Design and processing of ceramic-based analogs to the dental crown

L. F. Francis, K. J. Vaidya, H. Y. Huang, W. D. Wolf

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The structure and properties of the crown of a human tooth were used as a model for the design and processing of dental restorative materials. The synthetic analog to the crown was composed of a dentin-like material (alumina-glass or alumina-polymer composite) and an enamel-like material (calcium phosphate-based coating). The dentin composites had high strength (~450 MPa and ~160 MPa for aluminaglass and alumina-PMMA composites, respectively) and good fracture toughness (~3.8 MPa m 1 2 and ~3.3 MPa m 1 2 for alumina-glass and alumina-PMMA composites, respectively). The calcium phosphate-based enamel region was roughly 80 μm thick, dense and fully crystalline. Bonding between the dentin and enamel in the analog was accomplished in a manner similar to the dentinoenamel junction in the natural tooth. A region of interpentrating phases from the synthetic dentin and enamel coating was created and excellent bonding was achieved using a eutectic melt in the CaO-Al2O3-SiO2 system.

Original languageEnglish (US)
Pages (from-to)63-74
Number of pages12
JournalMaterials Science and Engineering C
Volume3
Issue number2
DOIs
StatePublished - Nov 1995

Keywords

  • Alumina-polymer composite
  • CaO-AlO-SiO system
  • Crystalline microstructure
  • Dentinoenamel junction
  • Tooth crown

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