1.
In one mouth, the teeth of one side were as test group, other side as control group, the first molar in non-carious pit and fissure of 500 children were sealed.
方法：将500例儿童的第一恒磨牙分为两组，一侧第1恒磨牙为一组，对侧同名牙为第2组。
2.
Characteristics of the Pulp Chamber of Permanent Anterior Teeth and Mandibular First Molars;
恒前牙与下颌第一恒磨牙的髓室特征研究
3.
Clinical Researches of C-shaped Root Canals in Second Mandibular Molars;
下颌第二恒磨牙C形根管的临床探讨
4.
Analysis of Orthodontic Therapy after Extraction of the First Molars;
拔除第一恒磨牙正畸治疗的临床分析
5.
In Vitro study of the anatomy of 36 maxillary second permanent molars of the Uighur people
维吾尔族上颌第二恒磨牙牙体解剖的离体研究
6.
The comparative study of the automatical drift of the third molar after the extraction of the maxillary and mandibular second molar
上下颌第二恒磨牙拔除后第三磨牙自行迁移情况的比较观察
7.
The morphological study about secondary mesiobuccal canal(MB2) of the maxillary second molar in vitro of Shandong region
山东地区上颌第二恒磨牙近中颊根第二根管的离体牙研究
8.
In vitro study of the secondary mesiobuccal canal of the maxillary second molar
上颌第二恒磨牙近中颊根第二根管的离体牙研究
9.
The most significant variable related to third molar impaction is inadequate space for tooth eruption.
大多数阻生的下颌第三磨牙磨牙后间隙 牙冠近远中径比值小于 1。
10.
The Biomechanical Analysis of Mandibular First Molar in Lingual Technique;
下颌第一恒磨牙舌侧矫治的生物力学分析
11.
Anatomy Research of the Mesio-buccal Canal System of Permanent Maxillary First Molars;
上颌第一恒磨牙近颊根根管系统解剖研究
12.
Study of the Root Canal System Anatomy of Permanent Maxillary Second Molars in Shandong Province
山东地区上颌第二恒磨牙根管系统解剖研究
13.
Caries incidence of the first permanent molars of the primary school students in Haidian District,Beijing
北京市海淀区小学生第一恒磨牙龋病调查
14.
The Clinical Effect on Closing Obsolete Lower Molar Spaces with Orthodontic Treatment
正畸关闭下颌第一恒磨牙缺失间隙的疗效观察
15.
THE RELATED-FACTORS OF MALOCCLUSION OF LOWER SECOND PERMANENT MOLARS
下颌第二恒磨牙错畸形的相关因素研究
16.
POSSIBLE FACTORS AFFECTING THE POSITION OF THE FIRST MOLAR IN THE MAXILLA
上颌第一恒磨牙在颌骨中矢状位置的影响因素
17.
Treatment of Vertical Impacted Mandibular First Molar with a Dentigerous Cyst
含牙囊肿致下颌第一恒磨牙垂直阻生的正畸治疗
18.
At the time of birth, the crowns of the primary teeth (baby teeth) are almost complete and the chewing surfaces of the permanent molars are forming.
在出生的时候，第一套牙（乳牙）的牙冠已基本发育完全，恒磨牙的咀嚼面也已形成。