首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   704篇
  免费   44篇
  国内免费   4篇
耳鼻咽喉   1篇
儿科学   41篇
妇产科学   12篇
基础医学   90篇
口腔科学   28篇
临床医学   55篇
内科学   125篇
皮肤病学   16篇
神经病学   11篇
特种医学   145篇
外国民族医学   1篇
外科学   40篇
综合类   50篇
预防医学   37篇
眼科学   5篇
药学   56篇
中国医学   4篇
肿瘤学   35篇
  2021年   8篇
  2020年   6篇
  2019年   6篇
  2018年   13篇
  2017年   11篇
  2016年   16篇
  2015年   12篇
  2014年   18篇
  2013年   32篇
  2012年   26篇
  2011年   21篇
  2010年   43篇
  2009年   45篇
  2008年   24篇
  2007年   23篇
  2006年   13篇
  2005年   9篇
  2004年   9篇
  2003年   9篇
  2002年   7篇
  2001年   8篇
  2000年   9篇
  1999年   10篇
  1998年   34篇
  1997年   33篇
  1996年   34篇
  1995年   35篇
  1994年   24篇
  1993年   21篇
  1992年   7篇
  1991年   7篇
  1990年   8篇
  1989年   16篇
  1988年   15篇
  1987年   12篇
  1986年   15篇
  1985年   11篇
  1984年   13篇
  1983年   14篇
  1982年   12篇
  1981年   13篇
  1980年   15篇
  1979年   4篇
  1978年   8篇
  1977年   2篇
  1976年   8篇
  1975年   5篇
  1955年   1篇
  1950年   1篇
  1949年   1篇
排序方式: 共有752条查询结果,搜索用时 0 毫秒
751.

Background

Perception of midline diastema differs among individuals and cultures. To some, it is a feature of beauty, while to others it is aesthetically appalling. From a scientific point of view, midline diastema is a deviation from normal adult dentition. It is not uncommon among some African natives to find individuals demanding for artificially created midline diastema from dental practitioners.

Objective

To present a rare case of pulpal necrosis involving maxillary and mandibular central incisors as a result of poorly executed teeth modification in a bid to create upper and lower midline diastemata.

Result

A 23-year old lady presented with history of spontaneous, sharp, persistent pain associated with palatal swelling and discharging sinus of two weeks duration in relation to maxillary central incisors (11, 21). The complaint was preceded by a history of recurrent pain in relation to 11, 21, 31 and 41 which started soon after obtaining artificially created maxillary and mandibular midline diastemata from a dental quack. Periapical x-ray revealed periapical radiolucency in relation to 21 and 41. Vitality test confirmed necrotic pulp in the lower central incisors. The affected teeth were scheduled for root canal therapy (RCT) and porcelain fused to metal crown. The RCT of 11 and 21 had been completed but further treatment stalled due to financial constraint.

Conclusion

This is a case of obsession for midline diastema, poor dental health education, and illegal dental practice.  相似文献   
752.
BACKGROUND: The study aimed to determine whether allergic conditions accompany analgesic intolerance. METHODS: A total of 132 analgesic-intolerant patients with bronchial asthma admitted to the adult allergy unit from January 1991 to October 1997 and 103 patients with bronchial asthma randomly selected from among the asthmatics referred to our department between January and October 1997 were enrolled in the study. Those having analgesic intolerance and bronchial asthma were accepted as group I; patients having only asthma were accepted as group II. A standard questionnaire was completed for all the patients. Physical examination, routine skin prick tests, determination of total IgE levels and blood type, and oral analgesic provocation tests were also performed. RESULTS: The results showed that some allergic conditions were significantly more common in group I (22.7% and 7.8% for food allergy/intolerance [P<0.05], 16.7% and 7.8% for antibiotic allergy, 16.7% and 2.9% for dermographism, 9.8% and 1.0% for metal allergy, and 9.1% and 1.0% for chronic urticaria for groups I and II, respectively [P<0.001]). In addition, the mean of the total IgE level in the serum was higher in group I than group II (77.6 and 53.7 IU/ml; P<0.05), and the cumulative analgesic consumption was more in group I (14.2+/-17.1 and 9.1+/-12.5 boxes; P<0.05). CONCLUSIONS: Dermographism; chronic urticaria; antibiotic, metal, and food allergy; high levels of total IgE; and a high amount of cumulative analgesic consumption may be the conditions accompanying analgesic intolerance in asthmatics.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号