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Comparative study of the cytotoxic effect of resilon against two cell lines
Economides, Nickolaos; koulaouzidou, Elisabeth A; Gogos, Christos; Kolokouris, Ioannis; Beltes, Panagiotis; Antoniades, Demetrios.
  • Economides, Nickolaos; Aristotle University. Dental School. Department of Endodontology. Thessaloniki. GR
  • koulaouzidou, Elisabeth A; Aristotle University. Dental School. Department of Operative Dentistry. Thessaloniki. GR
  • Gogos, Christos; Aristotle University. Dental School. Department of Endodontology. Thessaloniki. GR
  • Kolokouris, Ioannis; Aristotle University. Dental School. Department of Endodontology. Thessaloniki. GR
  • Beltes, Panagiotis; Aristotle University. Dental School. Department of Endodontology. Thessaloniki. GR
  • Antoniades, Demetrios; Aristotle University. Dental School. Department of Oral Medicine and Pathology. Thessaloniki. GR
Braz. dent. j ; 19(4): 291-295, 2008. ilus, graf
Article in English | LILACS | ID: lil-504190
ABSTRACT
Resilon is a new material that is a candidate to replace gutta-percha as a root filling material. This study evaluated the antiproliferative effect of Resilon and two commercially available gutta-percha points (Roeko, Dentsply). Two established cell lines (L929 and RPC-C2A) were used for the experiment. Cell survival fraction was estimated by the sulforhodamine-B assay, in reference to controls after 48-h exposure. Non-parametric tests (Kruskal-Wallis followed by Dunn's multiple comparisons) were used to evaluate the statistical significance of the results (α=0.05). Cytotoxicity in a descending order was Resilon > Roeko gutta-percha > Dentsply gutta-percha. At 24-h exposure, no statistically significant differences (p>0.05) were observed between tested materials in both cell lines. At 48-h exposure, statistically significant differences (p<0.05) were found between Resilon and the other materials in the L929 cell line. In the RPC-C2A cell line Resilon was significantly more cytotoxic than Dentsply gutta-percha (p<0.05), but no statistically significant differences (p>0.05) were found between Resilon and Roeko gutta-percha. The cytotoxicity of Resilon increased significantly from 24 h to 48 h in both cell lines. Resilon points were more cytotoxic than gutta-percha points. The cytotoxicity was time dependent and increased after 48 h.
RESUMO
Resilon é um material novo com potencial para substituir a guta-percha como material obturador radicular. Este estudo avaliou o efeito anti-proliferativo do Resilon e de duas marcas comerciais de pontas de guta-percha (Roeko e Dentsply). Para os fins deste estudo foram utilizadas duas linhagens celulares conhecidas (L929 e RPC-C2A). A fração de sobrevivência celular foi estimada pelo método colorimétrico de sulforodamina B comparado aos controles após exposição por 48 h. A significância estatística dos resultados (α=0,05) foi avaliada pelos testes não-paramétricos de Kruskal-Wallis e Dunn para comparações múltiplas. A citotoxicidade dos materiais em ordem decrescente foi Resilon > guta-percha Roeko > guta-percha Dentsply. Após 24 h de exposição, não foram encontradas diferenças estatisticamente significantes (p>0,05) entre os materiais testados em ambas as linhagens celulares. Após 48 h, o Resilon apresentou um efeito citotóxico significantemente maior (p<0,05) em comparação aos outros dois materiais na linhagem celular L929. Na linhagem RPC-C2A, a citotoxicidade do Resilon foi significantemente maior (p<0,05) que a da guta-percha Dentsply, mas não houve diferenças significantes (p<0,05) entre Resilon e guta-percha Roeko. A citotoxicidade do Resilon aumentou significativamente de 24 para 48 h para ambas as linhagens celulares. As pontas de Resilon foram mais citotóxicas do que as pontas de guta-percha. A citotoxicidade foi tempo-dependente e aumentou após 48 h de exposição.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Root Canal Filling Materials Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2008 Type: Article Affiliation country: Greece Institution/Affiliation country: Aristotle University/GR

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Full text: Available Index: LILACS (Americas) Main subject: Root Canal Filling Materials Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2008 Type: Article Affiliation country: Greece Institution/Affiliation country: Aristotle University/GR