Abstract:
:In this study, two types of porous zirconia and dense zirconia were used. The flexural strength of non-layered zirconia specimens and those of the layered zirconia specimens with veneering porcelain were examined. Furthermore, the shear bond strength of veneering porcelain to zirconia was examined. The flexural strength of the non-layered specimens was 1,220 MPa for dense zirconia and 220 to 306 MPa for porous zirconia. The flexural strength of the layered specimens was 360 MPa for dense zirconia and 132 to 156 MPa for porous zirconia, when a load was applied to the porcelain side. The shear bond strength of porcelain veneered to dense zirconia was 27.4 MPa and that of porcelain veneered to porous zirconia was 33.6 to 35.1 MPa. This suggests that the veneering porcelain bonded strongly to porous zirconia although porous zirconia has a lower flexural strength than dense zirconia.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Nakamura T,Sugano T,Usami H,Wakabayashi K,Ohnishi H,Sekino T,Yatani Hdoi
10.4012/dmj.2013-191subject
Has Abstractpub_date
2014-01-01 00:00:00pages
220-5issue
2eissn
0287-4547issn
1881-1361pii
DN/JST.JSTAGE/dmj/2013-191journal_volume
33pub_type
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