sdj-10089

The Influence of Repeated Cementation of an Old and New Glass Ceramic Lithium Disilicate Veneers on Shear Bond Strength to the Tooth Structure (In Vitro Study)

*Sara H. Kazzaz, **Abdul Salam R. Zahawi

* MSc Student, Department of Conservative Dentistry, College of Dentistry University of Sulaimani, Sulaimani, Iraq.

** Kurdistan Board for Medical Specialties and Department of Conservative Dentistry, College of Dentistry University of Sulaimani, Sulaimani, Iraq.

Submitted: 21/04/2019; Accepted: 30/05/2019; Published 01/06/2019

DOI: https://doi.org/10.17656/sdj.10089

Abstract

Objective: Debonding of dental veneers represents the most common problems faced the patient and the dentist. The aim of this study was to compare the bond strength of repeated bonding Glass ceramic Lithium Disilicate (LD) veneers and new veneers to the tooth structure.

Methods: Twenty veneers from (IPS e.max CAD (LD), Ivoclar Vivadent) block (5mm length, 3mm width and 2mm thickness) were prepared. They bonded to twenty of prepared labial surfaces of bovine teeth by using Variolink resin cement (Ivoclar Vivadent) as a sample group of twenty samples. They randomly divided into two subgroups of 10 samples named as A1 and B1 and tested under the universal testing machine to measure shear bond strength (SBS). The 10 deboned veneers of A1 rebonded on the related tooth structure after conservative cleaning of both veneers and teeth structure and assigned as group A2. While for the subgroup B1, new 10 veneers bonded on the same teeth structure and assigned as group B2. The (SBS) tested for groups A2 and B2 and compared with each other and with the previous sample groups. All debonded samples evaluated under a stereomicroscope to assess the mode of failure.

Results: There is no statistical difference between all groups and the mode of failure was mostly adhesive failure between the resin and tooth structure.

Conclusions: There are no statistical differences in bond strength between re-bonding of debonded veneer compared with of bonding of the new veneer.

Keywords: IPS e.max CAD Lithium Disilicate, Veneer, Shear bond strength, Stereomicroscope. Full Article - PDF

References:

1. Calamia JR. Etched porcelain veneers: the current state of the art. Quintessence Int. 1985;16(1):5.

2. Horn HR. Porcelain laminate veneers bond to etched enamel. Dent. North Am. 1983;27:671684.

3. Simonsen RJ. Tensile bond strength of etched porcelain. J Den Res. 1983;62:297.

4. McLaren EA, Cao PT. Ceramics in dentistry— part I: classes of materials. Inside Dentistry. 2009;5(9):94-103.

5. Kheradmandan S, Koutayas SO, Bernhard M, Strub JR. Fracture strength of four different types of anterior 3-unit bridges after thermomechanical fatigue in the dual-axis chewing simulator. J Oral Rehabil. 2001;28(4):361-369.

6. Friedman MJ. A 15-year review of porcelain veneer failure--a clinician’s observations. Compend Contin Educ Dent.1998;19(6):625628.

7. Coelho G, Jr S, Jacinta M, Coelho M, Rizkalla AS. Adhesive Cementation of Etchable Ceramic. JCDA. 2009;75(5):379-84.

8. Cavalcanti AN, De Lima, AF, Peris AR, Mitsui FHO, Marchi GM. Effect of surface treatments and bonding agents on the bond strength of repaired composites. JERD. 2007;19(2);90-98.

9. Lung CYK, Matinlinna JP. Aspects of silane coupling agents and surface conditioning in dentistry: An overview. Dent. Mater. 2012;28(5):467-477.

10. Cho S, Rajitrangson P, Matis B, Platt J. Effect of Er,Cr:YSGG Laser, Air Abrasion, and Silane Application on Repaired Shear Bond Strength of Composites. Oper Dent. 2013;38(3):E58-E66.

11. Summitt JB, Robbins JW, Hilton TJ, Schwartz RS, dos Santos Jr. Fundamentals of operative dentistry: a contemporary approach. USA: Quintessence Pub; 2006.

12. Eshelman EG. Shim stock placement for contact evaluation Removal of partially veneers or fully polymerized resin from porcelain. J Prosthet Dent. 1993;69(4):443.

13. Relevance C. Shear Bond Strength of Porcelain Veneers Rebonded to Enamel. Oper Dent . 2015;40(3):112-121.

14. Jaber ZA. Evaluation of Shear Bond Strength of E. Max Veneers Bond to Enamel Tooth Structure (An in Vitro Study). J Dent. 2017;7(6):1-6.

15. Albakry M, Guazzato M, Swain MV. Biaxial flexural strength, elastic moduli, and x-ray diffraction characterization of three pressable all-ceramic materials. J Prosthet Dent. 2003;89(4):374-380.

16. Piwowarczyk A, Lauer HC, Sorensen JA. In vitro shear bond strength of cementing agents to fixed prosthodontic restorative materials. J Prosthet Dent. 2004;92(3):265-273.

17. Frankenberger R, Taschner M, Garcia-Godoy, F, Petschelt A, Krämer N. Leucite-reinforced glass ceramic inlays and onlays after 12 years. J Adhes Dent. 2008;10(5):393-398.

18. Bottino MA, Salazar-Marocho SM, Leite FPP, Vásquez VC, Valandro LF. Flexural strength of glass-infiltrated zirconia/alumina-based ceramics and feldspathic veneering porcelains. J Prosthet Dent. 2009;18(5):417-420.

19. Hickel R, Ilie N. Shear bond strength of porcelain laminate veneers to enamel , dentine and enamel – dentine complex bonded with different adhesive luting systems. J Dent. 2012;41(2):97-105.

20. Jain M. A next-generation approach to the characterization of a non-model plant transcriptome. Current Science. JSTOR. 2011;101(11):1435-39.

21. Adkisson PL. Internal clocks and insect diapause. Science. JSTOR. 1966;154(3746):234-241.

22. Saleh F, Taymour N. Validity of using bovine teeth as a substitute for human counterparts in adhesive tests. EMHJ. 2003;9(1-2):201-207.

23. Dadjoo N. Effect of different surface treatments on shear bond strength of zirconia to three resin cements. Lasers Med Sci. 2013;28(5):1233-1239.

24. Liu HL, Lin CL, Sun MT, Chang YH. Numerical investigation of macro- and micro-mechanics of a ceramic veneer bonded with various cement thicknesses using the typical and submodeling finite element approaches. J Dent. 2009;37(2):141-148.

This work is licensed under a Creative Commons Attribution 4.0 International License.