A comparison of the shaping abilities of 4 nickel-titanium rotary instruments in simulated root canals

Yun, Hyung-hwa; Kim, Sung Kyo

doi:10.1067/moe.2003.92

Cited by 101 publications

(110 citation statements)

References 14 publications

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“…ProTaper removed more canal wall and lessened the canal curvature than did the other instruments 12) . Bergmans et al 13) reported that the maximum centering ratio was 0.47 for ProTaper system and 0.27 for K3 system, despite of no significant differences between two groups and a center displacement towards the furcation at the coronal section was demonstrated.…”

Section: ⅳ Discussionmentioning

confidence: 87%

A comparison of canal centering abilities of four root canal instrument systems using X-ray micro-computed tomography

You

Park

2007

J Korean Acad Conserv Dent

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Section: ⅳ Discussionmentioning

confidence: 87%

A comparison of canal centering abilities of four root canal instrument systems using X-ray micro-computed tomography

You

Park

2007

J Korean Acad Conserv Dent

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“…It seemed that enlarged coronal canal by crowndown usage of Mtwo file would facilitate the access to apical canal and this could shorten the time lapse of each step in group MC than that of group MT. In other studies 14,24) to compare ProTaper and other instruments, instrumentation time with ProTaper was shorter than other systems under identical experimental conditions. But in this study, the Mtwo file showed shorter preparation time than ProTaper, regardless of using method of Mtwo file.…”

Section: ⅳ Discussionmentioning

confidence: 93%

“…In the present study, the centering ratios at the levels of 1 ㎜ and 5 ㎜ indicate that all experimental groups deviated severely. Several researches [23][24][25] about ProTaper reported the large centering ratio and transportation tendency after completion of root canal preparation at apical portion.…”

Section: ⅳ Discussionmentioning

confidence: 99%

Comparison of shaping ability between single length technique and crown-down technique using Mtwo rotary file

Lim

Park

Hur

et al. 2007

J Korean Acad Conserv Dent

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Comparison of shaping ability between single length technique and crown-down technique using Mtwo rotary file Ⅰ. INTRODUCTIONRoot canal preparation with nickel-titanium (NiTi) rotary instruments is easier and faster than with hand instruments 1) . NiTi instruments have two to three times higher elastic flexibility and a superior resistance to torsional fracture, compared with similar-sized conventional stainless steel instruments [1][2][3][4][5] . Also, rotary instrumen- The aims of this study were to compare the shaping effect and safety between single length technique recommended by manufacturer and crown-down technique using Mtwo rotary file and to present a modified method in use of Mtwo file.Sixty simulated root canal resin blocks were used. The canals were divided into three groups according to instrument and the manner of using methods. Each group had 20 specimens. Group MT was instrumented with single length technique of Mtwo, group MC was instrumented with crowndown technique of Mtwo and group PT was instrumented with crown-down technique of ProTaper. All of the rotary files used in this study were operated by an electric motor. The scanned canal images of before and after preparation were superimposed. These superimposed images were evaluated at apical 1 to 8 mm levels. Angle changes were calculated. The preparation time, weight loss, instrument failure and binding, canal aberrations, and centering ratio were measured. Statistical analysis of the three experimental groups was performed with ANOVA and Duncan' s multiple range tests for post-hoc comparison and Fisher' s exact test was done for the frequency comparison.In total preparation time, group MT and group MC were less than group PT. In the aberrations, group MT had more elbows than those of group MC and group PT. The binding of group MC was least and group MT was less than group PT (P < 0.05).Under the condition of this study, crown-down technique using Mtwo rotary file is better and safer method than single length technique recommended by the manufacturer. [J Kor Acad Cons Dent 32(4):385-396, 2007]

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“…52 GT Rotary, Quantec ve Profile ile plastik bloklarda kıyaslanan Protaper marka enstrümanlar daha kısa zamanda daha fazla dentin dokusunu kaldırarak herhangi bir sapma olmadan genişletme yapabilmektedir. 58 Protaper'ın diğer sistemlere göre sertliğinin fazla olması azalmış kanal kurvatürü, artmış apikal transportasyon ve apikalde basamak oluşumu gibi durumlara neden olabilmektedir. Yoshimine ve ark 59 Protaper, K3 ve Race döner alet sistemlerini karşılaştır-dıkları çalışmalarında; Protaper sisteminin daha fazla dentin kaldırdığını, daha az taper'lı ve daha esnek olan K3 ve Race sistemlerinin kurvatürlü kanallarda tercih edilebileceğini bildirmişlerdir.…”

Section: Protaperunclassified

Süt Di̇şleri̇nde Ni̇kel Ti̇tanyum Döner Aletleri̇ni̇n Kullaniminin Değerlendi̇ri̇lmesi̇

Garip¹,

Nur²,

Altunsoy³

et al. 2016

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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A comparison of the shaping abilities of 4 nickel-titanium rotary instruments in simulated root canals

Cited by 101 publications

References 14 publications

A comparison of canal centering abilities of four root canal instrument systems using X-ray micro-computed tomography

A comparison of canal centering abilities of four root canal instrument systems using X-ray micro-computed tomography

Comparison of shaping ability between single length technique and crown-down technique using Mtwo rotary file

Süt Di̇şleri̇nde Ni̇kel Ti̇tanyum Döner Aletleri̇ni̇n Kullaniminin Değerlendi̇ri̇lmesi̇

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