YAŞLANDIRMA SONRASI YÜZEY İŞLEMLERİNİN, ZİRKONYUM OKSİT SERAMİKLERİN BAĞLANTI DİRENCİ ÜZERİNE ETKİSİ

Öz

Bu çalışmanın amacı farklı yüzey işlemleri uygulanmış zirkonya seramiğe rezin siman bağlantısının değerlendirilmesidir. Final boyutu 10 x 10 x 2mm olan toplam 72 adet zirkonya örnek elde edilmiştir. Farklı yüzey hazırlıklarına tabi tutulmak üzere rastgele 12’şerli 6 gruba ayrılan örneklerden 1.grup yüzey işlemi uygulanmadan kontrol grubu olarak ayrıldı. 110 µ’lukAl2O3 kumu ile pürüzlendirilen örnekler 2. grubu ve 110 µ’lukAl2O3 kumu ile pürüzlendirildikten sonra silika kaplanan ve silan uygulanan örnekler ise 3.grubu oluşurdu. 4.gruptaki örneklere ise çift kat Zirconia Primer uygulandı. Hava ile 10 sn kibarca kurutuldu 20 sn 800 mW/cm2 ışıkla polimerize edildi.5. gruptaki örnekler, Nd: YAG lazer cihazı kullanılarak pürüzlendirildiler. Cihazın paneli 20 Hz, 100mJ, 2W, 100µs olacak şekilde ayarlandı. 6. gruptaki örneklerde cihaz; 20 Hz, 150mJ 3W 100µs olarak ayarlandı. Yüksekliği 3mm ve çapı 3.6mm olan siman bloklar Panavia F 2.0 (Kuraray Medical Inc., Japonya) rezin simandan üretildi vezirkonya örneklere simante edildi. Örnekler 2 hafta oda sıcaklığındaki suda bekletildikten sonra termal döngü cihazında, 5-55 ºC’de, 6000 döngü uygulandı. Örnekler yarıçapı ve yüksekliği 1cm olan akrilik bloklara yerleştirilerek makaslama testine tabi tutuldu. Bağlanma değeri verileri tek yönlü varyans analizi ve Duncan testi kullanılarak analiz edildi (a=.05). Her grubun ortalamaları tek yönlü varyans analizi ile değerlendirildi.Buna göre en yüksek değerler 3. grupta bulunmuş, bunu 6. grup takip etmiştir. En düşük değer ise kontrol grubunda bulunmuştur. Örnekler taramalı elektron mikroskobunda (SEM) ve Atomik kuvvet mikroskobunda (AFM ) incelenmiş, profilometre cihazında pürüzlülük değerleri ölçülmüştür.

Anahtar Kelimeler

• dental yüzey işlemi
• Nd: YAG Lazer,
• zirkonya

THE EFFECT OF SURFACE TREATMENTS ON BOND STRENGTH OF ZIRCONIUM OXIDE CERAMICS AFTER AGING

Öz

The aim of this study was to compare the effects of surface treatment methods on the bond strength of zirconium-oxide ceramic to a resin luting agent. Seventy-two square-shaped (10 x 10 x 2mm) zirconium-oxide ceramic specimens and resin cement cylinders were prepared. The speciments divided into 6 groups (n=12) that were subsequently treated as follows: Group 1, no treatment ; Group 2, the ceramic surfaces were airborne-particle abraded with 110µ aluminum-oxide (Al2O3) particles; Group 3, after abrasion of the surfaces with 110µ Al2O3particles, silica coating using 30µ (Al2O3) particles modified by silica and application of the silane coupling agent; Group 4; application of a Zirconia Primer agent; Group 5, ceramic surfaces irritated with Nd:YAG laser (Fidelis Plus 3 Fotona at 20 Hz, 100mJ, 2W, 100µs; Group 6, ceramic surfaces irritated with Nd:YAG laser at 20 Hz, 100mJ, 2W, 100µs. The resin cement cylinders were bonded to the treated ceramic surfaces. After the specimens were stored in distilled water at 37ºC for 2 weeks, groups were subjected to thermo cycling for 6.000 cycles between 5 and 55 ºC in water. Their shear bonding strength was tested using a universal testing machine. Bond strength data were analyzed using 1-way analysis of variance and the Duncan test, (a=.05),the means of each group were analysed by one-way analysis of variance (ANOVA). The bond strength was significantly higher in Group3 and Group6 respectively. Lowest bond strength value was encountered in control group. Debonded specimen surfaces were observed by SEM and AFM.

Anahtar Kelimeler

• Dental surface conditioning
• Nd: YAG Laser
• zirconia

Kaynakça

1. Ozcan M, Vallittu PK. Effect of surface conditioning methods on the bond strength of luting cement to ceramics. Dent Mater 2003;19(8):725-31. PMID: 14511730
2. Gamborena I B. A clinical guide to predictable esthetics with zirconium oxide ceramic restorations. Quintessence Dent Technol 2006;29:11-23.
3. GlauserR W, Studer S. Application of zirconia abutments on single tooth implants in the maxillary esthetic zone. A 6-year clinical and radiographic follow up report. Appl Osseointegration Res 2004;4:41-5.
4. Kern M. Clinical long-term survival of two-retainer and single-retainer all-ceramic resinbonded fixed partial dentures. Quintessence Int 2005;36(2):141-7. PMID: 15732550
5. Derand P, Derand T. Bond strength of luting cements to zirconium oxide ceramics Int J Prosthodont. 2000; 13(2):131-5. PMID: 11203621
6. Burke FJ, Fleming GJ, Nathanson D, Marquis PM. Are adhesive technologies needed to support ceramics? An assessment of the current evidence. J Adhes Dent 2002; 4(1):7-22. PMID: 12071631
7. Atsu SS, Kilicarslan MA, Kucukesmen HC, Aka PS. Effect of zirconium-oxide ceramic surface treatments on the bond strength to adhesive resin. J Prosthet Dent 2006; 95(6):430-6. PMID: 16765155 doı: 10.1016/j.prosdent.2006.03.016
8. Guazzato M, Albakry M, Quach L, Swain MV. Influence of grinding, sandblasting, polishing and heat treatment on the flexural strength of a glass-infiltrated aluminareinforced dental ceramic. Biomaterials 2004; 25(11):21 PMID: 14741630 doı: 10.1016/j.biomaterials.2003.08.056

9. Lin J, Shinya A, Gomi H, Shinya A. Effect of self-adhesive resin cement and tribochemical treatment on bond strength to zirconia. Int J Oral Sci. 2010;2:28-34. PMID: 20690416
10. Albakry M, Guazzato M, Swain MV. Effect of sandblasting, grinding, polishing and glazing on the flexural strength of two pressable all-ceramic dental materials. J Dent 2004; ;32(2):91-9. PMID: 14749080 doı: 10.1016/j.jdent.2003.08.006
11. Blatz MB, Sadan A, Kern M. Resin-ceramic bonding: a review of the literature. J Prosthet Dent 2003; 89(3):268-74. PMID: 12644802 DOI: 10.1067/mpr.2003.50
12. Blatz MB, Sadan A, Blatz U. The effect of silica coating on the resin bond to the intaglio surface of Procera AllCeram restorations. Quintessence Int 2003; 34(7):542-7. PMID: 12946074
13. Wolfart M, Lehmann F, Wolfart S, Kern M. Durability of the resin bond strength to zirconia ceramic after using different surface conditioning methods. Dent Mater 2007; 23(1):45-50 PMID: 16427692
14. Amaral R, Ozcan M, Bottino MA, Valandro LF. Microtensile bond strength of a resin cement to glass infiltrated zirconia-reinforced ceramic: the effect of surface conditioning. Dent Mater 2006; 22(3):283-90. PMID: 16039705
15. Kosmac T, Oblak C, Jevnikar P, Funduk N, Marion L. Strength and reliability of surface treated Y-TZP dental ceramics. J Biomed Mater Res 2000;53:304–13. PMID: 10898871
16. Zhang Y, Lawn BR, Malament KA, Van Thompson P, Rekow ED. Damage accumulation and fatigue life of particle-abraded ceramics. Int J Prosthodont 2006;19:442–8. PMID: 17323721
17. Zhang Y, Lawn BR, Rekow ED, Thompson VP. Effect of sandblasting on the long-term performance of dental ceramics. J Biomed Mater Res B Appl Biomater 2004;71: 381–6 PMID: 15386395
18. Magne P, Paranhos MPG, Burnett LH. New zirconia primer improves bond strength of resin-based cements. Dent Mater 2010; 6(4):345-52. PMID: 20047757
19. Spohr AM, Borges GA, Junior LH, Mota EG, Oshima HM. Surface modification of InCeram Zirconia ceramic by Nd:YAG laser, Rocatec system, or aluminum oxide sandblasting and its bond strength to a resin cement. Photomed Laser Surg 2008; 26(3):203-8 PMID: 18588435