3.Developmental abnormality of the teeth in children: IV: the early clinical treatment principle for the impacted maxillary young permanent incisors with dilaceration.
Chinese Journal of Stomatology 2012;47(11):698-700
Child
;
Humans
;
Incisor
;
abnormalities
;
Maxilla
;
Occlusal Adjustment
;
Orthodontic Extrusion
;
Tooth Abnormalities
;
diagnosis
;
etiology
;
therapy
;
Tooth, Impacted
;
diagnosis
;
etiology
;
therapy
4.Issues to address in developing evidence based clinical practice guidelines: experience from evidence-based recommendations for the diagnosis and treatment of cow's milk protein allergy in infants.
Chinese Journal of Pediatrics 2013;51(3):165-167
Animals
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Evidence-Based Medicine
;
Health Knowledge, Attitudes, Practice
;
Humans
;
Infant
;
Meta-Analysis as Topic
;
Milk Hypersensitivity
;
diagnosis
;
prevention & control
;
Milk Proteins
;
adverse effects
;
Practice Guidelines as Topic
;
standards
;
Professional Staff Committees
;
organization & administration
5.Research advances on tissue-engineered corneal endothelial cells transplantation
International Eye Science 2015;(2):219-222
Due to the serious shortage of donor cornea materials and the donor limit, clinical popularization of penetrating keratoplasty is severely restricted. lt is a hot spot of current research that applying tissue engineering in vitro to culture corneal endothelial cells ( CEC ) with high density, regular hexagonal shape and healthy endothelial function. ln this article, we reviewed the latest progress in the study of source of CEC seeder cells, selection of cultivating carries, type of CEC transplantation and immune mechanism that summarized the current research problems and made a prospect to the future.
7.A analysis on the effect of PRVC mode of ventilator for mechanical ventilation efficiency
Xiaochen SI ; Yan WANG ; Lan QIN
China Medical Equipment 2017;14(5):34-37
Objective:To analyze the advantages of the pressure-regulated volume control (PRVC) mode compared with the traditional continuous mandatory ventilation (CMV) mode about mechanical ventilation efficiency of ventilator.Methods: For the mechanical ventilation situations, the parameters of PRVC mode, V-CMV mode and P-CMV mode under same detecting conditions were tested by using gas analyzer, which based on the ventilation principle of PRVC mode. And then the differences between PRVC mode and CMV modes were analyzed. Results: PRVC mode can supply the almost same tidal volume, and provide lower pressure and higher compliance compare with the V–CMV mode under the same conditions. On the other hand, PRVC mode can supply more tidal volume and slightly higher compliance compare with the P–CMV mode under the same pressure.Conclusion: PRVC mode has combined with the advantages of CMV mode, and it can make sure the target tidal volume, at the same time, reduce the pressure of airway, and improve the compliance for circuit. It also can make the mechanical ventilation to got more efficiency and more safety.
8.The significance of DNA content in oral squamous cell carcinoma
Xiaohui SI ; Yan JIN ; Lianjia YANG
Journal of Practical Stomatology 2000;0(05):-
Objective: To study the significance of DNA content in oral squamous cell carcinoma (SCC).Methods: DNA content and cell cycle of the cells in 18 cases of oral SCC were analized by image cytometry (ICM). Results: The DNA index (DI) and proliferation index (PI) were remarkably heigher in SCC than in normal epithelium ( P
9.Comparison of Dean's index and tooth surface index of fluorosis
Yan SI ; Boxue ZHANG ; Hongying WANG
Journal of Practical Stomatology 1995;0(04):-
Objective:To compare the characteristics of Dean's index(DI) and tooth surface index of fluorosis(TSIF). Methods:416 inhabitants of 12, 15 and 35~44 years old were sampled randomly to receive epidemiological survey assessed by DI in fluorosis endemic areas of Xingtai City, Hebei Province. Then TSIF was used to investigate the 178 samples selected randomly from the 416 subjects. Two examiners(S/C) were trained by an experienced specialist of epidemiology(W) before investigation. SPSS 10.0 software and Excel database were used to analyze the data.Results:Weighted Kappa of theoretic calibration of DI and TSIF was ranging from 0.86 to 0.96. The results of TSIF were lower than DI in clinical calibration test. With the increase of the number of tooth surfaces concerned, strength of agreement declined, ranging from “very good” to “moderate”. Prevalence of fluorosis according to DI was lower than that accoding to TSIF.In 35-44 years old people difference of fluorosis prevalence calculating between DI and TSIF was almost 40%. The most probably reason for this phenomenon was that a person with “questionable” fluorosis wouldn't be calculated as a fluorosis patient. The proportion of “questionable” in 35-44 age group was the highest (40.3%). Conclusion:DI is suitable for large-scale epidemiology survey, and should be combined with community fluorosis index (CFI), while TSIF is suitable for esthetic study, especially for severe fluorosis patients.
10.Variation of plaque pH values after chewing xylitol gum
Yan SI ; Weijian WANG ; Wenhui WANG
Journal of Practical Stomatology 1995;0(04):-
0.05). When comparing the pH value of xylitol gum with the pH value of 0.1 kg/L sucrose solution, and comparing that with the sucrose gum, significant difference could be found between the changes of pH values at different time points (P