查询词典 molars

Some clinically obvious phenomena are difficult to explain using this model system, for example, the phenomenon traditionally referred to as the "row-boat effect", where uprighting of the canines excessively tipped into an extraction site results in protraction of the molars and "anchorage loss".

一些临床上明显的现象是难以解释利用该模型系统，例如，传统的现象称为"行船效应"，在扶正的犬齿过分倒进萃取结果冗长的网站的臼齿和"锚固损失"。

Results: There were 2 cases found distal third root canals among 172 cases of the lower first molars.

结果：172例下颌第一磨牙中发现远中第三根管2例。

Objective We provided the reference for diagnoses in Othodontics of total dental space analysis. Method This study randomly collected 140 Chinese students(60 male, 80 female) who were from eithteen to twenty five years old with third molars completely erupted.

正畸诊断和治疗应考虑全牙齿及其周围环境的影响，解除牙列中各个区域的牙量骨量不调，但目前国内正畸医师在错畸形的诊断、治疗中，比较注重牙弓前、中段的牙量骨量分析，却忽略了牙弓后段的分析[1] 。

Result:After removal of the bilateral lower molars, the remodeling and degenerative activities in different layers of the condyles increased, such as vesiculation of endoplasmic reticulum, distortion of mitochondria and increase of lysosome. Furthermore, the sequential arrangement of collagen fibrils was disturbed, the collagen network broke down and the proteoglycan granules decreased.

结果：细胞发生了不同程度的改建及退行性反应，如粗面内质网的扩张，线粒体肿胀，溶酶体增多等；基质中胶原原纤维的有序排列结构消失，胶原网受到破坏，同时蛋白多糖颗粒减少；基质中脂质小体及基质小囊等成分增多；负重区较非负重区的改变更显著。

Usually, the whitest teeth are the two front teeth while molars are generally two shades darker.

通常，雪白的牙齿是两个战线同时臼齿齿通常有两种色系黑暗。

Gum disease can affect the first and second molars and the bone surrounding the tooth, as well as the impacted wisdom tooth.

牙龈疾病可能会影响第一和第二大臼齿和骨周围的牙齿，以及作为影响智齿冠。

Using stereomicroscope, we observed the fracture line direction and location as well as the angle between the fracture line and the attrite plane. The data was compiled into statistics and analyzed. The results revealed that most of the vertical root fractures occurred in teeth with severe attrite crown and flat root. Numerous bucco-lingual oriented fractures occurred in the mesial root of molars, and we found three non-endodontically treated cases with mesio-distal oriented fractures in the palatal roots.

结果发现，两组的垂直牙根断裂均好发於牙冠严重磨耗（77.4-88.2%）且扁平的牙根（61.8-75.8%）上，以大臼齿的近心牙根发生率最高（64-85.7%），多为颊舌侧走向（91.2-91.9%），且於未根管治疗组别亦发现三例腭侧根断裂，走向为较宽的近远心方向，显示牙根断裂会沿著牙根较宽的方向发生；同时，未经根管治疗而产生垂直牙根断裂的牙齿具有根叉位置较低的现象（61.8%），牙根於比例上有较短小的特徵。

This article is a report of sever maxillary protrusion or bimaxillary protrusion cases. They had four first premolar extraction, but the outcomes were not so satisfied. So four first molars were extracted later, and this contributed to a good profile.

此篇文章的主要目的即以骨骼性或齿槽性之严重上颚或上下颚前突病例，在拔除第一小臼齿矫正处置后，因必要再拔除大臼齿继续处置，最后得一良好侧貌的报告。

Objective To study the changes in maxilla,mandible and SN after orthodontic treatment with four pre－molars extracted in bimaxillary protrusion in adolescents and provide clinical useful data for predicting curative ef－fect after orthodontic treatment.

目的：研究青少年双颌前突患者拔牙矫治前后上颌骨、下颌骨及前颅底的变化，为临床预测矫治后疗效提供临床依据。

Majority of the four root canals of first maxillary molars showed curvatures at varing degrees in mesiodistal and buccolingual directions, and the second curvatures of them were different too.

上颌第一恒磨牙四个根管在近远中方向、颊舌方向均有不同程度的弯曲，其第二弯曲出现的情况也各不相同。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。