In vitro investigation of human enamel wear by dental porcelain.
Vickers hardness
Wear
human enamel
porcelain
surface roughness
Journal
Bio-medical materials and engineering
ISSN: 1878-3619
Titre abrégé: Biomed Mater Eng
Pays: Netherlands
ID NLM: 9104021
Informations de publication
Date de publication:
2019
2019
Historique:
pubmed:
3
9
2019
medline:
15
2
2020
entrez:
3
9
2019
Statut:
ppublish
Résumé
Ceramic crown that fires the layering porcelain on zirconia corping is starting to be used due to aesthetic requirements. However, many ceramics are used, but wear characteristics are often unknown. This study was performed to investigate the wear of human enamel by porcelains, and to determine the influence of porcelain hardness, surface roughness and crystal of porcelain on the enamel wear. Enamel specimens were prepared from extracted human molar teeth. Porcelain specimens were prepared from Deguceram Gold, Vita Omega 900, and Cercon Ceram Kiss. Enamel wear volume was calculated and the porcelain wear depth, surface roughness and Vickers hardness was measured. Moreover, the observation of a crystal by scanning electron microscope and the crystal by X-ray diffraction were identified. Omega 900 showed the smallest enamel wear volume and porcelain wear depth. The Vickers hardnesses of Omega 900 and Cercon Ceram Kiss were almost identical. Leucite was detected from Deguceram Gold and Omega 900, and Silica and Silicon Nitride were detected from Cercon Ceram Kiss. The enamel wear is influenced not by the hardness of the porcelain but by the surface roughness, the size and shape of the crystal.
Sections du résumé
BACKGROUND
BACKGROUND
Ceramic crown that fires the layering porcelain on zirconia corping is starting to be used due to aesthetic requirements. However, many ceramics are used, but wear characteristics are often unknown.
OBJECTIVE
OBJECTIVE
This study was performed to investigate the wear of human enamel by porcelains, and to determine the influence of porcelain hardness, surface roughness and crystal of porcelain on the enamel wear.
METHODS
METHODS
Enamel specimens were prepared from extracted human molar teeth. Porcelain specimens were prepared from Deguceram Gold, Vita Omega 900, and Cercon Ceram Kiss. Enamel wear volume was calculated and the porcelain wear depth, surface roughness and Vickers hardness was measured. Moreover, the observation of a crystal by scanning electron microscope and the crystal by X-ray diffraction were identified.
RESULTS
RESULTS
Omega 900 showed the smallest enamel wear volume and porcelain wear depth. The Vickers hardnesses of Omega 900 and Cercon Ceram Kiss were almost identical. Leucite was detected from Deguceram Gold and Omega 900, and Silica and Silicon Nitride were detected from Cercon Ceram Kiss.
CONCLUSIONS
CONCLUSIONS
The enamel wear is influenced not by the hardness of the porcelain but by the surface roughness, the size and shape of the crystal.
Identifiants
pubmed: 31476141
pii: BME191059
doi: 10.3233/BME-191059
doi:
Substances chimiques
vita omega
0
Dental Porcelain
12001-21-7
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM