PTH1R and primary failure of tooth eruption: We found significant association regarding root dilaceration and the absence of PFE, although this result is different from that reported in the literature, our results found an association between root dilaceration and the absence of PFE different to what was described by Grippaudo et al. (14) who stated that root dilacerations in molars with PFE are very rare and are not discriminative for PFE-related PTH1R mutations.