热激活镍钛弓丝说明书 - 深圳市速航科技发展有限公司
镍钛弓丝性能及其影响因素的研究进展

毒 性 、急性 毒性 实验 、植 入 实验 等 生物 学评 价, 测 得镍 钛合 金全
能 的镍 钛 弓丝 ,又称作 第 3代 温控 型镍 钛合 金 弓丝和 热激 活型镍
钛合金 。 该类 弓丝刚 性低 、回弹 性好 ,其相 变温 度 A f在 3 5 ℃左
一
吸收和支抗丧失日 。
1 、 镍 钛合 金丝的 发展和 分类 :镍钛合 金 弓丝在 正畸 临床应 用 大致经 历 了以下 3个 主要 的发展 阶段 : 第 1代 ,普 通镍钛 合金 弓丝 时代 , 由 A n d r e a s e n引入正 畸临
床。其相变温度 ( a u s t e n i t e i f n a l t e mp e r a t u r e ,Af )高于口腔正常温
氏体 发生相 变 的可 逆性 。 当 弓丝受 外力 形变 时, 首先 在澳 氏体状 态 下 以弹性 方式形 变 。但 很 快 由于外 力 的诱 导作用 , 澳 氏体 相逐 渐转变 为 马 氏体 相 。这个 阶段 , 在 应力, 应变 图 中形成 一长 的平 台 区 。实 际上, 这 种相 变转变 可 能是不 彻底 的;弓丝卸 载时, 首 先应 力 有一个 衰减 期, 继 之 马 氏体相 逐渐 转变 回澳 氏体相 , 形成第 二个 平 台区 。在此 平 台区,弓丝 发生 明显 的形变 , 释 放的 力却几 乎保持 不 变, 直 至完全 恢复 到澳 氏体相 时, 应 力/ 应变又 呈现直 线关 系 ¨ 。 2 . 2 形 态记 忆效应 : 镍 钛 弓丝 在奥 氏体相 或母相 状态 时 , 经过
超 弹性 镍钛合 金 弓丝在 应 力作用 下会 发 生相变 且 具有 超弹 性 ( 又
热激活镍钛丝的一些相关知识

热激活镍钛丝的一些相关知识用以描述镍钛丝硬度主要有两个方面,马氏体状态是指弓丝最软,弯曲程度最高的状态。
奥氏体状态是指弓丝最硬的状态。
这均是室温下弓丝的状态。
马氏体状态的弓丝在受到热时候会发生明显的变化,转变为奥氏体状态,称之热激活。
尽管奥氏体状态的弓丝也会发生类似的变化,但变化程度较小,几乎不可察觉。
马氏体状态的弓丝较奥氏体状态的弓丝弹性好得多,也就是在变形之后具有强的恢复到初始形态的能力,而且不容易被折断;而奥氏体状态的弓丝产生的力量高于马氏体状态的弓丝的42%,但是,马氏体状态的弓丝释放的力量更加持久恒定。
两种弓丝的弹性形变能力类似,但马氏状态的弓丝在室温时可以发生暂时性形变,在口腔温度环境时可以恢复到初始形态,因此,大大提高了它形变的实际范围。
热激活弓丝是早期治疗阶段的理想选择,由于其实际形变范围广,而且力量柔和持久,因此适用于作为初始弓丝。
理论上讲,它可以在严重错位牙的托槽内完全就位。
圆丝和矩形丝均可以作为初始弓丝。
热激活镍钛丝的优点:1患者痛苦少:这源于逐渐增加的力值及最终的轻力,受控的热活性可防止在进食热饮或者热食物时力值突然增加,患者可通过喝冷水来缓解过大的力值。
2托槽脱落及陶瓷托槽破裂少:这是由于作用力逐渐增加的轻力。
这种弓丝对于陶瓷托槽十分理想。
弓丝在低温状态下可以保持其马氏体状态,这有助于进一步减小初始力值,使弓丝的放置容易。
3弓丝断裂少:由于其较奥氏体状态的弓丝柔软,因此在受力后不易折断。
4椅旁工作时间减少:由于其形变范围大,可以减少调整次数和弓丝的更换次数。
5治疗时间缩短:初步研究表明,早期的转矩控制及轻而持续力的使用可以缩短总的治疗时间,在直丝弓托槽上早期使用矩形丝可以使牙齿直接向理想的位置移动。
缺点:不能有效地维护牙弓形态,最好不要用于关闭间隙,因为弹力圈及螺簧的力量会使弓丝变形,牙齿倾斜。
另外,尽管热激活镍钛丝能缩短椅旁工作时间,但移动牙齿的时间要长,医生应耐心等待弓丝充分的发挥作用。
镍钛合金弓丝机械性能的研究进展

牙科设备镍钛合金弓丝机械性能1 镍钛合金弓丝及其机械性能牙科设备镍钛合金弓丝自20 世纪70 年代由Andreasen等[1- 2]引入正畸临床以来,以其能释放出较为持续、柔和的矫治力受到临床正畸医生的推崇。
镍钛合金弓丝在正畸临床应用大致经历了以下3 个主要的发展阶段。
第1 代,普通镍钛合金弓丝时代,由Andreasen引入正畸临床。
其相变温度(austenite finaltemperature,Af)高于口腔正常温度(37 ℃),在临床使用过程中不会发生相变,不表现出超弹性与形状记忆功能。
因其形变释放的力偏大,力值衰减较快且不易弯曲成形,其临床使用受到限制。
第2 代,超弹性镍钛合金弓丝时代,诞生于20 世纪80 年。
超弹性镍钛合金弓丝在应力作用下会发生相变且具有超弹性(又称拟弹性),其释放的力值较第1 代更柔和,也更持久。
因其相变温度Af 远低于人体温度,故在口腔正常温度下此类镍钛弓丝不会发生相变,不能在临床应用中表达形状记忆功能。
第2 代超弹性镍钛合金弓丝目前仍在临床广泛使用。
第3 代,诞生于20 世纪90 年代,是具有真正形状记忆功能的镍钛弓丝,又称作第3 代温控型镍钛合金弓丝和热激活型镍钛合金。
该类弓丝刚性低、回弹性好,其相变温度Af 在35 ℃左右,可在正常口腔温度内发生相变,从而表现出超弹性和临床所需要的形状记忆功能。
2 温度对牙科设备镍钛合金弓丝机械性能的影响人的口腔温度受体温、外界温度、口腔呼吸、摄入食物、吸烟、开闭口等因素的影响[3],并非恒定不变。
有学者发现,口腔温度的波动对正畸弓丝,尤其是具有温度敏感性的镍钛丝的机械性能会产生影响。
Iijima等[4]在23、37、60 ℃的恒定温度条件下检测超弹性镍钛合金方丝与温控型镍钛合金方丝的机械性能后发现,根据克劳修斯- 克拉佩隆(Clausius- Clapayron)模式,随温度的升高,镍钛合金弓丝诱导马氏体相变所需的临界应力增大;在温度由37 ℃上升至60 ℃再降回至37 ℃状态下时,以上镍钛合金弓丝在最后37 ℃的力值较最初37 ℃的力值大0.530~1.039 N。
热激活镍钛弓丝和普通镍钛弓丝在正畸治疗中的效果比较

热激活镍钛弓丝和普通镍钛弓丝在正畸治疗中的效果比较陈了斐;张合城;廖武堂【摘要】目的比较热激活镍钛弓丝与普通镍钛弓丝在正畸治疗中的的疗效差异.方法选取2014年1月~2016年1月我院42例实施正畸治疗的患者,随机分为研究组和对照组,每组21例.对照组给予普通镍钛弓丝正畸治疗,研究组患者给予热激活镍钛弓丝治疗,对两组的排齐整平时间、弓丝断裂次数、托槽脱落次数、治疗总时间、视觉模拟评分法(VAS)疼痛评分情况及不良反应情况进行观察比较.结果研究组的排齐整平时间、治疗总时间分别为(18.48±2.13)w、(82.43±5.26)w,短于对照组的(24.83±2.66)w、(91.61±6.62)w(P<0.05);研究组的弓丝断裂次数、托槽脱落次数均较对照组少(P<0.05);治疗后研究组的VAS评分较对照组低(P<0.05);两组均无炎症、过敏等不良反应,耐受性好.结论热激活镍钛弓丝在正畸治疗中效果确切,可显著减少弓丝断裂次数,节省治疗时间,减轻疼痛反应,优于普通镍钛弓丝,值得临床推广.【期刊名称】《现代诊断与治疗》【年(卷),期】2017(028)014【总页数】3页(P2553-2555)【关键词】热激活;镍钛弓丝;正畸【作者】陈了斐;张合城;廖武堂【作者单位】佛山市第一人民医院禅城医院口腔科,广东佛山 528061;佛山市第一人民医院禅城医院口腔科,广东佛山 528061;佛山市第一人民医院禅城医院口腔科,广东佛山 528061【正文语种】中文【中图分类】R783.5随着口腔材料学的不断发展,应用于正畸治疗的口腔正畸材料种类越来越多,弓丝是其中的重要组成[1]。
弓丝按材质的不同可分为不锈钢、镍钛丝及其它合金弓丝,每种性能和优缺点各不相同,在口腔畸形矫正方面特点也各不相同。
[2]不锈钢丝由于刚度大,正畸过程中难以控制适当的矫治力,正畸效果较镍钛弓丝差,在临床正逐渐被淘汰,热激活镍钛弓丝是目前临床应用最广泛的正畸材料,在镍钛丝中添加铜使材料具有良好的形状记忆效应,且临床不良反应少[3,4]。
镍钛弓丝的特性及临床效果

镍钛弓丝的特性及临床效果发表时间:2014-07-03T10:16:12.343Z 来源:《中外健康文摘》2014年第9期供稿作者:刁一凯[导读] 超弹性。
超弹性镍钛合金的最基本特征是超弹性。
超弹性的本质是应力诱发金属马氏体向澳氏体发生相变的可逆性。
刁一凯(青岛市李沧区中心医院 266300)【中图分类号】R783.5 【文献标识码】A 【文章编号】1672-5085(2014)09-0287-02 目前市场上的各种镍钛合金弓丝是通过不同的冶金技术而获得, 大致可分为三种类型:(1)普通型镍钛合金。
此类镍钛丝释力偏大,释力过程中力的衰减较迅速;不能弯制成形,脆而易折, 目前临床使用已不多;(2)超弹性镍钛合金。
具有超弹性行为, 有良好的回弹性能;(3)温控镍钛合金。
同时具有超弹性和形状记忆特性。
一、特性1、超弹性。
超弹性镍钛合金的最基本特征是超弹性。
超弹性的本质是应力诱发金属马氏体向澳氏体发生相变的可逆性。
与金属内部结构转变有关, 结果就是在一定范围的卸载过程中恒力的释放。
它表现在:当弓丝受外力形变时,首先在澳氏体状态下以弹性方式形变。
但很快由于外力的诱导作用, 澳氏体相逐渐转变为马氏体相。
这个阶段, 在应力/应变图中形成一长的平台区。
实际上, 这种相变转变可能是不彻底的; 弓丝卸载时, 首先应力有一个衰减期, 继之马氏体相逐渐转变回澳氏体相,形成第二个平台区。
在此平台区, 弓丝发生明显的形变,释放的力却几乎保持不变,直至完全恢复到澳氏体相时, 应力/应变又呈现直线关系。
2、超弹性的不恒定性。
超弹性镍钛丝的另一个显著特征是卸载曲线随加载力的大小而改变。
即加载较小时刚度较大,释力较大;加载较大时刚度较小,释力反而较小。
当弓丝形变1mm时,起始卸载力为247g。
当同一根弓丝形变至4mm时,只产生74g的力。
超弹性镍钛的刚度除了依赖于它的尺寸、形态、温度转变范围、弓丝形变量外,也与弓丝所受到的限制状态有关。
ProTaper镍钛旋转文件使用说明书

MANUAL PROTAPER FILESC LINICALD IRECTIONS F OR U SEB ACKGROUND:ProTaper nickel titanium rotary files have patented, progressively tapered and advanced flute designs providing the flexibility and efficiency to achieve consistently successful cleaning and shaping results. Importantly, precurved manual ProTaper files are the instruments of choice for managing canals that exhibit difficult anatomy, as an example a sharp apical curve, an iatrogenic mishap, such as a ledge, or a pathological defect resulting from internal resorption.G UIDELINES FOR U SE:•Establish straightline access•Preflare the orifice(s) with the X-Gates or SX•Use #10 and #15 hand files to create a glide path and secure canals•Negotiate and secure canals with a viscous chelator•Shape canals with an aqueous intracanal reagent•Clean flutes frequently and inspect for signs of distortion•Use instruments with recommended motion•Pre-curve manual ProTaper files when there is not a smooth, reproducible glide pathT HE M ANUAL P RO T APER T ECHNIQUE:1)Fill the pulp chamber with either Glyde or Sodium Hypochlorite (NaOCl) for all initialnegotiation procedures. Explore the coronal two-thirds of the canal with stainless steel Nos. 10 and 15 hand files, using a reciprocating back and forth motion. Work those instruments passively and progressively until they are loose.2)Start the ProTaper sequence with S1 (purple). The apical extent of S1 will passively followthe portion of the canal secured with hand files. S1 is designed to cut dentin, in a crown down manner, with its bigger, stronger and more active blades. Irrigate, recapitulate with the 10K File to break up debris, then re-irrigate.3)Manual ProTaper Handle Motion:e a clockwise motion and gently rotate the handle until it is just snug. When thehandle is snug, the flutes of the file are lightly engaging dentin.b.Cut dentin by rotating the handle clockwise while simultaneously withdrawing the file.c.If over-engaged, disengage the file by rotating the handle counterclockwise 45-90degrees while concomitantly withdrawing the instrument to prevent any given file from inadvertently advancing deeper into the canal.d.Repeat the handle motions until desired length is achieved.e.Depending on the length, curvature, and diameter of any given canal, it may require oneor more passes to carry a file to the desired depth.4)In more difficult canals, one, two or three recapitulations with S1 may be necessary to pre-enlarge the coronal two-thirds of the canal. Frequently clean the blades, then continue using this file until it reaches the depth of the 15 hand file. Irrigate, recapitulate and then re-irrigate.5)Once the pre-enlargement procedure is finished, use a precurved No. 10K File in thepresence of NaOCl or Glyde to negotiate the rest of the canal and to establish patency.Determine working length with No. 15K File.6)When a smooth glide path to the terminus is verified, sequentially carry first S1 then S2 tothe full working length. Remember to irrigate, recapitulate and re-irrigate after each ProTaper instrument.7)With the canal flooded with irrigant, work the F1 (yellow 20/07) to length in one or morepasses. If the F1 ceases to advance deeper into the canal, remove the file, clear its blades, then continue with its use until it reaches length. Irrigate, recapitulate and re-irrigate.8)Following the use of F1 to length, gauge the foramen with a 20 hand file. If the 20 hand fileis snug at length, the canal is shaped and ready to fill. If the 20 hand file is loose at length, proceed to the F2 and, when necessary, the F3, gauging after each Finisher with the 25 and30 hand files, respectively.。
镍钛合金丝规格书

镍钛合金丝规格书镍钛合金丝是一种超级神奇的材料呢!今天就来好好唠唠它的规格书相关的事儿。
一、镍钛合金丝的基本介绍。
镍钛合金丝呀,它可不像普通的金属丝那么简单。
这种合金丝具有独特的形状记忆效应和超弹性。
形状记忆效应就是它能记住自己原来的形状,在受到一定的变形之后,还能恢复到最初的模样,就像有记忆力一样,是不是很有趣呀?超弹性呢,就是它可以承受很大的变形而不会轻易断裂,这特性让它在很多领域都大显身手。
二、尺寸规格。
1. 直径方面。
- 镍钛合金丝的直径那可是有多种规格的。
有超级细的,像头发丝一样细的,这种细的镍钛合金丝可以用于一些精密的医疗设备或者超小型的电子元件里面。
比如说在制造一些微型的传感器时,这种细的合金丝就能发挥它的优势啦。
它可以很精准地被放置在狭小的空间里,而且还能保持良好的性能。
- 也有相对粗一些的镍钛合金丝,粗的合金丝在一些需要承受较大力量的地方就很有用。
像在航空航天领域,用于连接一些部件的时候,粗一点的镍钛合金丝就能承受住飞行过程中的各种压力和拉力,保证设备的安全。
2. 长度规格。
- 长度也是多种多样的。
有时候会有很短的一小段镍钛合金丝,这可能是用于实验室里做一些小样本的测试。
而在工业生产中,可能就会有很长很长的镍钛合金丝卷起来,就像一大卷线一样。
这些长的合金丝可以用来制作连续的结构,比如在制造一些大型的可伸缩的机械臂时,就需要很长的镍钛合金丝来保证它的伸缩功能能够正常实现。
三、物理性能规格。
1. 强度。
- 镍钛合金丝的强度可不能小看。
它的强度足够高,能在很多恶劣的环境下保持结构的完整性。
在汽车制造领域,当汽车在行驶过程中遇到颠簸或者碰撞时,使用镍钛合金丝制作的一些零部件就能凭借它的高强度,避免轻易损坏。
而且它的强度还和它的形状记忆效应和超弹性相互配合得很好,不会因为强度高就失去了它的特殊性能。
2. 弹性模量。
- 弹性模量这个概念可能有点专业,简单来说呢,就是它在受到力的作用时变形的难易程度。
Titanium Alloys 产品说明书

IntroductionTitanium (Ti) alloys are well-known superalloys due to their high strength-to-weight ratio, excellent mechanical properties, corrosion and hightemperature resistance and biocompatibility. They are widely applied in various industries and application areas, such as biomedical, aerospace, marine and automotive industries, and in 3D-printing for implant manufacturing, with Ti-6Al-4V (also called TC4 or Ti64) being one of the most important titanium alloys. It is known that the chemical composition of alloys can influence their properties and grades. The concentrations of both the additive and impurityelements in the alloy need to be strictly controlled to ensure the material’s quality. For example, Al, V, Fe, Sn, and Cu in a Ti alloy can enhance high-temperature creep resistance, while Y and Pd can improve corrosion resistance and thermal stability.1-2 Therefore, accurate elemental analysis of Ti alloys is important in terms of metallurgy and product quality.In current national standards (e.g., ASTM E2371-13, China National Standard GB/T 4698 and industry standard HB 7716.13), inductively coupled plasma optical emission spectroscopy (ICP-OES) is the specified technique for the determination of elements in the concentration range from percent to ppm in alloys due to its advantages of high matrix tolerance, wide linear range and multi-element analysis capabilities.3-5Determination of Major and Trace Elements in Titanium Alloys Using the Avio Max 550 ICP-OESA P P L I C A T I O N N O T EAUTHOR Shuli ChengPerkinElmer Shanghai, ChinaICP-Optical Emission SpectroscopyAccording to the test standard method ASTM E2371, most types of Ti alloys can be dissolved in two acid mixtures: HF-HNO 3 or HCl-HF-HNO 3, where HCl is needed especially for alloys containing Mo, Pd and Ru. To compare the effectiveness of the digestion, the samples were digested with two acid mixtures: HF+HNO 3 (5:1) and HCl+HF+HNO 3 (2:3:1).Approximately 0.5 g of Ti64 alloy samples were weighed and placed into DigiTUBE ® digestion tubes, followed by deionized (DI) water and acids, as shown in Table 2. Due to the strong reactivity, all acids should be added dropwise. The DigiTUBEs were then gently heated in the Sample Preparation Block (PerkinElmer, Shelton, Connecticut, USA), until the samples were completely dissolved, according to the program in Table 3. The samplesolutions were cooled to room temperature and diluted to 100 mL with deionized water in a polypropylene volumetric flask. In addition, 1 g of pure Ti metal was digested with HF and HNO 3 and diluted to 50 mL. This solution contains 2.0 g/L of Ti for preparing matrix-matched standard solution.However, one of the challenges of analyzing Ti alloys with ICP-OES is spectral interference caused by matrix elements: Ti, Al, V and Fe. In this application, the major and trace elements in Ti64 alloy samples were analyzed with the PerkinElmer Avio ® 550 Max fully simultaneous ICP-OES, demonstrating its excellent capability of accurate measurement of complex matrix samples.ExperimentalSample PreparationSamples consisted for NIST 173c Titanium Alloy UNS R56400 (National Institute of Standards and Technology, Bethesda, Maryland, USA) and an unknown Ti64 powder. NIST 173c was used for method development and accuracy validation; thecertified values are listed in Table 1.Calibration Standards PreparationAll the calibration standard solutions were prepared PerkinElmer single- and multi-element standard solutions, as well as theprepared 2.0 g/L Ti stock. The calibration standards were matrix-matched to the approximate levels of the major elements and contained 4500 ppm Ti, along with the analyte concentrations in Table 4, which were selected to match the expected concentrations in the Ti alloys.InstrumentationAll analyses were performed with the Avio 550 Max fullysimultaneous ICP-OES (PerkinElmer), which features a unique echelle optic and segmented-array charge coupled devicedetector (SCD)6, providing high-speed analysis and simultaneous measurements of all elements. The instrument’s proprietary Universal Data Acquisition (UDA)7 technology allows collection of all the spectral data for every sample in a single run, which provides flexibility of wavelength selection of all elements and simplifies method development. Plus, the combination of Flat Plate™ plasma technology 8 with vertical torch design enables the Avio to handle high matrix samples without large dilutions. And last, but certainly not least, the instrument’s dual plasma view 9 capability allows the measurement of major and minor elements in one method by setting the radial view for the determination of major elements, while axial view is used for minor elements due to its higher sensitivity.An HF-resistant nebulizer and spray chamber were used. Theinstrument's operating parameters, the wavelengths, plasma view, and background correction are listed in Tables 5 and 6. All data processing was done with Syngistix™ for ICP software.Results and DiscussionWhen analyzing metal samples, higher dilution is generally used to decrease matrix effects and spectral interferences. However, dilution also decreases the analyte concentration, which may make measurements of low-level analytes more difficult. In this work, the Ti alloy samples were diluted 200 times for analysis of all elements, from ppm to percent levels.200ppm V4500ppm Ti10ppm F e1ppm P d1ppm R u(a)(b)Figure 1. Spectra showing interferences of (a) 200 ppm V and 4500 ppm Ti on 1 ppm Pd 340.450 and (b) 10 ppm Fe on 1 ppm Ru 240.272.No MSFNo MSFMSF MSF(a)(b)Figure 2. Spectra of (a) Pd and (b) Ru spiked at 0.1 ppm in NIST CRM 173C, with (pink) and without (blue) MSF applied.To deal with spectral interferences caused by major elements, the Multicomponent Spectral Fitting (MSF) capability (includedin Syngistix software 10) was applied to Ru and Pd. Figure 1 shows the overlayed spectra of 1 ppm of Pd and Ru and the matrix elements: 4500 ppm Ti, 200 ppm V and 10 ppm Fe. By applying MSF, as shown in Figure 2, the spectral interferences were effectively removed, yielding an interference-free spectrum (pink), allowing accurate determination of Pd and Ru at very low concentration levels (0.1 mg/L).Excellent calibrations were obtained, with regression coefficients greater than 0.999 for all elements. The method detection limits (MDLs) were determined by analyzing 10 replicates of the 4500 mg/L Ti matrix blank solution. Figure 3 shows the reporting limits (LOR) in sample calculated as 3*MDL. The LORs are far below the lower limits specified on ASTM E2371-13, demonstrating the excellent sensitivity of theAccuracyTo verify the accuracy of the results, NIST CRM 173C wasprepared with both acid mixtures and analyzed. The results from the two digestion acid mixtures are compared in Figure 4 and show that all the elements were within ± 10% of the certified values, demonstrating that both acid mixtures are suited for the that the Avio 550 Max system is capable of measuring elements at low levels by using MSF to correct for spectral interferences.Figure 4. Recoveries for the certified elements in CRM 173c sample digested with Figure 5. Recoveries for the spiked elements in NIST 173c sample.ConclusionThe results presented here demonstrate the ability of Avio 550 Max fully simultaneous ICP-OES to analyze challenging Ti alloy samples. The Flat Plate plasma technology, vertical torch design and dual view enable the Avio 550 Max to perform this analysis and obtain excellent recoveries from a wide concentration range. Multicomponent Spectral Fitting (MSF) was successfully applied for spectral interference correction, ensuring accurate results for all elements with excellent recoveries.Figure 3. LOR of analytes in Ti alloy measured (blue) and specified in LOR measured LOR specified in ASTM 2371References1. Matthew J. Donachie, Jr., Titanium, a Technical Guide, 2000.2. https:///3. A STM E2371-13, Standard Test Method for Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry.4. G B/T 4698-2019, Methods for chemical analysis of titanium sponge, titanium and titanium alloys.5. H B 7716 -2002, Spectrometric analysis of titanium alloys.6. “Avio 550/560 Max ICP-OES Optical System and SCD Detector”, Technical Note, PerkinElmer, 2020.7. “Universal Data Acquisition in Syngistix Software for Avio 550/560 Max ICP-OES”, Technical Note, PerkinElmer, 2020.8. “Flat Plate Plasma Technology on the Avio Max Series ICP-OES”, Technical Note, PerkinElmer, 2020.9. “Vertical Dual View on the Avio Max Series ICP-OES”, Technical Note, PerkinElmer, 2020.10. “Multicomponent Spectral Fitting”, Technical Note,PerkinElmer, 2017.Consumables UsedFor a complete listing of our global offices, visit /ContactUsCopyright ©2023, PerkinElmer U.S. LLC. All rights reserved. PerkinElmer ® is a registered trademark of PerkinElmer U.S. LLC. All other trademarks are the property of their respective owners.PerkinElmer U.S. LLC 710 Bridgeport Ave.Shelton, CT 06484-4794 USA (+1) 855-726-9377。
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热激活镍钛弓丝说明书
一、制造材料:镍钛二元合金
该合金具有优良的超弹性和形状记忆功能,耐腐蚀,生物相容性好。
二、规格型号:弓形:卵圆形;尖圆形;方圆形。
圆丝0.012"、0.014"、0.016"、0.018"、0.020"、0.022"
方丝0.016"×0.016"、0.016"×0.022"、0.017"×0.022"、0.018"×0.022"、0.017"×0.025"、
0.018"×0.025"、0.019"×0.025"、0.021"×0.025"
以上弓丝均分为上颚、下颚。
每袋包装5支。
三、热激活原理:热激活弓丝相变温度:动作开始温度(AS)----22℃±2℃;
动作结束温度(Af):32℃±2℃.
热激活镍钛弓丝在AS温度下弹性丧失,在Af温度上弹性恢复。
四、热激活特点:
1.在室温下具延展性,弯曲自如,便于结扎,降低了插入托槽所需的时间,有益复杂的临床治疗和敏感患者。
2.在口腔温度环境中呈现良好的超弹性,依靠出色的预成弓形和持久的弹性恢复力,高效地排齐、整平牙列。
3.当热激活弓丝受到体温作用时会逐渐增加力值,这种缓慢增加的力不会给患者造成不适感。
也不会给托槽施加过大的力,其最终产生的力小于同型号超弹性镍钛弓丝,所以不容易造成支抗丧失。
五、正畸专家建议:
1.成人错颌患者、特殊敏感患者、牙体错位扭转严重患者优先考虑使用热激活镍钛弓丝。
2.早期排齐建议以0.016"作为起始弓丝。
3.既排齐又要控根的患者可用0.016×0.022的热激活方丝。
4.由于热激活弓丝形变范围大,可以减少弓丝的调整次数,减少复诊时间,避免托槽脱落及公司断裂。