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20 May 2010, Volume 37 Issue 3 Previous Issue    Next Issue

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Fimbrillin A is involved in the alveolar bone absorption induced by Porphyromonas gingivalis DUAN Xing-yu, SUN Tuo-qi, Okahashi N, WANG Rui, HUANG Ding-ming Inter J Stomatol. 2010, 37 (3):  249-249～251.  DOI: 10.3969/j.issn.1673-5749.2010.03.001 Abstract ( 2379 )   HTML ( 15 )   PDF（pc） (361KB) ( 1970 )   Save Objective  To investigate the effect of Porphyromonas gingivalis（P.gingivalis） fimbrillin（Fim） A on alveolar bone absorption resulting from P.gingivalis challenged periodontitis in mouse. Methods  Mice were orally infected with the wild strains P.gingivalis ATCC33277, P.gingivalis KDP150 without fimA gene. Fifteen male, specific pathogen-free 3-week-old mice were divided into three groups: Control group, group infected with P.gingivalis ATCC33277, and group infected with P.gingivalis KDP150. After twenty two days, all animals were killed. The distance from the alveolar bone crest to the cemento-enamel junction was measured with Image-Pro software. Results  Compared with control group, alveolar bone absorption was higher in the P.gingivalis ATCC33277 group（P<0.05）, but no difference was observed between P.gingivalis KDP150 group and control group（P>0.05）. P.gingivalis ATCC33277 group was higher than P.gingivalis KDP150 group in alveolar bone absorption（P<0.05）. Conclusion  P.gingivalis fimA is a potential virulence factor for alveolar bone absorption in the procedure of periodontitis. Related Articles | Metrics

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Adaptive changes of morphology and filament-actin of dendritc cells during matura LI Dai-qing, LI Yong, JI Ping, TONG Xi, LI Xian, WANG Qi-ming. Inter J Stomatol. 2010, 37 (3):  252-252～256.  DOI: 10.3969/j.issn.1673-5749.2010.03.002 Abstract ( 1689 )   HTML ( 13 )   PDF（pc） (391KB) ( 1157 )   Save Objective To investigate the adaptive changes of morphology and cytoskeleton of the dendritic cells （DC） before and after lipopolysaccharide（LPS）-induced maturation. Methods The murine bone marrow mononuclear cells were induced into immatured dendritic cells（imDC） with granulocyte -macrophage colony -stimulating factor（GM-CSF） and interleukin（IL）-4, after 6 days imDC were further induced into matured DC（mDC） with LPS for 48 hours. These DC morphology was observed under fluorescent microscope and inverted phase contrast microscope（IPCM）, and the changes of cytoskeleton between imDC and mDC were compared. Results mDC expressed higher level of CD11c, MHC-Ⅱ, CD86 compared with imDC via flow cytometry. After LPS stimulation, the DC became a little bigger. The external dendrites had obvious changes from thin, short（imDC） to thick, long（mDC）, finally thin, short again. Filament-actin（F-actin） was mainly focused on cytomembrane and dendrites. The mean fluorescence of F-actin in cytomembrane and dendrite was the highest after 24 hours stimulated with LPS, but decreased apparently after 48 hours stimulated with LPS, and this time the F-actin in cytoplasma became sparse and fragmentarypartially. Conclusion During the maturation, DC became more and more large with number, length and consistence of surface processes improved gradually, which helps to augment surface of cell and play the important role of translation and presentation of antigen. Gradually largened nucleolus suggested that it maybe play a very important role in the translation and presentation of antigen. Within the progress of maturation, cytoskeleton, such as F-actin, gave a closed cooperation via gradually increased number. Related Articles | Metrics

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Influence of periosteum on revascularization of free bone graft YUAN Meng-jiang, WANG Ya, YAO Yao, TANG Xiu-fa, HUA Cheng-ge Inter J Stomatol. 2010, 37 (3):  257-257～261.  DOI: 10.3969/j.issn.1673-5749.2010.03.003 Abstract ( 1675 )   HTML ( 8 )   PDF（pc） (350KB) ( 848 )   Save Objective The purpose of the present study is to analyze effect of periosteum in angiogenesis of non-vascularied autogenous bone grafts. Methods Thirty-six New Zealand white rabbits were subjected to this study. Bilateral radial bones were partially removed as free bone grafts, half of which periostea were intact while rest of which periostea were peeled off. All grafts were implanted in the masseter muscle separately. At 3 days, 1, 2, 3, 4 and 6 weeks after surgery the rabbits were sacrificed and the specimens were procured for Chinese ink perfusion, CD34 immunohistochemistry stain and tetracycline fluore-scence labeling. Microvessel density（MVD） and tetracycline fluorescence labeling intergrated optical density（Di ） were assessed in order to evaluate angiogenesis and rate of new bone formation of autogenous bone grafts. Results At 3 days and 1 week after surgery, MVD and Di of two groups had no significant difference（P>0.05）. Revascularization and new bone formation of both groups were found at 2 weeks after surgery. At 2, 3, 4 and 6 weeks after surgery, MVD and Di of test group were significantly higher than those of control group（P<0.05）. Conclusion Angiogenesis in non-vascularized autogenous bone graft was promoted when periosteum of graft was intact. Thereby followed osteogenesis was also accelerated. Related Articles | Metrics

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An anatomical study of the location of the root apex in mandibular first permanen ZHOU Wei, LEI Lei, XIE Hui-xu, LIU Qian, WANG Si, WANG Rui Inter J Stomatol. 2010, 37 (3):  262-262～264.  DOI: 10.3969/j.issn.1673-5749.2010.03.004 Abstract ( 1931 )   HTML ( 5 )   PDF（pc） (107KB) ( 929 )   Save [Abstract] Objective For better use of pigs′ mandibles as models in endodontic surgery, the study assesses the location of the root apex in mandibular first permanent molars in pigs. Methods 48 pigs′ mandibles were selected. All had sound permanent teeth and the first molars had erupted. The tooth length（distance between dental cusp and root apex location shadowed through bone）, the distance between root apex location and the buccul surface of the bone, mesiodistal width, buccolingual width, and the length of the clinical crown were measured with a vernier calliper. SPSS software was used to analyze the data. Results The average tooth length was 27.98 mm, and the average distance between the root apex and buccal surface of the bone was 4.53 mm. Linear regression analysis showed significant relationship between the buccolingual width and tooth length, mesiodistal width and tooth length. No statistically significant relationship were found in other indices. Conclusion The experiment found that the buccolingual width, mesiodistal width and the average tooth length can be used for predicting the location of the root apex. Related Articles | Metrics

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Clinical application of easy resilient attachment denture CHEN Bing Inter J Stomatol. 2010, 37 (3):  265-265～267.  DOI: 10.3969/j.issn.1673-5749.2010.03.005 Abstract ( 1937 )   HTML ( 8 )   PDF（pc） (164KB) ( 2217 )   Save Objective To introduce the manufacture process and observe the clinical effect of easy resilient attachment denture. Methods There were 68 patients in total with easy resilient attachment denture, and 63 patients were investigated with the satisfaction questionnaire. Results 63 patients were followed up for 2 years and the degree of satisfaction was 97%. Conclusion Easy resilient attachment denture can obtain satisfactory clinical effect. It is worth to extend. Related Articles | Metrics

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Influence of thermocycling on the microtensile bond strength of three composite r PAN Xiao-bo, ZENG Peng, PENG Li-hui, REN Yue, ZHONG Ai-xi, HONG Li, MA Long-bai, YANG Zheng Inter J Stomatol. 2010, 37 (3):  268-268～271.  DOI: 10.3969/j.issn.1673-5749.2010.03.006 Abstract ( 2003 )   HTML ( 6 )   PDF（pc） (261KB) ( 1073 )   Save Objective To evaluate the microtensile bond strength of three kinds of composite resins used as core materials around fiber posts with and without themocycling. Methods TENAX fiber posts were randomly divided into three groups, according to the resin composite used. They included one core materials specifically developed for core build-up ParaCore, one hybrid composite—AP-X, one flowable composite—Beautifil Flow. The fiber posts were then luted with a corresponding composite resin to be made into core -built up specimen. 1 mm ×1 mm sticks were got from the specimen for microtensile testing with and without thermocycling. Results ParaCore, AP-X and Beautifil Flow with fiber posts decreased after thermocycling but there was no significant difference compared with which without thermocycling（P＞0.05）. ParaCore with fiber posts was significantly higher than that of AP-X with and without thermocycling（P<0.05）. Conclusion 1）Within the limits of this study, thermocycling has no evident influence on three different resin composites. 2）The bond performance of ParaCore is superior to the other two resin composites. Related Articles | Metrics

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Culture in vitro and the fabrication of cell sheet for bone marrow stem cells JING Heng, LI Ning-yi, TAN Shuai, GAO Zhen-hua, CHEN Li-Qiang Inter J Stomatol. 2010, 37 (3):  272-272～274.  DOI: 10.3969/j.issn.1673-5749.2010.03.007 Abstract ( 1695 )   HTML ( 5 )   PDF（pc） (241KB) ( 1410 )   Save Objective To explore the methods of culture and induction of bone marrow stem cells（BMSCs） in vitro and fabrication of cell sheet of BMSCs. Methods Bone marrow stem cells were isolated with the method of density gradient centrifugation from canine and cultured. BMSCs were induced to differentiate to osteoblasts. The BMSCs were observed under inverted microscope and scanning electron microscope. The BMSCs after induced were transferred to the temperature-responsive culture dishes and cultured in incubator at 37 ℃, 5% CO2 and saturated humidity. The temperature of the incubator was changed from 37 ℃ to 20 ℃, to fabricate the cell sheet of BMSCs. Results BMSCs was fusiform and grew in whirl-like arrangement while the BMSCs induced were oval or polygonal; when the temperature dropped to 20 ℃, bone marrow stem cell sheet detached automatically from the temperature-responsive culture dishes. Conclusion BMSCs can be effectively obtained with the method of density gradient centrifugation and induced to differentiate into osteoblasts. Bone marrow stem cell sheet layer can be used to wrap the scaffold for construction of functional osteogenesis. Related Articles | Metrics

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Clinical observation of Gelatamp colloidal silver gelatin sponge on the treatment LI Ti, CHI Chun-yuan, BAI Jian-wen, YAN Tao, ZHAO Xue-juan Inter J Stomatol. 2010, 37 (3):  275-275～276.  DOI: 10.3969/j.issn.1673-5749.2010.03.008 Abstract ( 3376 )   HTML ( 30 )   PDF（pc） (83KB) ( 1573 )   Save Objective To evaluate the clinical effects of Gelatamp colloidal silver gelatin sponge on the treatment of pericoronitis. Methods 227 patients with third molar pericoronitis were divided into two groups according to the clinical symptoms. Group A did not take oral antibiotic, and group B took oral antibiotic. Each group was divided randomly into experimental group（A1, B1） and the control group（A2, B2）. The experimental group（A1, B1） used Gelatamp colloidal silver gelatin sponge in the deep soft tissue pocket, and the control group（A2, B2） used Iodine Glycerol once per day in the pocket for 3-7 days. The clinical effects were evaluated. Results The difference was observed between group Gelatamp colloidal silver gelatin sponge and group Iodine Glycerol in both group A and group B（P<0.05）. Group Gelatamp colloidal silver gelatin sponge has better clinical effects than group Iodine Glycerol. Conclusion Gelatamp colloidal silver gelatin sponge in curing third molar pericoronitis can effectively improve the clinical symptom and clinical effects. Related Articles | Metrics

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An in vitro study of the marginal fit and fracture strength of Ceramage ceramic o TENG Ji-li, LUO Lin, LIANG Xing, WANG Hang. Inter J Stomatol. 2010, 37 (3):  277-277～279，283.  DOI: 10.3969/j.issn.1673-5749.2010.03.009 Abstract ( 2051 )   HTML ( 9 )   PDF（pc） (152KB) ( 1438 )   Save Objective To evaluate the influence of different types of cements and thermocycling on marginal adaptation and fracture strength of Ceramage ceramic optimized polymer（ceromer） crowns. Methods Sixteen ceromer crowns and sixteen metal-ceramic crowns were fabricated. Eight specimens of each crown type were cemented, using either glass ionomer cement（GI） or adhesive resin cement（AR）. All crowns were exposed to 5 000 thermal cycles between 5 ℃ and 55 ℃. The marginal adaptation were evaluated with a stereomicroscope. The fracture strength of the crowns were measured with universal testing machine. Results The marginal adaptation of ceromer crowns was statistically better than metal-ceramic crowns（P<0.05）. The mean marginal gap increased significantly after cementation in all groups（P<0.05）. The thermocycling did not result in a significant rise of the marginal gap of crowns（P>0.05）. The fracture strength of ceromer crowns was significantly lower than metal-ceramic crowns（P <0.05）. Conclusion Within the limits of this in vitro study it could be concluded that the marginal adaptation of ceromer crowns was better than metal-ceramic crowns. The fracture stre ngth of ceromer crowns exceeded normal occlusal forces. Adhesive resin cement improved the fracture strength of ceromer crowns. Related Articles | Metrics

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Investigation of malocclusion in 3 006 primary and middle schoolchildren of Urumq LIU Hai-xia, Adalet Ahematijiang Inter J Stomatol. 2010, 37 (3):  280-280～283.  DOI: 10.3969/j.issn.1673-5749.2010.03.010 Abstract ( 1660 )   HTML ( 7 )   PDF（pc） (141KB) ( 1360 )   Save Objective To determine the prevalence and distribution of malocclusion in primary and middle schoolchildren of Urumqi. Methods Using the stratified and cluster random sampling, 3 006 multinational primary and middle schoolchildren aged from 7-15 years in Urumqi were chosen. At the standard of Angle′s classification and individual normal occlusion, a full clinical examination was carried out. Results Of all the 3 006 subjects, there were 1 447 malocclusion cases according to the Angle′s classification, and the overall prevalence of malocclusion was 48.14%. Among them, 1 079 cases belonged to Angle′sⅠ（74.57%）, 175 cases belonged to Angle′s Ⅱ（12.09%）, and 193 cases belonged to Angle′s Ⅲ（13.34%）. There was statistically significant difference between males（54.63%） and females（42.19%） in their overall prevalence of malocclusion（P <0.05）. The prevalence of the Han, Uygur, Hazakh and Hui people were 43.28%, 51.37%, 40.38% and 52.81% respectively, and there were significant differences among the four main nationalities（P<0.05）. The prevalence distribution in three different age spans（7-9, 10-12, and 13-15） was 41.64%, 47.81% and 50.62% respectively, and still had statistical significance（P<0.05）. From the malocclusion traits detected, the crowding of dentition was the main malocclusion, and others in turn were deep over bite, abnormal space of anterior, deep over jet, cross jet（including edge to edge bite）, etc. Conclusion The prevalence of malocclusion of primary and middle schoolchildren in Urumqi is higher, and it is different in the nationality, sex, and age. The research may help with the prevention and therapy about malocclusion. Related Articles | Metrics

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Correlation of permanent successor with physiological root resorption of primary MA Lan, SONG Guang-tai Inter J Stomatol. 2010, 37 (3):  284-284～286.  DOI: 10.3969/j.issn.1673-5749.2010.03.011 Abstract ( 2126 )   HTML ( 9 )   PDF（pc） (112KB) ( 2179 )   Save The permanent tooth germ plays an important role in physiological root resorption of deciduous tooth, but not the alone factor. However, the primary teeth that are absent of permanent successor will produce root resorption and eventually exfoliate. This review will introduce odontclast and its related signal cascades and the correlation of permanent successor with physiological root resorption of primary tooth. Related Articles | Metrics

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Relation between the surface protein of Streptococcus mutans and infective endoca ZHANG Wenzhen, HAO Yu-qing Inter J Stomatol. 2010, 37 (3):  287-287～290.  DOI: 10.3969/j.issn.1673-5749.2010.03.012 Abstract ( 1698 )   HTML ( 7 )   PDF（pc） (153KB) ( 676 )   Save Streptococcus mutans（S.mutans） is a member of the Streptococci viridans group which accounts for over 45% cases of infective endocarditis（IE）. For the last few years, scientists have been managing to realize the relation between S.mutans and IE by researching on the surface protein of S.mutans. This article reviewed the cell surface protein antigen, wall-associated protein, glucan-binding protein, glucosyltransferases, biofilm regulatory proteinA, fibronectin and several adhesins of S.mutans to conclude their association with IE. Related Articles | Metrics

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Research progress on homeostasis of periodontal tissues in molecular mechanism ZHANG Pan-pan, LI Shu. Inter J Stomatol. 2010, 37 (3):  291-291～293，297.  DOI: 10.3969/j.issn.1673-5749.2010.03.013 Abstract ( 2035 )   HTML ( 5 )   PDF（pc） (141KB) ( 2315 )   Save Periodontal ligament-associated protein（PLAP）-1 is a recently identified novel member of the small leucine -rich repeat proteoglycan family. PLAP-1 is expressed specifically and predominantly in the periodontal ligament（PDL） and that it negatively regulates the mineralization of PDL cells. PLAP-1 is thought to play a crucial role for homeostasis of periodontal tissues. Here we reviewed the structure, distribution, function and the regulation of the PLAP-1 in periodontal tissues. Related Articles | Metrics

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Twist gene and dental pulp stem cells SHI Jun, LIU Xing-rong Inter J Stomatol. 2010, 37 (3):  294-294～297.  DOI: 10.3969/j.issn.1673-5749.2010.03.014 Abstract ( 1809 )   HTML ( 7 )   PDF（pc） (142KB) ( 1361 )   Save The twist gene is a highly conserved transcription factor that belongs to the family of basic helixloop-helix protein, and it plays an important role in the embryogenesis. This article reviews the lately research about the structure of twist gene, the regulatory mechanisms on its expression and the striking role on dental pulp stem cells. Related Articles | Metrics

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Application of ectopic prefabricated vascularized bone in the reconstruction of m HE Qing-yin, HOU Jing-song. Inter J Stomatol. 2010, 37 (3):  298-298～301.  DOI: 10.3969/j.issn.1673-5749.2010.03.015 Abstract ( 1687 )   HTML ( 7 )   PDF（pc） (127KB) ( 1312 )   Save Reconstruction of mandibular defect caused by congenital malformation, trauma, infection or tumor remains a challenge. The traditional free bone grafting is limited to the poor recipient due to preceding radiotherapy. Meanwhile, vascularized bone grafting can also cause donor site morbidity and secondary deformity. Ectopic prefabricated vascularized bone grafting has recently become a new approach for mandibular reconstruction. This review focuses on the methods, essential conditions, advantages and research progress of ectopic prefabricated vascularized bone formation. Related Articles | Metrics

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Research progress of resin monomer toxicity mechanism FANG Jun-yan, LING Jun-qi Inter J Stomatol. 2010, 37 (3):  302-302～305.  DOI: 10.3969/j.issn.1673-5749.2010.03.016 Abstract ( 1720 )   HTML ( 6 )   PDF（pc） (138KB) ( 1081 )   Save Monomers was residual when composite resin polymerized incompletely. Unpolymerized monomers could penetrate into oral, dentin and periapical tissue, contributing to the cytotoxicity and mutation toxicity. In this review, we summarize the toxicity mechanisms about interference redox equilibrium, inhibition 3-kinase/Akt signaling cascade, activation mitogen-activated protein kinase pathway, induction gene expression of inflammatory factor and inflammatory reaction, cell cycle proteins regulatory the cell cycle of the resin monomer in cell. Related Articles | Metrics

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Research progress of physiological root resorption mechanism of deciduous teeth XIE Ni -na, SONG Guang-tai Inter J Stomatol. 2010, 37 (3):  306-306～309.  DOI: 10.3969/j.issn.1673-5749.2010.03.017 Abstract ( 1797 )   HTML ( 6 )   PDF（pc） (142KB) ( 1064 )   Save Deciduous root resorption is a physiological phenomenon that results in exfoliation of the deciduous teeth. To date, numerous experiments have been done by the researchers all over the world. It showed that receptor activator of nuclear factor-κB-receptor activator of nuclear factor-κB ligand-osteoprotegerin, interleukin and other factors might regulate the tooth root resorption, and contribute to the complex process. This article will summarize the research progress of the deciduous root physiological resorption, and also want to put forward some new approaches. Related Articles | Metrics

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The resistance of periodontal anaerobes and the ways to avoid resistance WANG Shu-min, YU Li-ying Inter J Stomatol. 2010, 37 (3):  310-310～313.  DOI: 10.3969/j.issn.1673-5749.2010.03.018 Abstract ( 1894 )   HTML ( 7 )   PDF（pc） (146KB) ( 1328 )   Save With antibiotics being administrated widely as the treatment and prophylaxis in periodontal disease, the resistance to anaerobes in periodontal disease becomes more and more serious. For reasonable selection of antimicrobial agents and exploration of new products, in this review，increasing problems of resistance to antimicrobials, the machisms of resistance of anaerobes will be described． Related Articles | Metrics

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Research progress in repair of oral and maxillofacial nerve injury with tissue en WANG Yan-ying, GONG Ping Inter J Stomatol. 2010, 37 (3):  314-314～316，319.  DOI: 10.3969/j.issn.1673-5749.2010.03.019 Abstract ( 1712 )   HTML ( 5 )   PDF（pc） (136KB) ( 1088 )   Save Tissue engineering technology has opened up a new field of oral and maxillofacial nerve repair. Recent studies are focused on seed cells, nerve bridges，extracellular matrix and neurotrophic factors. This article reviewed the research progress in repair of oral and maxillofacial nerve with tissue engineering technology. Related Articles | Metrics

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Anatomic feature of root canal curvature in permanent teeth ZHENG Qing-hua, LI Wen, HUANG Ding-ming. Inter J Stomatol. 2010, 37 (3):  317-317～319.  DOI: 10.3969/j.issn.1673-5749.2010.03.020 Abstract ( 2028 )   HTML ( 11 )   PDF（pc） (104KB) ( 1098 )   Save The instrumentation, which plays the essential role in the success of endodontic therapy, is strongly affected by root canal curvature. The existence of secondary curvature may increase the difficulty of root canal therapy. The clinician should be aware of the distribution and degree of root canal curvature in permanent teeth before choosing any instrumentation system or method. This review showed the frequency and degree of root canal curvature in human permanent teeth and provided a summary of the research results. Related Articles | Metrics

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Research progress on hypoxia -inducible factor -1α ZOU Duo -hong, HUANG Yuan -liang. Inter J Stomatol. 2010, 37 (3):  320-320～323.  DOI: 10.3969/j.issn.1673-5749.2010.03.021 Abstract ( 2427 )   HTML ( 5 )   PDF（pc） (152KB) ( 2487 )   Save Under the condition of anaemia, trauma, necrosis and defect, cells and tissues are often in mionectic condition. Hypoxia in cells and tissues leads to the transcriptional induction of a series of genes that participate in angiogenesis, iron metabolism, glucose metabolism, cell growth and proliferation. Among these genes, HIF-1α plays crucial roles in the angiogenesis of tumors and mammalian development. Recently year, it is found that besides inducing angiogenesis, HIF-1α has effect on osteogenesis. This review focused on the molecular structure, downstream target genes, osteogenesis of HIF-1α. Related Articles | Metrics

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Research progress on implant therapy in periodontally compromised patients GUO Jing, CHEN Zhuo-fan. Inter J Stomatol. 2010, 37 (3):  324-324～326.  DOI: 10.3969/j.issn.1673-5749.2010.03.022 Abstract ( 2045 )   HTML ( 4 )   PDF（pc） (104KB) ( 999 )   Save In comparison with periodontally healthy patients, periodontally compromised patients who receive implant therapy may be at elevated risk for peri-implant diseases and show lower implant survival and success rate. The rationality of periodontal treatment planning, timing of implant installation, examination, diagnosis and treatment of peri-implant diseases during supportive periodontal therapy（SPT） are the impacting factors of implant survival and success rate in periodontally compromised patients. This review discussed the research progress of implant therapy in periodontally compro mised patients. Related Articles | Metrics

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Horizontal transmission of oral bacterial communities between parent-child YU Miao, YI Hong. Inter J Stomatol. 2010, 37 (3):  327-327～329，332.  DOI: 10.3969/j.issn.1673-5749.2010.03.023 Abstract ( 1767 )   HTML ( 4 )   PDF（pc） (140KB) ( 1196 )   Save Oral cavity is a complex micro-ecological system, and there are about more than 700 kinds of bacteria in human oral. The interaction between a variety of bacteria contributed to the occurrence and development of dental caries. Most studies have shown that mother is the main source of infant caries, and with the depth study of oral flora, many data indicate that there are other forms of transmission, such as the father of transmission, the level of transmission. This article focused on the applications of different techniques of molecular biology at horizontal transmission of the oral bacterial communities between parent-child, and reviewed the influence of family oral health behavior to early childhood caries study. Related Articles | Metrics

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Oral lesion of inflammatory bowel disease and its diagnosis LI Min, SONG Wen-ting, LIN Mei. Inter J Stomatol. 2010, 37 (3):  330-330～332.  DOI: 10.3969/j.issn.1673-5749.2010.03.024 Abstract ( 1917 )   HTML ( 6 )   PDF（pc） (110KB) ( 873 )   Save Inflammatory bowel disease（IBD） is a sort of chronic intestinal tract disease with specified intestinal manifestation. Its extraintestinal manifestations are outstanding and each system can be involved. The lesion of oral mucosa is one of the common extraintestinal manifestations. Clinically, dentists are usually unfamiliar with this kind of disease. In this review, we summarized the extraintestinal manifestations of inflammatory bowel disease, especially, the oral lesion and its diagnosis. Related Articles | Metrics

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Liquid-phase sintering of aluminum oxide-based dental ceramics ZHANG Chao-liang, ZHANG Jing-chao, LIAO Yun-mao, LI Wei Inter J Stomatol. 2010, 37 (3):  333-333～336，340.  DOI: 10.3969/j.issn.1673-5749.2010.03.025 Abstract ( 1750 )   HTML ( 4 )   PDF（pc） (162KB) ( 1836 )   Save The liquid-phase sintering of aluminum oxide-based ceramics leads to lower sintering temperature and enhances ceramic properties, so it′s of great economical and social significance for dental all-ceramic restorations application. This paper reviewed sintering aids and ceramic properties of liquid-phase sintering of aluminum oxide-based dental ceramics systematically. The related mechanisms were also interpreted. Related Articles | Metrics

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Research progress of clinical application of thermochemotherapy of tumor CHENG Shi-bing, XIE Hui-xu, LI Long-jiang. Inter J Stomatol. 2010, 37 (3):  337-337～340.  DOI: 10.3969/j.issn.1673-5749.2010.03.026 Abstract ( 2058 )   HTML ( 5 )   PDF（pc） (135KB) ( 1614 )   Save A great number of randomized controlled clinical trials have definitely confirmed hyperthermia combined with chemotherapy as a novel clinical modality for the treatment of cancer. Hyperthermia combined with chemotherapy can cure malignant cancer efficiently not only because of the sum of thermal damage and chemotherapy-induced injury to the tumor cells, but also of their synergistic effect. That is to say that the explicit sensitizing effect of hyperthermia to chemotherapy can improve the effect of chemotherapy in cancer treatment. This article will review its clinical applications and researches of hyperthermia combined with chemotherapy. Related Articles | Metrics

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Impact of the mother on early childhood caries QIU Rong-min, ZHAO Wei Inter J Stomatol. 2010, 37 (3):  341-341～343，347.  DOI: 10.3969/j.issn.1673-5749.2010.03.027 Abstract ( 1595 )   HTML ( 5 )   PDF（pc） (138KB) ( 906 )   Save There is a high prevalence rate of early childhood caries（ECC）, and it results from a multiplication of risk factors, including different hosts, microorganisms and inappropriate behaviors. The children′ s oral health status is closely related to the mother, such as heredity, life style, educational level, concept of oral health care, as well as the harmful factors during pregnancy, and all factors above could affect the incidence of ECC. Therefore, for the prevention of ECC, it is important to know about the mother′s impact on ECC and make the mother relinquish the unhealthy habits. This article provides an overview about the mother′s impact on ECC. Related Articles | Metrics

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Clinical application of gingival retraction technology GU Min, GU Wei-ping Inter J Stomatol. 2010, 37 (3):  344-344～347.  DOI: 10.3969/j.issn.1673-5749.2010.03.028 Abstract ( 1892 )   HTML ( 8 )   PDF（pc） (123KB) ( 1823 )   Save Gingival retraction technology is a method which can separate free gingival margin from teeth and exposure subgingival areas. The technology of gingival retraction is used on various aspects of oral treatments. Different gingival retraction technologies have different clinical effects. The purpose of this article is to illustrate the clinical applications of commonly used gingival retraction technologies for clinical reference. Related Articles | Metrics

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A new root canal obturation material Resilon/Epiphany JIANG Yu-qing, HUANG Ding-ming Inter J Stomatol. 2010, 37 (3):  348-348～350.  DOI: 10.3969/j.issn.1673-5749.2010.03.029 Abstract ( 2048 )   HTML ( 10 )   PDF（pc） (106KB) ( 1043 )   Save Root canal therapy is the main method for pulpitis and apical periodontitis. Obturation of the root canal which is the key of the root canal therapy is thought to be critical for the outcome of root canal treatment. To date, a new root canal obturation system, the epiphany endodontic obtutation system（R/E）, has been applied into the clinic for its excellent sealing ability. Many studies have evaluated this system with disputable conclusion. In this article, we review these studies about this new root canal obturation system and hope to helpful for clinical treatment. Related Articles | Metrics

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Application of laser scanning for three-dimensional reconstruction and anthropome YANG Min, LIU Fu-xiang Inter J Stomatol. 2010, 37 (3):  351-351～354.  DOI: 10.3969/j.issn.1673-5749.2010.03.030 Abstract ( 1720 )   HTML ( 6 )   PDF（pc） (121KB) ( 1244 )   Save In recent years, with the development of the science and the computer technology, people on the right track facial soft tissue research has developed from the two-dimensional to three-dimensional, and more and more technologies can be used for the three-dimensional reconstruction, including direct measurements, moiré topography, morphanalysis, laser scanning, structured light, stereophotography, grating projection, computed tomography, and so on. Laser scanning is one of the more advanced technologies. Although affected by many factors, we believe that as technology continues to improve and perfect, laser scanning in the three-dimensional reconstruction of facial soft tissue will be more widely used. This review is about the principle, the technical composition, the characteristics and the applications of laser scanning technology. Related Articles | Metrics

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Effectiveness of semiconductor laser irradiation in the prevention of postoperati ZHONG Shi-chun, ZHANG Zhi -guang. Inter J Stomatol. 2010, 37 (3):  355-355～358.  DOI: 10.3969/j.issn.1673-5749.2010.03.031 Abstract ( 1811 )   HTML ( 7 )   PDF（pc） (121KB) ( 941 )   Save The extraction of mandibular third tooth is a complicated operation in alveolar surgery. The main complications are pain, swelling, infection, dry socket, bleeding, temporomandibular joint disorders and restrict opening. Semiconductor laser is widely used in a good many fields. The review discusses the mechanism of semiconductor laser and summarizes effectiveness in the prevention of postoperative complication after mandibular third tooth extraction. Related Articles | Metrics

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Research progress on conserve measures of avulsed teeth after injuring ZHANG Li-juan, ZHAO Shi-fang. Inter J Stomatol. 2010, 37 (3):  359-359～361.  DOI: 10.3969/j.issn.1673-5749.2010.03.032 Abstract ( 1882 )   HTML ( 5 )   PDF（pc） (101KB) ( 1613 )   Save Injure in maxillofacial region would lead to distingguished types of dental trauma. Tooth luxation is a fairly common and serious injure. The preferred treatment is tooth replantation. And the prognosis of replantation of an avulsed tooth is determined by first-aid measures. The crucial to successful replantation is the correct firstaid measures which can enhance periodontal ligament viability. Thus, according to the environment of periodontal ligament, many scholars at home and abroad are exploring the best condition and medium and so on from different angles, in order to enhance the postoperative survival rate and relieve patients′ suffering. Therefore, the review presents recent results on storaging avulsed teeth. Related Articles | Metrics

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Research progress on titanium alloy for dental framework u LIU Shuang, ZHANG Lian-yun, LI Chang－yi. Inter J Stomatol. 2010, 37 (3):  362-362～364.  DOI: 10.3969/j.issn.1673-5749.2010.03.033 Abstract ( 2061 )   HTML ( 3 )   PDF（pc） (106KB) ( 1133 )   Save Dental framework materials should have good biological and mechanical properties. Titanium alloys have good application prospects for dental prosthetic materials because of its excellent bio-mechanical properties. However, there are still some problems concerning the mechanical of pure titanium and biological properties of Ti-6Al-4V for dental removable partial denture. Therefore, it is paying great attention to study the mechanical and biological properties of titanium alloy which may be suitable for removable partial denture. This article is a brief introduction about the preparations of the titanium alloy which may meet the requirements above, and it is also about the influencing factors to the comprehensive performance of titanium alloy, which come from the choiced adding elements and the post-processing. Related Articles | Metrics

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Research progress on psychosocial impacts of orthodontic patients LI Xiao-ting, CHEN Yang-xi. Inter J Stomatol. 2010, 37 (3):  365-365～368，371.  DOI: 10.3969/j.issn.1673-5749.2010.03.034 Abstract ( 2270 )   HTML ( 4 )   PDF（pc） (154KB) ( 3274 )   Save With the development of society and economy, people not only pay attention to the functional disability of malocclusion, but also put more emphasis on psychological pressure resulted from malocclusion and psychological impacts of orthodontic treatment. Domestic and foreign scholars have widely studied psychology on orthodontics, and turned to use questionnaires provided with objective evaluation items from traditional subjective clinical judgement designing various correlated questionnaires to evaluate patients′ psychological behaviour. The purpose of this paper is to review the latest relative researches on psychosocial impacts of orthodontic patients and associated questionnaires and to discuss the further domestic research direction. Related Articles | Metrics

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Superstructure and occlusion design of implant prosthesis CUI Rong-zhi, BAO Yan, QI Yi. Inter J Stomatol. 2010, 37 (3):  369-369～371.  DOI: 10.3969/j.issn.1673-5749.2010.03.035 Abstract ( 1852 )   HTML ( 6 )   PDF（pc） (108KB) ( 1196 )   Save In light of differences in the structure properties between teeth and implants, it is necessary to make the planning and designing of implant superstructure and occlusion distinguish from nature teeth. In recent years, significance of occlusion for dental implant treatment has attracted clinician researchers′ attention． Long-term stability of implant denture is an important element of raising successful rate of denture plantation and is the result of multiple occlusive factors. The potential risk factors for peri-implant bone loss and failure of the implant/implant prosthesis may be occlusal overloading, non-axial load or cantilevers, etc. This review summaried the research development of superstructure and occlusion design of implant prosthesis. Related Articles | Metrics