Melek AKMAN, Betül ÖZÇOPUR, Gürcan ESKİTAŞCIOĞLU, Sema BELLİ

Rezin esasl kök kanal patlarnn kök dentinine balanma dayanmna ozon uygulamann etkisi

Amaç: Rezin esasl kök kanal patlarnn kök dentinine balanma dayanmna ozon uygulamann etkisini incelemektir. Gereç ve Yöntem: Otuz alt adet çekilmi kanin di bukkolingual olarak kesildi. Yetmi iki adet kök yars elde edildikten sonra rastgele 6 gruba ayrld. Kök yüzeyleri srasyla 5’er dakika 5% NaOCl, 17% EDTA solüsyonu ve distile su ile ykand. Üç kök kanal pat (AH Plus, Real Seal, Hybrid Root SEAL) kullanld. Tüm kökler plastik silindirik bir bloa souk akril yardmyla horizontal olarak gömüldü. Üç gruba ozon tedavisi uyguland. Kullanlan patlar, 3 mm yüksekliindeki polietilen tüpe yerle tirilerek, kökün üçte birlik koronal ksmnda meydana getirilen sabit 3,14 mm2’lik bir yüzey alanna koyuldu ve sertlemesi için 37ºC, 100% nemli ortamda 72 saat bekletildi. Hz dakikada 1 mm/dak olacak ekilde makaslama kuvveti uygulanarak örnekler krlncaya kadar yük uyguland. Elde edilen sonuçlarn istatistiksel analizi Two-way ANOVA, Tukey HSD ve bamsz t testleri ile de- erlendirildi. Bulgular: Test edilen gruplarn makaslama balanma dayanm deerleri arasnda istatistiksel olarak önemli derecede fark bulundu (P < 0.05). AH Plus, Real Seal ve Hybrid Root SEAL’den daha yüksek makaslama balanma dayanm deeri gösterdi (P < 0.05). Ozon tedavisi patlarn makaslama balanma dayanm deerini deitirmedi (p>0.05). Sonuç: Bu çalmann sonuçlar gösteriyor ki, rezin esasl patlarn kök dentinine balanma dayanm deerini uygulanan ozon tedavisi dei- tirmemitir. AH Plus, kök dentinine ozon tedavili ve tedavisiz dier patlardan daha iyi adeziv performans göstermitir.

The effect of ozone application on shear bond strengths of resin based root canal sealers to radicular dentin

The effect of ozone application on shear bond strengths of resin based root canal sealers to radicular dentin Background: To investigate the effect of ozone treatment on shear bond strength of resin based endodontic sealers to root dentin. Methods: Thirty six extracted premolars were sectioned buccolingually and 72 root halves were randomly divided into six groups (n = 12). The cut surfaces were ground and pretreated with 5% NaOCl and 17% EDTA solutions for 5 minutes followed by 5 minutes of distilled water irrigation. Three root canal sealers (AH Plus, Real Seal, Hybrid Root SEAL) were used. All specimens were then fixed with cold acrylic resin to a plastic cylindrical ring. The three groups were allocated for ozone treatment. 3 mm high buildups with a constant surface area of 3.14 mm2 were created using the sealers and allowed to set (37ºC, 100% humid, 72 hrs). The samples were tested to failure for shear bond strength (1 mm/minute). The data was calculated (MPa) and analyzed Two-way ANOVA, Tukey HSD and ndependent-t tests, sig. 0.05). Results: There were statistically significant differences in the shear bond strengths values of the tested groups related to the tested root canal sealers (P < 0.05). AH Plus showed statistically higher bond strength than Real Seal and Hybrid Root SEAL (P < 0.05). Ozone treatment had no effect shear bond strength (p>0.05). Conclusions: Results of this study suggested that ozone treatment did not alter the bond strengths of resin based sealers to dentin. AH Plus showed better adhesive performance than the other sealers both on ozon treated and non-treated root dentin.

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1. Siqueira JF Jr, Rôças IN, Lopes HP, Uzeda M. Coronal leakage of two root canal sealers containing calcium hydroxide after exposure to human saliva. J Endod 1999;25:14- 6.
2. Grossman LI. Physical properties of root canal cements. J Endod 1976;2:166-75.
3. Orstavik D, Eriksen HM, Beyer-Olsen EM. Adhesive properties and leakage of root canal sealers in vitro. Int Endod J 1983;16:59-63
4. Versiani M.A, Carvalho-Junior J.R, Padilha M.I.A.F, Lacey S, Pascon E.A, Sousa-Neto M.D. A Comparative study of physicochemical properties of ah plus and epiphany root canal sealants. Int Endod J 2006;39:464-471.
5. Torabinejad M, Ung B, Kettering JD. n vitro bacterial penetration of coronally unsealed endodontically treated teeth. J Endod 1990;16:566-9.
6. Shipper G, Trope M. n vitro microbial leakage of endodontically treated teeth using new and standart obturation techniques. J Endod 2004;30:154-158.
7. Baysan A, Lynch E. The use of ozone in dentistry and medicine. Prim Dent Care. 2005;12:47-52.
8. Bocci V.Ozone as Janus: this controversial gas can be either toxic or medically useful. Mediators Inflamm. 2004;13:3-11.
9. Azarpazhooh A, Limeback H. The application of ozone in dentistry: a systematic review of literature. J Dent 2008;36:104-16.
10. Rickard GD, Richardson R, Johnson T, McColl D, Hooper L. Ozone therapy for the treatment of dental caries. Cochrane Database Syst Rev. 2004;(3):CD004153
11. Hems RS, Gulabivala K, Ng YL, Ready D, Spratt DA. An in vitro evaluation of the ability of ozone to kill a strain of Enterococcus faecalis. Int Endod J. 2005 Jan;38(1):22-9.
12. Van Noort R, Noroozi S, Howard IC, Cardew G. A Critique of Bond Strenght Measurements. J Dent 1989;17:61-7.
13. Sudsangiam S, Van Noort R. Do Dentin Bond Strenght. Tests Serve a Useful Purpose? J Adhes Dent 1999;1:57-67.
14. Teixeira CS, Alfredo E, Thomé LH, Gariba-Silva R, Silva- Sousa YT, Sousa-Neto MD. Adhesion of an endodontic sealer to dentin and gutta-percha: shear and push-out bond strength measurements and SEM analysis. J Appl Oral Sci. 2009;17:129-35.
15. Baysan A, Lynch E. The use of ozone in dentistry and medicine. Part 2. Ozone and root caries. Prim Dent Care. 2006;13:37-41
16. Holmes J. Clinical reversal of root caries using ozone, double-blind, randomised, controlled 18-month trial. Gerodontology. 2003;20:106-14.
17. Baysan A, Whiley RA, Lynch E. Antimicrobial effect of a novel ozone- generating device on micro-organisms associated with primary root carious lesions in vitro. Caries Res 2000;34:498-501
18. Celiberti P, Lussi A. Penetration ability and microleakage of a fissure sealant applied on artificial and natural enamel fissure caries. J Dent 2007;35:59-67.
19. Schmidlin PR, Zimmermann J, Bindl A. Effect of ozone on enamel and dentin bond strength. J Adhes Dent 2005;7:29-32
20. Campbell D, Hussey D, Cunningham L. Effect of ozone on surface hardness of restorative materials. J Dent Res 2003;82;B-311.
21. Czamecka B, Deegowska- Nosowicz P, Prylinski M, Lirnanowska-Shaw H. Bond strength of glass-ionomers to dentine after HealOzone treatment. Continental NOF Divisions of the IADR, Aug 25-28, 2004;Abstr 63
22. Al Shamsi AH, Cunningham JL, Lamey PJ, Lynch E. The effects of ozone gas application on shear bond strength of orthodontic brackets to enamel. Am J Dent 2008;21:35- 8.
23. Cehreli SB, Guzey A, Arhun N, Cetinsahin A, Unver B. The effects of prophylactic ozone pretreatment of enamel on shear bond strength of orthodontic brackets bonded with total or self-etch adhesive systems. Eur J Dent 2010 ; 4:367-73
24. Cadenaro M, Delise C, Antoniollo F, Navarra OC, Di Lenarda R, Breschi L. Enamel and dentin bond strength following gaseous ozone. J Adhes Dent 2009;11:287-92.
25. Gesi A, Raffaelli O, Goracci C, Pashley DH, Tay FR, Ferrari M. Interfacial strength of Resilon and gutta-percha to intraradicular dentin. J Endod 2005;31:809-13.
26. De-Deus G, Di Giorgi K, Fidel S, Fidel RA, Paciornik S. Push-out bond strength of Resilon/Epiphany and Resilon/ Epiphany self-etch to root dentin. J Endod 2009;35:1048- 50