Shaping ability of ProTaper nickel‐titanium files in simulated resin root canals

Calberson, Filip; Deroose, Christophe; Hommez, Geert; Moor, Roeland De

doi:10.1111/j.1365-2591.2004.00860.x

Cited by 62 publications

(79 citation statements)

References 20 publications

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“…However, the MPT or RPT had a few more zips and elbows than the PF. The reason may be over-uses of F series files in ProTaper � system which can remove tooth structure excessively when left in the canal too long with their active design 24) . It is therefore of utmost importance to follow the manufacturer' s instructions and not to leave the RPT prepare the root canal for longer than 1 second or not to use the MPT too much when reaching the desired working length.…”

Section: ⅳ Discussionmentioning

confidence: 99%

Relative efficacy of three Ni-Ti file systems used by undergraduates

Kim

Park

Hur

2005

J Korean Acad Conserv Dent

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The purpose of this study was to compare and evaluate the shaping ability of the three different Ni-Ti file systems used by undergraduate students.Fifty undergraduate students prepared 150 simulated curved root canals in resin blocks with three Ni-Ti file systems -ProFile � (PF), Manual ProTaper � (MPT), Rotary ProTaper � (RPT). Every student prepared 3 simulated root canals with each system respectively. After root canal preparation, the Ni-Ti files were evaluated for distortion or breakage. Assessments were made according to the presence of various types of canal aberrations. The pre-and post-instrumented canal images were attained and superimposed. The instrumented root canal width were measured and calculated for the net transportation (deviation) and the centering ratio.Under the condition of this study, both ProTaper � systems allowed significantly more removal of root canal wall than the ProFile � system. In the important other aspects such as the centering ratio, there was no significant differences between the systems. Novice dental students were able to prepare curved root canals with any kinds of Ni-Ti file systems with little aberration and great conservation of tooth structure. Students want to learn effective methods and at the same time simple rotary procedures. The rotary ProTaper � systems were one of the most compatible to these students from the point of view of cutting ability. The ProFile � system was also compatible in safe and gentle shaping. [J Kor Acad Cons Dent 30(1):38-48, 2005]

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Section: ⅳ Discussionmentioning

confidence: 99%

Relative efficacy of three Ni-Ti file systems used by undergraduates

Kim

Park

Hur

2005

J Korean Acad Conserv Dent

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“…The study using mathematic models have demonstrated that ProTaper instruments work longer in a super elastic phase than instruments with a Ufile design, allowing for high performance and less risk 20) . According to Calberson et al 21) , ProTaper instruments performed acceptable tapered preparations in all canal types. Iqbal et al 22) reported that ProTaper system is able to optimally enlarge root canal with minimal transportation and loss of working length in vitro study compared with ProFile system.…”

Section: ⅳ Discussionmentioning

confidence: 99%

“…The cross-section of Mtwo file is S-shape while that of ProTaper is triangular 18) . There were a few reports about Mtwo rotary 11,18,19) , however, several researches have been studied for the safety and the efficiency of crown-down technique using ProTaper system [20][21][22] . The study using mathematic models have demonstrated that ProTaper instruments work longer in a super elastic phase than instruments with a Ufile design, allowing for high performance and less risk 20) .…”

Section: ⅳ Discussionmentioning

confidence: 99%

“…The aberration (elbow) might leave a significant portion of un-instrumented canal wall which would be difficult to obturate 29) . In ProTaper system, tooth structure can be removed excessively when this instrument is left in the canal too long with its active design 21) . It is therefore of utmost importance to follow the manufacturer' s instructions and not to leave the ProTaper to prepare the root canal for longer than 1 second or not to use the ProTaper too much when reaching the desired working length 14) .…”

Section: ⅳ Discussionmentioning

confidence: 99%

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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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“…54 Aletlerin pozitif rake açısı ve kesici olmayan bir uç şekli vardır. 55 Bu dizayn alet bıçakları-nın kanal duvarına temasını arttırmakta ve kök ucu yönünde konikleşen düz bir yüzey elde edilmesini sağlamaktadır.…”

Section: Protaperunclassified