Flexibility of K3 and ProTaper universal instruments

Grazziotin‐Soares, Renata; Filho, Flares Barato; Vanni, José Roberto; Almeida, Susimara; Oliveira, Elias Pandonor Motcy de; Barletta, Fernando Branco; Limongi, Orlando

doi:10.1590/s0103-64402011000300007

Cited by 7 publications

(7 citation statements)

References 20 publications

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“…The ProTaper Universal Rotary system uses progressively tapered Ni-Ti rotary files in the same instrument (21) and the shaping instruments present greater flexibility than the finishing instruments (22), which demonstrate that our results were not overestimated by the file type. The strain values were significantly higher in the apical root region during the root canal preparation, possibly due to the ProTaper finishing files F4 and F5 used to enlarge the apical third of the root canal (the zone with the smallest root diameter).…”

Section: Discussionsupporting

confidence: 54%

Root Dentin Strain and Temperature Rise During Endodontic Treatment and Post Rehabilitation

et al. 2013

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This study investigated the effects of endodontic treatment procedures and different post systems rehabilitation steps on the strain and temperature rise on apical and cervical root dentin regions. Twenty-one extracted human canine teeth had two strain gages attached to the distal root surface and two thermocouples attached to the mesial root surface (cervical and apical). The strain and temperature rise were recorded during the following procedures: root canal preparation, final rinse and drying, root canal filling and canal relief. Then the teeth were divided into three groups (n=7), according to the type of post system: CPC, cast post and core; FGP, fiberglass post; and PSP, prefabricated steel post. Data continued to be recorded during the post space preparation, post modeling (only for CPC), post trying and post cementation. Data were subjected to a two-way ANOVA followed by Tukey's test (α=0.05). The post-space preparation caused the highest temperature rise (4.0-14.9 °C) and the highest strain in the apical region during irrespective of post type. The resin cement light-activation resulted in significant temperature increases in the cervical region for all of the groups. The canal relief and the post-space preparation produced highest temperature rises. The CPC post modeling resulted in higher root strain level similarly the level of post preparation. The PSP resulted in highest strain during post trying and post cementation.

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Section: Discussionsupporting

confidence: 54%

Root Dentin Strain and Temperature Rise During Endodontic Treatment and Post Rehabilitation

et al. 2013

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“…, Grazziotin‐Soares et al . ). This might account for the increased fracture rate for K3 files with larger tapers.…”

Section: Discussionmentioning

confidence: 97%

Deformation and fracture of K3 rotary nickel–titanium endodontic instruments after clinical use

et al. 2015

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“…The same did not occur in this study, in which Wizard CD Plus' standard deviation was similar to that observed in the ProTaper group 6 . According to Grazziotin-Soares, et al 10 (2011), ProTaper instruments present lower flexibility after the third use. Thus, in order to avoid apical transportation originating from repeated preparation, each instrument was used in only three acrylic resin blocks and then discarded.…”

Section: Discussionmentioning

confidence: 98%

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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Flexibility of K3 and ProTaper universal instruments

Cited by 7 publications

References 20 publications

Root Dentin Strain and Temperature Rise During Endodontic Treatment and Post Rehabilitation

Root Dentin Strain and Temperature Rise During Endodontic Treatment and Post Rehabilitation

Deformation and fracture of K3 rotary nickel–titanium endodontic instruments after clinical use

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

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