Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Fracture resistance of co… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Fracture resistance of computer-aided design/computer-aided manufacturing generated composite resin-based molar crowns

Artikel i vetenskaplig tidskrift
Författare A. Harada
K. Nakamura
T. Kanno
R. Inagaki
Ulf Örtengren
Y. Niwano
K. Sasaki
H. Egusa
Publicerad i European Journal of Oral Sciences
Volym 123
Nummer/häfte 2
Sidor 122-129
ISSN 0909-8836
Publiceringsår 2015
Publicerad vid Institutionen för odontologi, sektion 3
Sidor 122-129
Språk en
Länkar dx.doi.org/10.1111/eos.12173
Ämnesord CAD/CAM, composite resin, fracture resistance, lithium disilicate, micro-CT, FREE POLYMER CROWNS, DENTAL CASTING ALLOYS, BITE FORCE, MARGINAL, ADAPTATION, CERAMIC CROWNS, FRACTOGRAPHIC ANALYSES, FLEXURAL STRENGTH, SINGLE CROWNS, IN-VITRO, POROSITY, Dentistry, Oral Surgery & Medicine
Ämneskategorier Kirurgisk forskning

Sammanfattning

The aim of this study was to investigate whether different fabrication processes, such as the computer-aided design/computer-aided manufacturing (CAD/CAM) system or the manual build-up technique, affect the fracture resistance of composite resin-based crowns. Lava Ultimate (LU), Estenia C&B (EC&B), and lithium disilicate glass-ceramic IPS e.max press (EMP) were used. Four types of molar crowns were fabricated: CAD/CAM-generated composite resin-based crowns (LU crowns); manually built-up monolayer composite resin-based crowns (EC&B-monolayer crowns); manually built-up layered composite resin-based crowns (EC&B-layered crowns); and EMP crowns. Each type of crown was cemented to dies and the fracture resistance was tested. EC&B-layered crowns showed significantly lower fracture resistance compared with LU and EMP crowns, although there was no significant difference in flexural strength or fracture toughness between LU and EC&B materials. Micro-computed tomography and fractographic analysis showed that decreased strength probably resulted from internal voids in the EC&B-layered crowns introduced by the layering process. There was no significant difference in fracture resistance among LU, EC&B-monolayer, and EMP crowns. Both types of composite resin-based crowns showed fracture loads of >2000N, which is higher than the molar bite force. Therefore, CAD/CAM-generated crowns, without internal defects, may be applied to molar regions with sufficient fracture resistance.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?