Morphometrical analysis of cleaning capacity using nickel-titanium rotary instrumentation associated with irrigating solutions in mesio-distal flattened root canals

Marchesan, Melissa Andréia; Arruda, Marcos; Silva-Sousa, Yara Teresinha Corrêa; Saquy, Paulo César; Pécora, Jesus Djalma; Sousa-Neto, Manoel Damião

doi:10.1590/s1678-77572003000100010

Cited by 29 publications

(40 citation statements)

References 17 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%

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%

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

et al. 2011

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“…2,3 However, the complex internal anatomy of root canals compromises their proper cleaning. 3,4,5 Isthmuses and irregularities are most prevalent in the middle thirds of flattened roots, because of straightening in the mesiodistal direction, such as in mandibular incisors, mandibular premolars, and the mesial roots of mandibular molars. Usually, instruments do not touch these areas, leaving microorganisms and debris, contributing to the failure of endodontic treatment.…”

Section: Introductionmentioning

confidence: 99%

CT study of the performance of reciprocating and oscillatory motions in flattened root canal areas

Moura-Netto

Palo

Pinto³

et al. 2014

Braz. oral res.

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Root canal preparation is an important step in endodontic treatment. The anatomical complexity of the middle third of the root compromises the effective cleaning of this area. Thus, advances have been made in instrumentation techniques and instruments for this purpose. The aim of this study was to evaluate the effects of three different instrumentation systems on the enlargement of the middle thirds of root canals in mandibular incisors. The preparation methods used were the reciprocating systems Reciproc (Group I) and WaveOne (Group II) and the oscillatory system Tilos (Group III). Comparisons were made by three-dimensional image reconstruction with cone-beam computed tomography before and after instrumentation. Changes in area, perimeter, centering ability, and pattern of preparation were analyzed. The results were subjected to ANOVA complemented by the Tukey's test. Changes in area, perimeter, and tendency of transportation showed similar results among groups. The transportation index of the Tilos system was significantly lower than that of the other groups. Qualitative analysis of the preparation pattern showed that the Tilos system had a more uniform preparation, although Reciproc and WaveOne preparations appeared more rounded, incompatible with the original canal anatomy. There was similarity in the systems' performance on flattened areas, although the Tilos system presented a better pattern of root canal preparation and a lower index of transportation.

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“…Cleaning occurs simultaneously with biomechanical preparation, elimination of bacteria, their sub-products, degenerated pulp tissue and contaminated dentin creating a surgical space that permits proper sealing 1 . However, conventional root canal preparation and rinsing solutions cannot always eliminate the remaining bacteria in the root canal 2 .…”

Section: Introductionmentioning

confidence: 99%

Influence of Er,Cr: YSGG laser on bond strength of self-adhesive resin cement

et al. 2012

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0.05) among the groups G1a (25.44 ± 2.35) and G1b (23.62 ± 3.48), G2a (11.77 ± 2.67) and G2b (9.93 ± 3.37). Fractures were observed at the interface between the dentin and the resin in all groups. The Er,Cr:YSGG laser irradiation did not influence on the bond strength of the resin cements and the etch-and-rinse resin cement had better results on bond strength than self-adhesive resin cement.]]>

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Morphometrical analysis of cleaning capacity using nickel-titanium rotary instrumentation associated with irrigating solutions in mesio-distal flattened root canals

Cited by 29 publications

References 17 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

CT study of the performance of reciprocating and oscillatory motions in flattened root canal areas

Influence of Er,Cr: YSGG laser on bond strength of self-adhesive resin cement

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