Physical properties of two bis-acryl interim materials: color stability, flexural strength and shear bond strength to flowable composite resin as add-on material

  • Leonardo Fernandes da Cunha
  • Ana Beatriz Franco Fernandes
  • Amanda Mahammad Mushashe
  • Gisele Maria Correr
  • Carla Castiglia Gonzaga


Aims: The objective of this study was to evaluate the mecha- nical properties of two bis-acryl interim resin materials, such as color stability, exural strength and shear bond strength to owable composite resin, simulating clinical situations when this material has to be used for repair as add-on. Two shades of two bis-acryl interim resin materials [Structur 2 SC (shades Bleach and A2); Protemp 4 (shades A1 and A2)] were evaluated. Discs (5 x 1 mm) were fabricated and ba- seline color was determined after 1 h. Ten specimens were immersed at 37oC in solutions of distilled water (control) and cola-based soft drink (Coca-Cola). Color measurements were performed with a spectrophotometer using CIELab pa- rameters. Color readings were again measured after 2 hours, 4 hours, 24 hours and 7 days. Flexural strength was deter- mined using the three-point bending test (10 x 1 x 2 mm) on a universal testing machine (0.5 mm/min) (n = 10). Discs of bis-acryl resin were embedded in acrylic resin, planned and distributed in 2 groups: G1 - Filtek Z350 Flow/Protemp4 and G2 - Grandio SO Flow/Structure 3 (n = 15). Cylinders (3.5 x 2 mm) were made with the owable composite resins and polymerized for 20 s. The specimens were stored in distilled water at 37oC for 24 h and subjected to shear bond strength test. Data were analyzed using one-way ANOVA and Tukey’s test (α = 0.05). ΔE values were higher for Structur Bleach (3.08)a compared with Protemp 4 (shade A1, 2.22)b (shade A2, 2.25)b. There were no signi cant differences between Structur Bleach and Structur A2 (2.62)ab. Coca-Cola presen- ted higher ΔE values (3.08)a than (2.00)b. Regarding time, ΔE values increased from 1.84a after 2 h to 2.31b after 4 h. The higher values were observed after 24 h and 7 days (2.93c and 3.09d, respectively). No signi cant differences were observed for the exural strength of Structur (22.05 MPa)a and Protemp 4 (19.01 MPa)a. The repairs executed with Structur/Grandio ow (9.21 MPa)a were similar to those performed with Pro- temp 4/Z350XT ow (10.71 MPa)a. It can be concluded that the two bis-acyl resins evaluated showed similar physical and mechanical properties.


1. Haselton DR, Diaz-Arnold AM, Dawson DV. Color stability of interim crown and xed partial denture resins. J Prosthet Dent. 2005 Jan;93(1):70-5.
2. Stansbury JW, Trujillo-Lemon M, Lu H, Ding X, Lin Y, Ge J. Conversion-dependent shrinkage stress and strain in dental resins and composites. Dent Mater. 2005 Jan; 21(1):56-67.
3. Balkenhol M, Knapp M, Ferger P, Heun U, Wostmann B. Correlation between polymerization shrinkage and marginal t of temporary crowns. Dent Mater. 2008 Nov; 24(11): 1575-84.
4. Mehrpour H, Farjood E, Giti R, Bar Ghasrdashti A, Heidari H. Evaluation of the Flexural Strength of Interim Restorative Materials in Fixed Prosthodontics. J Dent (Shiraz). 2016 Sep;17(3):201-6.
5. Spina DR, Grossi JR, Cunali RS, Baratto Filho F, da Cunha LF, Gonzaga CC, et al. Evaluation of Discoloration Removal by Polishing Resin Composites Submitted to Staining in Different Drink Solutions. Int Sch Res Notices. 2015 Aug; 20(1):2015:853975. doi: 10.1155/2015/853975.
6. Pissaia JF, Correr GM, Gonzaga CC, Cunha LF. In uence of shade, curing mode, and aging on the color stability of resin cements. Braz J Oral Sci. 2015 Oct;14(4): 272-5.
7. Berber A, Cakir FY, Baseren M, Gurgan S. Effect of different polishing systems and drinks on the color stability of resin composite. J Contemp Dent Pract. 2013 Jul;14(4): 662-7.
8. Lee J, Lee S. Evaluation of add-on methods for bis-acryl composite resin interim restorations. J Prosthet Dent. 2015 Oct;114(4):594-601. doi: 10.1016/j.prosdent.2015.02.020.
9. Reddy PS, Tejaswi KLS, Shetty S, Annapoorna BM, Pujari SC, Thippeswamy HM. Effects of commonly consumed beverages on surface roughness and color stability of the nano, microhybrid and hybrid composite resins: an in vitro study. J Contemp Dent Pract. 2013 Jul;14(4):718-23.
10. Rutkunas V, Sabaliauskas V, Mizutani H. Effects of different food colorants and polishing techniques on color stability of provisional prosthetic materials. Dent Mater J. 2010 Mar;29(2):167-76.
11. Ferracane JL, Berge HX, Condon JR. In vitro aging of dental composites in water--effect of degree of conversion, ller volume, and ller/matrix coupling. J Biomed Mater Res. 1998 Dec;42(3):465-72.
12. Güler AU, Yilmaz F, Kulunk T, Guler E, Kurt S. Effects of different drinks on stainability of resin composite provisional restorative materials. J Prosthet Dent. 2005 Aug;94(2):118-24.
13. Cakan U, Kara HB. Effect of liquid polishing materials on the stainability of bis-acryl interim restorative material in vitro. J Prosthet Dent. 2015 May;113(5):475-9. doi: 10.1016/j.prosdent.2014.09.020.
14. Söderholm KJ, Zigan M, Ragan M, Fischlschweiger W, Bergman M. Hydrolytic degradation of dental composites. J Dent Res. 1984 Oct ;63(10):1248-54.
15. Koishi Y, Tanoue N, Atsuta M, Matsumura H. In uence of visible-light exposure on colour stability of current dual-curable luting composites. J Oral Rehabil. 2002 Apr;29(4):387-93.
16. Ruyter IE, Nilner K, Moller B. Color stability of dental composite resin materials for crown and bridge veneers. Dent Mater. 1987 Oct;3(5):246-51.
17. Uchida H, Vaidyanathan J, Viswanadhan T, Vaidyanathan TK. Color stability of dental composites as a function of shade. J Prosthet Dent. 1998 Apr;79(4):372-7.
18. Lee YK, Powers JM. Color and optical properties of resin-based composites for bleached teeth after polymerization and accelerated aging. Am J Dent. 2001 Dec;14(6): 349-54.
19. Kadiyala KK, Badisa MK, Anne G, Anche SC, Chiramana S, Muvva SB, et al. Evaluation of exural strength of thermocycled interim resin materials used in prosthetic rehabilitation- an in-vitro study. J Clin Diagn Res. 2016 Sep;10(9):ZC91-ZC95.
20. Fonseca RB, Marques AS, Bernades K de O, Carlo HL, Naves LZ. Effect of glass ber incorporation on exural properties of experimental composites. Biomed Res Int. 2014;2014:542678. doi:10.1155/2014/542678.
21. Fonseca RB, de Paula MS, Favarão IN, Kasuya AV, de Almeida LN, Mendes GA, et al. Reinforcement of dental methacrylate with glass ber after heated silane application. Biomed Res Int. 2014;2014:364398. doi: 10.1155/2014/364398.
22. Vieira C, Silva-Sousa YT, Pessarello NM, Rached-Junior FA, Souza-Gabriel AE. Effect of high- concentrated bleaching agents on the bond strength at dentin/resin interface and exural strength of dentin. Braz Dent J. 2012;23(1):28-35
23. Firoozmand LM, Pagani C. In uence of bleaching treatment on exural resistance of hybrid materials. Acta Odontol Latinoam. 2009;22(2):75-80.
24. da Cunha LF, Nascimento BM, Baratto SSP, Gonzaga CC, Furuse AY, Mondelli J, et al. In uence of different surface treatments on the shear bond strength of a methacrylate resin composite repaired with silorane-based resin. RSBO. 2013 Jul-Sep;10(3):240-4.
25. Hagge MS1, Lindemuth JS, Jones AG. Shear bond strength of bis-acryl composite provisional material repaired with owable composite. J Esthet Restor Dent. 2002;14(1):47-52.
26. Chen HL, Lai YL, Chou IC, Hu CJ, Lee SY. Shear bond strength of provisional restoration materials repaired with light-cured resins. Oper Dent. 2008 Sep-Oct;33(5):508-15. doi: 10.2341/07-130.
27. Shim JS, Park YJ, Manaloto A, Shin S, Lee J, Choi Y, Ryu J. Shear bond strength of four different repair materials applied to bis-acryl resin provisional materials measured 10 minutes, one Hour, and two days after bonding. Oper Dent. 2014 Jul-Aug;39(4): E147-53. doi: 10.2341/13-196-L.
28. Shim JS, Lee JY,Choi YJ, Shin SW, Ryu JJ. Effect of light-curing, pressure, oxygen inhibition, and heat on shear bond strength between bis-acryl provisional restoration and bis-acryl repair materials. J Adv Prosthodont. 2015 Feb;7(1):47-50. doi: 10.4047/jap.2015.7.1.47.
How to Cite
CUNHA, Leonardo Fernandes da et al. Physical properties of two bis-acryl interim materials: color stability, flexural strength and shear bond strength to flowable composite resin as add-on material. Brazilian Journal of Oral Sciences, [S.l.], p. e17053, oct. 2017. ISSN 1677-3225. Available at: <>. Date accessed: 17 july 2019. doi:
Original Research