Grinding of composite cores using diamond burs with different grit sizes
the effects on the retentive strength of zirconia crowns
Aim: To evaluate the retention of Y-TZP crowns cemented in aged composite cores ground with burs of different grit sizes. Methods: Sixty composite resin simplified full-crown preparations were scanned, while 60 Y-TZP crowns with occlusal retentions were milled. The composite preparations were stored for 120 days (wet environment-37°C) and randomly distributed into three groups (n=20) according to the type of composite core surface treatment. The groups were defined as: CTRL (control: No treatment), EFB (extra-fine diamond bur [25μm]), and CB (coarse diamond bur [107μm]). The grinding was performed with an adapted surveyor standardizing the speed and pressure of the grinding. The intaglio surfaces on the crowns were air-abraded with silica-coated alumina particles (30 μm) and then a silane was applied. The crowns were cemented with self-adhesive resin cement, thermocycled (12,000 cycles; 5/55°C), stored (120 days) and submitted to a
retention test (0.5mm/min). The retentive strength data (MPa) were analyzed using one-way analysis of variance and Tukey test, as well as Weibull analysis. Failures were classified as 50C (above 50% of cement in the crown), 50S (above 50% of cement in the substrate) and COE (composite core cohesive failure). Results: No statistical difference was observed among the retention values (p=0.975). However, a higher Weibull modulus was observed in the CTRL group. The predominant type of failure was 50S (above 50% of cement in the substrate composite). Conclusion: The retention of zirconia crowns was not affected by grinding using diamond burs with different grit sizes (coarse/extra-fine) or when no grinding was performed.
2. Aboushelib MN, Feilzer AJ, Kleverlaan CJ. Bonding to zirconia using a new surface treatment. J Prosthodont. 2010 Jul;19(5):340-6. doi: 10.1111/j.1532-849X.2010.00575.x.
3. Aurelio IL, Fraga S, Rippe MP, Valandro LF. Are posts necessary for the restoration of root filled teeth with limited tissue loss? A structured review of laboratory and clinical studies. Int Endod J. 2016 Sep;49(9):827-835. doi: 10.1111/iej.12538.
4. Amaral R, Rippe M, Oliveira BG, Cesar PF, Bottino MA, Valandro LF. Evaluation of tensile retention of Y-TZP crowns after long-term aging: effect of the core substrate and crown surface conditioning. Oper Dent. 2014 Nov-Dec;39(6):619-26. doi: 10.2341/13-281-L.
5. Swift EJ Jr, LeValley BD, Boyer DB. Evaluation of new methods for composite repair. Dent Mater. 1992 Nov;8(6):362-5.
6. Rippe MP, Amaral R, Oliveira FS, Cesar PF, Scotti R, Valandro LF, et al. Evaluation of tensile retention of Y-TZP crowns cemented on resin composite cores: effect of the cement and Y-TZP surface conditioning. Oper Dent. 2015 Jan-Feb;40(1):E1-E10. doi: 10.2341/13-310-L.
7. Tezvergil A, Lassila LV, Vallittu PK. Composite-composite repair bond strength: effect of different adhesion primers. J Dent. 2003 Nov;31(8):521-5.
8. Ferracane JL, Marker VA. Solvent degradation and reduced fracture toughness in aged composites. J Dent Res. 1992 Jan;71(1):13-9.
9. Tarumi H, Torii M, Tsuchitani Y. Relationship between particle size of barium glass filler and water sorption of light-cured composite resin. Dent Mater J. 1995 Jun;14(1):37-44.
10. Suzuki S, Ori T, Saimi Y. Effects of filler composition on flexibility of microfilled resin composite. J Biomed Mater Res B Appl Biomater. 2005 Jul;74(1):547-52.
11. Fawzy AS, El-Askary FS, Amer MA. Effect of surface treatments on the tensile bond strength of repaired water-aged anterior restorative micro-fine hybrid resin composite. J Dent. 2008 Dec;36(12):969-76. doi: 10.1016/j.jdent.2008.07.014.
12. Soderholm KJ, Roberts MJ. Influence of water exposure on the tensile strength of composites. J Dent Res. 1990 Dec;69(12):1812-6.
13. Frankenberger R, Kramer N, Ebert J, Lohbauer U, Käppel S, ten Weges S, et al. Fatigue behavior of the resin-resin bond of partially replaced resin based composite restorations. Am J Dent. 2003 Feb;16(1):17-22.
14. Ozcan M, Barbosa SH, Melo RM, Galhano GA, Bottino MA. Effect of surface conditioning methods on the microtensile bond strength of resin composite to composite after aging conditions. Dent Mater. 2007 Oct;23(10):1276-82.
15. Perriard J, Lorente MC, Scherrer S, Belser UC, Wiskott HW. The effect of water storage, elapsed time and contaminants on the bond strength and interfacial polymerization of a nanohybrid composite. J Adhes Dent. 2009 Dec;11(6):469-78. doi: 10.3290/j.jad.a18141.
16. Costa TR, Ferreira SQ, Klein-Júnior CA, Loguercio AD, Reis A. Durability of surface treatments and intermediate agents used for repair of a polished composite. Oper Dent. 2010 Mar-Apr;35(2):231-7. doi: 10.2341/09-216-L.
17. Papacchini F, Dall'Oca S, Chieffi N, Goracci C, Sadek FT, Suh BI, et al. Composite-to-composite microtensile bond strength in the repair of a microfilled hybrid resin: effect of surface treatment and oxygen inhibition. J Adhes Dent. 2007 Feb;9(1):25-31.
18. Loomans BA, Cardoso MV, Roeters FJ, Opdam NJ, De Munck J, Huysmans MC, et al. Is there one optimal repair technique for all composites? Dent Mater. 2011 Jul;27(7):701-9. doi: 10.1016/j.dental.2011.03.013.
19. Polat S, Cebe F, Tunçdemir A, Öztürk C, Üşümez A. Evaluation of the bond strength between aged composite cores and luting agent. J Adv Prosthodont. 2015 Apr;7(2):108-14. doi: 10.4047/jap.2015.7.2.108.
20. Burnett LH Jr, Shinkai RS, Eduardo Cde P. Tensile bond strength of a one-bottle adhesive system to indirect composites treated with Er:YAG laser, air abrasion, or fluoridric acid. Photomed Laser Surg. 2004 Aug;22(4):351-6.
21. Kimyai S, Mohammadi N, Navimipour EJ, Rikhtegaran S. Comparison of the effect of three mechanical surface treatments on the repair bond strength of a laboratory composite. Photomed Laser Surg. 2010 Oct;28 Suppl 2:S25-30. doi: 10.1089/pho.2009.2598.
22. Lizarelli Rde F1, Moriyama LT, Bagnato VS. Ablation of composite resins using Er:YAG laser-comparison with enamel and dentin. Lasers Surg Med. 2003;33(2):132-9.
23. Correa-Afonso AM, Pecora JD, Palma-Dibb RG. Influence of pulse repetition rate on temperature rise and working time during composite filling removal with the Er:YAG laser. Photomed Laser Surg. 2008 Jun;26(3):221-5. doi: 10.1089/pho.2007.2120.
24. Cotes C, Cardoso M, Melo RM, Valandro LF, Bottino MA. Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent. J Appl Oral Sci. 2015 Jan-Feb;23(1):71-8. doi: 10.1590/1678-775720140113.
25. Rinastiti M, Özcan M, Siswomihardjo W, Busscher HJ. Effects of surface conditioning on repair bond strengths of non-aged and aged microhybrid, nanohybrid, and nanoflled composite resins. Clin Oral Investig. 2011 Oct;15(5):625-33. doi: 10.1007/s00784-010-0426-6.
26. Loomans BA, Cardoso MV, Opdam NJ, Roeters FJ, De Munck J, Huysmans MC, et al. Surface roughness of etched composite resin in light of composite repair. J Dent. 2011 Jul;39(7):499-505. doi: 10.1016/j.jdent.2011.04.007.
27. Lucena-Martín C, González-López S, Navajas-Rodriguez de Mondelo JM. The effect of various surface treatments and bonding agents on the repair strength of heat-treated composites. J Prosthet Dent. 2001 Nov;86(5):481-8.
28. Passos SP, Özcan M, Vanderlei AD, Leite FP, Kimpara ET, Bottino MA. Bond strength durability of direct and indirect composite systems following surface conditioning for repair. J Adhes Dent. 2007 Oct;9(5):443-7.
29. Özcan M, Corazza PH, Marocho SM, Barbosa SH, Bottino MA. Repair bond strength of microhybrid, nanohybrid and nanofilled resin composites: effect of substrate resin type, surface conditioning and ageing. Clin Oral Investig. 2013 Sep;17(7):1751-8. doi: 10.1007/s00784-012-0863-5.
30. Sun R, Suansuwan N, Kilpatrick N, Swain M. Characterisation of tribochemically assisted bonding of composite resin to porcelain and metal. J Dent. 2000 Aug;28(6):441-5.
31. Stewart GP, Jain P, Hodges J. Shear bond strength of resin cements to both ceramic and dentin. J Prosthet Dent. 2002 Sep;88(3):277-84.
32. Ehlers V, Kampf G, Stender E, Willershausen B, Ernst CP. Effect of thermocycling with or without 1 year of water storage on retentive strengths of luting cements for zirconia crowns J Prosthet Dent. 2015 Jun;113(6):609-15. doi: 10.1016/j.prosdent.2014.12.001.
33. Oilo G, Jørgensen KD. The influence of surface roughness on the retentive ability of two dental luting cements. J Oral Rehabil. 1978 Oct;5(4):377-89.
34. Felton DA, Kanoy BE, White JT. (1987) The effect of surface roughness of crown preparations on retention of cemented castings. J Prosthet Dent. 1987 Sep;58(3):292-6.
35. Amaral R, Ozcan M, Valandro LF, Bottino MA. Effect of conditioning methods on the microtensile bond strength of phosphate monomer-based cement on zirconia ceramic in dry and aged conditions. J Biomed Mater Res B Appl Biomater. 2008 Apr;85(1):1-9.
36. Bouschlicher MR, Reinhardt JW, Vargas MA. Surface treatment techniques for resin composite repair. Am J Dent. 1997 Dec;10(6):279-83.
37. Shen C, Mondragon E, Gordan VV, Mjör IA. The effect of mechanical undercuts on the strength of composite repair. J Am Dent Assoc. 2004 Oct;135(10):1406-12; quiz 1467-8.
38. Valente LL, Silva MF, Fonseca AS, Münchow EA, Isolan CP, Moraes RR. Effect of Diamond Bur Grit Size on Composite Repair. J Adhes Dent. 2015 Jun;17(3):257-63. doi: 10.3290/j.jad.a34398.
39. Bonstein T, Garlapo D, Donarummo J Jr, Bush PJ. Evaluation of varied repair protocols applied to aged composite resin. J Adhes Dent. 2005 Spring;7(1):41-9.
40. Staxrud F, Dahl JE. Role of bonding agents in the repair of composite resin restorations. Eur J Oral Sci. 2011 Aug;119(4):316-22. doi: 10.1111/j.1600-0722.2011.00833.x.
41. Padipatvuthikul P, Mair LH. Bonding of composite to water aged composite with surface treatments. Dent Mater. 2007 Apr;23(4):519-25.
42. De Munck J, Vargas M, Van Landuyt K, Hikita K, Lambrechts P, Meerbeek B. Bonding of an auto-adhesive material to enamel and dentin. Dent Mater. 2004 Dec;20(10):963-71.
43. Piwowarczyk A, Lauer HC, Sorensen JA. In vitro shear bond strength of cementing agents to fixed prosthodontic restorative materials. J Prosthet Dent. 2004 Sep;92(3):265-73.
44. Palacios RP, Johnson GH, Philips KM, Raigrodski AJ. Retention of zirconium oxide ceramic crowns with three types of cement. J Prosthet Dent. 2006 Aug;96(2):104-14.
45. Ernst CP, Aksoy E, Stender E, Willershausen B. Influence of different luting concepts on long term retentive strength of zirconia crowns. Am J Dent. 2009 Apr;22(2):122-8.
46. Kaufman EG, Coelho DH, Colin J. Factors influencing the retention of cemented gold castings. J Prosthet Dent. 1961 May-Jun;11(3):487-502. doi: 10.1016/0022-3913(61)90232-3.
47. Ayad MF, Rosenstiel SF, Hassan MM. Surface roughness of dentin after tooth preparation with different rotary instrumentation. J Prosthet Dent. 1996 Feb;75(2):122-8.
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