Polímeros: Ciência e Tecnologia
Polímeros: Ciência e Tecnologia
Original Article

Effect of disinfection techniques on physical-mechanical properties of a microwave-activated acrylic resin

Fortes, Carmen Beatriz Borges; Collares, Fabrício Mezzomo; Leitune, Vicente Castelo Branco; Schiroky, Priscila Raquel; Rodrigues, Stéfani Becker; Samuel, Susana Maria Werner; Petzhold, Cesar Liberato; Stefani, Valter

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Abstract: The effects of disinfection by microwave irradiation and immersion in peracetic acid on the physical-mechanical properties of a microwave-activated acrylic resin were evaluated. Specimens of acrylic resin were divided into a control group (specimens not disinfected) and 2 test groups subjected to one disinfection method: microwave irradiation at 850 W for 1 minute or immersion in 50 mL of 0.2% peracetic acid for 5 minutes. Specimens were submitted to Knoop hardness, flexural strength, flexural modulus, Izod impact, water sorption and solubility, glass transition temperature, and degree of conversion tests. Microwave disinfection significantly increased the mean Knoop hardness, Izod impact strength, water sorption, water solubility and glass transition temperature, whereas the flexural properties remained unaffected. Microwave disinfection increased the degree of conversion. Peracetic acid disinfection showed no changes in any properties. Both disinfection techniques did not adversely affect the evaluated properties.


acrylic resins, microwave disinfection, peracetic acid


Radford, D. R., Challacombe, S. J., & Walter, J. D. (1999). Denture plaque and adherence of Candida albicans to denture-base materials in vivo and in vitro. Critical Reviews in Oral Biology and Medicine, 10(1), 99-116. http://dx.doi.org/10.1177/10454411990100010501. PMid:10759429.

Barbeau, J., Seguin, J., Goulet, J. P., Koninck, L., Avon, S. L., Lalonde, B., Rompre, P., & Deslauriers, N. (2003). Reassessing the presence of Candida albicans in denture-related stomatitis. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 95(1), 51-59. http://dx.doi.org/10.1067/moe.2003.44. PMid:12539027.

Ramage, G., Tomsett, K., Wickes, B. L., Lopez-Ribot, J. L., & Redding, S. W. (2004). Denture stomatitis: a role for Candida biofilms. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 98(1), 53-59. http://dx.doi.org/10.1016/j.tripleo.2003.04.002. PMid:15243471.

Gendreau, L., & Loewy, Z. G. (2011). Epidemiology and etiology of denture stomatitis. Journal of Prosthodontics, 20(4), 251-260. http://dx.doi.org/10.1111/j.1532-849X.2011.00698.x. PMid:21463383.

Kulak-Ozkan, Y., Kazazoglu, E., & Arikan, A. (2002). Oral hygiene habits, denture cleanliness, presence of yeasts and stomatitis in elderly people. Journal of Oral Rehabilitation , 29(3), 300-304. http://dx.doi.org/10.1046/j.1365-2842.2002.00816.x. PMid:11896849.

de Souza, R. F., de Freitas Oliveira Paranhos, H., Lovato da Silva, C. H., Abu-Naba’a, L., Fedorowicz, Z., & Gurgan, C. A. (2009). Interventions for cleaning dentures in adults. Cochrane Database of Systematic Reviews, 7(4), CD007395. http://dx.doi.org/10.1002/14651858.CD007395.pub2. PMid:19821412.

Banting, D. W., & Hill, S. A. (2001). Microwave disinfection of dentures for the treatment of oral candidiasis. Special Care in Dentistry, 21(1), 4-8. http://dx.doi.org/10.1111/j.1754-4505.2001.tb00216.x. PMid:11795452.

Garcia-Cuesta, C., Sarrion-Perez, M. G., & Bagan, J. V. (2014). Current treatment of oral candidiasis: a literature review. Journal of Clinical and Experimental Dentistry , 6(5), e576-e582. http://dx.doi.org/10.4317/jced.51798. PMid:25674329.

Schwindling, F. S., Rammelsberg, P., & Stober, T. (2014). Effect of chemical disinfection on the surface roughness of hard denture base materials: a systematic literature review. The International Journal of Prosthodontics, 27(3), 215-225. http://dx.doi.org/10.11607/ijp.3759. PMid:24905261.

Machado, A. L., Breeding, L. C., Vergani, C. E., & da Cruz Perez, L. E. (2009). Hardness and surface roughness of reline and denture base acrylic resins after repeated disinfection procedures. The Journal of Prosthetic Dentistry, 102(2), 115-122. http://dx.doi.org/10.1016/S0022-3913(09)60120-7. PMid:19643225.

Fernandes, F. H., Orsi, I. A., & Villabona, C. A. (2013). Effects of the peracetic acid and sodium hypochlorite on the colour stability and surface roughness of the denture base acrylic resins polymerised by microwave and water bath methods. Gerodontology , 30(1), 18-25. http://dx.doi.org/10.1111/j.1741-2358.2012.00640.x. PMid:22486758.

Guiraldo, R. D., Sczepanski, F., Sczepanski, C. R. B., Berger, S. B., Consani, R. L. X., & Gonini-Junior, A. (2014). Effect of sodium hypochlorite and peracetic acid on the surface roughness of acrylic resin polymerized by heated water for short and long cycles. European Journal of Dentistry, 8(4), 533-537. http://dx.doi.org/10.4103/1305-7456.143638. PMid:25512737.

Seó, R. S., Vergani, C. E., Giampaolo, E. T., Pavarina, A. C., Reis, J. M. S. N., & Machado, A. L. (2008). Effect of disinfection by microwave irradiation on the strength of intact and relined denture bases and the water sorption and solubility of denture base and reline materials. Journal of Applied Polymer Science, 107(1), 300-308. http://dx.doi.org/10.1002/app.27120.

Azzarri, M. J., Cortizo, M. S., & Alessandrini, J. L. (2003). Effect of the curing conditions on the properties of an acrylic denture base resin microwave-polymerised. Journal of Dentistry, 31(7), 463-468. http://dx.doi.org/10.1016/S0300-5712(03)00090-3. PMid:12927457.

Blagojevic, V., & Murphy, V. M. (1999). Microwave polymerization of denture base materials: a comparative study. Journal of Oral Rehabilitation, 26(10), 804-808. http://dx.doi.org/10.1046/j.1365-2842.1999.00456.x. PMid:10564437.

Urban, V. M., Machado, A. L., Oliveira, R. V., Vergani, C. E., Pavarina, A. C., & Cass, Q. B. (2007). Residual monomer of reline acrylic resins: effect of water-bath and microwave post-polymerization treatments. Dental Materials, 23(3), 363-368. http://dx.doi.org/10.1016/j.dental.2006.01.021. PMid:16620950.

Fortes, C. B. B., Leitune, V. C. B., Collares, F. M., Dornelles, N. B., Jr., Rodrigues, S. B., Samuel, S. W., Petzhold, C. L., & Stefani, V. (2015). Acrylic resin disinfection by peracetic acid and microwave energy. Revista Gaucha de Odontologia, 63(3), 315-318. http://dx.doi.org/10.1590/1981-863720150003000093013.

Senna, P. M., Silva, W. J., & Del Bel Cury, A. A. (2012). Denture disinfection by microwave energy: influence of Candida albicans biofilm. Gerodontology , 29(2), e186-e191. http://dx.doi.org/10.1111/j.1741-2358.2010.00439.x. PMid:21083738.

Consant, R. L. X., Vieira, E. B., Mesquita, M. F., Mendes, W. B., & Arioli-Filho, J. N. (2008). Effect of microwave disinfection on physical and mechanical properties of acrylic resins. Brazilian Dental Journal, 19(4), 348-353. http://dx.doi.org/10.1590/S0103-64402008000400011. PMid:19180326.

Hamouda, I. M., & Ahmed, S. A. (2010). Effect of microwave disinfection on mechanical properties of denture base acrylic resin. Journal of the Mechanical Behavior of Biomedical Materials, 3(7), 480-487. http://dx.doi.org/10.1016/j.jmbbm.2010.05.002. PMid:20696412.

Lombardo, C. E., Canevarolo, S. V., Reis, J. M., Machado, A. L., Pavarina, A. C., Giampaolo, E. T., & Vergani, C. E. (2012). Effect of microwave irradiation and water storage on the viscoelastic properties of denture base and reline acrylic resins. Journal of the Mechanical Behavior of Biomedical Materials, 5(1), 53-61. http://dx.doi.org/10.1016/j.jmbbm.2011.09.011. PMid:22100079.

Ribeiro, D. G., Pavarina, A. C., Machado, A. L., Giampaolo, E. T., & Vergani, C. E. (2008). Flexural strength and hardness of reline and denture base acrylic resins after different exposure times of microwave disinfection. Quintessence International , 39(10), 833-840. PMid:19093060.

Konchada, J., Karthigeyan, S., Ali, S. A., R, V., Amirisetty, R., & Dani, A. (2013). Effect of simulated microwave disinfection on the mechanical properties of three different types of denture base resins. Journal of Clinical and Diagnostic Research, 7(12), 3051-3053. http://dx.doi.org/10.7860/JCDR/2013/7376.3850. PMid:24551725.

Senna, P. M., Da Silva, W. J., Faot, F., & Del Bel Cury, A. A. (2011). Microwave disinfection: cumulative effect of different power levels on physical properties of denture base resins. Journal of Prosthodontics, 20(8), 606-612. http://dx.doi.org/10.1111/j.1532-849X.2011.00770.x. PMid:21980952.

Chassot, A. L., Poisl, M. I., & Samuel, S. M. (2006). In vivo and in vitro evaluation of the efficacy of a peracetic acid-based disinfectant for decontamination of acrylic resins. Brazilian Dental Journal, 17(2), 117-121. http://dx.doi.org/10.1590/S0103-64402006000200006. PMid:16924337.

Subha, N., Prabhakar, V., Koshy, M., Abinaya, K., Prabu, M., & Thangavelu, L. (2013). Efficacy of peracetic acid in rapid disinfection of Resilon and gutta-percha cones compared with sodium hypochlorite, chlorhexidine, and povidone-iodine. Journal of Endodontics , 39(10), 1261-1264. http://dx.doi.org/10.1016/j.joen.2013.06.022. PMid:24041388.

International. Organization for Standardization – ISO. (1999). ISO 1567: 1999: dentistry-denture base polymers. Geneva: ISO.

American Society for Testing and Materials – ASTM. (2010). ASTM D256: standard test methods for determining the izod pendulum impact resistance of plastics. West Conshohocken: ASTM.

Shen, C., Javid, N. S., & Colaizzi, F. A. (1989). The effect of glutaraldehyde base disinfectants on denture base resins. The Journal of Prosthetic Dentistry, 61(5), 583-589. http://dx.doi.org/10.1016/0022-3913(89)90281-3. PMid:2501480.

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