查询词典 root canal

Objective:To investigate the effect of diameter of root canal foramen on the accuracy of two apex locators.

目的：研究根尖孔直径对两种根管长度电测仪Root ZX和Neosono Ultima EZ测量准确性的影响。

Result These difficult root canals caused by broken instruments, luting cement and resinifying agent in canals, root canal calcification and root canal perforation were managed with the success rate of 82.35%, 82.14％, 76.32％and 100.00％ respectively;the incidence of root canal perforation in severe curved root canals was 35.14％during the course of the treatment.

结果 应用根管显微镜超声联合技术处理折断器械、根管内原充填物、根管钙化、根管侧穿的成功率分别为82.35%、82.14％、76.32％、100％；重度弯曲根管侧穿的发生率为35.14％。

The existence of the distal third root canal in the lower first molar, which increased by the emergence of root canal missed chances in the clinical treatment, so it is very important to double-check the number of root canals when operating root canal treatment.

下颌第一磨牙远中第三根管的出现增加了临床治疗中遗漏根管的机率，因而根管治疗时对根管数目的仔细检查非常重要。

Motheds: to select 336 lomars with pulposis or apicitis from the aged and to devide them into two groups. in group the control group,the illed teeth were given only the root canal therapy. in group the experimental group, according to the difference of every root canal, the unobstructed root canals were treated by root canal therapy. while the obstructed ones were given the root canal resinifying, use two kinds of therapy method together to molais' pathological changes.then their curative effects were observed after two year.

选取336例中老年人患有不可复性牙髓炎、牙髓坏死、牙髓钙化、牙内吸收和急、慢性根尖周炎的患牙358颗，随机分为对照组和实验组，对对照组行常规根管治疗，对实验组则根据每个牙齿各根管的不同情况，采用根管-塑化联合治疗，观察2年进行临床评价。

At the root canal therapy process, hidden in the root canal isthmus, bifurcation area, triangle, shape and irregular dentinal tubules within the Enterococcus faecalis prepared by mechanical means it is difficult to remove, it can be biofilm, proton pump tolerance mechanisms such as root canals harsh ecological environment, to avoid conventional drugs, the role of disinfection, resulting in the failure of root canal therapy.

在根管治疗过程中，隐藏在根管峡部、分叉区、三角区、形态不规则区及牙本质小管内的粪肠球菌难以用机械预备的方法去除，它可通过生物膜、质子泵等机制耐受根管内苛刻的生态环境，躲避常规消毒药物的作用，从而导致根管治疗的失败。

A group: to measure the length of root canal by Root ZX, prepare the root canal and test the trial point for a best position of the major Gutta Percha Point in root canal obturation with lateral compaction, then take X-ray photos.

随机选择需行根管治疗术的单根管恒前牙、双尖牙 2 30颗，分为A、B两组，A组采用RootZX 根管测量仪测量根管长度，根管预备后，根管充填时加试尖步骤，调试出最适主尖后侧压充填根管，摄牙片

Root canal therapy is the most fundamental and efficient way to cure endodontics and periapical diseases.

根管治疗术(root canal therapy， RCT)是治疗牙髓病和根尖周病的最基本和最有效的方法。

RCT can be divided into 3 steps, including root canal preparation, root canal disinfection, and root canal obstruction, of which the canal obstruction is very important, for the treatment efficiency will be greatly affected with uncondensed or mislocated obstruction.

根管充填的作用很重要，如果根充不密合、根充不到位等，均会影响根管治疗的成功率。

Key words］root canal apex locator; periapical diseases; dental pulp cavity; working length; aged

1.2 方法常规开髓揭顶，清理根管，将root zx根管测量仪电极置于被测牙的对侧口角处，探测端接10号k型锉，缓慢进入根管，当测量仪显示到达根尖孔时，用制动片记录其长度，直接摄x线片证实k型锉所到达的位置，确定根管测量仪的准确性。

The method locates with Raypex5 root needle appearance has a tooth to 205 in all 403 roots canal undertakes length of root canal job is measured, after undertaking with this length the root is in charge of provision to fill up, film X line piece the quality that observes root canal fills up.

方法用Raypex5根尖定位仪对205颗患牙共403个根管进行根管工作长度测量，以此长度进行根管预备充填后拍摄X线片观察根管充填的质量。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。