Comparative study of the sealing ability of a polydimethylsiloxane-based root canal sealer



Document title: Comparative study of the sealing ability of a polydimethylsiloxane-based root canal sealer
Journal: Brazilian dental journal
Database: PERIÓDICA
System number: 000290290
ISSN: 0103-6440
Authors: 1
2
3
4
5
Institutions: 1Aristotle University of Thessaloniki, Faculty of Dentistry, Thessaloniki, Thessaloniki. Grecia
2Aristotle University of Thessaloniki, Faculty of Dentistry, Thessaloniki, Thessaloniki. Grecia
3Aristotle University of Thessaloniki, Faculty of Dentistry, Thessaloniki, Thessaloniki. Grecia
4Aristotle University of Thessaloniki, Faculty of Dentistry, Thessaloniki, Thessaloniki. Grecia
5Aristotle University of Thessaloniki, Faculty of Dentistry, Thessaloniki, Thessaloniki. Grecia
Year:
Season: May-Ago
Volumen: 16
Number: 2
Pages: 145-148
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Caso clínico, analítico
English abstract The purpose of this study was to compare the sealing ability of three root canal sealers, RSA (polydimethylsiloxane sealer), Endion (glass-ionomer sealer) and Topseal (epoxy resin sealer), with and without smear layer removal. Ninety extracted human teeth were selected and assigned to 6 groups (n=15), according to the following protocols: in 3 groups, the smear layer was left intact and the root canals were obturated with gutta-percha points and RSA, Endion and Topseal, respectively; in the other 3 groups, the smear layer was removed and the root canals were obturated in the same way as described above. Microleakage was measured at 7 days, 1 month and 2 months, using the fluid transport model. The results were expressed in &micro;L/24 h. Data were analyzed statistically by Kruskall-Wallis and Mann-Whitney non-parametric tests. The results showed that the Topseal group without smear layer leaked significantly less (p<0.05) than the RSA group without smear layer, at all experimental periods. No statistically significant differences (p>0.05) were found among the other groups, at the established evaluation intervals. The findings of this study showed that the polydimethylsiloxane sealer (RSA) did not yield better sealing ability than the other sealers, either in the presence or in the absence of smear layer. Topseal had the least microleakage from the root canal sealers evaluated
Portuguese abstract O objetivo deste estudo foi comparar a capacidade de selamento de três cimentos endodônticos, RSA (cimento à base de silicone), Endion (cimento à base de ionômero de vidro) e Topseal (cimento à base de resina epóxica), com e sem remoção de smear layer. Noventa dentes humanos extraídos foram selecionados e distribuídos em 6 grupos (n=15), de acordo com os seguintes protocolos: em 3 grupos, a smear layer foi mantida e os canais radiculares foram obturados com cones de guta-percha e com os cimentos RSA, Endion e Topseal, respectivamente. Nos outros 3 grupos, a smear layer foi removida e os canais radiculares foram obturados da mesma forma. A microinfiltração foi avaliada aos 7 dias, 1 mês e 2 meses, utilizando o sistema de transporte de fluído. Os resultados foram expressos em &micro;L/24 h. Os dados foram analisados estatisticamente por meio dos testes não-paramétricos de Kruskall-Wallis e Mann-Whitney. Os resultados demonstraram que o grupo obturado com Topseal sem smear layer apresentou infiltração significativamente menor (p<0.05) que o grupo obturado com cimento RSA sem smear layer, em todos os períodos avaliados. Não houve diferença estatisticamente significante (p>0.05) entre os outros grupos, nos intervalos de avaliação estabelecidos. Os achados deste estudo demonstraram que o cimento à base de silicone (RSA) não apresentou melhor capacidade de selamento que os outros cimentos, na presença ou ausência de smear layer. Dentre os cimentos endodônticos avaliados, o Topseal apresentou os menores valores de microinfiltração
Disciplines: Medicina
Keyword: Odontología,
Filtración,
Biomateriales,
Selladores dentales,
Raiz dental,
Barro dentinario,
Polidimetilsiloxano
Keyword: Medicine,
Dentistry,
Microleakage,
Biomaterials,
Dental sealers,
Root canal,
Smear layer,
Polydimethylsiloxane
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