Comparison of the Mechanical Behavior between Controlled Memory and Superelastic Nickel-Titanium Files via Finite Element Analysis

Santos, Leandro de Arruda; Bahia, Maria Guiomar de Azevedo; Casas, Estevam Barbosa de Las; Buono, Vicente Tadeu Lopes

doi:10.1016/j.joen.2013.07.030

Cited by 53 publications

(39 citation statements)

References 27 publications

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“…TYP instruments showed a lower bending moment than the other groups probably because they are made of an alloy that features the R-phase and B19 0 martensite; hence, there is a lower apparent modulus of elasticity at room temperature (10). This means that at the beginning of the stress-strain curve of the material, the inclination of the curve is lower for controlled memory NiTi compared with SE NiTi and the stress plateau is reached at a lower stress for the first material in which the phenomenon taking place is nothing but reorientation of previously existing martensite (16).…”

Section: Discussionmentioning

confidence: 99%

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Behavior of Nickel-Titanium Instruments Manufactured with Different Thermal Treatments

Pereira¹,

Viana²,

Buono³

et al. 2015

Journal of Endodontics

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Section: Discussionmentioning

confidence: 99%

“…The Vortex Blue and shape memory technologies use special thermal processes to control the transition temperatures, making the instruments extremely flexible at room temperature because of the presence of martensite (10,16). TYPHOON Infinite Flex instruments (TYP; Clinician's Choice Dental Products, New Milford, CT) represent this kind of technology.…”

mentioning

confidence: 99%

Behavior of Nickel-Titanium Instruments Manufactured with Different Thermal Treatments

Pereira¹,

Viana²,

Buono³

et al. 2015

Journal of Endodontics

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“…A thermally treated NiTi alloy, CM wire (Coltene/Whaledent, Altstätten Switzerland), was recently introduced to shift the austenite/martensite transition temperature, so that a stable martensitic microstructure is obtained at body temperature (Santos et al . ). This imparts to the HyFlex CM (Coltene/Whaledent) a high fatigue resistance (Shen et al .…”

Section: Introductionmentioning

confidence: 97%

Structural analysis of HyFlex EDM instruments

et al. 2016

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“…Whenever stress is applied to austenitic NiTi alloys at body and room temperature, a martensitic transformation of the austenitic crystal structure takes place (Santos et al . ). The resulting martensitic structure can accommodate greater stress without increasing the strain making the files more flexible than stainless steel and suitable for rotation or reciprocation.…”

Section: Discussionmentioning

confidence: 97%

Root canal treatment of a dilacerated mandibular premolar using a novel instrumentation approach. A case report

Chaniotis¹,

Filippatos

2016

Int Endodontic J

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A 45-year-old female was referred suffering from diffuse pain emanating from the mandibular right quadrant. The second premolar (tooth 45) was diagnosed with symptomatic irreversible pulpitis. The radiographic examination revealed a dilacerated S-shaped root configuration, with 2 severe curvatures of <2 mm radius. Under local anaesthesia and rubber dam isolation, a glide path was created until a size 10 K-file reached working length. Instrumentation to larger size was achieved with a novel approach using controlled memory files. The controlled memory files were pre-curved and passively inserted below the curvature until maximum frictional resistance. The motor was activated by maintaining light apical pressure, and the files were withdrawn from the canal. This procedure was repeated until each file could reach the working length. Chemical disinfection was achieved with positive syringe irrigation of 6% NaOCl, followed by 17% EDTA rinsing and manual dynamic gutta-percha activation of the irrigants. Canal filling was achieved using the continuous wave of condensation technique and thermoplasticized injectable gutta-percha backfill. The postoperative radiography revealed that the initial canal anatomy of the dilacerated double-curved root canal was preserved.

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Comparison of the Mechanical Behavior between Controlled Memory and Superelastic Nickel-Titanium Files via Finite Element Analysis

Cited by 53 publications

References 27 publications

Behavior of Nickel-Titanium Instruments Manufactured with Different Thermal Treatments

Behavior of Nickel-Titanium Instruments Manufactured with Different Thermal Treatments

Structural analysis of HyFlex EDM instruments

Root canal treatment of a dilacerated mandibular premolar using a novel instrumentation approach. A case report

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