Evaluation of softening ability of Xylene & Endosolv-R on three different epoxy resin based sealers within 1 to 2 minutes - an in vitro study
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Objectives: This study evaluated the efficacy of Endosolv-R and Xylene in softening epoxy resin based sealer after 1 to 2 min exposure. Materials and Methods: Sixty Teflon molds (6 mm x 1.5 mm in inner diameter and depth) were equally divided into 3 groups of 20 each. AH 26 (Dentsply/De Trey), AH Plus (Dentsply/De Trey), Adseal (Meta-Biomed) were manipulated and placed in the molds allotted to each group and allowed to set at 37℃ in 100% humidity for 2 wk. Each group was further divided into 2 subgroups according to the solvents used, i.e. Xylene (Lobachemie) and Endosolv-R (Septodont). Specimens in each subgroup were exposed to respective solvents for 1 and 2 min and the corresponding Vicker's microhardness (HV) was assessed. Data was analysed by Mauchly’s test and two-way analysis of variance (ANOVA) with repeated measures, and one-way ANOVA. Results: Initial hardness was significantly different among the three sealers with AH Plus having the greatest and Adseal having the least. After 2 min, Xylene softened AH Plus and Adseal sealer to 11% and 25% of their initial microhardness, respectively (p < 0.001), whereas AH 26 was least affected, maintaining 89.4% of its initial microhardness. After 2 min, Endosolv-R softened AH 26, AH Plus and Adseal to 12.7, 5.6 and 8.1% of their initial microhardness, respectively (p < 0.001). Conclusions: Endosolv-R was a significantly more effective short term softener for all the tested sealers after 2 min whereas Xylene was an effective short term softener against AH plus and Adseal but less effective against AH 26.
Abstract
Objectives: This study evaluated the efficacy of Endosolv-R and Xylene in softening epoxy resin based sealer after 1 to 2 min exposure. Materials and Methods: Sixty Teflon molds (6 mm x 1.5 mm in inner diameter and depth) were equally divided into 3 groups of 20 each. AH 26 (Dentsply/De Trey), AH Plus (Dentsply/De Trey), Adseal (Meta-Biomed) were manipulated and placed in the molds allotted to each group and allowed to set at 37℃ in 100% humidity for 2 wk. Each group was further divided into 2 subgroups according to the solvents used, i.e. Xylene (Lobachemie) and Endosolv-R (Septodont). Specimens in each subgroup were exposed to respective solvents for 1 and 2 min and the corresponding Vicker's microhardness (HV) was assessed. Data was analysed by Mauchly’s test and two-way analysis of variance (ANOVA) with repeated measures, and one-way ANOVA. Results: Initial hardness was significantly different among the three sealers with AH Plus having the greatest and Adseal having the least. After 2 min, Xylene softened AH Plus and Adseal sealer to 11% and 25% of their initial microhardness, respectively (p < 0.001), whereas AH 26 was least affected, maintaining 89.4% of its initial microhardness. After 2 min, Endosolv-R softened AH 26, AH Plus and Adseal to 12.7, 5.6 and 8.1% of their initial microhardness, respectively (p < 0.001). Conclusions: Endosolv-R was a significantly more effective short term softener for all the tested sealers after 2 min whereas Xylene was an effective short term softener against AH plus and Adseal but less effective against AH 26.
참고문헌 (31)
- Rubino GA, "Solvency capacity of gutta-percha and resilon using chloroform, eucalyptol, orange oil or xylene", J Health Sci Inst, 30, pp.22~25 (2012)
- Hülsmann M, "Efficacy, cleaning ability and safety of different rotary NiTi instruments in root canal retreatment", Int Endod J, 37, pp.468~476 (2004)
- Kfir A, "The efficacy of five techniques for removing root filling material: microscopic versus radiographic evaluation", Int Endod J, 45, pp.35~41 (2012)
- Punitha PG, "Evaluation of adaptation of resin based sealers Epiphany, AH plus and AH 26 to the root canal dentin by scanning electron microscope", Indian J Stomatol, 2, pp.207~211 (2011)
- Duncan HF, "Removal of root filling materials", Endod Topic, 19, pp.33~57 (2008)
- Ramzi H, "Efficacy of three different methods in the retreatment of root canals filled with Resilon", Epiphany SE, 2010, pp.5, 161~166
- Grossman, "Grossman’s endodontic practice", pp.278~307 (2010), Wolters Kluwer
- 신수정, "레진 계통의 근관 충전재의 제거 용이성에 대한 평가", Restorative Dentistry and Endodontics, 31(4), pp.323~329 (2006), 대한치과보존학회
- Taşdemir T, "Comparative study of removal of current endodontic fillings", J Endod, 34, pp.326~329 (2008)
- Lee KW, "Adhesion of endodontic sealer to dentin and gutta-percha", J Endod, 28, pp.684~688 (2002)
- Cohen S, "Pathways of the pulp", pp.944~1010 (2005), Mosby
- "Nonsurgical retreatment of endodontic failures: treatment concepts and considerations. Endodontic therapy November 2001;1-9" (2013)[URL]
- Bodrumlu E, "Efficacy of 3techniques in removing root canal filling material", J Can Dent Assoc, 74, pp.721~ (2008)
- Jainaen A, "Push-out bond strengths of the dentine-sealer interface with and without a main cone", Int Endod J, 40, pp.882~890 (2007)
- Mamootil K, "Penetration of dentinal tubules by endodontic sealer cements in extracted teeth and in vivo", Int Endod J, 40, pp.873~881 (2007)
- 장진아, "Effect of moisture on sealing ability of root canal filling with different types of sealer through the glucose penetration model", Restorative Dentistry and Endodontics, 35(5), pp.335~343 (2010), 대한치과보존학회
- 조주연, "AH-26 및 산화아연유지놀 근관실러가 상아질에 대한 복합레진의 전단결합강도에 미치는 영향", Restorative Dentistry and Endodontics, 31(3), pp.147~152 (2006), 대한치과보존학회
- 김창규, "레진계 근관충전실러의 방사선 불투과성 및 세포 독성에 대한 평가", Restorative Dentistry and Endodontics, 32(5), pp.419~425 (2007), 대한치과보존학회
- Kfir A, "Can epoxy resinbased endodontic sealers be softened within 1-2 min? An in vitro study with chloroform and xylene", Endod Pract Today, 6, pp.189~194 (2012)
- Hansen MG., "Relative efficiency of solvents used in endodontics", J Endod, 24, pp.38~40 (1998)
- Erdemir A, "In vitro evaluation of the dissolving effect of solvents on root canal sealers", J Oral Sci, 45, pp.123~126 (2003)
- Vajrabhaya LO, "Cytotoxicity evaluation of gutta-percha solvents: Chloroform and GP-Solvent (limonene)", Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 98, pp.756~759 (2004)
- Martos J, "Dissolving efficacy of eucalyptus and orange oil, xylol and chloroform solvents on different root canal sealers", Int Endod J, 44, pp.1024~1028 (2011)
- Mushtaq M, "The dissolving ability of different organic solvents on three different root canal sealers: in vitro study", Iran Endod J, 7, pp.198~202 (2012)
- Vranas RN, "The effect of endodontic solutions on resorcinol-formalin paste", J Endod, 29, pp.69~72 (2003)
- Gambrel MG, "The effect of endodontic solution on resorcinol-formalin paste in teeth", J Endod, 31, pp.25~29 (2005)
- Shokouhinejad N, "Push-out bond strength of resilon", epiphany self-etch to intraradicular dentin after retreatment: a preliminary study, 2010, pp.36, 493~496
- Jacob S, "Effect of Chloroform, Xylene and halothane on enamel and dentin microhardness of human teeth", Endodontol, 12, pp.3~6 (2000)
- "Occupational safety and health guideline for Xylene"[URL]
- Chutich MJ, "Risk assessment of the toxicity of solvents of guttapercha used in endodontic retreatment", J Endod, 24, pp.213~216 (1998)
- "Endosolv. Product for removing canal fillings" (2013)[URL]