1.
People have been troubled by tooth and gum problems for thousands of years.
人类受牙齿和牙疾病的困扰已经有几千年了。
2.
The branch of dentistry that deals with the study and treatment of periodontal disease.
牙周病学牙科的分支，主要研究牙周疾病的治疗
3.
There are many reasons for diseases of the teeth and gums.
产生牙齿和牙周疾病的原因很多。
4.
a dentist specializing in diseases of the dental pulp and nerve.
专攻牙髓神经疾病的牙医。
5.
the branch of dentistry dealing with diseases of the dental pulp.
牙科中有关牙髓疾病的分支。
6.
The branch of dentistry that deals with diseases of the tooth root, dental pulp, and surrounding tissue.
牙髓病学研究牙根、牙髓及其周围组织疾病的牙医学的一个分支
7.
Periodontal disease is a chronic bacterial condition associated with receding gums and tooth loss.
牙周病是一种慢性细菌感染性疾病，会引起牙床萎缩和牙齿脱落。
8.
Anther serious disease affects the gums, the tissue that surrounds the teeth.
另外一种疾病严重影响牙齿周围的牙龈，
9.
the branch of dentistry dealing with diseases of the gums and other structures around the teeth.
牙科中有关齿龈与牙齿四周结构的疾病的分支。
10.
The book provided information about dental problems for other dentists to use.
这本书为其他牙医提供了有关牙科疾病的信息，
11.
Research finds genetic link to some types of gum disease
研究发现遗传与某些牙龈疾病有关
12.
Research finds genetic link to some types of gum disease.
研究发现遗传与某些牙龈疾病有关。
13.
Investigation of systemic diseases of older patients in a periodontal clinic;
牙周科老年患者系统性疾病情况调查
14.
Effect of dentin sialoprotein on the tooth development and dental disease
牙本质涎蛋白在牙齿发育、牙本质疾病中的表达和作用
15.
Nested case-control study on the relationship between premature delivery and periodontal diseases
早产与牙周疾病关系的巢式病例对照研究
16.
Decay is not the only disease that can cause tooth loss.
龋齿不是惟一一种造成牙齿损失的疾病，
17.
Primary study of the relationship between periodontitis and COPD
牙周炎与慢性阻塞性肺疾病关系的初步研究
18.
Research progress on the influence of periodontal treatment to system diseases
牙周治疗对系统性疾病影响的研究进展