Restor Dent Endod.  2017 Aug;42(3):206-215. 10.5395/rde.2017.42.3.206.

Effects of air-abrasion pressure on the resin bond strength to zirconia: a combined cyclic loading and thermocycling aging study

• Al-Shehri
• Al-Zain AO
• Sabrah AH
• Al-Angari
• Al Dehailan L
• Eckert GJ
• Özcan M
• Platt JA
• Bottino MC

• KMID: 2386774
• DOI: http://doi.org/10.5395/rde.2017.42.3.206

Abstract

OBJECTIVES
To determine the combined effect of fatigue cyclic loading and thermocycling (CLTC) on the shear bond strength (SBS) of a resin cement to zirconia surfaces that were previously air-abraded with aluminum oxide (Al₂O₃) particles at different pressures.
MATERIALS AND METHODS
Seventy-two cuboid zirconia specimens were prepared and randomly assigned to 3 groups according to the air-abrasion pressures (1, 2, and 2.8 bar), and each group was further divided into 2 groups depending on aging parameters (n = 12). Panavia F 2.0 was placed on pre-conditioned zirconia surfaces, and SBS testing was performed either after 24 hours or 10,000 fatigue cycles (cyclic loading) and 5,000 thermocycles. Non-contact profilometry was used to measure surface roughness. Failure modes were evaluated under optical and scanning electron microscopy. The data were analyzed using 2-way analysis of variance and χ² tests (α = 0.05).
RESULTS
The 2.8 bar group showed significantly higher surface roughness compared to the 1 bar group (p < 0.05). The interaction between pressure and time/cycling was not significant on SBS, and pressure did not have a significant effect either. SBS was significantly higher (p = 0.006) for 24 hours storage compared to CLTC. The 2 bar-CLTC group presented significantly higher percentage of pre-test failure during fatigue compared to the other groups. Mixed-failure mode was more frequent than adhesive failure.
CONCLUSIONS
CLTC significantly decreased the SBS values regardless of the air-abrasion pressure used.

Keyword

Air-abrasion; Bond strength; Fatigue; Panavia F 2.0; Resin cement; Thermocycling

MeSH Terms

Adhesives
Aging*
Aluminum Oxide
Fatigue
Microscopy, Electron, Scanning
Resin Cements
Adhesives
Aluminum Oxide
Resin Cements

Figure

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  Figure 1 Zirconia specimen with resin cement adhered. (A) Zirconia specimen embedded in acrylic resin; (B) Placement of the specimen on the Ultradent jig coupled with the semicircular plastic mold; (C) Zirconia specimen after resin cement button fabrication.

• 

  Figure 2 Fatigue cyclic loading and shear bond strength test apparatus. Fatigue cyclic loading was applied in a shear direction parallel to the adhesive interface using an Ultradent loading jig with a semicircular loading surface (2.4 mm in diameter) in close proximity to the zirconia-resin button interface and subjected to 10 N load for 10,000 cycles with a frequency of 1.0 Hz. (A) Frontal-view of the testing apparatus; (B) A close up for the testing setup.

• 

  Figure 3 Mean surface roughness and standard deviations of different groups after air-abrasion. Control group represents the zirconia surface before air-abrasion treatment. Ra, average surface roughness; 1b, 1 bar; 2b, 2 bar; 2.8b, 2.8 bar. a,bDifferent letters represent significant differences among the air-abrasion pressures tested.

• 

  Figure 4 Scanning electron microscopic images (× 2,000) of zirconia surface for control and after different air-abrasion pressures. (A) Control group (no air-abrasion); (B) 1 bar; (C) 2 bar; (D) 2.8 bar.

• 

  Figure 5 Scanning electron microscopic images of zirconia surface denoting mixed mode of failure after debonding at magnification (A) × 30; (B) × 300.

Reference

1. Lazar DR, Bottino MC, Özcan M, Valandro LF, Amaral R, Ussui V, Bressiani AH. Y-TZP ceramic processing from coprecipitated powders: a comparative study with three commercial dental ceramics. Dent Mater. 2008; 24:1676–1685.

2. Luangruangrong P, Cook NB, Sabrah AH, Hara AT, Bottino MC. Influence of full-contour zirconia surface roughness on wear of glass-ceramics. J Prosthodont. 2014; 23:198–205.

3. Denry I, Kelly JR. Emerging ceramic-based materials for dentistry. J Dent Res. 2014; 93:1235–1242.

4. Lawson NC, Burgess JO. Dental ceramics: a current review. Compend Contin Educ Dent. 2014; 35:161–166.

5. Wang H, Aboushelib MN, Feilzer AJ. Strength influencing variables on CAD/CAM zirconia frameworks. Dent Mater. 2008; 24:633–638.

6. Lohbauer U, Zipperle M, Rischka K, Petschelt A, Müller FA. Hydroxylation of dental zirconia surfaces: characterization and bonding potential. J Biomed Mater Res B Appl Biomater. 2008; 87:461–467.

7. Wegner SM, Kern M. Long-term resin bond strength to zirconia ceramic. J Adhes Dent. 2000; 2:139–147.

8. Blatz MB, Sadan A, Kern M. Resin-ceramic bonding: a review of the literature. J Prosthet Dent. 2003; 89:268–274.

9. Hummel M, Kern M. Durability of the resin bond strength to the alumina ceramic Procera. Dent Mater. 2004; 20:498–508.

10. Friederich R, Kern M. Resin bond strength to densely sintered alumina ceramic. Int J Prosthodont. 2002; 15:333–338.

11. Kern M. Bonding to oxide ceramics—laboratory testing versus clinical outcome. Dent Mater. 2015; 31:8–14.

12. Thompson JY, Stoner BR, Piascik JR, Smith R. Adhesion/cementation to zirconia and other non-silicate ceramics: where are we now? Dent Mater. 2011; 27:71–82.

13. Seo DG. Zirconia surface treatment for successful bonding. Restor Dent Endod. 2014; 39:333.

14. Bottino MA, Bergoli C, Lima EG, Marocho SM, Souza RO, Valandro LF. Bonding of Y-TZP to dentin: effects of Y-TZP surface conditioning, resin cement type, and aging. Oper Dent. 2014; 39:291–300.

15. Inokoshi M, De Munck J, Minakuchi S, Van Meerbeek B. Meta-analysis of bonding effectiveness to zirconia ceramics. J Dent Res. 2014; 93:329–334.

16. de Souza G, Hennig D, Aggarwal A, Tam LE. The use of MDP-based materials for bonding to zirconia. J Prosthet Dent. 2014; 112:895–902.

17. Blatz MB, Sadan A, Martin J, Lang B. In vitro evaluation of shear bond strengths of resin to densely-sintered high-purity zirconium-oxide ceramic after long-term storage and thermal cycling. J Prosthet Dent. 2004; 91:356–362.

18. Özcan M, Bernasconi M. Adhesion to zirconia used for dental restorations: a systematic review and meta-analysis. J Adhes Dent. 2015; 17:7–26.

19. Özcan M, Melo RM, Souza RO, Machado JP, Felipe Valandro L, Botttino MA. Effect of air-particle abrasion protocols on the biaxial flexural strength, surface characteristics and phase transformation of zirconia after cyclic loading. J Mech Behav Biomed Mater. 2013; 20:19–28.

20. Kern M, Barloi A, Yang B. Surface conditioning influences zirconia ceramic bonding. J Dent Res. 2009; 88:817–822.

21. Aurélio IL, Marchionatti AM, Montagner AF, May LG, Soares FZ. Does air particle abrasion affect the flexural strength and phase transformation of Y-TZP? A systematic review and meta-analysis. Dent Mater. 2016; 32:827–845.

22. Barkmeier WW, Erickson RL, Latta MA. Fatigue limits of enamel bonds with moist and dry techniques. Dent Mater. 2009; 25:1527–1531.

23. Wegner SM, Gerdes W, Kern M. Effect of different artificial aging conditions on ceramic-composite bond strength. Int J Prosthodont. 2002; 15:267–272.

24. Williamson RT, Mitchell RJ, Breeding LC. The effect of fatigue on the shear bond strength of resin bonded to porcelain. J Prosthodont. 1993; 2:115–119.

25. Re D, Augusti D, Augusti G, Giovannetti A. Early bond strength to low-pressure sandblasted zirconia: evaluation of a self-adhesive cement. Eur J Esthet Dent. 2012; 7:164–175.

26. Zhang Y, Lawn BR, Malament KA, Van Thompson P, Rekow ED. Damage accumulation and fatigue life of particle-abraded ceramics. Int J Prosthodont. 2006; 19:442–448.

27. Zhang Y, Lawn BR, Rekow ED, Thompson VP. Effect of sandblasting on the long-term performance of dental ceramics. J Biomed Mater Res B Appl Biomater. 2004; 71:381–386.

28. Özcan M, Kerkdijk S, Valandro LF. Comparison of resin cement adhesion to Y-TZP ceramic following manufacturers’ instructions of the cements only. Clin Oral Investig. 2008; 12:279–282.

29. Nishigori A, Yoshida T, Bottino MC, Platt JA. Influence of zirconia surface treatment on veneering porcelain shear bond strength after cyclic loading. J Prosthet Dent. 2014; 112:1392–1398.

30. Kern M, Wegner SM. Bonding to zirconia ceramic: adhesion methods and their durability. Dent Mater. 1998; 14:64–71.

31. Chang JC, Powers JM, Hart D. Bond strength of composite to alloy treated with bonding systems. J Prosthodont. 1993; 2:110–114.

32. Chen L, Suh BI, Brown D, Chen X. Bonding of primed zirconia ceramics: evidence of chemical bonding and improved bond strengths. Am J Dent. 2012; 25:103–108.

33. Nemli SK, Yilmaz H, Aydin C, Bal BT, Tıraş T. Effect of fatigue on fracture toughness and phase transformation of Y-TZP ceramics by X-ray diffraction and Raman spectroscopy. J Biomed Mater Res B Appl Biomater. 2012; 100:416–424.