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Abstract

Purpose: The aim of this in vitro study was to evaluate the effect of two different calcium hydroxide (CH) mixtures on the dentine fracture strength (DFS) of endodontically treated human teeth.Materials and Methods: For this purpose 90 extracted intact human mandibular incisors were used. The teeth were divided into three experimental groups. Group 1: CH and sterile saline solution mixture. Group 2: CH and %2 chlorhexidine gluconate (CHX) mixture. Group 3: positive and negative control groups (without any CH application). The DFS of randomly chosen 10 teeth of every group was measured in an İnstron testing machine on 7th, 14th or 28th day.Results: The results clearly indicated that there are no statistically significant difference neither between the saline and CHX mixture groups, nor the positive control group (p=0,441).Conclusion: Both mixtures of CH can be used safely up to 4 weeks as a root canal medicament.

Keywords

• Calcium hydroxide, chlorhexidine gluconate, dentine fracture strength

İKİ FARKLI KALSİYUM HİDROKSİT PREPARATININ ENDODONTİK TEDAVİ GÖREN DİŞLERİN DENTİN KIRILMA DİRENCİNE OLAN ETKİSİNİN İNCELENMESİ

Abstract

Amaç: Bu çalışmanın amacı iki değişik karışımdaki kalsiyum hidroksit (KH) preparatının endodontik tedavi görmüş insan dişlerinde dentin kırılma direncine (DKD) olan etkisinin in vitro olarak incelenmesidir. Gereç ve Yöntem: Bu amaçla 90 adet çekilmiş çürüksüz insan alt çene ön kesici dişi kullanılmıştır. Dişler üç çalışma grubuna ayrılmıştır. Bütün gruplardaki dişlerin kök kanalları aynı yöntemle döner aletler kullanılarak hazırlanmıştır. Grup 1: KH ve steril serum fizyolojik. Grup 2: KH ve %2’lik klorheksidin glukonat (KHS). Grup 3: pozitif ve negatif kontrol (kök kanallarına herhangi bir KH preparatı uygulanmamıştır). 7, 14 ve 28 günlük sürelerin sonunda her grubun kendi içinden rastgele seçilen 10 diş İnstron cihazı kullanılarak DKD bakımından test edilmiştir. Bulgular: Elde edilen verilerin istatistiksel olarak incelenmesi ve karşılaştırılması sonucunda her iki KH preparatının, birbirleri ve pozitif kontrol grubu arasında DKD açısından istatistiksel olarak anlamlı bir fark bulunamamıştır (p=0,441). Sonuç: Bulgular her iki karışımında 4 haftalık sürelerde güvenli bir şekilde uygulanabileceğini göstermektedir.

Keywords

• Kalsiyum hidroksit, klorheksidin glukonat, dentin kırılma direnci

References

1. Siqueira Jr JF, Lopes HP. Mechanisms of antimicrobial activity of calcium hydroxide: a crtical review. Int Endod J, 1999; 32(5): 361-69. Nair PN, Sjögren U, Krey G, Kahnberg
2. KE, Sundqvist G. Intraradicular bacteria and fungi in root-filled, asymptomatic human teeth with therapy-resistant periapical lesions: a long-term light and electron microscopic follow-up study. J Endod,1990; 16(12): 580
3. Orstavik D, Kerekes K, Molven O. Effects of extensive apical reaming and calcium hydroxide dressing on bacterial infection during treatment of apical periodontitis: a pilot study. Int Endod J, 1991; 24(1): 1-7.
4. Siqueira JF, Uzeda M. Disinfection by calcium hydroxide pastes of dentinal tubules infected with two obligate and one facultative anaerobic bacteria. J Endod, 1996; 22(12): 674-76.
5. Yoshiba K, Yoshiba N, Iwaku M. Histological observations of hard tissue barrier formation in amputated dental pulp capped with alpha-tricalcium phosphate containing calcium hydroxide. Endod Dent Traumatol, 1994; 10(3): 113-20.
6. Safavi KE, Nichols FC. Effect of calcium hydroxide on bacterial lipopolysaccharide. J Endod, 1993; 19(2): 76-78.
7. Hermann BW. Calcium hydroxyd als mittel zum behalden und fullen von zahnwurzelkana len. Wuzburg: Med Diss, 1920. Crabb HS. The basis of root canal therapy. Dent Pract Dent Res, 1965; 15: 39740
8. Tronstad L. Root resorption etiology, terminology and clinical manifestations. Endod Dent Traumatol, 1988; 4(6): 241-52. Rosenberg B, Murray PE, Namerow K. The effect of calcium hydroxide root filling on dentin fracture strength. Dent Traumatol, 2007; 23(1): 26-29.

9. Russell AD, Day MJ. Antibacterial activity of chlorhexidine. J Hosp Infect, 1993; 25(4): 229-38.
10. Zerella JA, Fouad AF, Spångberg LS. Effectiveness of a calcium hydroxide and chlorhexidine digluconate mixture as disinfection during retreatment of failed endodontic cases. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 2005; 100(6): 756-61. Ercan E, Dalli M, Dulgergil CT. In vitro assessment of the effectiveness of chlorhexidine gel and calcium hydroxide paste with chlorhexidine against Enterococcus faecalis and Candida albicans. Oral Surg
11. Oral Med Oral Pathol Oral Radiol Endod, 2006; 102(2): e27-31. Obermayr G, Walton RE, Leary JM, Krell KV. Vertical root fracture and relative deformation during obturation and post cementation. J Prosthet Dent, 1991; 66(2): 181- Lertchirakarn V, Palamara JE, Messer
12. HH. Patterns of vertical root fracture: factors affecting stres distribution in the root canal. J Endod, 2003; 29(8): 523-28. Andreasen FM, Andreasen JO. Root fractures. In: Andreasen JO, Andreasen FM, editors. Textbook and color atlas of traumatic injuries to the teeth. Copenhagen: Munksgaard, 1994, p.279-14. Andreasen FM, Andreasen JO, Bayer
13. T. Prognosis of root-fractured permanent incisors-prediction of healing modalities. Endod Dent Traumatol, 1989; 5(1): 11-22. Steele A, Johnson BR. In vitro fracture strength of endodontically treated premolars.
14. J Endod, 1999; 25(1): 6-8. Andreasen JO. Treatment of fractured and avulsed teeth. ASDC J Dent Child, 1971; 38(1): 29-31. Stormer K, Jacobsen I, Attramadal
15. A. Hvor funkjonsdyktige blir rottfylte unge permanente incisiver? In: Nordisk forening for pedodonti. Bergen, Norway: Aarsmote, 19 Cvek M. Prognosis of luxated nonvital maxillary incisors treated with calcium hydroxide and filled with gutta-percha. Endod Dent Traumatol, 1992; 8(2): 45-55. Andreasen JO, Farik B, Munksgaard EC. Long term calcium hydroxide as a root canal dressing may increase risk of root fracture. Dent Traumatol, 2002; 18(3): 134-37. White JD, Lacefield WR, Chavers LS, Eleazer PD. The effect of three commonly used endodontic materials on the strength and hardness of root dentin. J Endod, 2002; 28(12): 828-30.
16. Andreasen JO, Munksgaard EC, Bakland LK. Comparison of fracture resistance in root canals of immature sheep teeth after filling with calcium hydroxide or MTA. Dent Traumatol, 2006; 22(3): 154-56.
17. Grigoratos D, Knowles J, Ng Y-L, Gulabivala K. Effect of exposing dentine to sodium hypoclorite and calcium hydroxide on its flexural strength and elastic modulus. Int Endod J, 2001; 34(2): 113-19.
18. Peters LB, Wesselink PR. Periapical healing of endodontically treated teeth in one and two visits obturated in the presence or absence of detectable microorganisms. Int Endod J, 2002; 35(8): 660-67.
19. Gomes BP, Vianna ME, Sena NT, Zaia AA, Ferraz CC, de Souza Filho FJ. In vitro evaluation of the antimicrobial activity of calcium hydroxide combined with chlorhexidine gel used as intracanal medicament. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 2006; 102(4): 544-50.
20. Nair PNR. Pathogenesis of apical periodontitis and the causes of endodontic failures. Crit Rev Oral Biol Med, 2004; 15(6): 348-81.
21. Haapasalo M, Endal U, Zandi H, Coil JM. Eradication of endodontic infection by instrumentation and irrigation solutions. Endod Topics, 2005; 10(1): 77-102.
22. Hansen EK, Asmussen E, Christiansen NC. In vivo fractures of endodontically treated posterior teeth restored with amalgam. Endod Dent Traumatol, 1990; 6(2): 49- Doyon GE, Dumsha T, von Fraunhofer JA. Fracture resistance of human root dentin exposed to intracanal calcium hydroxide. J Endod, 2005; 31(12): 895-97. Shabahang S, Torabinejad M, Boyne
23. PP, Abedi H, McMillan P. A comparative study of root-end induction using osteogenic protein-1, calcium hydroxide and mineral trioxide aggregate in dogs. J Endod, 1999; 25(1): 1-5. Yazışma adresi: Yusuf Burak BATUR
24. İstanbul Üniversitesi Diş Hekimliği Fakültesi Endodonti A.D. 34093 Çapa – Fatih/ İstanbul Tel: [phone] Dahili: 30320 e-posta: [e-mail]