Micro-Computed Tomographic Evaluation of 2 Nickel-Titanium Instrument Systems in Shaping Root Canals

Limoeiro, Ana Grasiela da Silva; Santos, Antônio Henrique Braitt dos; Martin, Alexandre Sigrist De; Kato, Augusto Shoji; Fontana, Carlos Eduardo; Gavini, Giulio; Freire, Laila Gonzales; Bueno, Carlos Eduardo da Silveira

doi:10.1016/j.joen.2015.12.007

Cited by 53 publications

(63 citation statements)

References 31 publications

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“…Even though all the systems tested in the present study produced some degree of apical transportation, no significant differences were observed across the instruments, which is in line with other studies [9, 17, 22, 26, 40]. Mtwo files are fabricated from conventional NiTi alloy, constant tapered, and usually associated with good maintenance of the original canal curvature [12, 13].…”

Section: Discussionsupporting

confidence: 88%

“…For instance, Mtwo instruments have an S-shaped, cross-sectional design and a positive rake angle with 2 cutting edges and low radial contact to increase their flexibility and improve performance inside the root canal [12, 13]. RaCe instruments have a triangular cross-sectional design with sharp, alternating cutting edges that enhance cutting efficiency while producing a more centered canal shape [14-17]. The ProTaper family of instruments comprises NiTi files with a progressively tapered design.…”

Section: Introductionmentioning

confidence: 99%

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Root Canal Transportation and Centering Ability of Nickel-Titanium Rotary Instruments in Mandibular Premolars Assessed Using Cone-Beam Computed Tomography

Mamede-Neto¹,

Borges²,

Guedes³

et al. 2017

TODENTJ

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Introduction:The aim of this study was to evaluate, using cone-beam computed tomography (CBCT), transportation and centralization of different nickel-titanium (NiTi) rotary instruments.Methods: One hundred and twenty eight mandibular premolars were selected and instrumented using the following brands of NiTi files: WaveOne, WaveOne Gold, Reciproc, ProTaper Next, ProTaper Gold, Mtwo, BioRaCe and RaCe. CBCT imaging was performed before and after root canal preparation to obtain measurements of mesial and distal dentin walls and calculations of root canal transportation and centralization. A normal distribution of data was confirmed by the Kolmogorov-Smirnov and Levene tests, and results were assessed using the Kruskal-Wallis test. Statistical significance was set at 5%. Results:ProTaper Gold produced the lowest canal transportation values, and RaCe, the highest. ProTaper Gold files also showed the highest values for centering ability, whereas BioRaCe showed the lowest. No significant differences were found across the different instruments in terms of canal transportation and centering ability (P > 0.05).Conclusion: Based on the methodology employed, all instruments used for root canal preparation of mandibular premolars performed similarly with regard to canal transportation and centering ability.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Root Canal Transportation and Centering Ability of Nickel-Titanium Rotary Instruments in Mandibular Premolars Assessed Using Cone-Beam Computed Tomography

Mamede-Neto¹,

Borges²,

Guedes³

et al. 2017

TODENTJ

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“…Matched images of the surface areas of the root canals before and after preparation were examined to evaluate the percentage of uninstrumented canal wall surface (number of static voxel surface) (da Silva Limoeiro et al . ). All values were calculated by subtracting the scores for the treated canals from those recorded for their untreated counterparts and then converted into percentages (Amoroso‐Silva et al .…”

Section: Methodsmentioning

confidence: 97%

Counterclockwise or clockwise reciprocating motion for oval root canal preparation: a micro‐CT analysis

et al. 2017

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“…Studies have evaluated the effectiveness of these instruments on different parameters of root canal treatment (shaping ability, microbial reduction, endotoxin reduction, post-operative pain); however, the exact role of the type of instrument on clinical outcomes remains unclear (9,(23)(24)(25). The search yielded a large number of studies evaluating the effect of root canal treatment procedures (instrumentation, irrigation and intracranial medication) on endotoxin reduction.…”

Section: Discussionmentioning

confidence: 99%

Effect of instrumentation systems on endotoxin reduction from root canal systems: A systematic review of clinical studies and meta‐analysis

et al. 2018

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This systematic review assessed the effect of different root canal instrumentation systems on endotoxin reduction from the root canal system. The literature search was conducted in two electronic databases (PubMed and Scopus) using specific key words. The search strategy followed the PRISMA guidelines. Qualitative synthesis and quantitative synthesis of the data were performed and data interpretation was done based on the guidelines in the Cochrane Handbook. The risk of bias was assessed using Cochrane criteria. The initial search yielded 600 citations, of which three papers met the criteria for inclusion in this review. Studies showed a significant reduction in endotoxin following rotary and reciprocating instrumentation, with no significant differences between them. The meta-analysis showed no statistical significant difference between reciprocation and rotary files (P > 0.05). In conclusion, the instrumentation techniques compared in this review decrease endotoxin content from root canals, with no significant difference between them.

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Micro-Computed Tomographic Evaluation of 2 Nickel-Titanium Instrument Systems in Shaping Root Canals

Cited by 53 publications

References 31 publications

Root Canal Transportation and Centering Ability of Nickel-Titanium Rotary Instruments in Mandibular Premolars Assessed Using Cone-Beam Computed Tomography

Root Canal Transportation and Centering Ability of Nickel-Titanium Rotary Instruments in Mandibular Premolars Assessed Using Cone-Beam Computed Tomography

Counterclockwise or clockwise reciprocating motion for oval root canal preparation: a micro‐CT analysis

Effect of instrumentation systems on endotoxin reduction from root canal systems: A systematic review of clinical studies and meta‐analysis

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