@article{HUANG2016, 
author = {Hong HUANG and Peng ZHANG and Ri-zhao LI},
title = {Effect of three resin cement on fracture strength of cemented machinable glass ceramic},
year = {2016},
journal = {Journal of Prevention and Treatment for Stomatological Diseases},
volume = {24},
number = {6},
pages = {341-344},
keywords = {Isolated tooth, Fracture strength, Machinable glass ceramic, Resin cement, Thermal cycling},
url = {https://www.sciopen.com/article/10.12016/j.issn.2096-1456.2016.06.005},
doi = {10.12016/j.issn.2096-1456.2016.06.005},
abstract = {ObjectiveTo evaluate the effect of three different resin cement on fracture strength of cemented machinable IPS e.max CAD specimens and provide guides for clinical luting procedure.MethodsSixty human molars were collected, and occlusal enamel were removed; IPS e. max CAD blocks were processed into plate-shape and etched with 9.5% hydrofluoric acid. All specimens were randomly divided into three groups (n = 20) and received there different luting treatments, (group A: Multilink® N+ Monobonds-S, group B: RelyXTM Ultimate+ ScotchbondTM adhesive, group C: RelyXTM Unicem 2). Then each group were divided into two sub-groups (group 1: the control group, group 2 received thermal cycling). Fracture load was measured with a universal testing machine. The results were analyzed by two-way ANOVA and LSD test.ResultsFracture load of each group were A1(1763 ± 128)N、A2(1563 ± 115)N、B1(1861 ±135)N、B2(1676 ± 137)N、C1(1446 ± 153)N、C2(1038 ± 95)N. Significant differences of fracture load were observed among all groups (F = 52.279, P＜0.001). Resin cement (F = 94.104, P＜0.001) and thermal cycling (F = 63.818, P＜0.001) affected the fracture load significantly. LSD test showed that significant differences of fracture load were observed among group A, B and C (P＜0.05). Group B illustrated the highest fracture load where as group C demonstrated the lowest one.ConclusionResin cement that treats the ceramic and dentin surface simultaneously will strengthen the fracture load of the glass ceramic. Thermal cycling will reduce the fracture strength of cemented glass ceramic.}
}