Bending Properties of a New Nickel-Titanium Alloy with a Lower Percent by Weight of Nickel

Testarelli, Luca; Plotino, Gianluca; Al-Sudani, Dina; Vincenzi, Valentina; Giansiracusa, Alessio; Grande, Nicola M.; Gambarini, Gianluca

doi:10.1016/j.joen.2011.05.023

Cited by 126 publications

(121 citation statements)

References 19 publications

Supporting

Mentioning

104

Contrasting

Unclassified

Order By: Relevance

“…Along with the progress of raw materials, endodontic files have shown a trend of continuous improvement in flexibility and fracture resistance. The new endodontic NiTi instruments manufactured with thermomechanical treatment of NiTi wires have greater flexibility than similar instruments made from conventional SE wires (41,43,107). To maximize their clinical potential, clinicians should expect to make corresponding adjustments during the transition either from stainless steel hand files to rotary NiTi system or between rotary file systems featuring different NiTi materials.…”

Section: Clinical Applicationsmentioning

confidence: 99%

Current Challenges and Concepts of the Thermomechanical Treatment of Nickel-Titanium Instruments

Shen

Zhou

Zheng

et al. 2013

Journal of Endodontics

458

438

View full text Add to dashboard Cite

Introduction: The performance and mechanical properties of nickel-titanium (NiTi) instruments are influenced by factors such as cross-section, flute design, raw material, and manufacturing processes. Many improvements have been proposed by manufacturers during the past decade to provide clinicians with safer and more efficient instruments. Methods: The mechanical performance of NiTi alloys is sensitive to their microstructure and associated thermomechanical treatment history. Heat treatment or thermal processing is one of the most fundamental approaches toward adjusting the transition temperature in NiTi alloy, which affects the fatigue resistance of NiTi endodontic files. The newly developed NiTi instruments made from controlled memory wire, M-Wire (Dentsply Tulsa Dental Specialties, Tulsa, OK), or R-phase wire represent the next generation of NiTi alloys with improved flexibility and fatigue resistance. The advantages of NiTi files for canal cleaning and shaping are decreased canal transportation and ledging, a reduced risk of file fracture, and faster and more efficient instrumentation. The clinician must understand the nature of different NiTi raw materials and their impact on instrument performance because many new instruments are introduced on a regular basis. Results: This review summarizes the metallurgical properties of next-generation NiTi instruments, the impact of thermomechanical treatment on instrument flexibility, and the resistance to cyclic fatigue and torsion. Conclusions: The aim of this review was to provide clinicians with the knowledge necessary for evidence-based practices, maximizing the benefits from the selection and application of NiTi rotary instruments for root canal treatment. (J Endod 2013;39:163-172)

show abstract

Section: Clinical Applicationsmentioning

confidence: 99%

Current Challenges and Concepts of the Thermomechanical Treatment of Nickel-Titanium Instruments

Shen

Zhou

Zheng

et al. 2013

Journal of Endodontics

458

438

View full text Add to dashboard Cite

show abstract

“…Therefore, single-visit root canal treatment has become a common practice also in non-vital cases, and offers several advantages, including a decreased number of operative procedures (3), and no risk of inter-appointment leakage through temporary restorations (1). In addition, single-visit root canal therapy is less time consuming and more economical; as a consequence, innovative manufacturing processes to produce better istruments (4)(5)(6)(7), and new instrumentation techniques have been recently commercialized to improve simplicity and safety of treatment by using reciprocation motion instead of continuous rotation and by reducing the number of nickel titanium (NiTi) instruments and consequently instrumentation time (8)(9)(10). More precisely, a few years ago Dentsply Maillefer (Baillagues, Switzerland) and Dentsply VDW (Munchen, Germany) have developed two different nickel titanium instruments of greater tapers (Waveone® and Reciproc®), which are designed to be used with an innovative, proprietary reciprocating movement, and allow root canals to be prepared with one single instrument: in the majority of cases a taper.08 size 25 instrumentis selected.…”

Section: Introductionmentioning

confidence: 99%

The influence of three different instrumentation techniques on the incidence of postoperative pain after endodontic treatment

Gambarini¹

2013

ADS

View full text Add to dashboard Cite

SummaryAims. Apical extrusion of infected debris to the periradicular tissues is one of the principal causes of postoperative pain and discomfort. Recent researches have shown that reciprocating instrumentation techniques seem to significantly increase the amount of debris extruded beyond the apex and, consequently, the risk of postoperative pain. The goal of the present study was to evaluate and compare postoperative pain using three different nickel-titanium instrumentation techniques: a rotary crown-down technique using TF instruments (SybronEndo, Orange, Ca), a reciprocating single-file technique using WaveOne instruments (Maillefer DEntsply, Baillagues, CH), and a novel instrumentation technique (TF Adaptive, SybronEndo, Orange, Ca), using a unique, proprietary movement, combining reciprocation and continuous rotation. Methods. Ninety patients requiring endodontic treatment on permanent premolar and molar teeth with non vital pulps preoperatively were included in the study. The patients were assigned into three groups of 30 patients each, trying to make the groups very similar, concerning the number of root canals, presence of initial pain and periapical lesions. The teeth in group 1 (n = 30) were instrumented with a crown-down technique using TF instruments, whilst those in group 2 (n = 30) were instrumented with a single-file technique using Waveone 08 25. The third group (n = 30) used the 3-file Tf Adaprtive sequence. All techniques were performed following manufacturers' instructions and all canals were shaped, cleaned and obturated in a single-visit by the same operator. The assessment of postoperative pain was carried out at 3 days by using a visual analogue scale. VAS pain scores were compared using one-way ANOVA post hoc Tukey test. A value of p < 0.05 was required for statistical significance. Results. Results for VAS pain scores showed a statistically significant difference was found between the WaveOne (p=0,021) technique and the other two techniques. No statistical significant differences were found between TF and TF Adaptive (p= 0,087). When evaluating patient experiencing sever pain the incidence of symptoms was significantly higher with the WaveOne technique. Conclusions. Since the incidence of preoperative pain, the type of tooth and the pulp and periodontal pathology were quite similar between the three tested groups, and all the other variables (operator, irrigation, obturation) were identical, we may conclude that the difference in postoperative pain can be mainly related to the different instrumentation techniques.

show abstract

“…12 It has been manufactured by a unique process that controls the material"s memory, making the files extremely flexible but without the loss of shape memory typical of other NiTi files. 13 Twisted file (TF) (SybronEndo, Orange, CA, USA) is another new rotary file system with a triangular cross section.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Apical Transportation And Centering Ability of Three Different NITI Endodontic Files- A Comparative In Vitro CBCT Study

Bhaumik¹,

Roy²,

Das³

et al. 2017

IOSR JDMS

View full text Add to dashboard Cite

show abstract

Bending Properties of a New Nickel-Titanium Alloy with a Lower Percent by Weight of Nickel

Cited by 126 publications

References 19 publications

Current Challenges and Concepts of the Thermomechanical Treatment of Nickel-Titanium Instruments

Current Challenges and Concepts of the Thermomechanical Treatment of Nickel-Titanium Instruments

The influence of three different instrumentation techniques on the incidence of postoperative pain after endodontic treatment

Evaluation of Apical Transportation And Centering Ability of Three Different NITI Endodontic Files- A Comparative In Vitro CBCT Study

Contact Info

Product

Resources

About