López FAI, González FA, Scougall VRJ, Toral RVH, Jiménez ID

Language: Spanish
References: 13
Page: 233-239
PDF size: 220.78 Kb.

ABSTRACT

Nanotechnology is aimed at the manufacture of particles with unique properties. In composite resins this technology improves mechanical properties, extends service life and increases antibacterial properties. Objective: To know the effect that silver nanoparticles (Ag NPs) have on Vickers microhardness (VHN) of composite resins. Hypothesis: a coating of silver nanoparticles immersed in a hydrophilic adhesive produces greater VHN in composite resins. Material and methods: A total of 15 blocks of composite resin were made in cubic molds. Five were manufactured with composite resin alone (group I), five with composite resin plus a coating of a hydrophilic adhesive agent (group II), and five with composite resin plus a coating of Ag NPs immersed in a hydrophilic adhesive agent (group III). Fifty indentations were analyzed in each group. Statistical analysis was performed using one-factor ANOVA test with a p ≤ 0.05 significance. In addition, color change of the composite resin blocks was evaluated. Results: VHN in group III was significantly higher compared with that in the other groups; however, white pigmentations were observed on the blocks where the Ag NPs coating was applied. Conclusions: Adding a coating of Ag NPs immersed in a hydrophilic adhesive increases significantly the VHN, but as an adverse effect this procedure causes color changes on the surface of application.

REFERENCES

1. Grumezescu A. Nanobiomaterials in dentistry: applications of nanobiomaterials. 6th edition. Rumania: Elsevier; 2016. pp. 1-11, 107-114, 135-143, 223, 311-315, 390, 432-434, 446.

2. Martínez HR, Abdala HM, Treviño E, Garza G, Pozas A, Rivera G. Aplicación de la nanotecnología en odontología: Nano-odontología. Rev CES Odont. 2011; 24 (2): 87-91.

3. Mohamed-Hamouda I. Current perspectives of nanoparticles in medical and dental biomaterials. J Biomed Res. 2012; 26 (3): 143-151.

4. Alla RK, Swamy KR, Vyas R, Konakanchi A, Guduri V, Gadde P. Influence of Silver nanoparticles incorporation on flexural strength of heat-cure acrylic denture base resin materials. Annual Research & Review in Biology. 2017; 17 (4): 1-8.

5. Noronha VT, Paula AJ, Durán G, Galembeck A, Cogo-Müller K, Franz-Montan M et al. Silver nanoparticles in dentistry. Dent Mater. 2017; 33 (10): 1110-1126.

6. Cova JL. Biomateriales dentales. 2a edición. Caracas, Venezuela: Amolca; 2009. pp. 245-278.

7. Barceló-Santana FH, Calero JM. Materiales dentales conocimientos básicos aplicados. México, Argentina, España, Colombia, Puerto Rico, Venezuela: Trillas; 2008. pp. 105-120.

8. Reis A, Loguercio AD. Materiales dentales directos de los fundamentos a la aplicación clínica. Sao Paulo, Brasil: Gen Editorial Nacional, Santos Editora; 2012. pp. 137-216.

9. Kenneth J. Anusavice. Phillips Ciencia de los materiales dentales. 11o edición. Málaga, España; Elsevier Saunders; 2004. pp. 77-99, 381-389.

10. Gnjato S. Addition to the methodology of research into permanent teeth hardness. Arch Biol Sci. 2010; 62 (3): 739-746.

11. Seow WK, Amaratunge A. The effects of acid-etching on enamel from different clinical variants of amelogenesis imperfecta: an SEM study. Pediatr Dent. 1998; 20 (1): 37-42.

12. Chuenarrom C, Benjakul P, Daosodsai P. Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin. Materials Research. 2009; 12 (4): 473-476.

13. Park SH, Krejci I, Lutz F. Hardness of celluloid strip-finished or polished composite surfaces with time. J Prosthet Dent. 2000; 83 (6): 660-663.