1.Clinical study of levonorgestrel-releasing intrauterine system for adenomyosis
Cairong CHEN ; Yan JIN ; Xiuqing ZHOU ; Yibing OUYANG ; Bifang QIN
Journal of Chinese Physician 2011;13(7):923-925,929
Objective To investigate the clinical efficacy of levonorgestrel- releasing intrauterine system (LNG-IUS) in the treatment of adenomyosis and the influence of ovarian function. Methods Eighty patients with adenomyosis were followed up for 0, 1, 3, 6, 12 months after treating with LNG-IUS. The menstrual blood volume, dysmenorrheal, size of uteri, CA125 and EMAb level, hepatic function, serum glucose and serum lipids were observed and evaluated. Serum- levels of FSH and LH were tested before insertion and followed up for 6, 12 months after insertion, respectively. Results After inserting LNG-IUS,dysmenorrhea was obviously alleviated, and it was significantly decreased after 6 months. The menstrual blood volume was (200. 0 ±60)ml, (40. 0 ± 15)ml and (28 ±7)ml in 0, 6, 12 months after the insertion.Serum CA125 and positive rate of EMAb also significantly reduced [CA125: (50. 69 ± 10. 00) IU/L vs (18. 60 ±3.55)IU/L;EMAb:80. 0% vs 3. 8%, P <0. 05]. The volume of uterus reduced without significant changed (P >0. 05). There were little changes in the levels of hepatic function, serum glycosum, serum lipids, FSH and LH at 6 and 12 months after LNG-IUS(P > 0. 05). Conclusions LUG-IUS is an effective and safe therapy for adenomyosis with dysmenorrheal and menorrhagia, and it has no significant effects on ovarian function.
2. Comparison of two training protocols in periodontal surgery teaching for undergraduate students
Kaining LIU ; Ying XIE ; Li GAO ; Yibing ZHAO ; Dong SHI ; Jinsheng ZHONG ; Wenjie HU ; Xiangying OUYANG
Chinese Journal of Stomatology 2019;54(5):335-338
Objective:
To compare the efficacies of two training protocols, i.e. the multimedia instruction and the conventional method, in periodontal surgery teaching for undergraduate students.
Methods:
One hundred and twenty-three dental undergraduates in their pre-clinical training course were recruited and divided into two groups according to the learning grade matching principle: the experimental group (multimedia instruction, 60 students) and the control group (conventional method, 63 students). The teaching aim was to train the students gingivectomy and periodontal flap surgery by using the pig jaws. The conventional teaching method of teacher-demonstrating and student-practicing was used in the control group, and the practice time of the students′ for each surgery was 45 minutes. A standardized teaching video combined with the teachers′ explanations of the key steps was used in the experimental group. The students′ practice time for each surgery was 60 minutes. The efficacy of teaching protocol was evaluated by the teachers according to the scoring criteria set by the teaching group.
Results:
In gingivectomy training, accuracy of fixed points, angle of postoperative gingival margin and morphology of gingiva of the experimental group were better than those of the control group. The experimental group also had more complete and continuous excised gingivae and more thorough adjacent gingival removal. The total scores of the experimental group were significantly higher than those of the control group (92.8±2.6 vs. 89.9±3.7,