An in Vitro Comparative Evaluation of Apical Extrusion of Debris during Root Canal Preparation with Different File Systems

ABSTRACT Aim and objective To compare root microcrack formation after root canal preparation using ProTaper Next in rotation or forward reciprocation and Waveone gold in reverse reciprocating motion. Materials and methods Buccal roots of 60 maxillary premolars with mature apices were selected, for different instrumentation techniques and divided into three groups. Coronal access was achieved and the canals were confirmed for apical patency. The canals were then instrumented using the following instrumentation techniques: ProTaper Next in rotation or forward reciprocation or Waveone gold in reverse reciprocation. The tooth was then subjected to sectioning using a diamond saw under water cooling and then was visualized under the stereomicroscope for dentinal microcrack. Results The results showed that the maximum dentinal microcrack formed at apical 3 and 6 mm was in Waveone gold in reverse reciprocation followed by ProTaper Next in forward reciprocation and rotation. However, the p value was found to be not significant at 3 and 6 mm (p value—0.082 and 0.23). Conclusion Nickle titanium rotary instruments tend to induce varied degrees of root dentinal damage during canal instrumentation. ProTaper Next files in rotation as well as forward reciprocation presented with minimal microcrack defects when compared with Waveone gold. Clinical significance Root canal preparation, when performed by manual or engine-driven techniques, has shown to produce structural defects in the root dentin. One of the causes of failures in root canal treatment is because of fracture in the dentin that occurs due to these procedures. Though all the motion kinematics caused microcracks in this study, it was seen that rotational motion produced the least structural damage to the dentin. How to cite this article Haridas K, Hariharan M, Singh P, et al. Comparative Evaluation of Microcrack Formation in Different Kinematics Using Rotary and Reciprocating File Systems: An In Vitro Study. J Contemp Dent Pract 2020;21(12):1389–1392.

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Assessment of Apical Extrusion of Debris during Root Canal Preparation with Different Ni–Ti File Systems: An In Vitro Study

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-3016 ◽

2021 ◽

Vol 22 (4) ◽

pp. 349-352

Keyword(s):

Root Canal ◽

File Systems ◽

In Vitro Study ◽

Vitro Study ◽

Root Canal Preparation ◽

Apical Extrusion

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Comparison of apical debris extrusion during root canal preparation in primary molars using different file systems: an in vitro study

Australian Endodontic Journal ◽

10.1111/aej.12582 ◽

2021 ◽

Author(s):

Davood Mohammadi ◽

Majid Mehran ◽

Roland Frankenberger ◽

Newsha BabeveyNejad ◽

Morteza Banakar ◽

...

Keyword(s):

Root Canal ◽

File Systems ◽

In Vitro Study ◽

Vitro Study ◽

Primary Molars ◽

Root Canal Preparation

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Comparative Evaluation of Taper Preparation Variability of Three Different Niti Files- An In Vitro CBCT Study

European Scientific Journal ESJ ◽

10.19044/esj.2017.v13n3p126 ◽

2017 ◽

Vol 13 (3) ◽

pp. 126

Author(s):

Tirthankar Bhaumik ◽

Utpal Kumar Das ◽

Kaushik Dutta

Keyword(s):

Root Canal ◽

Comparative Evaluation ◽

File Systems ◽

Molar Tooth ◽

Advanced Technology ◽

Canal System ◽

Dental Instruments ◽

Root Curvature ◽

Root Canal System

The ultimate goal of an endodontic treatment is to achieve the fluid tight seal particularly at the apex as well as in coronal aspect of the root canal system. This is mainly influenced by the cleaning and shaping of root canal system and it has been recognized as an important phase of endodontic therapy. Cleaning and shaping as well as obturation are best accomplished when the file taper claimed by the manufacturer is accurate and the taper of the canal following instrumentation corresponds to the taper of the file. Despite the most advanced technology in manufacturing of dental instruments, variations in endodontic file tapers still exist. Therefore the purpose of this study is to compare the taper variation in root canal preparations among the three different NiTi files using CBCT. Methods: 24 upper 1st molar tooth with mesiobuccal root curvature 15-30 degree were selected and divided into three groups. Mesiobuccal roots (MB1) of three groups were prepared by three different NiTi file system respectively up to size25 taper.06 and CBCT were done separately for each group. The diameter was measured at 1, 3, and orifice in mm and canal taper preparation was calculated using CBCT. Result: Of the 3 file systems, fell within the ±.05 taper variability. All preparations demonstrated variability when compared to the nominal taper .06. Conclusion: Taper preparations of the investigated size 25 taper .06 were favorable but different from the nominal taper.

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