EFFECT OF LASER TREATMENTS ON THE STRENGTH OF DENTURE BASE REPAIR

Yıl 2014, Cilt: 24 Sayı: 1, 74 - 80, 11.02.2015

Fatih Korkmaz , Bora Bağış Elif Ayaz Sedanur Turgut Sabit Ateş Tamer Tuzumer

https://doi.org/10.17567/dfd.27008

Öz

Purpose: The aim of this study was to investigate the effect of Er;Cr;YSGG laser treatment with different energy levels before sandblasting and grinding on the transverse strength of denture base resin repaired with autopolymerizing resin. Material and Methods: A total of seventy rectangular specimens (65X10X3.3 mm) were prepared from heatpolymerized acrylic resin, which was repaired with autopolymerizing resin following conditioning methods: a) without surface treatment (control) b) grinding, c) sandblasting, d) Er;Cr;YSGG laser at 3 W-20 Hz + grinding, e) Er;Cr;YSGG laser at 3 W-20 Hz + sandblasting, f) Er;Cr;YSGG laser at 4 W-20 Hz + grinding, g) Er;Cr; YSGG laser at 4 W-20 Hz + sandblasting. The transvers strength was measured by a three-point bending test using a universal testing machine. Data were analyzed using 1-way ANOVA and Tukey’s Post Hoc test (p<0.05). Results: Er;Cr;YSGG laser application at 4 W-20Hz before sandblasting occured significantly higher values (30.48±7.66 MPa) when compared to the control group (15.48±4.32 MPa) (p<0.001). Grinding demonstrated the lowest values (9.38±4.62 MPa) among all the groups. Sandblasting showed significantly higher values than grinding (p<0.01). Laser application at 4W-20 Hz + sandblasting demonstrated significantly higher strength values than sandblasting alone (p<0.05). Conclusions: Surface pretreatments before repairing significantly affect the transvers strength of repaired denture base resin. Er;Cr;YSGG laser pretreatment at 4 W-20Hz before sandblasting may be useful to increase the transvers strength of denture base repairs

Anahtar Kelimeler

denture repair, lasers, acrylic resin

LAZER UYGULAMALARININ PROTEZ KAİDE TAMİRİNİN DAYANIMINA ETKİSİ

Öz

Amaç: Bu çalışmanın amacı, kumlama ve frezleme yapmadan önce değişik enerji seviyelerindeki Er;Cr;YSGG  lazer uygulamasının otopolimerizan akrilin transvers dayanımına olan etkisini incelemektir.

Gereç ve Yöntem: Toplam 70 adet dikdörtgen şeklindeki örnekler (65X10X3.3 mm) ısıyla polimerize olan akrilik rezinden üretilmiştir. Bu örnekler aşağıdaki yüzey işlemlerinden birini takiben otopolimerizan akril ile tamir edilmiştir: a) Herhangi bir yüzey işlemi yapılmamış (kontrol), b) Frezleme, c) Kumlama, d) Er;Cr;YSGG lazer (3 W-20 Hz)  + frezleme, e) Er;Cr; YSGG lazer (3 W-20 Hz)  + kumlama, f) Er;Cr;YSGG lazer (4 W-20 Hz)  + frezleme, g) Er;Cr;YSGG lazer (4 W-20 Hz)  + kumlama. Transvers dayanımı universal test cihazında 3 nokta bükme testi kullanılarak ölçülmüştür. Elde edilen veriler tek yönlü ANOVA ve Tukey’in  Post Hoc testi kullanılarak analiz edilmiştir.

Bulgular: Kumlama yapılmadan önce 4 W-20Hz’lik  Er;Cr;YSGG lazer  uygulaması (30.48±7.66 MPa)  kontrol grubuna (15.48±4.32 MPa)  göre daha yüksek değerler oluşturmuştur. Frezleme, tüm gruplar içinde en düşük sonuçlara neden olmuştur (9.38±4.62 MPa). Kumlama işlemi, frezleme işleminden anlamlı bir şekilde yüksek bulunmuştur (p<0.01). 4 W-20Hz’lik  Er;Cr;YSGG lazer + kumlama uygulaması sadece kumlama yapılan gruba göre daha yüksek çıkmıştır.

Sonuçlar: Tamir yapmadan önce akrilik kaide rezin yüzeyine uygulanan ön işlemler tamir dayanımını etkilemektedir. Kumlamadan önce 4 W-20 Hz’lik  Er;Cr;YSGG lazer uygulaması akrilik rezinin tamir dayanımını arttırmada faydalı olabilir.

Anahtar Kelimeler

protez tamiri, lazerler, akrilik rezin

Kaynakça

• Doğan A, Karacaer Ö, Doğan OM, Bolayır G, Bek B. Değişik konsantrasyonlarda cam fiberle güçlendirilen poli (metil metakrilat) protez kaide rezininin transvers dayanımına etkisi. Cumhuriyet Üniv Diş Hek Fak Derg 2007;10:20-5. yöntemlerinin farklı
• Vallittu PK, Lassila VP, Lappalainen R.Wetting the repair surface with methyl methacrylate affects the transverse strength of repaired heat-polymerized resin. J Prosthet Dent 1994;72:639-43.
• Minami H, Suzuki S, Minesaki Y, Kurashige H, Tanaka T. In vitro evaluation of the influence of repairing condition of denture base resin on the bonding of autopolymerizing resins. J Prosthet Dent 2004;91:164-70.
• Sarac D, Sarac YS, Külünk Ş, Külünk T, Ural Ç. Farklı sürelerde metilen klorid uygulamasının otopolimerizan akrilin kaide materyaline bağlanma dayancı üzerine etkisi. Gazi Üniv Diş Hek Fak Derg 2005; 22: 157-61.
• Dinçkal N, Aladağ Lİ. Tamir edilmiş akriliklerin kırılma direnci üzerine tamir materyalinin, kırık yüzey şeklinin ve saklama ortamının etkisinin incelenmesi. Atatürk Üniv Dis Hek Fak Derg 1996;6:31-6
• Pereira Rde P, Delfino CS, Butignon LE, Vaz MA, Arioli-Filho JN. Influence of surface treatments on the flexural strength of denture base repair. Gerodontology 2012;29:234-8.
• Seo RS, Neppelenbroek KH, Filho JNA. Factors affecting the strength of denture repairs. J Prosthodont 2007;16:302-10.
• Elhadiry SS, Yunus N, Ariffin YT. Effect of cavity preparation on the flexural strengths of acrylic resin repairs. J Appl Oral Sci 2010;18:546-50.
• Aladağ Lİ, Yılmaz A. Fiber ile güçlendirilmiş kompozit rezin ve geleneksel tamir materyalleriyle tamir edilen akrilik rezinlerin dirençlerinin incelenmesi. Atatürk Üniv Dis Hek Fak Derg
• Keyf F, Uzun G. The effect of glass fibre- reinforcement on the transverse strength, deflection and modulus of elasticity of repaired acrylic resins. Int Dent J 2000;50:93-7.
• Bural C, Bayraktar G, Aydin I, Yusufoğlu I, Uyumaz N, Hanzade M. Flexural properties of repaired heat-polymerising acrylic resin after wetting with monomer 2010;27:217-23. Gerodontology
• Gulve M, Gulve N. Effect of joint surface treatment on the flexural strength of repaired auyo- polymerized acrylic resin. The Int J Dent Sci 2011;9: Doı:10.5580/2123
• Thunyakitpisal N, Thunyakitpisal P, Wiwatwarapan C. The effect of chemical surface treatments on the flexural strength of repaired acrylic denture base resin. J Prosthodont 2011;20:195-9.
• Vallittu PK, Lassila VP, Lappalainen R. Wetting the repair surface with methyl methacrylate affects the transverse strength of repaired heat-polymerized resin. J Prosthet Dent 1994;72:639-43.
• Sarac YS, Sarac D, Kulunk T, Kulunk S.The effect of chemical surface treatments of different denture base resins on the shear bond strength of denture repair. J Prosthet Dent 2005;94:259-66
• Pereira R de P, Delfino CS, Butignon LE, Vaz MA, Arioli-Filho JN. Influence of surface treatments on the flexural strength of denture base repair. Gerodontology 2012;29:234-8.
• Shen C, Colaizzi FA, Birns B. Strength of denture repairs as influenced by surface treatment. J Prosthet Dent 1984;52:844-8.
• Memarian M, Shayestehmajd M. The effect of chemical and mechanical treatment of the denture base resin surface on the shear bond strength of denture repairs. Rev Clin Pesq Odontol 2009;5:11- 7.
• Jagger RG, al-Athel MS, Jagger DC, Vowles RW. Some variables influencing the bond strength between PMMA and a silicone denture lining material. Int J Prosthodont 2002;15:55-8.
• Usumez A, Inan O, Aykent F. Bond strength of a silicone lining material to alumina abraded and lased denture resin. J Biomed Mater Res B Appl Biomater 2004;71:196-200.
• Jacobsen NL, Mitchell DL, Johnson DL, Holt RA. Lased and sandblasted denture base surface preparations affecting resilient liner bonding. J Prosthet Dent 1997;78:153-8.
• Tugut F, Akin H, Mutaf B, Akin GE, Ozdemir AK. Strength of the bond between a silicone lining material and denture resin after Er:YAG laser treatments with different pulse durations and levels of energy. Lasers Med Sci 2012;27:281-5.
• Akin H, Tugut F, Mutaf B, Akin G, Ozdemir AK. Effect of different surface treatments on tensile bond strength of silicone-based soft denture liner. Lasers Med Sci 2011;26:783-8.
• Süske E, Scharf T, Schaaf P, Panchenko E, Nelke D, Buback M, Kijewski H, Krebs HU. Variation of mechanical properties of pulsed laser deposited PMMA films during annealing, Appl Phys A 2004;79;1295-7.
• Bolayir G, Turgut M, Hubbezoglu I, Dogan OM, Keskin S, Dogan A, Bek B. Evaluation of laser treatment on reline-base composites. J Adhesion 2007;83:117–27.
• Storer R. Resilient denture base materials. Part 1, introduction and laboratory evalution. Br Dent J 1962;113:195-203.
• Craig RG, Gibbons P. Properties of resilient denture liners. J Am Dent Assoc 1961;63:382-90.
• Katsumata Y, Hojo S, Hamano N, Watanabe T, Yamaguchi H, Okada S, Teranaka T, Ino S. Bonding strength of autopolymerizing resin to nylon denture base polymer. Dent Mater J 2009;28:409-18.
• Lin S, Caputo AA, Eversole LR, Rizoiu I. Topograp- hical characteristics and shear bond strength of tooth surfaces cut with a laser-powered hydro- kinetic system. J Prosthet Dent 1999;82:451-5.
• Baygin O, Korkmaz FM, Tüzüner T, Tanriver M. The effect of different enamel surface treatments on the microleakage of fissure sealants. Lasers Med Sci 2012;27:153-60.
• Usumez A, Aykent F. Farklı asitler ve Er, Cr: YSGG lazer sistemi ile pürüzlendirilen diş yüzeylerine uygulanan makaslama bağlantılarının karşılaştırılması. T Klin J Dental Sci 2003;9:1-8. laminate veneerlerin
• Karaman E, Yazıcı R, Gorucu J, Beseren M. Farklı pürüzlendirme yöntemleriyle uygulanan fissür örtücülerin 18 aylık klinik performanslarının değer- lendirilmesi. Gazi Üniv Diş Hek Fak Derg
• Ramos TM, Ramos-Oliveira TM, Moretto SG, de Freitas PM, Esteves-Oliveira M, de Paula Eduardo C. Microtensile bond strength analysis of adhesive systems to Er:YAG and Er,Cr:YSGG laser-treated dentin. Lasers Med Sci 2014; 29:565-73.
• Al-Rifaiy MQ. The effect of mechanical and chemical polishing techniques on the surface roughness of denture base acrylic resins. Saudi Dent J 2010;22:13-7
• International Organization for Standardization. Specefication 1567: Denture base polymers (ed 2). Geneva, Switzerland, 1988, pp.1-9.
• Machado AL, Breeding LC, Puckett AD. Effect of microwave disinfection on the hardness and adhesion of two resilient liners. J Prosthet Dent 2005;94:183-9.
• Amin WM, Fletcher AM, Ritchie GM. The nature of the interface between polymethyl methacrylate denture base materials and soft lining materials. J Dent 1981;9:336-46.
• Lawrance J, Li L. Modification of the wettability characteristics of polymethyl methacrylate (PMMA) by means of CO2, Nd: YAG, excimer and high power diode laser irradiation. Mater Sci Eng A 2001;303:142-9.
• Delfino CS, Souza-Zaroni WC, Corona SA, Palma- Dibb RG. Microtensile bond strength of composite resin to human enamel prepared using erbium: Yttrium aluminum garnet laser. J Biomed Mater Res A 2007;80:475-9.