Assessment of the surface roughness and hardness of acrylic resin after incorporation of sodium fluoride salts (An In-vitro Study)


  • marwah hussein college of health and medical techniques, Baghdad, Iraq



heat acrylic resin, sodium fluoride (NaF), hardness, roughness, deionized liquid


The control of oral hygiene is of great importance, particularly in dental work, to prevent caries caused by bacteria. One method to inhibit bacterial growth is usually by using fluoridated dental materials. The objectives are to assess the effect of sodium fluoride powder (NaF) inclusion with different concentrations on the surface roughness and hardness of heat-cured acrylic resins. A total of forty disc-shaped samples with a diameter of (12±0.1) mm and a thickness of (2±0.1) mm have been fabricated from heat cure acrylic resin. They were grouped into four subgroups according to different concentrations of NaF with 10 specimens for each group. Sodium fluoride powder (NaF) was incorporated into the monomer in concentrations of 0% (control group), 1%, 3%, and 5%. Then mixing was done with polymer according to manufacturer instructions and the conventional flasking, and packing procedures were used. Finally, the specimens are subjected to hardness and surface roughness tests. The results of this study revealed that the lowest mean value surface roughness (Ra) was with the (5%) group of NaF (7828). While, for the surface hardness test, the group (5%) of Naf showed the highest mean value among their subgroups (82.30).  According to the results of the current study, sodium fluoride powder (NaF) has a positive effect on both the surface roughness and hardness of acrylic resin.


Fejerskov O, Nyvad B, Kidd E. Dental caries: what is it. Dental caries: The disease and its clinical management. 2015:7-10.

Chapple IL, Van der Weijden F, Doerfer C, Herrera D, Shapira L, Polak D, et al. Primary prevention of periodontitis: managing gingivitis. Journal of Clinical Periodontology. 2015;42: S71-S6.

Vos T, Allen C, Arora M, Barber RM, Bhutta ZA, Brown A, et al. Global, regional, and national incidence, prevalence, and years lived with disability for 310 diseases and injuries, 1990–2015: a systematic analysis for the Global Burden of Disease Study 2015. The Lancet. 2016;388(10053):1545-602.

Al-Hasnawi KI, Al-Obaidi WA. Effect of Nd-YAG laser-irradiation on fluoride uptake by tooth enamel surface. J Bagh Coll Dentistry 2014; 26(1): 154-8.

Ali A. Evaluation of the effect of sodium fluoride addition on some mechanical properties of heat cure acrylic denture base materials. J Baghdad Coll Dent. 2014; 26:9-13.

Figuero E, Nobrega DF, García‐Gargallo M, Tenuta LM, Herrera D, Carvalho JC. Mechanical and chemical plaque control in the simultaneous management of gingivitis and caries: a systematic review. Journal of Clinical Periodontology. 2017;44: S116-S34.

Rashid AA-L. Effect of sodium fluoride on the properties of acrylic resin denture base material subjected to long-term water immersion. Journal of Baghdad college of dentistry. 2014;26(4):14-21

Al-Jorani LE,Al–Azzawi SI, Yaseen IN. Comparing and evaluating the Effect of the Air-Powder Polishing System on the Hot Cure Acrylic Denture Base Material Cured by Different Methods. Al Mustansiriyah Journal of Pharmaceutical Sciences. 2015;15(2):1-12.

Hussain WA, Hashim FS. Effect of additives on impact strength of denture base resin. Iraqi Journal of Science. 2017:860-7

Jasim BS, Ismail IJ. The effect of silanized alumina nano-fillers addition on some physical and mechanical properties of heat-cured polymethyl methacrylate denture base material. J Bagh Coll Dentistry 2014; 26(2): 18-32.

Abdulsattar MH. Assessment of The Mechanical and Color Changes Properties of Denture Base Material After Reinforcement with Nanoparticles Material. Tikrit Journal for Dental Sciences. 2023;11(1).

Abdul-Latif Rashid A, Mousa Ouda L. Effect of The Elevated Temperature on the Tensile Strength of Cold Cured Acrylic Denture Base in Comparison to Heat Cure Acrylic. journal of Kerbala University. 2011;7(1):126-33

Sabir DB, Omer ZQ. Evaluation of Fluoride release from the orthodontic acrylic resin by using two different polymerization techniques: An InVitro Study. Erbil Dental Journal (EDJ). 2019;2(1):149-56

Srithongsuk S, Anuwongnukroh N, Dechkunakorn S, Srikhirin T, Tua-Ngam P. Investigation of fluoride release from orthodontic acrylic plate. Advanced Materials Research. 2012; 378:681-7

Hachim TM, Abullah ZS, Alausi YT. Evaluation of the effect of the addition of polyester fiber on some mechanical properties of heat cure acrylic resin. J Bagh Coll Dentistry. 2013; 25:23-9

Wong M, Clarkson J, Glenny A-M, Lo E, Marinho V, Tsang B, et al. Cochrane reviews on the benefits/risks of fluoride toothpastes. Journal of dental research. 2011;90(5):573-9.

Alla R, Raghavendra K, Vyas R, Konakanchi A. Conventional and contemporary polymers for the fabrication of denture prosthesis: part I–overview, composition and properties. Int J Appl Dent Sci. 2015;1(4):82-9

Prapansilp W, Rirattanapong P, Surarit R, Vongsavan K. Fluoride release from different powder liquid ratios of Fuji VII. Mahidol Dental Journal. 2017;37(2):217-22.

Zahroon SFJ. Development of a novel acrylic resin as a fissure sealant: University of Newcastle upon Tyne; 2014.

Rashid AA-L. Influence of different concentrations of fluoride on the porosity of acrylic resin denture base materials. Iraqi Dental Journal. 2015;37(2):56-61




How to Cite

hussein, marwah. (2023). Assessment of the surface roughness and hardness of acrylic resin after incorporation of sodium fluoride salts (An In-vitro Study). Mustansiria Dental Journal, 19(2), 232–240.