The effect of TiO2 coating and coffee immersion on discoloration of thermoplastic nylon denture base

https://doi.org/10.22146/majkedgiind.40045

Rahmat Hidayat(1), Murti Indrastuti(2*), Heriyanti Amalia Kusuma(3), Suparyono Saleh(4)

(1) Departement of Prosthodontics, Faculty of Dentistry, Sultan – Agung Islamic University, Semarang,
(2) Departement of Prosthodontics, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta
(3) Departement of Prosthodontics, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta
(4) Departement of Prosthodontics, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta
(*) Corresponding Author

Abstract


The thermoplastic nylon denture base material is prone to discoloration because its amide bonds absorb water easily. Titanium dioxide (TiO2) nanoparticle have long been used as a denture base coating. Meanwhile, coffee contains chlorogenic and tanic acid, which can change the color of denture bases. The purpose of this study was to examine the effect TiO2 coating and duration of coffee immersion on discoloration of thermoplastic nylon denture base. Samples consisted of 24 thermoplastic nylon in square-shaped (30 x 30 x 2 mm), divided into 4 groups (n = 6). They were control (without TiO2 coating) and treatment (with TiO2 coating) groups, which then were immersed in coffee solution for 15 and 30 days. Discoloration test was conducted using spectrophotometer by measuring the delta absorbance of light before and after coffee immersion. The result showed that the lowest delta absorbance was in the 15-day treatment group (0.011 ± 0.005) and the highest was in the 30-day control group (0.077 ± 0.027). Two-way ANOVA test showed that TiO2 coating and coffee immersion had an effect on discoloration of thermoplastic nylon (p <0.05). Post hoc LSD test showed that there were significant differences between the control and treatment group at 15 and 30 days of coffee immersion (p <0.05). In conclusion, TiO2 as a thermoplastic nylon denture base coating can reduce discoloration by coffee immersion for 15 and 30 days. There were no differences between 15 and 30 days of coffee immersion on thermoplastic nylon’s discoloration in the control and treatment groups.


Keywords


coffee immersion; discoloration; spectrophotometer; thermoplastic nylon; titanium dioxide (TiO2) coating

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References

1. Gunadi HA, Margo A, Burhan LK, Suryatenggara F, Setiabudi I. Buku ajar ilmu
gigi tiruan sebagian lepasan. Jilid I Jakarta: Hipokrates; 2013: 11-12.

 

2. Anusavice KJ, Ralph WP, Chiayi S, H Ralph R. Phillips’ science of dental materials. St. Louis: Mosby Elsevier; 2013: 143-170.

 

3. Vojdani M, Rashin G. Polyamide as denture base material: literature review. J Dent Shiraz
Univ Med Sci. 2015; 16(1): 1-9.

 

4. McCabe JF, Walls WG. Applied dental material. 9th Edition. UK: Blackwell Munksgard; 2009:
100-110.

 

5. Shah J, Bulbule N, Kulkarni S, Shah R, Kakade D. Comparative evaluation of sorption,
solubility, and microhardness of heat cure polymethylmethacrylate and flexible denture
base resin. J Clin Diagn Res. 2014; 8(8):1-4.

 

6. Yunus N, Rashid AA, Azmil LL, Abu_hasan MM. Some flexural properties of a nylon
denture base polymer. J. Prosthet. Dent. 2005; 32(1): 65–71.

 

7. Takabayashi Y. Characteristic of denture thermoplastic resins for non-metal clasp
dentures. Dent Mater J. 2010; 29(4): 353-361.

 

8. Goiato MC. Santtos DM, Haddad MF, Pesquiera AA. Effect of accelerated aging
on the microhardness and color stability of flexible resins for dentures. J Braz Oral Res.
2010; 24 (1): 114-119.

 

9. Keyf F, Ilker E. Evaluation of gloss changes of two denture acrylic resin materials in four
different beverages. J Dental Materials. 2004; 20: 244-251.

 

10. Lai YL, Lui HF, Lee SY. In vitro color stability, stain resistance, and water sorption of four
removable gingival flane material. J Prosthet Dent. 2003; 90: 293-300.

 

11. Amaliyah R, Agus S, Lusi H. Plastic deformation of thermoplastic nylon after immersed in
robusta coffee bean extract. Jurnal Pustaka Kesehatan. 2015; 3(1): 117-121.

 

12. Guler AU, Yulmaz F, Kulunk T, Guler E, Kurt S. Effects of different drinks on stainability of resin composite provisional restorative materials. J Prosthet Dent. 2005; 94: 118-124.

 

13. Garcia LFR, Lourenco MRR, Fabrício MM, Fernanda CP, Simonides C. Influence of
artificial accelerated aging on dimensional stability of acrylic resins submitted to different
storage protocols. J Prosthodont. 2010; 19(6): 425-431.

 

14. Mori K. Color and glass evaluation of titanium dioxide coating for acrylic resin denture base. J Prosthodont Res. 2015; 59(4): 249-253.

 

15. Kubacka A, Diez MS, Rojo D, Bargiela R, Ciordia S, Zapico I, Albar JP, Barbas, C, Martins Dos Santos V. Fernandez-Garcia M, Ferrer M. Understanding the antimicrobial
mechanism of tio2-based nanocomposite films in a pathogenic bacterium. Scientific Reports.
2014; 4: 4134.

 

16. Shirkavand S, Moslehifard E. Effect of TiO2 nanoparticles on tensile strength of dental acrylic resins. J Dent Res Dent Clin Dent Prospects. 2014; 8: 197-203.

 

17. Uchimaru, M, Sakai T, Moroi R, Shiota S, Shibata Y, Deguchi M, Sakai H, Yamashita Y, Terada Y. Antimicrobial and antifungal effects if tissue conditioners containing a photocatalyst.
Dent Mater J. 2011; 30(5): 691-699.

 

18. Makihara E, Shin-ichi M, Masahiro A, Toshihiro T, Toshihiro K, Shuichiro H, Yukio T. Denture
plaque control on titanium dioxide coated acrylic resin plates. The Journal of The Kyushu
Dental Society. 2007; 61: 82-86.

 

19. Harini P, Mohamed K, Padmanabhan TV. Effect of titanium dioxide nanoparticles on the
flexural strength of polymethylmethacrylate: An in vitro study. Indian J Dent Res. 2014; 25(4): 459-463.

 

20. Zuo W, Feng D, Song A, Gong H, Zhu S. Effects of organic-inorganic hybrid coating
on the color stability of denture base resins. J Prosth Dent. 2016; 115(1): 103-108.

 

21. Feng DF, Gong H, Zhang J, Guo X. Effects of antibacterial coating on monomer exudation
and the mechanical properties of denture base resins. J Prosth Dent. 2016; 117(1): 171-177.

 

22. Grumezescu A. Nanobiomaterials in Dentistry: Applications of Nanobiomaterials, Elsevier.
Amsterdam. 2016. 49–77.

 

23. Brinker CJ, Scherer GW. Sol-gel Science: The physics and chemistry of sol–gel processing.
Academic, San Diego; 1990. 786-837.

 

24. Navarro WFS, Beatriz EAC, Cristiane PFB, Janaina HJ, Vanessa MU, Nara HC. Color
stability of resins and nylon as denture base material in beverages. J. Prosthodontic. 2011;
20: 632-638.



DOI: https://doi.org/10.22146/majkedgiind.40045

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