Effects of Newer Bleaching Materials Paint-on on the Surface Hardness of Various Restorative Materials

Year 2005, Volume: 32 Issue: 1 - Volume: 32 Issue: 1, 9 - 17, 01.02.2005

Arzu Müjdeci

Abstract

The purpose of this in vitro study was to evaluate the effects of new three paint-on bleachingmaterials on surface hardness of a composite resin,a compomer and a high-viscosity glass ionomercement. Fifty cylindrical samples of each restorativematerial were prepared and randomly divided intofive groups n=10 . One group were selected forbaseline and Vickers microhardness measurementswere taken. The other three groups were treatedwith one of three paint-on bleaching agents.Remaining group were selected as control and notsubjected to bleaching treatment. The treated and control samples were alsosubsequently subjected to same microhardness testing by using the same method applied to the baseline measurements. Data were analyzed statistically. Overall, a decrease in surface hardness wasnoted in all of the bleaching groups. Surface hardness differences were also found between restorative materials. The highest hardness was observedin composite resin while the lowest was for glassionomer. It was observed that the effects of paint-onbleaching agents on surface hardness were dependent upon restorative materials

Keywords

Bleaching, surface hardness, restorative materials

YENİ AĞARTICI AJANLARIN PAINT-ON ÇEŞİTLİ RESTORATİF MATERYALLERİN YÜZEY SERTLİKLERİ ÜZERİNE ETKİLERİ

Abstract

Bu çalışmanın amacı, 3 paint-on ağartıcıajanın bir kompozit rezin, bir kompomer ve bir yüksek viskoziteli cam iyonomer siman›n yüzey sertliği üzerine etkisini değerlendirmekti. Her bir restoratif materyale ait 50 örnek haz›rland› ve rasgele 5’er gruba ayr›ld› n:10 . Bir grup başlang›ç ölçümü için değerlendirildi ve Vickers yüzey sertlik ölçümü al›nd›. Diğer 3 gruptaki örneklere 3 paint-on ağartma ajanlar›ndan biri uyguland›. Kalan son grup kontrol grubu olarak değerlendirildi ve herhangi bir ağartma işlemi uygulanmad›. Kontrol ve tedavi grubu örnekleri başlang›ç ölçümleri ile ayn› şekilde yüzey sertlik ölçümüne maruz b›rak›ld›. Veriler istatistiksel olarak analiz edildi. Toplamda, tüm ağartma gruplar›nda yüzey sertliğinde azalma kaydedildi. Restoratif materyaller aras›nda da yüzey sertliğinde farkl›l›klar izlendi. En düşük yüzey sertliği cam iyonomer simanda, en yüksek de kompozit rezinde görüldü. Ayr›ca, ağartma ajanlar›n›n yüzey sertliği üzerine etkisinin, kullan›lan restoratif materyale bağl› olduğu bulundu.

Keywords

Ağartma, yüzey sertliği, restoratif materyaller

References

• Haywood VB, Heymann HO. Nightguard vital bleaching. Quintessence Int 1989; 20:173-6.
• Haywood VB, Heymann HO. Nightguard vital bleaching: how safe is it? Quintessence Int 1991;22:515-23.
• McEvoy SD. Chemical agents for removing extrinsic stains from vital teeth. I. Technique devel- opment. Quintessence Int 1989; 20:323-8.
• Rotstein I, Lehr Z, Gedalia I. Effect of bleaching agents on inorganic components of human dentin and cementum. J Endod 1992; 18:290-3.
• Sagel PA, Odioso LL, McMillan DA, Gerlach RW: Vital tooth whitening with a novel hydrogen peroxide strip system: design, kinetics and clinical response. Compend Contin Educ Dent 2000; 21 (suppl 29):10-15
• Fasanaro TS. Bleaching teeth: History, chemicals and methods used for common tooth dis- colorations. J Esthet Dent 1992; 4:71-8.
• Gerlach RW. Shifting paradigms in whiten- ing: Introduction of a novel system for vital tooth bleaching. Compend Contin Educ Dent 2000; 21:S4- 9.
• Gerlach RW, GibbRD, Sagel PA. A random- ized clinical trial comparing a novel 5.3%HP whiten- ing strip to 10%,15% and 20% carbamide peroxide tray-based bleaching systems. Compend Contin Educ Dent 2000; 21(Suppl 29):22-8.
• Gerlach RW, Barker ML. Professional vital bleaching using a thin and concentrated peroxide gel on whitening strips: An integrated clinical summary. J Contemp Dent Pract 2004; 5: 1-17.
• Gerlach RW, Gibb RD, Sagel PA. Initial color change and color retention with a hydrogen peroxide bleaching strip. Am J Dent 2002; 15: 3-7.
• Nathoo S, Giniger M, Proskin HM, Stewart B, Robinson R, Collins M, DeVizio W, Petrone M, Volpe AR. Comparative 3-week clinical tooth shade evaluation of a novel liquid whitening gel containing 18% carbamide peroxide and a commercially avail- able whitening dentifrice. Compend Contin Educ Dent 2002;23(suppl 1):12-7.
• Ayad F, Giniger M, Proskin HM, Curtis JP, Santarpia PP, Stewart B, DeVizio W, Petrone M, Volpe AR Clinical comparison of the stain removal efficacy of a novel liquid whitening gel containing 18%carbamide peroxide and a commercially avail- able whitening dentifrice. Compend Contin Educ Dent 2002;23(suppl 1):18-25.
• Slezak B, Santarpia P, Xu T, Monsul- Barnes V, Hev RT, Stranick M, Sullivan R, Petrou J, Bagley D, Li Y. Safety profile of a new liquid whitening gel. Compend Contin Educ Dent 2002;23:4-11.
• Kaneko J, Inoue S, Kawakami S, Sano H. Bleaching effect of sodium percarbonate on discol- ored pulpless teeth in vitro. J Endod 2000;26:25-8.
• Curtis JW, Dickinson GL, Downey MC, Russell CM, Haywood VB, Myers ML, Johnson MH. Assessing the effects of 10 percent carbamide peroxide on oral soft tissues. J Am Dent Assoc 1996; 127:1218-23.
• Matis BA, Cochran MA, Eckert G, Carlson TJ. The efficacy and safety of a 10% carbamide per- oxide bleaching gel. Quintessence Int 1998; 29:555- 63.
• Wattanapayungkul P, Yap AUJ. Effects of in-office bleaching products on surface finish of tooth-colored restorations. Oper Dent 2003; 28: 15- 19.
• Swift JE, Perdigao J. Effects of bleaching on teeth and restorations. Compend Contin Edue Dent 1998; 19:815-20.
• Campos I, Briso AL, Pimenta LA, Ambrosano G. Effects of bleaching with carbamide peroxide gels on microhardness of restoration mate- rials. J Esthet Restor Dent 2003; 15: 175-82.
• Turker ŞB, Biskin T. Effect of three bleach- ing agents on the surface properties of three different esthetic restorative materials. J Prosthet Dent 2003; 89: 466-73.
• Bailey SJ, Swift EJ. Effects of home bleach- ing products on composite resins. Quintessence Int 1992; 23: 489-94.
• Cooley RL, Burger KM. Effect of car- bamide peroxide on composite resins. Quintessence Int 1991; 22: 817-21.
• Willems G, Celis JP, Lambrechts P, Braem M, Vanherle G. Hardness and Young’s modulus determined by nanoindentation technique of filler particles of dental restorative materials compared with human enamel. J Biomed Mater Res 1993; 27: 747-55.
• Nathoo SA, Chmielewski MB, Kirkup RE. Effects of Colgate platinum professional tooth whitening system on microhardness of enamel, dentin and composite resins. Compend Contin Educ Dent 1994; 17; 627-30.
• Anusavice KL. Mechanical properties of dental materials. Phillip’s Science of Dental Materials. Philadelphia; WB Saunders Co, 1996; 69.
• Yap AUJ. Post-irradiation hardness of resin-modified glass ionomer cements and a polyacid modified composite. Journal of Materials Science in Medicine 1997; 8:413-6.
• Wan ACA, Yap AUJ, Hastings GW. Acid- base complex reactions in resin modified and hybrid glass ionomer cements. J Biomed Mater Res (Applied Biomaterials) 1999; 48:700-4.
• Kao EC, Rezvan E, Johnston WM. Microhardness as an indicator for finishing time in ionomer restoratives. J Dent Res 1994; 73:220 (Abstract no:945).
• Uhl AM, Michaelis C, Mills RW, Janddt KD. The influence of storage and indenter load on the Knoop hardness of dental composites polymer- ized with LED and halogen technologies. Dent Mater 2004; 20:21-8.
• García-Godoy F, García-Godoy A, García- Godoy F. Effect of bleaching gels on the surface roughness, hardness, and micromorphology of com- posites. Gen Dent 2002; 50: 247-50.
• Gökay O, Müjdeci A. Effects of home bleaching gels and whitening strips on the surface hardness of composite resins. Am J Dent (baskıda).
• White DJ, Kozak KM, Zoladz JR, Duschner HJ. Impact of Crest Night Effects bleaching gel on dental enamel, dentin and key restorative materials. In vitro studies. Am J Dent 2003; 16:22-78.
• Lee JH, Kim HI, Kim KH, Kwon YH. Effect of bleaching agents on the fluoride release and microhardness of dental materials. J Biomed Mater Res 2002; 63:535-41.
• Jung CB, Kim HI, Kim KH, Kwon YH. Influence of 30% hydrogen peroxide bleaching on compomers in their surface modifications and ther- mal expansion. Dent Mater J 2002; 21:396-403
• Geurtsen W, Leyhausen G, Garcia-Godoy F. Effect of storage media on the fluoride release and surface microhardness of four polyacid-modified composite resins ("compomers"). Dent Mater 1999;15:196-201
• Yap AUJ, Khor E, Foos H. Fluoride release and antibacterial properties of new-generation tooth- colored restoratives. Oper Dent 1999; 24: 297-305.
• Söderholm KJM. Leaking of fillers in den- tal composites. J Dent Res 1983; 62:126-30.
• Yap AUJ, Wattanapayungkul P. Effects of in-office tooth whiteners on hardness of tooth-col- ored restoratives. Oper Dent 2002; 27:137-41.
• Dupuis M, Moya F, Bartala M. Depth microhardness of glass ionomer cements Biomaterials 1996 ; 17 :71- 4.
• Mair L, Joiner A. The measurement of degradation and wear of three glass ionomers fol- lowing peroxide bleaching. J Dent 2004; 32(Suppl 1):41-5.
• Jefferson KL, Zena RB, Giammara B. Effects of carbamide peroxide on dental luting agents. J Endodon 1992; 18:128-32.
• Price RBT, Sedarous M, Hiltz GS. The pH of tooth whitening products. J Can Dent Assoc 2000; 66:421-6.