6533b859fe1ef96bd12b82b7

RESEARCH PRODUCT

Evidence of noncentrosymmetry of human tooth hydroxyapatite crystals

Ute KolbEnrico MugnaioliJosé Reyes-gasgaEtienne F. BrèsJoseph Hemmerlé

subject

AdultMaleatomic structuresCatalysisX-Ray DiffractionHuman toothmedicineHydroxidesHumansDental Enamelatomic structures; biomineralization; human tooth crystals; noncentrosymmetry; piezoelectricityEnamel paintpiezoelectricityChemistryOrganic ChemistrySpectrometry X-Ray EmissionGeneral Chemistrybiomineralizationnoncentrosymmetrystomatognathic diseasesCrystallographymedicine.anatomical_structureDurapatiteElectron diffractionvisual_artDentinvisual_art.visual_art_mediumNanoparticleshuman tooth crystalsFemaleMirror plane

description

Herein, we investigate human single hydroxyapatite crystals (enamel and dentine) by convergent-beam electron diffraction (CBED) and automated electron-diffraction tomography (ADT). The CBED pattern shows the absence of the mirror plane perpendicular to the c axis leading to the P63 space group instead of the P63 /m space group considered for larger-scale crystals, this is confirmed by ADT. This experimental evidence is of prime importance for understanding the morphogenesis and the architectural organization of calcified tissues.

yearjournalcountryeditionlanguage
2014-01-01
10.1002/chem.201402275http://hdl.handle.net/11365/841845