Mineralization-defects are comparable in fluorotic impacted human teeth and fluorotic mouse incisors

Rozita Jalali, Samaneh Ghazanfari, Franck Guy, Don Lyaruu, Leo van Ruijve, Pamela DenBesten, Stefania Martignon, Gina Castiblanco, Antonius Bronckers

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Objective: Fluoride excess of 0.05-0.07 mg F/kg bw/day in water or food additives like salt is the principal cause of endemic dental fluorosis. How fluoride causes these defects is not clear yet. Recent studies in rodents suggest that development of enamel fluorosis is associated with insufficient neutralization of protons released during the formation of hypermineralized lines.

Design: Here we examined whether hypermineralization could also be assessed by MicroCT in developing molar enamel of humans exposed to fluoride.

Result Micro-CT analysis of hypomineralized enamel from human fluorotic molars graded by the Thylstrup Fejerskov(TF) Index as showed weak hypermineralized lines and hypermineralized patches not seen in TF-I/II grade enamel. The mesio-distal sides of these molar teeth were significantly smaller (similar to 18%, p = 0.02) than in TF-I/II teeth.

Conclusion: The patterns of changes observed in human fluorotic teeth were similar to those in fluorotic rodent incisors. The data are consistent with the hypothesis that also in developing human teeth fluoride-stimulated local acidification of enamel could be a mechanism for developing fluorotic enamel.

Original languageEnglish
Pages (from-to)214-221
Number of pages8
JournalArchives of Oral Biology
Volume83
DOIs
Publication statusPublished - Nov 2017

Keywords

  • AMELOBLASTS
  • AMELOGENESIS
  • DENTAL FLUOROSIS
  • Dental fluorosis
  • ENAMEL FLUOROSIS
  • EXPOSURE
  • Enamel development
  • FLUORIDE
  • Hypermineralization
  • Hypomineralization
  • MODULATION
  • ORGAN-CULTURE
  • RAT INCISORS
  • SECRETORY-STAGE

Cite this

Jalali, R., Ghazanfari, S., Guy, F., Lyaruu, D., van Ruijve, L., DenBesten, P., Martignon, S., Castiblanco, G., & Bronckers, A. (2017). Mineralization-defects are comparable in fluorotic impacted human teeth and fluorotic mouse incisors. Archives of Oral Biology, 83, 214-221. https://doi.org/10.1016/j.archoralbio.2017.07.018