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      Influence of Sealer Placement Technique on the Quality of Root Canal Filling by Lateral Compaction or Single Cone

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          Abstract

          The aim of this study was to evaluate the influence of the sealer placement technique on the quality of root canal filling using Lateral Compaction (LC) or Single Cone (SC). In order to do that, 60 mesial roots of mandibular first molars were prepared and divided into 2 groups (n=30), according to the filling technique: LC and SC. Each group was subdivided into 3 subgroups (n=10), according to the different sealer placement methods: A: Master gutta-percha (GP) cone; B: Lentulo spiral; C: File. The roots were sectioned at 2, 4 and 6 mm from the apex and photographed with the aid of a digital microscope. Then, areas of GP, endodontic sealer and voids were measured, and these data were subjected to statistical analysis. LC technique showed no statistically difference (p>0.05) in the percentage of GP area, sealer and voids between the subgroups at any of the three levels. After use of SC, higher percentages of sealer area were found at all levels (p<0.01) when the sealer was placed with a file. At 2 mm, higher percentage of void areas (p<0.05) was observed when the cone was used, lower percentage with K-file and the lowest percentage with Lentulo. At 4 mm, cone showed higher percentage of void areas (p<0.05). At 6 mm, there were no significant differences (p>0.05) between the three methods. Considering these results, using an instrument for sealer placement was important in the SC technique to reduce voids. Regarding LC, the sealer placement techniques provided similar results.

          Translated abstract

          O objetivo deste estudo foi avaliar a influência das técnicas de inserção de cimento endodôntico na qualidade da obturação, usando Compactação Lateral Ativa (CLA) e Cone Único. Para tal, 60 raízes mesiais de primeiros molares inferiores foram preparadas e divididas em 2 grupos (n=30), de acordo com a técnica de obturação: CLA e Cone único. Cada grupo foi subdividido em 3 subgrupos (n=10), de acordo com as diferentes técnicas de inserção aplicadas: A - Cone de guta-percha principal; B - Lentulo; C - Lima. As raízes foram seccionadas a 2, 4 e 6 mm do ápice e fotografadas com microscópio digital. Então, as áreas de guta-percha, cimento endodôntico e falhas foram medidas e tais dados foram submetidos à análise estatística. CLA não revelou diferenças estatisticamente significantes (p>0,05) nas porcentagens das áreas de guta-percha, de cimento endodôntico e de falhas, em nenhum dos grupos ou níveis de corte. Com a aplicação da técnica do Cone Único, maiores porcentagens de área de cimento foram encontradas nos três níveis (p<0,01) quando este foi inserido por meio de uma lima. Aos 2 mm, a maior porcentagem de área de falhas (p<0,05) foi observada quando o cone foi utilizado. Uma porcentagem menor foi encontrada quando foi utilizada a lima; e a menor porcentagem foi observada com o Lentulo. Aos 4 mm, a inserção por meio do cone apresentou maior porcentagem de falhas (p<0,05). Aos 6 mm, não houve diferença estatisticamente significante (p>0,05) entre os três métodos. Considerando esses resultados, foi importante o uso de um instrumento para a inserção do cimento quando a técnica do Cone Único foi aplicada. Já com CLA, qualquer técnica de inserção de cimento apresentou resultados similares.

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          Most cited references24

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          Analysis of four gutta-percha techniques used to fill mesial root canals of mandibular molars.

          To compare the percentage of gutta-percha, sealer and voids and the influence of isthmuses in mesial root canals of mandibular molars filled with different techniques.
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            Evaluation of periapical repair following retrograde filling with different root-end filling materials in dog teeth with periapical lesions

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              • Record: found
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              Depth and percentage of penetration of endodontic sealers into dentinal tubules after root canal obturation using a lateral compaction technique: a confocal lasers canning microscopy study

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                bdj
                Brazilian Dental Journal
                Braz. Dent. J.
                Fundação Odontológica de Ribeirão Preto (Ribeirão Preto )
                1806-4760
                April 2014
                : 25
                : 2
                : 117-122
                Affiliations
                [1 ] Universidade Estadual Paulista Brazil
                Article
                S0103-64402014000200117
                10.1590/0103-6440201302370
                25140715
                de790658-f864-4ec1-beb4-679a6fbabf91

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0103-6440&lng=en
                Categories
                DENTISTRY, ORAL SURGERY & MEDICINE

                Dentistry
                Endodontics,gutta-percha,microscopy,obturation,sealing quality
                Dentistry
                Endodontics, gutta-percha, microscopy, obturation, sealing quality

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