ObjectiveThe purpose of this study was to investigate the effect of different chemicalprocessing on titanium to enable titanium-porcelain bonding between a low-fusingporcelain and pure titanium.To provide the theoretical basis and experimental basisfor clinical.Material and methods30 specimen of pure titanium in dimensions of 25mm×3mm×0.5mm were madeand divided into three groups（n=10） which were subjected to surface treatment [...]
Objective:To investigate the effect of Egr-1(Early growth response-1)and TNF-a(Tumour Necrosis Factor-a)on the pathogenesis of lichen planus.Methodsr TUNEL was used to detect the apoptotic cells,andthe immunchistochemical technique was used to test the expression of Egr-1and TNF-a in30LP lesions and30normal skins.Results:Compared to the control,the number of apoptotic cells was significantly incresaed in the ketatinocytes and infiltrating lymphocytes [...]
Objective Recently，researchers tried to change surface characteristics of dental implants as aprosthesis means and were successful in improving the stability on the base of”osseoinergration”. However，the technology has seldom been used in micro implants as aanchorage means in orthodontics，and some micro implants loose or dropped during theorthodontic treatment. In present study the micro implants disposed with [...]
NSCL/P (non-syndromic cleft lip with or without cleft palate, NSCL/P) is acommoncongenital maxillofacial deformity. NSCL/P not only results in themaxillofacial deformities,but also affects patients’hearing, sound, physical andmental health, creating a heavy burdenon family and society, and affecting the qualityof the population. Now NSCL/P is considered acomplex disease,and molecularbiology studies suggest that many genes are related [...]
Objective:To discusses the repairing effect of different impression mothods used for making impression to repair Kennedy I class Dentition defect,Finally,provide a reference for clinical applicaton.Methods:16subjects of mandibular Kennedy I class dentition defect were selected according to the inclusion criteria for researching.The first part:firstly,make three groups of impression using three kinds of impression materials.The alginate impression [...]
Objective: To study on the pathology change in tongue tip of ovariectomized rat,and toexplore the possible biochemical and topographic variations of CK10 ,CK13 which weredetected in 15 normal rats’ tongue mucosa and in 15 ovariectomized rats’ tongue mucosa.Theobjective is to search if there are some relationship between the level of estrogen in the body andthe [...]
ObjectThe study tries to set up a simulation model with simulation pericementum. Onthe simulations model, the resistance to sliding of conventional brackets andself-ligating brackets were tested, to analysis the patient with crowded to choose whattype of brackets with which type of archwires is the best match to the silk. Toevaluation the resistance to sliding on [...]
Objective: Using finite element method analysis of two-tier structure decorated with porcelain occlusal thickness and the thickness of the core porcelain occlusal zirconia all-ceramic crowns internal stress distribution, and provide a theoretical basis for clinical production of all-ceramic crowns, thereby enhancing the use of prosthesislife expectancy.Methods:Maxillary first molar zirconia all-ceramic crowns dimensional finite element model, [...]
Orthodontic is progressing in 21th century.How the tooth can move stablyand efficiently in best times has always been a hotspot.Shorten the course oftreatment,found the most suitable force and the indicator to detect the effect oforthodontic in order to found out the method of improving the speed is veryimportant.Therefore,I will do a research on this field.Objective:In [...]
ObjectiveThe research discusses the relation between Syk and RANKL and alveolar bone remodelingduring orthodontic tooth movement through experimental animal models, TRAP staining andimmunohistochemistry methods of chemical, in order to deeply understand the mechanism oforthodontic tooth movement, and provide a new target of promoting or inhibiting the toothmovement to oral orthodontic work.Methods36 male Wistar rats were [...]
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