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DOI: 10.1055/s-0039-3401369
Cytotoxicity Evaluation of Minimum Antibacterial Values of Different Medicaments Used in Endodontic Regenerative Procedures
Funding This study was supported by Tehran University of Medical Sciences (grant no: 35692).Publikationsverlauf
Publikationsdatum:
31. Dezember 2019 (online)
Abstract
Objectives This study aimed to evaluate the cytotoxicity of minimum antibacterial values of medicaments used in endodontic regeneration on stem cells.
Materials and Methods “Minimum inhibitory concentration,” “minimum bactericidal concentration,” and “minimum biofilm inhibitory concentration” of triple and double antibiotic paste, a modified triple antibiotic paste (minocycline replaced by clindamycin), Augmentin, and calcium hydroxide were determined using Enterococcus faecalis (ATCC 29212) by microtiter plate method. Direct cytotoxic effects of drugs were evaluated by lactate dehydrogenase and water-soluble tetrazolium salt-1 assays using stem cells of apical papilla obtained from immature third molars via enzymatic digestion.
Statistical Analysis Data were analyzed using IBM SPSS Statistics 24, one-way analysis of variance and post hoc comparisons. The statistical power was set at p < 0.05.
Results All medicaments caused similar cytotoxicity and cell proliferation at “minimum inhibitory concentration” (p > 0.05) except Augmentin which was significantly more toxic than others (p < 0.05). At “minimum bactericidal concentration,” calcium hydroxide was more toxic than other drugs (p < 0.001), but its adverse effect on cell proliferation was the same as Augmentin (p > 0.05). Triple and double antibiotic paste revealed similar favorable effects in terms of toxicity and proliferation rate at most of the tested concentrations (p > 0.05). At “minimum biofilm inhibitory concentration” both the modified paste and Augmentin caused less proliferation rate than triple and double antibiotic paste (p < 0.001and p < 0.05, respectively) and Augmentin induced more cytotoxicity (p < 0.05).
Conclusions Considering the antimicrobial potency, triple antibiotic paste seems to be the safest drug for the stem cells of apical papilla, while Augmentin may have some adverse effects.
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