Effect of cementation technique on fracture resistance of glass-ceramic material

Main Article Content

Kwanwong Boonpitak
Bundhit Jirajariyavej
Chuchai Anunmana

Abstract

Objective: To evaluate the effect of cementation technique on the fracture resistance of glass-ceramic materials.


Methods: Sixty third molar teeth were collected (n=15). The tooth surface was prepared by cutting on occlusal table to obtain 5 mm x 5 mm of dentin surface, and the tooth was fixed in acrylic resin cylinder. Sixty (n=15) 4 mm x 4 mm x 2 mm zirconia-reinforced lithium silicate (Celta Duo, DeguDent) plates were made. The ceramic bonding surface was etched with 5% hydrofluoric acid (HF; IPS Ceramic Etching Gel 5%, Ivoclar Vivadent, Schaan, Liechtenstein) and coated with single bond universal adhesive (3M ESPE). For group 1, 2 and 3, the prepared ceramics were cemented with self-adhesive resin cement (RelyXTM Unicem, 3M ESPE) on tooth surfaces using three techniques, untreated, self-etch bonding, and etch and rinse bonding techniques, respectively. For group 4 (Control group), unprepared ceramics were cemented with zinc phosphate cement (S.S. White group) on untreated tooth surfaces. The specimens were tested under compression with a 5 mm steel ball using a universal testing machine. The maximum failure load was recorded in newton. Fracture surfaces were examined under a scanning electron microscope to determine the origin and the fracture pattern. The data were analyzed using one-way analysis of variance (ANOVA), and Tukey’s HSD test.


Result: The mean fracture load of group 1, 2, 3, and 4 were 1698 ± 126 N, 1760 ± 231 N, 1842 ± 172 N and 1018 ± 151 N, respectively. Fracture load of group 4 was significantly lower than that of the other groups (p < 0.01). However, there was no significant difference between other groups.


Conclusion: The use of self-adhesive resin cement showed higher fracture load than zinc phosphate cement. The cementation techniques with self-adhesive resin cement exhibited negligible effect to the fracture resistance. 

Article Details

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1.
Boonpitak K, Jirajariyavej B, Anunmana C. Effect of cementation technique on fracture resistance of glass-ceramic material. M Dent J [Internet]. 2020 Nov. 12 [cited 2024 Jun. 16];40(3):211-20. Available from: https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/242122
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Original articles

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