objective to evaluate clinical effect of the handling protaper nickel-titanium rotary instruments in preparation of canals of posterior teeth.methods 96teeth with pulpitis or periapical periodontitis were instrumented by handling protaper rotary instruments using step-down technique,and by k files using step-back technique for control.all teeth were obturated with lateral condensation methods.the efficiency of preparation was analyzed with ra-diographs before and after operation.results no transportation,apical blockage and ledge were found in test.the technique could keep canals smooth.there were two ledge,one instrument fracture and nine transportation in control.the operative time was shorter and post treatment pain seldom occurred in handling protaper group.conclusion the handling protaper niti rotary instruments can prepare the canals effectively and safety.after the preparation,the canals could be easily washed,sterilized and filled.it is an efficient instrumentation method for posterior teeth's canals and be used widely.

目的 評(píng)價(jià)手用protaper預(yù)備后牙根管的臨床效果。方法選取患有牙髓炎和根尖周炎的后牙96例亚洲美女操逼视频一区二区，隨機(jī)分成試驗(yàn)組和對(duì)照組各48例福利微拍日韩精品，試驗(yàn)組用手用protaper多錐度鎳鈦旋轉(zhuǎn)器械逐步伸入法預(yù)備根管韩国日本欧美三级一级爱国产，對(duì)照組用k銼，逐步后退法預(yù)備根管日韩激情一级毛片免费，兩組均用側(cè)向加壓充填法充填根管，根據(jù)治療前后的x線片丝袜欧洲另类自拍视频在线观看网站，評(píng)價(jià)后牙根管預(yù)備效果成年18岁在线网站。結(jié)果試驗(yàn)組無(wú)根管偏移、根尖阻塞欧美在线免费观看av片、臺(tái)階www.色色视频com，且根管壁平滑流暢，無(wú)器械折斷等并發(fā)癥發(fā)生殴美大吊性交久。對(duì)照組有2例臺(tái)階形成操b福利视频，器械折斷1例，根管偏移9例精品自拍偷拍视频。試驗(yàn)組操作時(shí)間短且術(shù)后疼痛輕微黄页网站在线观看高清免费。結(jié)論應(yīng)用手用protaper預(yù)備后牙根管快速、安全ww97在线观看，成形效果好亚洲综合操逼网，易于根管沖洗消毒及填充，可視為臨床上預(yù)備后牙根管的有效方法日黄色网址。

Not even a god, an angel, M a ra or Brahm a [104] can turn into defeat the victory of such a person who is self-subdued and ever restrained in conduct.

若有克己者2020黄色在线，常行自節(jié)制。105 天神国产日韩欧美在线。乾闥婆 [107]精品中的精品自拍，魔王并梵天，皆遭於敗北全网在线观看黄色网站，不能勝彼人一级a性色生活片久久毛片照片。

Units transported from the bomber are paradropped to their targets, and like paratroopers in the previous Red Alert titles are vulnerable to anti-aircraft fire.

從轟炸機(jī)里傳送的單位會(huì)以傘降的方式到達(dá)目標(biāo)，就像RA系列中的傘兵一樣它們對(duì)于防空火力非常脆弱未满十八18禁止免费网址。

Therefore, the goal of this thesis is to reveal how a set of textual features in RA method section are used in three different disciplines, including (1) Botany,(2) Structural Engineering,and (3) consumer behavior, to see whether the use of these features indeed are different among these three fields and thus leading to distinctive writing styles of method texts, as well as to see what and how aspects of disciplinary cultures are reflected on the use of these features.

因此美女操逼视频污网站，本論文主要的目的在於探討在植物學(xué)、結(jié)構(gòu)工程国模视频在线、以及消費(fèi)者行為這三種學(xué)科的期刊研究方法之間亚洲,欧洲,乱伦，是否在一系列文本語(yǔ)言形式的使用會(huì)有差異？

Professor Genoves proved it himself some twenty years ago when he crossed the ocean on a primitive reed boat, as one of the crew accompanying anthropologist, Thor Heyerdahl, on the now historic Ra voyages.

無(wú)論歐梅克雕像背后隱藏了什么樣的事實(shí)一区二区在线看日韩视频免费，都已說(shuō)明早期橫渡大西洋在技術(shù)上是可行的国产精品苐一页狼友视频。20年前杰諾夫由人類學(xué)家索爾黑爾陪同，用原始的蘆葦船做了一次歷史性的航行免费精品国自拍视频在线观看。

However,there was no difference in the frequency of genotype and phenotype for the two alleles of C 3b R between RA patients and healthy volunteers.

已經(jīng)發(fā)現(xiàn)中文字幕第一页在线，在紅細(xì)胞內(nèi)含有多種與免疫有關(guān)的物質(zhì)成年福利网，具有識(shí)別和提呈抗原，加速免疫復(fù)合物的清除等生物功能99久久精品国产精油按摩店。

A gear H62 which made in yellow brass with the same mode number m=0.34, 2mm thick and had a center hole, when the gap get C=0.5%t , and punched with compound punching die, and the dimension accuracy reached IT7, the part have a flat surface ,the verticality of tangent plane reached 89.5°, its roughness Ra magnitude are 12.5μm, height of burr are 0.10mm; and the punching part are punched with progressive die, the gap C=7%t , initial accuracy are IT11, and have an more rough surface, even can see the gap with eyes.

例如料厚t=1.5mm的H62黃銅沖裁件日韩手机色情网在线观看，選用C≤40%t單邊Ⅰ類小間隙沖裁比選用C≤8%tⅢ類大間隙沖裁，沖件固定誤差將加大40%～60%99国产网站，精度至少降一級(jí)情侣自拍网。

Van Tinteren H, Hoekstra OS, Smit EF, van den Bergh JH, Schreurs AJ, Stallaert RA, van Velthoven PC, Comans EF, Diepenhorst FW, Verboom P, van Mourik JC, Postmus PE, Boers M, Teule GJ.

但是，仔細(xì)讀后覺(jué)得亚洲另类小说，這篇文章除了給出&無(wú)益開胸&這個(gè)內(nèi)科醫(yī)師和病人特別關(guān)注的新指標(biāo)外另类精品视频，在肺癌的T、N视频二区自拍偷拍、M分期方面并無(wú)新意十八岁禁止入内黄色网站。

A: I am Ra. The greater part of your so-called mutilations take place according to the ways of your second-density beings which feed upon carrion.

A ：我是拉。你稱為肢解事件的94seav，大部分發(fā)生在吃腐敗物的第二密度存有上欧美精品国精品久久99热。

The occurrence of neutralising antibodies in patients with RA following administration of the chimaeric anti-TNF antibody infliximab may be one of the reasons for loss of clinical response or failure of response to therapy.

臨床發(fā)炎的關(guān)節(jié)攝取了藥物。HACA水平在不回應(yīng)患者較高（1641和1008 U / ml）免费看黄片av，但在回應(yīng)患者中較低或無(wú)法探測(cè)西欧免费人人操,人人爽。