Wear promoted in the apical third of simulated canals after instrumentation with protaper universal system

Silva, Kathrein Tapia da; Grazziotin‐Soares, Renata; Limongi, Orlando; Irala, Luis Eduardo Duarte; Salles, Alexandre Azevedo

doi:10.1590/s1678-77572009000500027

Cited by 6 publications

(8 citation statements)

References 27 publications

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“…However, the other bacteria tested were resistant. This result was in agreement with a previous study by (Melo et al, 2004), in which tricresol formalin's bactericidal actions were observed only against P. aeruginosa, and with a study by Silva et al (2006), in which tricresol formalin did not inhibit the growth of E. faecalis.…”

Section: Discussionsupporting

confidence: 93%

“…To test the antimicrobial properties of plants and chemicals, testing was performed using agar diffusion, as advocated by Bauer et al (1966) which is a reliable, inexpensive, reproducible and simple method that is widely used in microbiological research (Ohara et al, 1993;Estrela et al, 2000;Gomes et al, 2002;Drumond et al, 2004;Silva et al, 2006;Costa et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

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Antimicrobial analysis of copaiba oil extract from Passiflora cincinnata and endodontic substances

Santos¹,

Leitao²,

Cavalcante³

et al. 2016

J. Microbiol. Antimicrob.

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The aim of this study was to evaluate the antimicrobial activity and minimum inhibitory concentration (MIC) of copaiba oil, extracts of Passiflora cincinnata and substances commonly used against endodontic infections of bacterial strains certified by the American Type Culture Collection (ATCC) and against clinical isolates (CI). The methodology involved the preparation of crude extracts of the plants, the selection of copaiba oil and the standardization of samples. The antibacterial activity of these substances was tested against Enterococcus faecalis (ATCC), Escherichia coli (CI) and Pseudomonas aeruginosa (ATCC and CI). The MIC was determined by broth dilution and the nitroblue tetrazolium chloride dye reduction test. The data were statistically analyzed by the Kolmogorov-Smirnov normality test and by the Kruskal-Wallis test with a confidence level of 95%. The analysis of the antimicrobial activity showed that the ethanol extracts of P. cincinnata and the combination of calcium hydroxide with polyethylene glycol with and without camphorated monochlorophenol showed no antimicrobial activity. However, the copaiba oil and other substances evaluated showed some antimicrobial activity against the microorganisms used (p <0.01), exhibiting a MIC ranging from <0.3 to >400 µL/mL (p <0.05). Copaiba oil showed antimicrobial activity and could represent a potential phytotherapeutic agent to be used against microorganisms causing endodontic infections.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Antimicrobial analysis of copaiba oil extract from Passiflora cincinnata and endodontic substances

Santos¹,

Leitao²,

Cavalcante³

et al. 2016

J. Microbiol. Antimicrob.

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“…On the other hand, acrylic resin blocks allow the observation of the preparation in three dimensions along the whole canal length and a direct comparison of the shaping ability of different instruments 14 . In addition, they provide standardized length, diameter and angle of curvature of the simulated root canals 9 , 23 . From a statistical point of view, the standard deviation might increase whenever a range of curvatures is used, as opposed to the use of standardized acrylic resin blocks where this problem is minimized 22 .…”

Section: Discussionmentioning

confidence: 99%

“…Regardless of the final instrumentation size, the risk of transportation always increases in curved canals with an increase of file size 23 . Schafer and Vlassis 21 (2004) stated that ProTaper may induce apical transportation towards the outer aspect of the root canal especially because of the progressive tapers along the cutting surface of these instruments.…”

Section: Discussionmentioning

confidence: 99%

Wizard CD Plus and ProTaper Universal: analysis of apical transportation using new software

Giannastasio

Rosa

Peres³

et al. 2013

J. Appl. Oral Sci.

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ObjectiveThis study has two aims: 1) to evaluate the apical transportation of the Wizard CD Plus and ProTaper Universal after preparation of simulated root canals; 2) to compare, with Adobe Photoshop, the ability of a new software (Regeemy) in superposing and subtracting images. Material and MethodsTwenty five simulated root canals in acrylic-resin blocks (with 20º curvature) underwent cone beam computed tomography before and after preparation with the rotary systems (70 kVp, 4 mA, 10 s and with the 8×8 cm FoV selection). Canals were prepared up to F2 (ProTaper) and 24.04 (Wizard CD Plus) instruments and the working length was established to 15 mm. The tomographic images were imported into iCAT Vision software and CorelDraw for standardization. The superposition of pre- and post-instrumentation images from both systems was performed using Regeemy and Adobe Photoshop. The apical transportation was measured in millimetres using Image J. Five acrylic resin blocks were used to validate the superposition achieved by the software. Student's t-test for independent samples was used to evaluate the apical transportation achieved by the rotary systems using each software individually. Student's t-test for paired samples was used to compare the ability of each software in superposing and subtracting images from one rotary system per time. ResultsThe values obtained with Regeemy and Adobe Photoshop were similar to rotary systems (P>0.05). ProTaper Universal and Wizard CD Plus promoted similar apical transportation regardless of the software used for image's superposition and subtraction (P>0.05). ConclusionWizard CD Plus and ProTaper Universal promoted little apical transportation. Regeemy consists in a feasible software to superpose and subtract images and appears to be an alternative to Adobe Photoshop.

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“…Other studies 18,19 also performed the same analysis by overlapping images and measuring deviations with the aid of Adobe Photoshop TM . However, this method of analysis has some limitations regarding measurement taking, as it conducts two-dimensional measurement taking of a tridimensional structure.…”

Section: Resultsmentioning

confidence: 99%

Analysis of apical deviation promoted by three endodontic systems: manual, rotary and reciprocating

Boff¹,

Cord²,

Galafassi³

et al. 2015

Dental Press Endod

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Objective: This study aimed to analyze apical deviation occurrence after preparation with three systems: manual, rotary and reciprocating. Material and Methods: Thirty simulated curved root canals 16 mm in length and a 35 degree angle were used. Canals were divided into three experimental groups, according to the system used: manual, rotary and reciprocating. The canals in the manual group were prepared by the crowndown technique, stainless steel #30 memory files were used. In the rotary and reciprocating groups, canals were instrumented by the rotary and reciprocating systems, respectively (Wizard NavigatorTM and UniconeTM) both engine-driven. For apical deviation analysis, before and after preparation, canals were filled with Indian ink and photographed in a standard manner on a platform.Subsequently, the images were manipulated by Adobe Photoshop TM software, with superimposition of pre-and postoperative images. The occurrence of deviation was measured 1 mm and 3 mm short of the working length (WL) with the aid of a ruler tool. Data were subject to analysis of variance (ANOVA), followed by post hoc Turkey's test, with significance set at 5%. Results: The occurrence of apical deviations in the manual group was significantly higher when compared to the other groups. In all three groups, mean deviation 1 mm short of the WL was significantly greater than that 3 mm short of the WL. Conclusion: The manual technique provided a larger amount of apical deviation compared to the rotary and reciprocating systems. A high number of deviations was observed 1 mm short of the WL. Keywords: Endodontics. Root canal preparation. Computer-assisted image processing. IntroductionThe aim of mechanical instrumentation is to form a continuously tapered shape canal with the smallest apical foramen diameter and the largest cervical third diameter possible, 1 while respecting root canal anatomy, without deviations from the original trajectory, mainly in curved and thin canals.

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Wear promoted in the apical third of simulated canals after instrumentation with protaper universal system

Cited by 6 publications

References 27 publications

Antimicrobial analysis of copaiba oil extract from Passiflora cincinnata and endodontic substances

Antimicrobial analysis of copaiba oil extract from Passiflora cincinnata and endodontic substances

Wizard CD Plus and ProTaper Universal: analysis of apical transportation using new software

Analysis of apical deviation promoted by three endodontic systems: manual, rotary and reciprocating

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