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20 May 2008, Volume 35 Issue 3 Previous Issue    Next Issue

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Expr ession of matr ix metalloproteinase- 7 and c- myc in human or al squamous ce REN Xiang, ZHU En - xin, XIAO Jing, LIU Ting- jiao, QU Hong, SU Ying- ying Inter J Stomatol. 2008, 35 (3):  229-229～232，353.  Abstract ( 1851 )   HTML ( 4 )   PDF（pc） (293KB) ( 1502 )   Save Objective To investigate the expression and significance of matrix metalloproteinase- 7（MMP- 7） and c- myc protein in oral squamous cell carcinoma（OSCC）. Methods Immunohistochemical EliVisionTM method was used to detect the expression of MMP- 7 and c- myc in 54 cases which contain 49 oral squamous cell carcinoma and 5 normal oral mucosa. Results 1）The positive expression rates of MMP- 7 and c- myc in oral squamous cell carcinoma were respectively 83.7% and 77.6%. 2）The expression of MMP - 7 was closely correlated with TNM stage, clinical grade, and lymph nodes metastasis of OSCC（P<0.05）. 3）There were significant differences of the c- myc expression in different pathologic grade as well as there were whether lymph node metastasis or not（P <0.05）. 4）The expression of MMP - 7 and c - myc in oral squamous cell carcinoma were positively correlated（P <0.05）. Conclusion Both MMP- 7 and c - myc express highly in oral squamous cell carcinoma, and have a synergistic effect on the occurrence and the development of oral squamous cell carcinoma. Related Articles | Metrics

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Effect of overdose fluor ide on the expr ession of amelogenin in r at mandibular GAO Chun - na, WANG Qiang, WU Hong- mei Inter J Stomatol. 2008, 35 (3):  233-233～235.  Abstract ( 1597 )   HTML ( 5 )   PDF（pc） (28KB) ( 745 )   Save Objective To observe the effect of overdose fluoride on the expression of amelogenin in rat mandibular incisor and to explore the probable mechanism of dental fluorosis. Methods Six Wistar rats were divided randomly into two groups. Animals were maintained in standard environmental conditions with free access to food and water（control group） or water added with 100 mg/L F（- experimental group）. The rats were killed at the end of eighth week. Using realtime polymerase chain reaction（PCR） to observe the effect of overdose fluoride on the expression of amelogenin in rat mandibular incisor. Results The expressions of amelogenin in rat mandibular incisor were obviously inhibited in experimental group（P<0.05）. Conclusion The overdose fluoride inhibits the secretion of amelogenin and leads to the abnormal development of enamel matrix. Related Articles | Metrics

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Study on the method that digital projection of cor r ectituding abnormality measu WANG Chao- jian, NIU Lei, LU Jun Inter J Stomatol. 2008, 35 (3):  236-236～239.  Abstract ( 1817 )   HTML ( 8 )   PDF（pc） (37KB) ( 1261 )   Save Objective To verify the digital projection of the reliability of image superposition. Methods To compare 10 cases′image superposition via the application of image- disposed software. Results There was no significance between SN superposition and digital projection method. Conclusion The superposed image reveals the statistical significance and the correctituding abnormality effectiveness. Related Articles | Metrics

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Clinical application of glass fiber post in the r estor ations multirooted teeth LI Bing1, GE Xue- jun2, LUO Xiao- jin1, WU Feng1, ZHANG Bing- sheng1 Inter J Stomatol. 2008, 35 (3):  240-240～241.  Abstract ( 1716 )   HTML ( 7 )   Save Objective To study the clinical effects of glass fiber posts on restored in the residual roots and crowns in multirooted molars. Methods 44 multirooted residual teeth of 35 patients were endodontically treated and restored by glass fiber core and crowns followed up for 6 months- 2 years. Results 42 cases were satisfactory，only 2 cases appeared loose and gingivitis. The storation ratio reached 95.45%. Conclusion The restorations of glass fiber posts used in multirooted molars had more better effects. Related Articles | Metrics

综述

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Role of vascular endothelial growth factor in r econstructive surgery after surgi MA Peng, LIU Chun-li Inter J Stomatol. 2008, 35 (3):  242-242～245.  Abstract ( 1240 )   HTML ( 4 )   PDF（pc） (38KB) ( 1077 )   Save As a key mediator of normal physiological angiogenesis, vascular endothelial growth factor（VEGF）has been regarded as an emancipator to plastic surgeon, and yet a misfortune to oncology surgeon, due to its singular biological effect. Therefore in some clinical cases, especially for some malignant tumor patients having endured radical surgery and being craving for a reconstructive surgery, VEGF plays a role full of paradoxes. To make a clinical balance, we should find a point to inhibit tumor cell from utilizing VEGF and make a permission to normal tissues to employ it. Related Articles | Metrics

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Development of crystallogr aphic study on biominer alization of dental enamel CHENG Lei, ZHOU Xue- dong Inter J Stomatol. 2008, 35 (3):  246-246～248.  Abstract ( 1423 )   HTML ( 7 )   PDF（pc） (27KB) ( 714 )   Save Dental enamel is composed of hydroxyapatite crystals which arrange regularly. Demineralization of enamel could alternate the hydroxyapatite crystals in their morphology, structures and chemical composites. The developments of crystallographic study would be helpful to the studies of dental caries and dental materials. The review represents in recent years on the crystallographic study of dental enamel. Related Articles | Metrics

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Dextr anase of or al streptococci: Molecular structur e and function JIANG Dan1, QIU Yuan- xin1, HU Tao2, ZHOU Xue- dong1 Inter J Stomatol. 2008, 35 (3):  249-249～251.  Abstract ( 1852 )   HTML ( 6 )   PDF（pc） (28KB) ( 1421 )   Save Dextranase is a kind of glucanase which degrades α- 1,6 glucans and thus hydrolyzes water- soluble polysaccharides. Many kinds of bacteria including oral streptococci could synthesize dextranase. The dextranase synthesized by oral streptococci take part in the modification of exopolysaccharides and the adhesion of bacteria. The article reviewed the molecular structure and function of dextranase synthesized by oral streptococci in recent years. Related Articles | Metrics

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Recent advances in etiologic factor s of sialoliths formation SU Yu- xiong, LIAO Gui - qing Inter J Stomatol. 2008, 35 (3):  252-252～254.  Abstract ( 1275 )   HTML ( 4 )   PDF（pc） (27KB) ( 1048 )   Save The exact cause of sialoliths formation is still unknown. In recent researches, the concentration of organic and inorganic ion in saliva, bacterium infection and inflammation, the duct anatomy and the general factors are considered to be the etiologic factors. There are several hypotheses of sialoliths formation, including mineral nucleus hypothesis, retrograde theory, microlith theory and degenerative organelle hypothesis. This article reviews the recent advances in the etiologic factors of sialoliths formation. Related Articles | Metrics

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Development of studies on proteome of Streptococcus mutans TIAN Xiao- bei1, HE Yong- hong1, WAN Hu-chun2 Inter J Stomatol. 2008, 35 (3):  255-255～258.  Abstract ( 1452 )   HTML ( 4 )   PDF（pc） (39KB) ( 1495 )   Save Streptococcus mutans（S. mutans） is one of important pathogenic bacterium in dental caries. Based on the studies of morphology, biochemistry and genome, the study on proteome of S. mutans became an new hotpot. The proteome of S. mutans varies on the basis of habitat, growth model and strains. The paper review the recent studies on proteome of S. mutans. Related Articles | Metrics

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Clinical evaluation of poster ior composite r estor ations LIU Zhen- hua1, CHANG Xiao- li1, ZHAO Xiao- yi2 Inter J Stomatol. 2008, 35 (3):  259-259～260，264.  Abstract ( 1591 )   HTML ( 7 )   PDF（pc） (28KB) ( 1285 )   Save The early clinical experiences with posterior composite restorations indicated there were many clinical challenges, for example secondary caries, restoration fracture, post- operative sensitivity, marginal staining, and bulk discoloration. This paper reviews what is known regarding current clinical challenges with posterior composite restorations, and attempts to get some clinical datas for improving the clinical outcomes of this restoration. Related Articles | Metrics

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Proper ties of polyacid - modified composite r esins and its applications in dent LIN Yao, DU Min - quan Inter J Stomatol. 2008, 35 (3):  261-261～264.  Abstract ( 1536 )   HTML ( 8 )   PDF（pc） (38KB) ( 1574 )   Save Among the tooth- coloured restorative materials now available to the dental profession, the latest are the polyacid- modified composite resins（compomers）, which contain no water and cure photochemically. Studies on the composition characteristics, water uptake influencing the mechanical properties and fluoride release were reviewed, and also its clinical applications were described on this paper. Related Articles | Metrics

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Clinical application of nitrous oxide/oxygen inhalation sedation in pediatr ic de XIAO Xiao - fen, ZHAO Wei Inter J Stomatol. 2008, 35 (3):  265-265～267，270.  Abstract ( 1630 )   HTML ( 8 )   PDF（pc） (37KB) ( 1884 )   Save Nitrous oxide/oxygen inhalation sedation, with the features of anxiolysis, analgesia, amnesia, as well as rapid onset and recovery, remains the preferred technique for the management of anxious pediatric dental patients. The review is on the clinical application of nitrous oxide/oxygen inhalation sedation in pediatric dentistry. Related Articles | Metrics

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The application of the piezosurgery device in or al field DU Fang, SUN Qin- feng Inter J Stomatol. 2008, 35 (3):  268-268～270.  Abstract ( 1748 )   HTML ( 7 )   PDF（pc） (28KB) ( 2020 )   Save The piezosurgery device is a new innovating surgical equipment that used piezoelectric ultrasonic vibrations to perform precise and safe osteotomies. This device works only on mineralized tissues and causes no thermally harm to tissues. Now, it has been widely used in oral bone surgery. The review mainly focuses on the principle, technique characteristics and the application of the piezosurgery divice in oral field. Related Articles | Metrics

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Resear ch advancement of chondrocyte apoptosis in osteoar throsis JIAO Kai, NIU Li- na, WANG Mei- qing Inter J Stomatol. 2008, 35 (3):  271-271～273,282.  Abstract ( 1573 )   HTML ( 3 )   PDF（pc） (38KB) ( 780 )   Save Osteoarthrosis（OA） is harmful to health and daily life, but its features varied among different joints. The etiopathogenisis and pathomechanism of OA is still unclear. In recent there have been many reports on the chondrocyte apoptosis of osteoarthrosis in different joints. In the present review the recent study on the features of chondrocyte apoptosis, the associated signal transduction pathway and influential factor in OA are provided. Related Articles | Metrics

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Colonization and detection of Tannerella forsythensis in the infected root canals ZHANG Jing- lan, LING Jun- qi Inter J Stomatol. 2008, 35 (3):  274-274～276.  Abstract ( 1590 )   HTML ( 5 )   PDF（pc） (29KB) ( 1485 )   Save Tannerella forsythensis is the significant pathogen of periodontal disease. It can colonize in the infected root canal, and is close correlated with rapidly progressive and refractory periodontitis, too. Studies are carried out correlated with the colonization, the detection and the treatment of Tannerella forsythensis in the infected root canal. Below is review about the research progress. Related Articles | Metrics

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Resear ch progr ess on r elationship between monocyte chemoattr actant protein- 1 GONG Qi- mei, LING Jun- qi Inter J Stomatol. 2008, 35 (3):  277-277～279，288.  Abstract ( 1459 )   HTML ( 3 )   PDF（pc） (38KB) ( 634 )   Save Monocyte chemoattractant protein- 1（MCP- 1）, a member of the chemokine CC subfamily, could induce the chemotaxis and activation of monocytes and macrophagocytes, and then play an important role in the regulation of physiological, pathological and immunologic response processes. This review is to clarify the structure of MCP- 1 and the relationship between MCP- 1 and common oral diseases, such as pulpitis, periapical disease, periodontitis and oral squamous cell cancer. Related Articles | Metrics

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Resear ch progr ess of lymphoid enhancing factor - 1 in stomatology LIU Zong- xia, LI Shu Inter J Stomatol. 2008, 35 (3):  280-280～282.  Abstract ( 1525 )   HTML ( 3 )   PDF（pc） (29KB) ( 1174 )   Save Lymphoid enhancing factor- 1（LEF- 1）is a cell- type- specific transcription factor, which probably plays an important role in cellular proliferation and differentiation. LEF- 1 signaling mediates the epithelial- mesenchymal interaction during tooth morphogenesis, it regulates the fate of the dental epithelial and the cranial neural crest cell （CNC）derived mesenchymal cells during tooth morphogenesis. This review summarized the effects of LEF- 1 on the tooth development, epithelial cells activity, the differentiation of osteoblast and malignant tumor. Related Articles | Metrics

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Effects of growth hormone on odontogenesis and cr aniofacial structur e developme JI Wei, CHEN Zhi Inter J Stomatol. 2008, 35 (3):  283-283～285.  Abstract ( 1726 )   HTML ( 5 )   PDF（pc） (30KB) ( 1539 )   Save Growth hormone（GH） is one of the most important postnatal regulators, which can promote the cell proliferation and differentiation in different tissue such as muscle, skeleton and cartilage. GH affects the odontogenesis and craniofacial structure development via following routes: GH can modulate the epithelial- mesenchymal interaction as well as the differentiation and mature of ameloblasts, dentinoblasts and cementoblasts, which leads formation of tooth hard tissue. GH plays an important role in modulating osteoclasts bone resorption, which influences the tooth eruption. GH regulates the differentiation of chondrocytes in condylar through insulin- like growth factor-1（IGF- 1）. GH may affect intra- membranous and endochondral osteogenesis associated with the craniofacial structure development. Related Articles | Metrics

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Resear ch advances in formation of ter tiary dentin matr ix JIANG Long, ZHU Ya- qin Inter J Stomatol. 2008, 35 (3):  286-286～288.  Abstract ( 1883 )   HTML ( 33 )   PDF（pc） (30KB) ( 1248 )   Save Tertiary dentinogenesis is a protective reaction caused by dentin- pulp complex to respond to surrounding pathological stimulus. According to the origin of tertiary dentin matrix, it may be subdivided into reactive dentin and reparative dentin. This review focused on the process of production of tertiary dentin matrix. Related Articles | Metrics

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Nucleotide- binding oligomer ization domain and per iodontal diseases SONG Zhi, LIN Zheng- mei Inter J Stomatol. 2008, 35 (3):  289-289～291.  Abstract ( 1546 )   HTML ( 3 )   PDF（pc） (28KB) ( 791 )   Save Recent researches revealed that nucleotide - binding oligomerization domain（Nod） was an important family of cytosolic pattern recognition receptor which plays a distinct function in the innate immune system. The recognition and interaction between Nod and pathogen associated molecular pattern（PAMP）relate to many kinds of clinical diseases. At present, there are many researches between Nod and periodontal diseases. The aim of this article was not only to review the structure and function of Nod, but also the relationship between Nod and periodontal diseases. Related Articles | Metrics

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Development of study on tr eatment of dental hyper sensitiveness XIONG Bo- gang, XIONG Shi- jiang Inter J Stomatol. 2008, 35 (3):  292-292～294.  Abstract ( 1511 )   HTML ( 9 )   PDF（pc） (32KB) ( 1214 )   Save The dentin sensitivity is a common clinical disease of stomatology and its pathogenesis is uncertain. The treatment of dentin sensitivity is based on closing dentin tubule completely or partially. The methods of desensitization consist of：agent, laser, traditional Chinese drug, electric coagulation ion- introduction, matial filling, crown restoration etc. The review presents the advances in researching at present and further researching direction on the common desensitizers of dentinal sensitivity. Related Articles | Metrics

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Review of the r esear ch of concerning mechanisms between diabetes mellitus and p ZHANG Lin, WU Ya- fei Inter J Stomatol. 2008, 35 (3):  295-295～297，300.  Abstract ( 1717 )   HTML ( 4 )   PDF（pc） (36KB) ( 828 )   Save Diabetes mellitus and periodontal diseases are highly prevalent chronic diseases, they effect each other. The purpose of this review is to provide the reader review of the research of concerning mechanisms between diabetes mellitus and periodontal diseases in recent years, in regard of immunoinflammatory response, insulin resistance, and the effect of periodontal therapy on glycemic control of diabetic patients. Related Articles | Metrics

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Osteoproteger in and r eceptor activator nuclear factor - κB ligand and r ecepto HE Jia- qian, LIU Ying- qun Inter J Stomatol. 2008, 35 (3):  298-298～300.  Abstract ( 1252 )   HTML ( 3 )   PDF（pc） (28KB) ( 1382 )   Save The eruption of tooth is a complex physiological phenomenon which is regulated strictly. The tooth eruption needs to form a sprouts the channel which is made by the mature osteoclast to the alveolar bone of the occlusal surface of tooth germ. The osteoprotegerin and receptor activator nualear factor - κB ligand and receptor activator nualear factor- κB system may adjust the metabolism by the adjustment to osteoclast. Macrophage colonystimulating factor- 1 and parathyroid hormone related protein may improve the pression of RANKL protein to regulate the differentiation and activation of osteoclast, which can guarantee normal absorpted of the alveolar bone when tooth eruption. Related Articles | Metrics

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Osteoproteger in and r eceptor activator nuclear factor - κB ligand and r ecepto DONG Li- li, SONG Dai- hui Inter J Stomatol. 2008, 35 (3):  301-301～303.  Abstract ( 1298 )   HTML ( 2 )   PDF（pc） (27KB) ( 1066 )   Save Study indicates that osteoprotegerin（OPG） is an important regulatory factor in bone metabolism. It has been warm spot recently. OPG receptor activator nualear factor - κB ligand（RANKL） and receptor activator nualear factor- κB（RANK） is a system to regulate osteoclastogenesis. Temporomandibular joint（TMJ） is very important to oromaxillo- facial region morphas and function. Bone and cartilage are its moity. This review is about the study of OPG- RANKL- RANK system in TMJ. Related Articles | Metrics

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Resear ch advance on disc histological structur e and biological char acter istic KUANG Shi - jun, ZHANG Zhi - guang Inter J Stomatol. 2008, 35 (3):  304-304～306.  Abstract ( 1357 )   HTML ( 2 )   PDF（pc） (26KB) ( 1210 )   Save Tissue engineering technique has been commonly used in repairing temporomandibular joint disc defect in recent years. Nevertheless, more attention should be paid on the histological structure and biological characteristic of the disc during the restoration. This paper reviews the fundamental research on the temporomandibular joint disc. Related Articles | Metrics

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Structur al char acter ization and tissue engineer ing of temporomandibular joint BAO Guang - jie1, KANG Hong2, Kyriacos A. Athanasiou3 Inter J Stomatol. 2008, 35 (3):  307-307～310.  Abstract ( 1871 )   HTML ( 2 )   PDF（pc） (35KB) ( 1700 )   Save 5%~10% of the severe temporomandibular joint（TMJ） disorders are highly correlated to dysfunctional displacements and/or malformations of the TMJ disc, manifested as pathological disc attenuation, hyalinization, and perforation. Life quality of patient is affected by painful and dysfunctional joints. It is a great challenge to chose a safe, effective and replaceable TMJ disc implant for these patients. Tissue engineering is a promising approach for the creation of viable, effective TMJ disc functional implants. Recent studies on structural and biomechanical characterization of the TMJ disc and the principal components for the disc tissue- engineering approach, including scaffold, cell source, and biological/biomechanical stimuli were reviewed in this paper. Related Articles | Metrics

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Regulation role of Raf kinase inhibitory protein to mitogen - activated protein k LI Huang1, WU Tuo- jiang2, LI Song3, CHEN Yang- xi4 Inter J Stomatol. 2008, 35 (3):  311-311～313.  Abstract ( 1273 )   HTML ( 3 )   PDF（pc） (29KB) ( 1518 )   Save Raf kinase inhibitory protein（RKIP） that serve as endogenous modulators of mitogen- activated protein kinase（MAPK） signaling pathway, have been demonstrated to play an increasingly important role in growth and differentiation in organisms. RKIP is a highly conserved, ubiquitously expressed protein. RKIP is identified as playing a role in MAPK cascade, and identification of the mechanism by which it regulates Raf- 1 activatio Related Articles | Metrics

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Novel approach for cell cultur e in tissue engineer ing: Microscale technologies< SUN Wei- bin1, CHEN Zhiqing2 Inter J Stomatol. 2008, 35 (3):  314-314～317.  Abstract ( 1425 )   HTML ( 2 )   PDF（pc） (36KB) ( 2368 )   Save The microscale technologies developed from integrate of microfabrication and new biomaterials have been believed to be significant in tissue engineering. In this review, we will discuss their basic features, the addressing challenges in biomaterials for tissue engineering and the relative methods in this field. Related Articles | Metrics

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Immunological problems in the tissue engineer ing r esear ch YANG Miao- miao, LIU Lei Inter J Stomatol. 2008, 35 (3):  318-318～320.  Abstract ( 1609 )   HTML ( 2 )   PDF（pc） (27KB) ( 1309 )   Save The object of tissue engineering is to repair the impaired tissue and organs by making use of the principles of life science and engineering, which brings a new hope for the patients. However, there are still some problems which limit the development and application of tissue engineering. Among them, rejecting reaction of the host anti- grafts is a serious problem and it must be resolved before the clinical application of tissue engineering. In this review the immune problem in the tissue engineering was summarized. Related Articles | Metrics

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Construction of angiogenesis in bone tissue engineer ing DONG Qing- shan1, MAO Tian - qiu2 Inter J Stomatol. 2008, 35 (3):  321-321～324.  Abstract ( 1311 )   HTML ( 2 )   PDF（pc） (34KB) ( 1932 )   Save Angiogenesis is a key technique in bone tissue engineering. There are many cells and growth factors involved in vessels construction, such as vascular endothelium, smooth muscle cells, fibroblasts, vascular endothelial growth factor（VEGF） and basic fibroblast growth factor（bFGF）. The related scaffolds include bioactive materials, absorbable materials and combined materials. The main methods in vessels construction contain cultivating endothelial cells, flap prefabrication by implantation in vascular organs and using an arteriovenous（AV） loop for the induction of axial vascularization. Related Articles | Metrics

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Investigative progr ess of hypoxia inducible factor - 1α in the pathogenesis of ZHU Gui- quan, LIANG Xin- hua Inter J Stomatol. 2008, 35 (3):  325-325～328.  Abstract ( 1544 )   HTML ( 4 )   PDF（pc） (38KB) ( 1459 )   Save Osteoarthritis（OA） is one of the most common diseases in middle age and senior person, which is mainly characterized by degradation of articular cartilage. Hypoxia inducible factor（HIF） is a transcription factor which is generated by cells under hypoxia environment. HIF can promote the transcription of genes that response to hypoxia situation. Recently, several researches show that HIF- 1α is involved in the pathogenesis of OA. This review summarized current knowledge of the structure, regulation and mechanism of HIF- 1αin the pathogenesis of OA. Related Articles | Metrics

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Ear ly diagnosis of or al car cinoma MENG Xian- rui, LIU Jin- zhong Inter J Stomatol. 2008, 35 (3):  329-329～331.  Abstract ( 1462 )   HTML ( 4 )   PDF（pc） (26KB) ( 1963 )   Save Oral carcinoma is a familiar disease. It does harm to people′s body and mind badly. If we can early detect the oral precancerous lesion and oral carcinoma, it will be very important to the prognosis of the oral carcinoma. In this article, it was integrated with home and abroad research date in recent years to review the early diagnosis of oral carcinoma. Related Articles | Metrics

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Resear ch progr esses in etiology and diagnostics of salivary glands mucosa - ass ZHENG Chao- qun, TAO Qian Inter J Stomatol. 2008, 35 (3):  332-332～334.  Abstract ( 1653 )   HTML ( 2 )   PDF（pc） (31KB) ( 1135 )   Save Salivary glands mucosa- associated lymphoid tissue lymphoma（SGML） is a distinct subtype of marginal zone B- cell type non- Hodgkin′s lymphoma. The pathogenesis of SGML is different with the one of mucosa- associated lymphoid tissue lymphoma of gastro- intestinal type. There are not particular clinical manifestations with SGML, then which easily results in misdiagnosis. This article was to overview the research progresses in etiology and diagnostics of salivary glands mucosa- associated lymphoid tissue lymphoma. Related Articles | Metrics

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Association between per iosteum and distr action osteogenesis ZHOU Guang- ying, ZHAO Hua- qiang Inter J Stomatol. 2008, 35 (3):  335-335～337.  Abstract ( 1336 )   HTML ( 2 )   PDF（pc） (26KB) ( 2261 )   Save Periosteum and endosteum play roles in not only bone development and bone formation but also bone regeneration and bone reparation. This article mainly reviewed the effect of periosteum during distraction and the development of distraction osteogenesis periosteum related. Related Articles | Metrics

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Development of pr eoper ative or thodontics for the infants with cleft lip and pa DONG Rui, LI Ling, LI Yang, SHI Bing Inter J Stomatol. 2008, 35 (3):  338-338～340.  Abstract ( 1705 )   HTML ( 2 )   PDF（pc） (27KB) ( 1478 )   Save Preoperative orthodontic treatment is more and more important following the improvement of cleft lip and palate team approach all the time. It can decrease the difficulty of the surgery and increase the result of the operation. The category of appliances is various. In addition, their purposes and results are not the same completely to each other. In this article, we reviewed the development of the preoperative orthodontics for the infants with cleft lip and palate in recent years. Related Articles | Metrics

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Resear ch and application of thr ee - dimensional element analysis in str ess cha WANG Qin- qin1, ZHAO Ke2, ZHANG Xin- ping1 Inter J Stomatol. 2008, 35 (3):  341-341～343，352.  Abstract ( 1321 )   HTML ( 2 )   PDF（pc） (36KB) ( 972 )   Save brittleness has limited their wide application in molars. In order to provide effective theoretical instruction for clinical applications, a three- dimensional finite element method can be used. Through modeling, calculating and analysis, the stress characterization of all ceramic crowns and bridges can be obtained. Based on this, their structures can be optimized, and fatigue life can be reasonably predicted through fracture mechanics method. This article presented a review on recent advances in research and application of all ceramic restorations by three- dimensional finite element method. Related Articles | Metrics

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Computer aided design and computer aided manufactur ing technology in r estor ati YU Hao, WANG Yi- ning Inter J Stomatol. 2008, 35 (3):  344-344～346.  Abstract ( 1666 )   HTML ( 3 )   PDF（pc） (27KB) ( 1672 )   Save Computer aided design（CAD）and computer aided manufacturing（CAM）technology have been in general use in dentistry for many years. This article provided a review of various CAD/CAM systems, methodologies, operational components and their use in restorative dentistry. Related Articles | Metrics

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The influential factor s on the cor rosion proper ties of titanium and titanium a TANG Ya, WANG Guo- ping Inter J Stomatol. 2008, 35 (3):  347-347～349.  Abstract ( 1687 )   HTML ( 5 )   PDF（pc） (27KB) ( 1697 )   Save Titanium and titanium alloys are widely used as dental implant materials. But the environment of mouth is complicated. The influential factors such as food, toothpaste, gargarisma and different metal prosthesis will affect the oxide film of the surface of titanium and titanium alloys and affect the corrosion properties of the titanium and titanium alloys. Then they will affect the biocompatibility and function and lifetime of the dental implant, even lead to the failure of the implant. The article focused on the influential factors on the corrosion properties of titanium and titanium alloys. Related Articles | Metrics

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Or thodontic tr eatment and esthetic r econstruction of per iimplant papilla LIU Die, LIANG Xing Inter J Stomatol. 2008, 35 (3):  350-350～352.  Abstract ( 1343 )   HTML ( 3 )   PDF（pc） (28KB) ( 1773 )   Save Orthodontic technique has been applied in the area of implant esthetics. Hard tissue and soft tissue management in the implant site by utilizing orthodontic treatment before implant surgery can promote the heal and regeneration of the periimplant papilla. In this article, various preimplant orthodontic technique concerning esthetic reconstruction of periimplant papilla were reviewed. Related Articles | Metrics