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Comparison of root canal transportation and centering after instrumentation through conservative and traditional access cavities using different file systems
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Introduction:

While conservative access preparations could increase fracture resistance of endodontically treated teeth, it may influence the shape of the prepared root canal. The aim of this study was to compare the prepared canal transportation and centering ability after continuous rotation or reciprocation instrumentation in teeth accessed through traditional or conservative endodontic cavities by using cone-beam computed tomography (CBCT).

Materials and Methods:

Forty extracted intact, matured, and 2-rooted human maxillary first premolars were selected for this study. Teeth were equally divided into two groups according to the access cavity design (traditional or conservative). Each group (n = 20) was further subdivided according to instrumentation technique (n = 10) into rotary 2 shape and reciprocation R-motion file subgroups. The teeth were scanned pre and post instrumentation using Planmeca ProMax to obtain two CBCT images for each sample. Images were analyzed and root canal transportation and centering ability were calculated for both buccal and palatal roots at three levels from their apices (3, 5 to 7 mm).

Results:

Although conservative access cavities showed more canal transportation and less centering ability than the traditional one, there was no statistically significant difference (P > 0.05) between them at all levels. Furthermore, no statistically significant difference has been identified in the same parameter between the two instrumentation techniques (continuous rotation and reciprocation) (P > 0.05). However, longer instrumentation time was measured in the conservative group compared to traditional.

Conclusion:

The size of endodontic access cavity has no effect on root canal transportation and centering ability when instrumentation was performed using 2 shape and R-motion file systems.

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Sun Feb 01 2015
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Publication Date
Fri Mar 04 2022
Journal Name
Baghdad Science Journal
Fusion Reaction Study of some Selected Halo Systems
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Tue Sep 01 2009
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Publication Date
Tue May 10 2022
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Information Systems Ethics and Its Role in Achieving Banking Discrimination Analytical Research in a Sample of Private Banks
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Boundary-domain integral method and homotopy analysis method for systems of nonlinear boundary value problems in environmental engineering
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Tue Mar 12 2024
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Numerical study of single-layer and interlayer grating polarizers based on metasurface structures for quantum key distribution systems
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Relative intensity distribution in the rotational structure for B1Σ+- A1Π and B1Σ+- X1Σ+ electronic systems of BeO molecule
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Publication Date
Fri Jan 01 2021
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Journal Of Accounting And Financial Studies ( Jafs )
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Publication Date
Fri Aug 30 2019
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Environmental Engineering Research
Numerical modeling of two-dimensional simulation of groundwater protection from lead using different sorbents in permeable barriers
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