Dimensional stability of HYDROGUM 5 alginate subjected to three types of disinfectants
DOI:
https://doi.org/10.53732/rccsalud/e8904Keywords:
alginate, disinfectants, dimensional stabilityAbstract
Introduction. The disinfection of dental impressions is essential to prevent cross-contamination; however, some disinfectants may affect the dimensional stability of irreversible hydrocolloids. Objective. This study aimed to evaluate the influence of three disinfectants (2% glutaraldehyde, 2.5% sodium hypochlorite, and 0.12% chlorhexidine) on the dimensional stability of Hydrogum 5 alginate. Materials and Method. An in vitro experimental study was conducted using impressions of a master model made with Hydrogum 5. The impressions were divided into three groups (n = 10): Group A1, immersed in 2% glutaraldehyde for 10 min; Group A2, immersed in 2.5% sodium hypochlorite for 10 min; and Group A3, immersed in 0.12% chlorhexidine for 10 min. After immersion, impressions were rinsed for 5 s, air-dried for 5 s, and poured immediately. The diameter, height, and width of the casts were measured with a digital vernier caliper, and dimensional differences from the master model were calculated. Data were analyzed using the Shapiro–Wilk test for normality and variance homogeneity tests; ANOVA and post-hoc comparisons were applied accordingly. Results. All mean height differences showed expansion, with the greatest in A2 (hypochlorite) and the smallest in A1 (glutaraldehyde). Width expansion was observed in A1 and A3. Variance homogeneity was confirmed for height but rejected for width. Tukey’s test showed significant differences (p = 0.05) in width between sodium hypochlorite and the other disinfectants. Conclusion. It was concluded that Hydrogum 5 exhibits slight dimensional variability after disinfection; however, 0.12% chlorhexidine and 2% glutaraldehyde produced minimal changes and acceptable clinical stability.
Downloads
References
1. Ambrose PK, Juszczyk AS, Clark RK, Radford DR. Effect of two different disinfectants on dimensional stability of newer alginate impression materials over five days. Eur J Prosthodont Restor Dent. 2011;19(4):142-5. https://pubmed.ncbi.nlm.nih.gov/22645797/
2. Cova J. Materiales dentales: fundamentos y aplicaciones clínicas. 2a ed. Madrid: Editorial Médica Panamericana; 2015.
3. Sharif RA, Abdelaziz KM, Alshahrani NM, Almutairi FS, Alaseri MA, Abouzeid HL, et al. The accuracy of gypsum casts obtained from disinfected extended-pour alginate impressions through prolonged storage times. BMC Oral Health. 2021;21:296. https://bmcoralhealth.biomedcentral.com/articles/10.1186/s12903-021-01649-2
4. Zhermack. Hydrogum 5: High performance alginate impression material [Technical Data Sheet]. Badia Polesine (Italy): Zhermack; 2023. https://www.zhermack.com/en/product/hydrogum-5/
5. Rad HF, Ghaffari T, Safavi SH. In vitro evaluation of dimensional stability of alginate impressions after disinfection by spray and immersion methods. J Dent Res Dent Clin Dent Prospects. Fall 2010;4(4):130–5. http://dx.doi.org/10.5681/joddd.2010.032
6. Nassar U, Aziz T, Flores-Mir C. Dimensional stability of irreversible hydrocolloid impression materials as a function of pouring time: a systematic review. J Prosthet Dent. 2011;106(2):126–33. http://dx.doi.org/10.1016/S0022-3913(11)60108-X
7. Rodrigues Dorner A, Ferraz da Silva J, Uemura ES, Souto Borges AL, Fernandes Junior VV, Colauto Yamamoto ET. Effect of disinfection of irreversible hydrocolloid impression materials with 1% sodium hypochlorite on surface roughness and dimensional accuracy of dental stone casts. European J Gen Dent. 2014;3(2):113. https://d-nb.info/1247753905/34
8. Kohn, W G; Collins, A S; Cleveland, J L; Harte, J A; Eklund, K J; Malvitz, D M. Centers for Disease Control and Prevention. Guidelines for Infection Control in Dental Health-Care Settings—2003. Atlanta: U.S. Department of Health & Human Services; 2003. https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5217a1.htm
9. Qiu Y, Xu J, Xu Y, Shi Z, Wang Y, Zhang L, et al. Disinfection efficacy of sodium hypochlorite and glutaraldehyde and their effects on the dimensional stability and surface properties of dental impressions: a systematic review. PeerJ. 2023;11:e14868. http://dx.doi.org/10.7717/peerj.14868
10. Muzzafar D, Braden M, Parker S, Patel M. The effect of disinfecting solutions on the dimensional stability of dental alginate impression materials. Dent Mater. 2012;28(7):749–755. http://dx.doi.org/10.1016/j.dental.2012.03.013
11. Taylor RL, Wright PS, Maryan C. Disinfection procedures: Their effect on the dimensional accuracy and surface quality of irreversible hydrocolloid impression materials and gypsum casts. Dent Mater. 2002;18(2):103–110. https://doi.org/10.1016/S0109-5641(01)00027-6
12. Wala M, Al-Ali M, Al Tarawneh S, Taha S, Saleh MW, Ereifij N. The effects of disinfectants on dimensional accuracy and surface quality of impression materials and gypsum castsJ Clin Med Res. 2009 Jun;1(2):81-9 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3318858/
13. Samra RK, Bhide SV. Efficacy of different disinfectant systems on alginate and addition silicone impression materials of Indian and international origin: A comparative evaluation. J Indian Prosthodont Soc. 2010;10(3):182–189. https://doi.org/10.1007/s13191-010-0040-y
14. Bustos J, Herrera R, González U, Martínez A, Catalán A. Effect of immersion disinfection with 0.5% sodium hypochlorite and 2% glutaraldehyde on alginate and silicone: microbiology and SEM study. Int J Odontostomat. 2010;4(2):169–177. http://dx.doi.org/10.4067/S0718-381X2010000200011
15. Chavarry T. Efecto en la estabilidad dimensional de impresiones con diferentes alginatos al ser sometidos a tres desinfectantes viricidas [Tesis]. Lima: Universidad Científica del Sur; 2022. https://repositorio.cientifica.edu.pe/bitstream/handle/20.500.12805/2475/TL-Chavarry%20T.pdf
16. Herrera SP, Merchant VA. Dimensional stability of dental impressions after immersion disinfection. J Am Dent Assoc. 1986;113(3):419–422. https://jada.ada.org/article/S0002-8177(86)33020-4/
17. Al-Nema LM. The effect of chemical disinfectants on the setting time and dimensional change of alginate impression material. Al Rafidain Dent J. 2018;18(1):1-8. https://iasj.rdd.edu.iq/journals/uploads/2024/12/18/590bc85fc727d816bd0c6e6a10a85aea.pdf
18. Rohanian A, Ommati Shabestari G, Zeighami S, Samadi MJ, Shamshiri AR. Effect of storage time of extended-pour and conventional alginate impressions on dimensional accuracy of casts. J Dent (Tehran). 2014;11(6):655–664. https://pubmed.ncbi.nlm.nih.gov/25628695/
19. Ismail HA, Mahross HZ, Shikho S. Evaluation of dimensional accuracy for different complete edentulous impressions immersed in different disinfectant solutions. Eur J Dent. 2017;11(2):242–249. https://doi.org/10.4103/ejd.ejd_268_16
Downloads
Published
Issue
Section
License
Copyright (c) 2026 Leticia Orue Martinez, Claire Soledad Paredes, Liza Maribel Peña, Rocio Marlene Ramos Arrúa
This work is licensed under a Creative Commons Attribution 4.0 International License.
All the contents of this journal are licensed under a 