Fracture Toughness Testing of Dental Restoratives: a Critical Evaluation

Belli, Renan; Zorzin, J.; Lohbauer, Ulrich

doi:10.1007/s40496-018-0184-0

Cited by 8 publications

(1 citation statement)

References 40 publications

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“…The use of an interfacial method such as mini-iFT is suitable for small CAD/CAM block specimens, especially to evaluate the interface properties with high discriminative power. Despite that, there has been some criticism regarding the testing method 37,38) , as high mini-iFT values are often seen, whereas other test methods present different fracture toughness values for the same material 39) . Nevertheless, based on our knowledge, this mini-iFT was the most suitable approach to investigate the present hypotheses, although the mini-iFT values remain to be further validated.…”

Section: Discussionmentioning

confidence: 99%

Interfacial fracture toughness of different surface treatments on zirconia-reinforced lithium silicate glass-ceramics

TANG,

SUPUTTAMONGKOL,

HARNIRATTISAI

et al. 2023

Dent. Mater. J.

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This study investigated the influence of different surface treatments on unfiring or firing zirconia-reinforced lithium silicate (ZLS) glass-ceramics. Celtra Duo and IPS e.max CAD blocks were cut and process following manufacturer protocols. The specimen surface was treated with seven different protocols. Two ceramic blocks with the same surface treatment were bonded with luting agent and prepared for mini-interfacial fracture toughness tests (mini-iFT). The specimens were tested after 1-week storage. The data was statistically analyzed using two-way ANOVA and Dunnett's T3 comparison (α=0.05). The highest mini-iFT of both Celtra Duo unfired and fired was shown in the HF+S group, which was not significantly different from HF+S+UA. For IPS e.max CAD, the mini-iFT was higher in the groups treated with hydrofluoric acid. Additional adhesive after silane application did not significantly improve bonding effectiveness. Therefore, surface treatment with hydrofluoric acid and silane is recommended for both unfiring and firing ZLS glass ceramics.

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Section: Discussionmentioning

confidence: 99%