PMID: 15348585Sep 7, 2004Paper

Interaction between bioactive glasses and human dentin

Journal of Materials Science. Materials in Medicine
S E EfflandtL F Francis

Abstract

This study explores the interaction between bioactive glasses and dentin from extracted human teeth in simulated oral conditions. Bioactive glasses in the Na(2)O-CaO-P(2)O(5)-SiO(2) and MgO-CaO-P(2)O(5)-SiO(2) systems were prepared as polished disks. Teeth were prepared by grinding to expose dentin and etching with phosphoric acid. A layer of saliva was placed between the two, and the pair was secured with an elastic band and immersed in saliva at 37 degrees C for 5, 21 or 42 days. The bioactive glasses adhered to dentin, while controls showed no such interaction. A continuous interface between the bioactive glass and dentin was imaged using cryogenic-scanning electron microscopy (SEM). However, after alcohol dehydration and critical point drying, fracture occurred due to stresses from dentin shrinkage. SEM investigations showed a microstructurally different material at the fractured interface. Chemical analyses revealed that ions from the glass penetrated into the dentin and that the surface of the glass in contact with the dentin was modified. Microdiffractometry showed the presence of apatite at the interface. Bonding appears to be due to an affinity of collagen for the glass surface and chemical interaction between the dent...Continue Reading

Citations

Sep 14, 2010·European Journal of Oral Sciences·Kazuhiko EndoHiroki Ohno
Aug 21, 2013·Journal of Tissue Engineering and Regenerative Medicine·Bo ZhongFuzhai Cui
Dec 1, 2017·Clinical Oral Investigations·Renata Costa de MoraisFernanda de Carvalho Panzeri Pires-de-Souza
Jan 24, 2017·Dental Materials Journal·Noha A El-Wassefy
Nov 12, 2009·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Masanori Hashimoto
Jul 2, 2020·Dental Materials : Official Publication of the Academy of Dental Materials·Caroline MocquotPierre Colon

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