Evaluation of the mechanical properties of different nickel-titanium retreatment instruments

被引：9

作者：

Weissheimer, Theodoro ^{[1
]}

Heck, Luana ^{[1
]}

Calefi, Pedro Henrique Souza ^{[2
]}

Alcalde, Murilo Priori ^{[3
]}

da Rosa, Ricardo Abreu ^{[1
]}

Vivan, Rodrigo Ricci ^{[2
]}

Duarte, Marco Antonio Hungaro ^{[2
]}

So, Marcus Vinicius Reis ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Dept Conservat Dent, Rua Ramiro Barcelos 2492, BR-90035003 Porto Alegre, RS, Brazil

[2] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Sao Paulo, Brazil

[3] Univ Sagrado Coracao, Hlth Sci Ctr, Bauru, SP, Brazil

来源：

AUSTRALIAN ENDODONTIC JOURNAL | 2021年 / 47卷 / 02期

关键词：

body temperature; cyclic fatigue; NiTi alloy; strength to bend; torsion; CYCLIC FATIGUE RESISTANCE; ROTARY INSTRUMENTS; TORSIONAL RESISTANCE; MANUFACTURE; KINEMATICS; BEHAVIOR; FRACTURE; PROTAPER; REMOVAL; SPEED;

D O I：

10.1111/aej.12474

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

This study investigated the cyclic fatigue, bending, torsional resistance and angular deflection of Pro-R 25.08, Logic RT 25.08, MK Retreatment 25.08 (MK RT) and ProTaper Retreatment D2 instruments. Cyclic fatigue test was performed until fracture in a custom stainless-steel device with water bath equipment to simulate body temperature. Fracture time was recorded. A number of cycles were calculated. Resistance to bending at 45 degrees, torsional resistance and angular deflection were evaluated. The fracture surfaces were examined by scanning electron microscopy. Statistical analysis was performed with one-way ANOVA and Tukey and Kruskal-Wallis and Dunn tests. Pro-R and Logic RT presented the highest cyclic fatigue (P < 0.05). D2 had higher strength to bend than Pro-R and Logic RT (P < 0.05). Logic RT showed the highest torque and angular deflection (P < 0.05), without differences when compared to D2 (P > 0.05). Instrument performances were dependent on their geometrical features and heat treatments.

引用

页码：265 / 272

页数：8

共 30 条

[1]

Alcalde MP, 2018, CLIN ORAL INVEST, V22, P1865, DOI 10.1007/s00784-017-2295-8

[2] Comparison between Single-file Rotary Systems: Part 2-The Effect of Length of the Instrument Subjected to Cyclic Loading on Cyclic Fatigue Resistance [J].

Azim, Adham A. ;

Tarrosh, Mohamed ;

Azim, Katharina A. ;

Piasecki, Lucila .

JOURNAL OF ENDODONTICS, 2018, 44 (12) :1837-1842

[3] Evidence for Reduced Fatigue Resistance of Contemporary Rotary Instruments Exposed to Body Temperature [J].

de Vasconcelos, Rafaela Andrade ;

Murphy, Sarah ;

Talge Carvalho, Claudio Antonio ;

Govindjee, Rajiv G. ;

Govindjee, Sanjay ;

Peters, Ove A. .

JOURNAL OF ENDODONTICS, 2016, 42 (05) :782-787

[4] The Effect of Temperature on Cyclic Fatigue of Nickel-titanium Rotary Endodontic Instruments [J].

Dosanjh, Amandeep ;

Paurazas, Susan ;

Askar, Mazin .

JOURNAL OF ENDODONTICS, 2017, 43 (05) :823-826

[5] Canal Transportation, Centering Ability, and Cyclic Fatigue Promoted by Twisted File Adaptive and Navigator EVO Instruments at Different Motions [J].

Duarte, Pedro Marks ;

da Silva, Paula Barcellos ;

Alcalde, Murilo Priori ;

Vivan, Rodrigo Ricci ;

da Rosa, Ricardo Abreu ;

Hungaro Duarte, Marco Antonio ;

Reis So, Marcus Vinicius .

JOURNAL OF ENDODONTICS, 2018, 44 (09) :1425-1429

[6] Movement kinematics and cyclic fatigue of NiTi rotary instruments: a systematic review [J].

Ferreira, F. ;

Adeodato, C. ;

Barbosa, I. ;

Aboud, L. ;

Scelza, P. ;

Zaccaro Scelza, M. .

INTERNATIONAL ENDODONTIC JOURNAL, 2017, 50 (02) :143-152

[7] A critical appraisal of studies on cyclic fatigue resistance of engine-driven endodontic instruments [J].

Huelsmann, M. ;

Donnermeyer, D. ;

Schaefer, E. .

INTERNATIONAL ENDODONTIC JOURNAL, 2019, 52 (10) :1427-1445

[8] Research that matters: studies on fatigue of rotary and reciprocating NiTi root canal instruments [J].

Huelsmann, Michael .

INTERNATIONAL ENDODONTIC JOURNAL, 2019, 52 (10) :1401-1402

[9] Flexibility and torsional resistance of three nickel-titanium retreatment instrument systems [J].

Hussne, R. P. ;

Braga, L. C. ;

Berbert, F. L. C. V. ;

Buono, V. T. L. ;

Bahia, M. G. A. .

INTERNATIONAL ENDODONTIC JOURNAL, 2011, 44 (08) :731-738

[10] Effect of temperature on the cyclic fatigue resistance of thermally treated reciprocating instruments [J].

Klymus, Michel Espinosa ;

Alcalde, Murilo Priori ;

Vivan, Rodrigo Ricci ;

Reis So, Marcus Vinicius ;

de Vasconselos, Bruno Carvalho ;

Hungaro Duarte, Marco Antonio .

CLINICAL ORAL INVESTIGATIONS, 2019, 23 (07) :3047-3052

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