comparison with the dbSNP, HGMD, and ESP databases. One mutation (c.1765 T.C p.Trp89Arg) was found to segregate within a family (n ¼3). In silico analyses for all variants revealed a putative pathogenic effect. A genotype-phenotype correlation was reported as defined by a functional mutation in PTH1R and corresponding effects on one or more posterior teeth only; unilateral or bilateral involvement, infraoccluded primary teeth. Conclusions: Novel mutations were reported in the PTH1R gene that included PFE-affected primary molars, thus providing the basis for using a genetic diagnostic tool for early diagnosis leading to proper management.
Lingua originaleEnglish
pagine (da-a)275-282
Numero di pagine8
RivistaAngle Orthodontist
Stato di pubblicazionePubblicato - 2018


  • PTH1R
  • Primary failure of eruption (PFE)


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