Effect of Nano-filled Protective Coating on Microhardness and Wear Resistance of Glass-ionomer Cements
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The purpose of this study was to investigate the effect of adding a protective coating on the microhardness and wear resistance of glass ionomer cements (GICs). Specimens were prepared from GIC and resin-modified GIC (RMGI), and divided into 3 groups based on surface protection: (1) no coating (NC), (2) Equia coat coating (EC), and (3) un-filled adhesive coating (AD). All specimens were then placed in distilled water for 24 h. Surface hardness (n = 10) was evaluated on a Vickers hardness testing machine. Wear resistance (n = 10) was evaluated after subjecting the specimen to thermocycling for 10,000 cycles using a chewing simulator. Data were analyzed using a one-way ANOVA and the Kruskal-Wallis test. Surface hardness was highest in the NC groups, followed by the EC and AD groups. The wear depth of GI + NC was significantly higher than that of all RMGI groups. EC did not significantly lower the wear depth compared to AD. Based on these results, it was concluded that although EC does not increase the surface microhardness of GIC, it can increase the wear resistance.
Abstract
The purpose of this study was to investigate the effect of adding a protective coating on the microhardness and wear resistance of glass ionomer cements (GICs). Specimens were prepared from GIC and resin-modified GIC (RMGI), and divided into 3 groups based on surface protection: (1) no coating (NC), (2) Equia coat coating (EC), and (3) un-filled adhesive coating (AD). All specimens were then placed in distilled water for 24 h. Surface hardness (n = 10) was evaluated on a Vickers hardness testing machine. Wear resistance (n = 10) was evaluated after subjecting the specimen to thermocycling for 10,000 cycles using a chewing simulator. Data were analyzed using a one-way ANOVA and the Kruskal-Wallis test. Surface hardness was highest in the NC groups, followed by the EC and AD groups. The wear depth of GI + NC was significantly higher than that of all RMGI groups. EC did not significantly lower the wear depth compared to AD. Based on these results, it was concluded that although EC does not increase the surface microhardness of GIC, it can increase the wear resistance.
참고문헌 (27)
- Mount GJ, "Glass-ionomer restorative cements : clinical implications of the setting reaction", Oper Dent, 7, pp.134~141 (1982)
- Catelan A, "Effect of artificial aging on the roughness and microhardness of sealed composites", J Esthet Restor Dent, 22, pp.324~330 (2010)
- Marquezan M, "Resistance to degradation of bonded restorations to simulated caries-affected primary dentin", Am J Dent, 23, pp.47~52 (2010)
- Francci C, "Fluoride release from restorative materials and its effects on dentin demineralization", J Dent Res, 78, pp.1647~1654 (1999)
- Bonifácio CC, "Coating glass-ionomer cements with a nanofilled resin", Acta Odontol Scand, 70, pp.471~477 (2012)
- van Duinen RN, "Early and long-term wear of ‘fast-set’ conventional glass-ionomer cements", Dent Mater, 21, pp.716~720 (2005)
- de Gee AJ, "Early and long-term wear of conventional and resin-modified glass ionomers", J Dent Res, 75, pp.1613~1619 (1996)
- Lacy AM, "Modern concepts and materials for the pediatric dentist", Pediatr Dent, 18, pp.469~478 (1996)
- Kim GS, "The effect of various surface coatings on microleakage and microhardness of light-cured glass ionomer restoration", J Korean Acad Pediatr Dent, 24, pp.495~510 (1997)
- Lohbauer U, "Dental Glass Ionomer Cements as Permanent Filling Materials?-Properties, Limitations Future Trends", Materials(Basel), 3, pp.76~96 (2010)
- Kishore G, "Comparative Evaluation of Fluoride Releasing Ability of Various Restorative Materials after the Application of Surface Coating Agents - An In-vitro Study", J Clin Diagn Res, 10, pp.ZC38~ZC41 (2016)
- 정유석, "A study on the in-vitro wear of the natural tooth structure by opposing zirconia or dental porcelain", The Journal of Advanced of Prosthodontics, 2(3), pp.111~115 (2010), 대한치과보철학회[DOI]
- Park JH, "Antagonist wear of three CAD", CAM anatomic contour zirconia ceramics, 2014, pp.111, 20~29
- Leirskar J, "The influence of resin coating on the shear punch strength of a high strength auto-cure glass ionomer", Dent Mater, 19, pp.87~91 (2003)
- McLean JW, "The clinical development of the glass-ionomer cements. i. Formulations and properties", Aust Dent J, 22, pp.31~36 (1977)
- Mitra SB, "Long-term mechanical properties of glass ionomers", Dent Mater, 10, pp.78~82 (1994)
- Gemalmaz D, "Effect of early water contact on solubility of glass ionomer luting cements", J Prosthet Dent, 80, pp.474~478 (1998)
- Uno S, "Long-term mechanical characteristics of resin-modified glass ionomer restorative materials", Dent Mater, 12, pp.64~69 (1996)
- Miyazaki M, "Effect of surface coatings on flexural properties of glass ionomers", Eur J Oral Sci, 104, pp.600~604 (1996)
- Faraji F, "Effect of protective coating on microhardness of a new glass ionomer cement : Nanofilled coating versus unfilled resin", J Conserv Dent, 20, pp.260~263 (2017)
- Kim KH, "The effect of filler loading and morphology on the mechanical properties of contemporary composites", J Prosthet Dent, 87, pp.642~649 (2002)
- Shinkai K, "Effect of filler size and filler loading on wear of experimental flowable resin composites", J Appl Oral Sci, 26, pp.e20160652~ (2018)
- Croll TP, "Glass ionomer cements in pediatric dentistry : review of the literature", Pediatr Dent, 24, pp.423~429 (2002)
- Frencken JE, "The ART approach using glass-ionomers in relation to global oral health care", Dent Mater, 26, pp.1~6 (2010)
- Zhao J, "A novel high-wear-resistant glassionomer cement for class I and class II restorations", Eur J Oral Sci, 117, pp.86~89 (2009)
- Kunzelmann KH, "Two-body and threebody wear of glass ionomer cements", Int J Paediatr Dent, 13, pp.434~440 (2003)
- Hotta M, "Effect of coating materials on restorative glass-ionomer cement surface", Oper Dent, 17, pp.57~61 (1992)