Influence of cementation and cement type on the fracture load testing methodology of anterior crowns made of different materials.
To evaluate the influence of cementation on fracture load of anterior crowns made of CAD/CAM-resin-blocks (ART), leucite-reinforced glass-ceramics (LRG), lithium disilicate ceramics (LIT), veneered zirconia (ZRO) and veneered alloy (DEG). Each crown group (n=15/subgroup) was cemented on the metal abutment as follows: i. using glass ionomer, ii. using self-adhesive resin cement, and iii. not cemented. Crowns were tested and analyzed with 2-way and 1-way ANOVA (Scheffé test), and Weibull statistics (p<0.05). Within LRG, self-adhesive cemented subgroup showed higher fracture load compared to other groups (p<0.001). Among DEG, lower results were measured for non-cemented crowns than for cemented (p<0.001). For ART, LIT and ZRO no influence of cementation was observed. For fracture load test methodology, metal ceramic crowns should be generally cemented. Glass-ceramic crowns should be cemented using adhesive cement. Cementation and cement type did not have an influence on the fracture load results for resin, zirconia or lithium disilicate crowns.
Department of Prosthodontics, Munich Dental School, Ludwig-Maximilians University Munich.
Bogna
B
Stawarczyk
Florian
F
Beuer
Andreas
A
Ender
Malgorzata
M
Roos
Daniel
D
Edelhoff
Timea
T
Wimmer
D002484:Cementation; D003442:Crowns; D003738:Dental Cements / Q000737:chemistry* / Q000145:classification; D006801:Humans; D008422:Materials Testing; D014082:Tooth Fractures
D003738:Dental Cements