The radiographic platform: A new method to evaluate root canal preparation in vitro

Sydney, Gilson Blitzkow; Batista, Antônio Carlos; Melo, Luciano Loureiro de

doi:10.1016/s0099-2399(06)81724-3

Cited by 59 publications

(49 citation statements)

References 6 publications

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“…The use of simulated root canals in resin blocks, in spite of allowing for a high degree of reproducibility and standardization, does not reflect the clinical behavior of the instruments, because of the different hardness of resin and dentine. Radiographic evaluation 18 , however, is not destructive, but allows only a two-dimensional evaluation of the root canal. CBCT has been adapted for dentistry and Changes in root canal anatomy using three nickel-titanium rotary system -A cone beam computed tomography analysis compared with medical tomography that leads to increased precision and resolution, as well as reducing the image acquisition time and, as ain consequence, the exposure time to radiation .…”

Section: Discussionmentioning

confidence: 99%

Changes in root canal anatomy using three nickel-titanium rotary system: a cone beam computed tomography analysis

et al. 2013

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Aim: Cone beam computed tomography (CBCT) was used to evaluate the ability of three NiTi rotary systems to maintain the original root canal anatomy. Methods: Sixty mesiobuccal canals of human mandibular first molars were divided into three groups with 20 root canals each. All teeth were scanned by CBCT before instrumentation. The images were captured digitally for further analysis using the Image Tools Software. The images were sectioned in three points, located at 9 mm, 6 mm and 3mm from the apex. In Group 1, the root canals were instrumented with ProTaper Universal™ rotary system; in Group 2, with Twisted File™ rotary system; and in Group 3, with M two ™ rotary system. Instrumented teeth were scanned again using CBCT and the images of the uninstrumented canals were compared with images of the instrumented canals. The results were statistically analyzed using the one-way ANOVA test. A level of significance of 0.05 was adopted.

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Section: Discussionmentioning

confidence: 99%

Changes in root canal anatomy using three nickel-titanium rotary system: a cone beam computed tomography analysis

et al. 2013

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“…A radiographic desk was fabricated (Sydney, Batista, Melo 7 , 1991) and attached to the cylinder of the X-ray machine (Spectro II 60 HZ, Dabi Atlante, Brazil) to avoid differences in the angulations employed for each specimen, therefore allowing standardization of the position of the cylinder in relation to the object and film.…”

Section: Methodsmentioning

confidence: 99%

Apical displacement produced by rotary nickel-titanium instruments and stainless steel files

et al. 2004

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The aim of this study was to evaluate the apical displacement produced by different rotary nickel-titanium instruments, testing the hypothesis that rotary systems with nickel-titanium instruments produce lower mean values of apical displacement than stainless steel hand instruments. A total of 100 maxillary permanent first molars were selected for the study. The mesiobuccal roots were sectioned at the top cervical third and embedded in blocks of self-curing resin. The specimens were randomly divided into 5 groups and the root canals were prepared using the following nickel-titanium instruments: Group 1 - Quantec system 2000 (Analytic Endodontics, Mexico); Group 2 - Pro-File T.0.04 (Dentsply/Maillefer, Switzerland); Group 3 - Pro-File Series 29 T.0.04 (Dentsply Tulsa, Switzerland); Group 4 - Pow-R T.0.02 (Moyco-Union Broach, USA). Specimens in Group 5 were prepared using stainless steel hand instruments Flexofile (Dentsply/Maillefer, Switzerland). All root canals were previously submitted to cervical preparation using Orifice Shaper instruments #1, 2, 3 and 4 (Dentsply/Maillefer, Switzerland). After odontometry, the remaining root canal was shaped employing increasingly larger instruments, so that the final instrument corresponded to Quantec #9, Pro-File Series 29 #6, and #35 for the other groups. Specimens in Groups 1 to 4 were prepared using an electric handpiece with 16:1 reduction at 350 rpm. The specimens in Group 5 were manually prepared. Apical displacement was measured and recorded by means of radiographic superimposition on a specific desk. Statistical analysis (ANOVA) of the results revealed that all groups presented apical displacements. Considering only the nickel-titanium instruments, Group 4 showed the lowest mean value while Groups 2 and 3 produced the highest mean apical displacement values (p<0.001).

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“…A radiographic platform, as described by previous researchers was used to take standardized radiographs prior to instrumentation with the k-file size #10 has been inserted into the buccal or lingual canal in order to determine the degree and radius of the curvature using periapical Kodak Insight films (Eastman Kodak Company, Rochester, NY). [22] The X-ray tube (Siemens, Heliodent, Germany) was aligned perpendicular to the root canal. The exposure time (0.125; 70Kv, 7mA) was the same for all radiographs.…”

Section: Selection Of Root Canalsmentioning

confidence: 99%

Evaluation of Effects of Glide Path on the Centering Ability and Preparation Time of two Reciprocating Single File Systems in Root Canals of Mandibular Molars: An In-Vitro Study

Sajad¹,

Ahmed²,

Singh³

et al. 2018

AIMDR

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Background: Root canal preparation procedure must preserve the canal's original anatomy by respecting its initial curvature and creating a continuously tapering funnel. 1The shaping of curved canals remains a major challenge for clinicians, and is one of the most important steps of endodontic therapy.The two single-file systems used in our study are WaveOne and Reciproc in reciprocal motion. The aim of the study was to compare the effect of establishing glide path on the centering ability and preparation time of two different Nickel-Titanium single file systems in mesial roots of mandibular first molars. Methods: Eighty extracted mandibular molars with curvatures of 20-35 degrees and were divided into four groups (n=15); WaveOne+glide path; WaveOne; Reciproc+glide path and Reciproc. Non-patent canals were excluded and only one canal in each tooth was instrumented. A manual glide path was established in first and third groups with #10, 15 hand K-files. Preparation was performed with reciprocating in-and-out motion, with a 3-4 mm amplitude and slight apical pressure. Initial and final photographs were taken to analyze the amount of dentin removed in the instrumented canals. The centering ability of the rotary instruments was evaluated using the computer program Corel draw X6 software. Results: No statistically significant differences were found with regards to the centering ability between the four groups or amongst the ay three different locations coronal, middle and apical thirds of the root canals. Conclusion: Within the limitations of the study, it can be concluded that a manual glide path increased the total time involved in preparation of curved canals with WaveOne and Reciproc instruments. A glide path had no influence on the centering ability of these two single-file systems.

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The radiographic platform: A new method to evaluate root canal preparation in vitro

Cited by 59 publications

References 6 publications

Changes in root canal anatomy using three nickel-titanium rotary system: a cone beam computed tomography analysis

Changes in root canal anatomy using three nickel-titanium rotary system: a cone beam computed tomography analysis

Apical displacement produced by rotary nickel-titanium instruments and stainless steel files

Evaluation of Effects of Glide Path on the Centering Ability and Preparation Time of two Reciprocating Single File Systems in Root Canals of Mandibular Molars: An In-Vitro Study

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