8/24/2023 0 Comments Handpiece for sybron endo iii![]() The number of Chinese papers increased rapidly during the 5 years from 2002 to 2007, including 265 clinical studies investigating quality of obturation, clinic emergency, and efficacy of cleaning. But the English studies about clinical performance of NiTi files is relatively low, with a total of 35 papers. In the past 5 years from 2015 to 2021, the studies on efficacy of cleaning in English has increased slightly. The number of English studies on shaping ability ranks second. Mechanical properties of NiTi files cover the torsion, stiffness, and fatigue resistance of files and surface structure. From 2005 to 2021, more than 50% of the published studies, a total of 398 papers with an annual average of 27 papers, focused on the mechanical properties of NiTi files and ranking first among the topics. With the popularization of engine-driven rotary NiTi instruments in clinical practice, researchers continue to find and solve problems, and the technology, design, and manufacturing of NiTi instruments are constantly changing, thus promoting the rapid increase in research studies (Figs. From 1995 to 2005, the number of studies had slowly increase. 9 No.These studies included 4 research directions: cleaning efficacy of instrumentation, shaping ability of root canal preparation, mechanical properties of NiTi files, and clinical outcome of root canal therapy. 1-2 (2011)Įffect of heat treatment on the cyclic fatigue resistance of NiTi endodontic openersĪnnali di stomatologia: Vol. 2 (2017)Įxperience of dental caries and its effects on early dental occlusion: a descriptive studyĪnnali di stomatologia: Vol. 1 (2013)Īssociation between age and severity of malocclusion in the pediatric age: a cross-sectional studyĬomparison of two different debonding techniques in orthodontic treatmentĪnnali di stomatologia: Vol. Influence of file motion on cyclic fatigue of new nickel titanium instrumentsĪnnali di stomatologia: Vol. Surface roughness of glass ionomer cements indicated for uncooperative patients according to surface protection treatmentĪnnali di stomatologia: Vol. 1-2 (2016)įracture resistance of endodontically treated teeth restored with a bulkfill flowable material and a resin composite ![]() In vitro evaluation of carrier based obturation technique: a CBCT studyĪnnali di stomatologia: Vol. 2 (2018)Ĭontrol of oral hygiene in the orthodontic patient: comparison between public facility and private practiceĪnnali di stomatologia: Vol. The effect of a brushing motion inside a sequence: an in vivo studyĪnnali di stomatologia: Vol. According to the results, both carbon and stainless steel instruments presented similar fatigue resistance when used with M4 reciprocating handpiece in double curved canals. No significant differences were observed between groups (p=0,062).Ĭonclusions. Mean values (and SD) were 527 (± 89) seconds for the CS instruments and 548 (± 104) seconds for the SS files. Ten instruments of each group were tested for resistance to cyclic fatigue with a reciprocating M4 handpiece inside an artificial S-shaped canal the time to fracture was recorded for each file and data were statistically analyzed (ANOVA). ![]() 02 taper) made from different alloys were selected: Group SS - stainless steel Pathfinders (Sybron Endo) and Group CS - carbon steel Pathfinders size K2 (Sybron Endo). ![]() Manual instruments designed for glide path (size #9 ISO. The aim of this in vitro study was to compare cyclic fatigue resistance of these two different types of manual Pathfinder instruments used in a M4 reciprocating handpiece in double curved artificial canals. The Pathfinders (SybronEndo, USA) are hand files designed to negotiate complex canals, made from stainless steel (SS) or carbon steel (CS) alloys. A mechanical glide path can be performed using manual files with handpieces, such as M4 Handpiece (SybronEndo, USA) that allows a 30°/30° reciprocating motion. The manual files are still widely used for initial canal negotiation prior the use of nickel-titanium shaping instruments, to determine working length and to verify patency. GamberiniĬyclic fatigue, endodontic instruments, carbon steel, stainless steel, reciprocating handpiece AbstractĪim. Mechanical resistance of carbon and stainless steel hand instruments used in a reciprocating handpiece Authors
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