Effect of Intracanal Medicaments on the Bond Strength of Bioceramic Root Filling Materials to Oval Canals
Afaf Y Al-Haddad, Kranthi R Kacharaju, Liew Y Haw, Teoh C Yee, Kirubagari Rajantheran, Chong See Mun, Muhamad F Ismail
Citation Information :
Al-Haddad AY, Kacharaju KR, Haw LY, Yee TC, Rajantheran K, Mun CS, Ismail MF. Effect of Intracanal Medicaments on the Bond Strength of Bioceramic Root Filling Materials to Oval Canals. J Contemp Dent Pract 2020; 21 (11):1218-1221.
Aim: This study aimed to evaluate the effect of the prior application of intracanal medicaments on the bond strength of OrthoMTA (mineral trioxide aggregate) and iRoot SP to the root dentin. Materials and methods: Thirty single-rooted mandibular premolars were standardized and prepared using ProTaper rotary files. The specimens were divided into a control group and two experimental groups receiving Diapex and Odontopaste medicament, either filled with iRoot SP or OrthoMTA, for 1 week. Each root was sectioned transversally, and the push-out bond strength and failure modes were evaluated. The data were analyzed using Kruskal Wallis and Mann–Whitney U post hoc test. Results: There was no significant difference between the bond strength of iRoot SP and OrthoMTA without medicaments and with the prior placement of Diapex (p value > 0.05). However, iRoot SP showed significantly higher bond strength with the prior placement of Odontopaste (p value < 0.05). Also, there was no association between bond strength of OrthoMTA with or without intracanal medicament (p value > 0.05) and between failure mode and root filling materials (p value > 0.05). The prominent failure mode for all groups was cohesive. Conclusion: Prior application of Diapex has no effect on the bond strength of iRoot SP and OrthoMTA. However, Odontopaste improved the bond strength of iRoot SP. Clinical significance: Dislodgment resistance of root canal filling from root dentin could be an indicator of the durability and prognosis of endodontic treated teeth.
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