Effectiveness of different final irrigation protocols in removing debris in flattened root canals

Nadalin, Michele Regina; Pérez, Danyel Elias da Cruz; Vansan, Luíz Pascoal; Paschoala, Cristina; Souza-Neto, Manoel Damião; Saquy, Paulo César

doi:10.1590/s0103-64402009000300007

Cited by 16 publications

(16 citation statements)

References 19 publications

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“…In this study, apical cleaning was assessed by the morphometric analysis of root cross-sections to determine the percent canal areas occupied by debris, as reported elsewhere (7,13,14). The morphometric analysis was performed with Image Tool software, an image-analysis software that provides good acuity and accurate measurements of delineated areas (7,14).…”

Section: Discussionmentioning

confidence: 99%

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Influence of apical enlargement in cleaning and extrusion in canals with mild and moderate curvatures

et al. 2011

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Optical microscopy and morphometric analysis were used in this study to evaluate, in vitro, the cleaning of the apical region in root canals with mild or moderate curvatures subjected to biomechanical preparation with a rotary system, as well as to assess the amount of extruded material to the periapical area. Lateral incisors (n = 32), 16 with curvature angles smaller or equal to 10° (GI) and 16 between 11° and 25° angles (GII) were submitted to Hero 642 rotary instrumentation with different surgical diameters: (A) 30.02 and (B) 45.02. Irrigation was performed at each change of instrument with 5 mL of ultrapure Milli-Q water and the extruded material through the apical foramen was collected. Root cross-sections were subjected to histological analysis by optical microscopy (×40) and the images were evaluated morphometrically using the Image Tool software. Quantification of the extruded material was performed by weighing after liquid evaporation. ANOVA showed no statistically significant differences (p>0.05) among the groups with respect to the procedures used to clean the apical region. Considering the amount of extruded material, the Tukey's HSD showed that canals with mild curvature prepared with the 45.02 surgical diameter showed significantly higher values (p<0.05) that those of the other groups, which were similar between themselves (p>0.05). In conclusion, the effect of cleaning the apical region did not differ in the groups, considering root curvature and the surgical diameter of instruments used for apical preparation. The amount of extruded material was greater in canals with mild curvature that were prepared with the 45.02 surgical instrument diameter.

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Section: Discussionmentioning

confidence: 99%

“…The morphometric analysis was performed with Image Tool software, an image-analysis software that provides good acuity and accurate measurements of delineated areas (7,14).…”

Section: Discussionmentioning

confidence: 99%

Influence of apical enlargement in cleaning and extrusion in canals with mild and moderate curvatures

et al. 2011

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“…In addition to the physicochemical properties inherent to each endodontic irrigant, constant renewal of the solution during canal preparation by various irrigation/agitation cycles avoids saturation, precipitation of particles, and favors the removal of debris in suspension inside the root canal (Nadalin et al, 2009). A number of methods have been used for delivery and activation of irrigants in the root canals namely conventional Luer-Lock syringe irrigation with needles of different calibers (Cameron, 1995), active scrubbing of irrigant with brush-covered needles (Goel and Tewari, 2009;Gu et al, 2009), ultrasonic irrigation (Ferreira et al, 2004;Passarinho-Neto et al, 2006;Vander Sluis et al, 2007), dynamic manual activation (Gu et al, 2009;Susin et al, 2010), and hydrodynamic irrigation systems, such as the EndoVac system (Nielsen and Baumgartner, 2007;Shin et al, 2010;Susin et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Debris and smear removal in flattened root canals after use of different irrigant agitation protocols

Ribeiro

Silva-Sousa

Souza‐Gabriel

et al. 2011

Microscopy Res & Technique

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Scanning electron microscopy (SEM) can be used to analyze the presence of debris and smear layer on the internal walls of root canal. This study evaluated the debris and smear removal in flattened root canals using SEM after use of different irrigant agitation protocols. Fifty mandibular incisors were distributed into five groups (n = 10) according to the irrigant agitation protocol used during chemomechanical preparation: conventional syringe irrigation with NaviTip needle (no activation), active scrubbing of irrigant with brush-covered NaviTip FX needle, manual dynamic irrigation, continuous passive ultrasonic irrigation, and apical negative pressure irrigation (EndoVac system). Canals were irrigated with 5 mL of 2.5% NaOCl at each change of instrument and received a final flush with 17% EDTA for 1 min. After instrumentation, the roots were split longitudinally and SEM micrographs at ×100 and ×1,000 were taken to evaluate the amount of debris and smear layer, respectively, in each third. Data were analyzed by Kruskal-Wallis and Dunn's post-hoc tests (α = 5%). Manual dynamic activation left significantly (p < 0.05) more debris inside the canals than the other protocols, while ultrasonic irrigation and EndoVac were the most effective (p < 0.05) for debris removal. Regarding the removal of smear layer, there was no statistically significant difference (p > 0.05) either among the irrigant agitation protocols or between the protocol-canal third interactions. Although none of the irrigant agitation protocols completely removed debris and smear layer from flattened root canals, the machine-assisted agitation systems (ultrasound and EndoVac) removed more debris than the manual techniques.

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“…Até para procedimentos histológicos Nadalin et al 14 (2009) valeram-se de cones de papel absorvente após preparo químico-cirúrgico com sistema de rotação contínua e irrigação-aspiração com várias substâncias químicas segundo volume, concentração e tempo de irrigação. Evidente que para remoção das referidas soluções procedeu-se à secagem dos canais radiculares com cones de papel absorvente e, da mesma forma, a aspiração seguida de secagem com cones de papel absorvente proporciona secagem mais efetiva não só da superfície do canal radicular como também a absorção de líquido contido no interior dos túbulos dentinários para se realizarem procedimentos histológicos.…”

Section: Discussionunclassified

Pesagem de dentes humanos úmidos, com cones de papel e estufa

et al. 2017

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RESUMOIntrodução: A secagem do canal radicular após o preparo químico-cirúrgico com cones de papel absorvente é importante, pois, é imprescindível a obtenção de uma superfície sem umidade. O objetivo desta pesquisa é comparar os pesos de dentes humanos extraídos, considerando dentes úmidos, secos com papel absorvente e estufa. Método: Utilizaram-se 30 dentes humanos extraídos nos quais se executaram o acesso à câmara pulpar, à odontometria e o preparo químico-cirúrgico e, em seguida, foram mergulhados em frascos individuais contendo água destilada, por uma semana. Após isso os dentes foram pesados em balança analítica digital com os dentes umedecidos (Pu), a segunda os dentes secos com cones de papel absorvente (Pa) e depois secagem dos dentes na estufa durante 12 horas a 50 0 C (Pe) e pesagem. Resultados e conclusões: Ao fazer a comparação entre dentes secos com papel absorvente e secos na estufa, o teste "t" de Student mostrou que os pesos em grama dos dentes secos na estufa são menores do que os secos com papel absorvente ("t" = 6,3992) com P=0,0001. Concluiu-se que os dentes apresentaram ordem decrescente de peso: dentes umedecidos, dentes secos com cones de papel absorvente e dentes secos em estufa e, portanto, a secagem dos dentes em estufa mostra-se como de suma importância para a remoção maior de líquidos do sistema de canais radiculares.Descritores: Endodontia • Preparo de canal radicular • Absorção. ABSTRACT Introduction:The drying of the root canal after chemical-surgical preparation with absorbent paper cones is important because it is essential to obtain a surface free of moisture. The aim of this study is to compare the weights of extracted human teeth, whereas teeth wet, dry on paper towels and oven. Method: Were used thirty extracted human teeth which were carried out access to the pulp chamber odontometry and chemical-surgical preparation, and then were immersed in individual bottles containing distilled water for one week. After that teeth were weighed on an analytical balance with digital teeth moistened (Pu), the second teeth dry with absorbent paper cones (Pa) and then drying the teeth in the oven for 12 hours at 50 0 C (Pe) and weighing. Results and conclusion: In making the comparison between teeth dry with absorbent paper and dried in the oven, the "t" Student test showed that the weights in grams of dry teeth in emissions are lower than those dried with absorbent paper ("t" = 6.3992 ) with P = 0.0001.It was concluded that the teeth, in descending order of weight of wet teeth, teeth dried with absorbent paper cones teeth and dried in an oven, and therefore the drying kiln of the teeth of the utmost importance to remove most of the root canal fluid system.

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Effectiveness of different final irrigation protocols in removing debris in flattened root canals

Cited by 16 publications

References 19 publications

Influence of apical enlargement in cleaning and extrusion in canals with mild and moderate curvatures

Influence of apical enlargement in cleaning and extrusion in canals with mild and moderate curvatures

Debris and smear removal in flattened root canals after use of different irrigant agitation protocols

Pesagem de dentes humanos úmidos, com cones de papel e estufa

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