premolar

简明释义

英[priːˈməʊlə]美[priˈmolər]

n. 前磨牙；前臼齿

adj. 前磨牙的；前臼齿的

英英释义

单词用法

同义词

反义词

例句

1.Unfortunately, the fourth premolar in the upper jaw is quite large and looks like the first molar in the lower jaw; it is known as a carnassial tooth.

不幸的是，上颚的第四颗前臼齿很大，看起来就象是下颚的第一颗臼齿，这颗前臼齿也被称作叫裂齿。

2.Objective the aim of this study was to investigate the root canal system of maxillary first premolar .

目的观察离体上颌第一前磨牙根管解剖结构。

3.Last premolar of upper jaw, first molar of lower jaw.

上颚最后的一只前臼齿，下颚最前的一只臼齿。

4.Objective:To compare the changes in third molar position in patients treated with second molar and first premolar extractions.

目的：比较正畸治疗中拔除第二磨牙与拔除第一前磨牙后第三磨牙牙胚位置的不同改变。

5.Conclusion: The defect treatmen of glass fiber post in a single premolar tooth root canal can achieve satisfactory results.

近年来，作者采用玻璃纤维桩进行前磨牙牙体缺损的修复，取得了良好的临床效果。

6.Objective to evaluate the effect of autotransplantation of impacted anterior tooth and premolar.

目的评价自体牙移植的临床效果。

7.Three-dimensional finite element analysis of the stress of the mandible premolar under loading on its traumatic occlusal spots.

下颌前磨牙创伤咬合点加载的三维有限元应力分析。

8.Objective: to provide morphological basis for dental aging and senile teeth diseases and to study age-related changes of pulp-dentin complex of human premolar.

目的：研究人前磨牙牙髓牙本质复合体的增龄性变化，探讨牙衰老和老年牙病的形态学基础。

9.During the check-up, the hygienist noticed a cavity in one of my premolars 前磨牙.

在检查中，卫生员发现我一颗前磨牙 premolar有蛀牙。

10.My orthodontist recommended extracting a premolar 前磨牙 to make space for my braces.

我的正畸医生建议拔掉一颗前磨牙 premolar以为我的牙套腾出空间。

11.The premolars 前磨牙 help in tearing and crushing food.

前磨牙 premolars 有助于撕裂和压碎食物。

12.The dentist explained that the premolar 前磨牙 is essential for grinding food.

牙医解释说，前磨牙 premolar 对于磨碎食物是至关重要的。

13.Children usually lose their premolars 前磨牙 around the age of 10.

孩子们通常在10岁左右会掉落他们的前磨牙 premolar。

作文

The human mouth is a complex structure that plays a crucial role in our daily lives, from eating to speaking. Among the various types of teeth that we possess, the premolars are often overlooked, yet they serve an essential function. In this essay, I will explore the anatomy and importance of premolars in dental health and overall well-being.Firstly, let’s define what premolars are. They are the transitional teeth located between the canine teeth and the molars. Typically, adults have eight premolars, with four on the top and four on the bottom. These teeth are characterized by their flat surfaces and ridges, which are designed for grinding and crushing food. This grinding action is vital for breaking down food into smaller particles, making it easier for our bodies to digest.In addition to their mechanical functions, premolars also play a significant role in maintaining the structure of the jaw. They help to support the alignment of other teeth and contribute to the overall balance of the bite. When premolars are missing or damaged, it can lead to a variety of dental issues, such as misalignment and uneven wear on other teeth. This can result in discomfort, difficulty in chewing, and even long-term damage to the jaw joint.Moreover, premolars are crucial for proper oral hygiene. Since they are located towards the back of the mouth, they can be more challenging to clean thoroughly. This makes them susceptible to cavities and decay if not cared for properly. Regular dental check-ups and good oral hygiene practices, such as brushing and flossing, are essential to keep premolars healthy. Neglecting these teeth can lead to serious complications, including infections that may require more invasive treatments.Another important aspect to consider is the role of premolars in aesthetics. Although they are not as prominent as incisors or canines, premolars contribute to the overall appearance of a smile. Well-aligned and healthy premolars can enhance facial symmetry and contribute to a confident smile. Conversely, missing or damaged premolars can lead to aesthetic concerns that may affect an individual’s self-esteem.In conclusion, premolars are vital components of our dental structure, serving multiple functions that are essential for both health and aesthetics. They are not only responsible for grinding food but also play a critical role in maintaining oral health and jaw alignment. As such, it is important to recognize the significance of premolars and ensure that they receive the attention and care they deserve. By prioritizing dental hygiene and regular check-ups, we can preserve the health of our premolars and, by extension, our overall well-being.

人类的口腔是一个复杂的结构，在我们的日常生活中发挥着至关重要的作用，从进食到说话。在我们拥有的各种类型的牙齿中，前磨牙往往被忽视，但它们却具有重要的功能。在这篇文章中，我将探讨前磨牙的解剖结构及其在牙齿健康和整体幸福感中的重要性。首先，让我们定义一下前磨牙是什么。它们是位于犬齿和磨牙之间的过渡牙齿。通常，成年人有八颗前磨牙，上面四颗，下面四颗。这些牙齿的特点是平坦的表面和脊状结构，旨在研磨和压碎食物。这种研磨动作对于将食物分解成更小的颗粒至关重要，使我们的身体更容易消化。除了机械功能外，前磨牙在维持下颌结构方面也起着重要作用。它们有助于支持其他牙齿的对齐，并有助于咬合的整体平衡。当前磨牙缺失或受损时，可能会导致多种牙科问题，如错位和其他牙齿的不均匀磨损。这可能导致不适、咀嚼困难，甚至对下颌关节的长期损害。此外，前磨牙对于保持良好的口腔卫生至关重要。由于它们位于口腔后部，因此可能更难彻底清洁。这使得它们在未得到适当护理的情况下容易发生龋齿和腐烂。定期的牙科检查和良好的口腔卫生习惯，如刷牙和使用牙线，对于保持前磨牙的健康至关重要。忽视这些牙齿可能导致严重的并发症，包括可能需要更具侵入性的治疗的感染。另一个重要的方面是前磨牙在美学中的作用。尽管它们不像切牙或犬齿那样显眼，但前磨牙对微笑的整体外观有贡献。排列良好且健康的前磨牙可以增强面部对称性，提升自信的微笑。相反，缺失或受损的前磨牙可能会导致美学问题，从而影响个人的自尊心。总之，前磨牙是我们牙齿结构的重要组成部分，承担着对健康和美学至关重要的多重功能。它们不仅负责研磨食物，还在维护口腔健康和下颌对齐方面发挥着关键作用。因此，认识到前磨牙的重要性并确保它们得到应有的关注和护理是非常重要的。通过优先考虑牙齿卫生和定期检查，我们可以保护前磨牙的健康，从而延续我们的整体幸福感。