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20 November 2008, Volume 35 Issue 6 Previous Issue    Next Issue

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The infection of the erupting maxillary third molar on the mesial movement of the WANG Shan, WANG Lin, ZHAO Chun-yang, YAN Bin, ZHANG Wei-bing Inter J Stomatol. 2008, 35 (6):  607-607～610.  Abstract ( 1580 )   HTML ( 8 )   PDF（pc） (172KB) ( 1143 )   Save Objective The purpose of this research is to discuss whether the erupting of the third molar makes the first molar′s mesial movement easier during the beginning of the orthodontic treatment. Methods 18patients aged from 18 to 24 were selected. All the patients were treated with 4 premolars extracted, except for unilateral removal of a third molar randomly, other conditions for both side remained identical. After 3 months′treatment, the movement of the mesial-buccal cusp of the maxillary first molar was measured in both sides. Results 1）There was no significant change in mesial movement of the maxillary first molar in the extracted side during the 3 months′ treatment（P >0.05）. 2）There was significant change in mesial movement of the maxillary first molar（1 mm） in the non-extracted side during the 3 months′ treatment（P<0.01）. 3）The distance of the mesial movement of the first molar in the non-extracted side was larger than the extracted side，and the difference was significant（P<0.01）. Conclusion In the beginning of the orthodontic treatment, the erupting maxillary third molar will push the first molar to move mesially while there was not enough erupting space for the maxillary third molar. Related Articles | Metrics

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The study of ion educed from oxide film of fired Ni -Cr porcelain alloy crowns in ZHANG Rong -he1, SONG Qi2, ZHANG Yong2 Inter J Stomatol. 2008, 35 (6):  611-611～614.  Abstract ( 1752 )   HTML ( 6 )   PDF（pc） (146KB) ( 1622 )   Save Objective To study and analyze the quantity of the Ni-ion and Cr-ion educed from two types of Ni-Cr-porcelain alloy crowns in artificial saliva, to instruct clinical applications. Methods Ni-Cr porcelain alloy which contains Cr 26.0% and 12.6% were fritted into 24 Ni-Cr porcelain fused to metal crowns, and divided two groups according to Cr concentration. Both two groups included 12 ones respectively. Twenty-four samples were averagely divided into two groups. Group A: High-chromium alloy group; Group B: Low-ch romium alloy group. They were put into artificial saliva in sealed container. The concentration of Ni-ion and Cr-ion were measured at the first, second, fourth, eighth, sixteenth and thirty-second weekends with graphite furnace atomic absorption spec trometry. Results 1）The educed Cr-ion from 24 samples of two groups increased slowly at the first weekend to the four week, then decreased. The educed Ni-ion from 24 samples kept increasing from first weekend to the thirty-second weekend. 2）The mass of low-chromium porcelain alloy group decreased were more than that of highchromium alloy group after experiment（P<0.01）. Conclusion 1）The educed chromium ion level reached the peak at the forth weekend. 2）The educed nickel ion in the low-chromium alloy group was much higher than that of the high-chromium alloy group. 3）The loss of mass in low-chromium alloy group was much higher than in the highchromium alloy group. Related Articles | Metrics

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Evidence-based case discussion of excavation of deep caries XUE Jing, ZHANG Ling-lin, ZOU Ling, LI Wei Inter J Stomatol. 2008, 35 (6):  615-615～616，623.  Abstract ( 1709 )   HTML ( 18 )   PDF（pc） (108KB) ( 1971 )   Save Objective To analyze and explain how to treat a patient with deep caries based on best evidence. Methods Used dental caries and excavation as key words to search OVID-All EBM reviews-cochrane DSR, ACP journal club, DARE, and CCTR（4th Quarter 2006） to find the best clinical evidence and evaluated the quality of evidence. Results According to the evidence, we found that partial caries removal would appear to be preferable to complete caries removal in the deep lesion, in order to reduce the risk of carious exposure. We found no evidence that partial caries removal is deleterious in terms of signs and symptoms of pulpitis or necrosis in the immediate to long term. It needs further clinical trial to decide whether cavity need re-entered at a second visit to allow the remaining decay to be removed. Conclusion Partial caries removal in symptomless, primary or permanent teeth reduces the risk of pulp exposure. We found no detriment to the patient in terms of pulpal symptoms in this procedure Related Articles | Metrics

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Detection and clinical benefits of interleukin-4 in gingival crevicular fluid in ZHOU Yan -hong1, WU Yun -xia2 Inter J Stomatol. 2008, 35 (6):  617-617～620.  Abstract ( 1973 )   HTML ( 5 )   PDF（pc） (157KB) ( 2116 )   Save Objective To detect the concentration of interleukin-4（IL-4） in gingival crevicular fluid（GCF） in the patients with chronic periodontitis before and after treatment, to research the relationship between IL -4 in GCF and periodontitis and the effect of IL-4 in pathogenesis of periodontitis and its progressiveness. Methods The concentration of IL-4 in GCF were detected by way of enzyme-linked immunosorbent assay following careful sampling of GCF with the standardized filter strips in healthy adults as well as periodontitis patients. Results The concentration of IL-4 in GCF in the inflammatory group was significant lower than the normal group（P＜0.05）. No significant deference of IL-4 concentration and statistical significance were found before and after a month′s treatment（P＞0.05）. Negative correlation was found between probing depth and the concentration of IL-4 in GCF, while the concentration of IL-4 in GCF was not significantly associated with the clinical parameters gingival index and attachment loss. Conclusion Deficiency of IL-4 can result in periodontitis and the examination of IL-4 in GCF might be used as a sensitive diagnosis index of periodontitis at early stage. Related Articles | Metrics

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The compare of curative effect between AH Plus and CCQ iodoform paste and gutta a REN Zhi-wei, ZHANG Yu, XU Ying Inter J Stomatol. 2008, 35 (6):  621-621～623.  Abstract ( 1694 )   HTML ( 6 )   PDF（pc） (113KB) ( 1363 )   Save Objective To compare the AH Plus paste and gutta, CCQ iodoform paste and gutta after root cana filling response and efficacy. Methods 300 teeth were randomly divided into groups and AH Plus paste CCQ iodoform paste group. Two expert conventional root canal therapy on the basis of paste were used AH Plus and gutta and CCQ iodoform paste and gutta root canal filling. Postoperative pain occurred within one week after march, as well as the efficacy. Results AH Plus paste group the incidence of postoperative pain than low CCQ iodoform paste group, there were significant differences（P＜0.05） after three months AH Plus paste group of higher CCQ iodoform paste group, but there was significant difference（P＜0.05）. Conclusion AH Plus paste and gutta root canal filling can be effective in reducing postoperative pain response, and CCQ iodoform paste and gutta comparison, the long-term effect there was significant difference. Related Articles | Metrics

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A clinical research on upper mandible tooth extraction without anesthetizing pala WANG Zhenglun, FANG Wen-jing, ZHONG Qiu, TONG Qing-hua, HU Ling-jie, SHAO Zhuo-na, SU Shan-shan, YANG Ming-yan Inter J Stomatol. 2008, 35 (6):  624-624～626.  Abstract ( 1861 )   HTML ( 13 )   PDF（pc） (117KB) ( 1064 )   Save Objective To compare the anesthetic effect of maxillary anesthesia on tooth extraction and to explore the possibility of maxillary tooth extraction without anesthetizing palatine side. Methods 700 cases needed extracting maxillary tooth were randomly divided into two groups：Experimental group（500 cases） and control group（200 cases）. The experimental group was only anesthetized on malar side while the control group was anesthetized with conventional anesthesia method. Anesthetic effects of two groups were compared. Results 1） There was statistic significance in pain during anesthetics injection between the two groups（P<0.05）. 2）But there was no difference in pain during tooth extraction. Conclusion To anesthetize malar side only during maxillary tooth extraction can get good anesthetic effect, with no need to anesthetize palatine side. Related Articles | Metrics

综述

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Helper T cell polarization-associated cytokines in oral lichen planus LU Rui, ZHOU Gang Inter J Stomatol. 2008, 35 (6):  627-627～629.  Abstract ( 1446 )   HTML ( 7 )   PDF（pc） (116KB) ( 1129 )   Save Oral lichen planus（OLP） is a chronic mucocutaneous immune inflammatory disease of unknown etiology. Helper T（Th） cells play a key role in the pathogenesis of OLP. Recently, the role of Th cells polarization in OLP has drawn widely attentions. Previous studies have demonstrated a close relationship between the altered expression of different Th cells polarization-associated cytokines and the pathogenesis of OLP. These cytokines in OLP are the subject of this review. Related Articles | Metrics

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The histological basis about apexification XIE San -xiang, ZHU Sheng -rong Inter J Stomatol. 2008, 35 (6):  630-630～632.  Abstract ( 1682 )   HTML ( 12 )   PDF（pc） (105KB) ( 1753 )   Save Apexification is a technique to induce a calcified barrier in a root with an open apex or the continued apical development of an incomplete root in young permanent teeth through some special material. Recent years there were many studies about its inductors, but lack of the histological basis and the echanisms. This article will review the studies about the histological basis. We expect to designate the direction to the further studies on apexification. Related Articles | Metrics

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Programmed cell death associated genes in the oral mucosa carcinogenesis ZHENG Yan-fen, CHEN Zuo-liang Inter J Stomatol. 2008, 35 (6):  633-633～635.  Abstract ( 1486 )   HTML ( 5 )   PDF（pc） (108KB) ( 611 )   Save Cell death is a gene-controlled form of programmed death, is closely related with oral mucosa carcinogenesis. To study programmed cell death associated genes helps further investigate the relationship between cell programmed cell death regulation and oral mucosa lesion, understand the pathogenesis of oral cancer, and explore the prevention and treatment of the oral mucosa carcinogenesis. In this paper, research progress of cell programmed cell death regulatory genes related with the oral mucosa carcinogenesis will be summarized. Related Articles | Metrics

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The application of regeneration of guided tissue and guided bone as well as its g WANG Ying1, QU Xiao-juan2 Inter J Stomatol. 2008, 35 (6):  636-636～638.  Abstract ( 1847 )   HTML ( 6 )   PDF（pc） (102KB) ( 1958 )   Save The wide application of guided tissue regeneration（GTR） and guided bone regeneration（GBR） into the treatment of the periodontal osseous defects opens up spacious room for rebuilding periodontal tissue, while there is certain limitation to the respective use of each. So, the present researches largely tend to apply bone graft, bioabsorbable membrane and growth factors into the treatment of periodontal osseous defects. The following passage is a literature review elaborating on the physical and chemical nature of bioabsorbable membrane, bone graft and basic fibroblast growth factor, as well as the application of the three into the treatment of periodontal osseous defects. Related Articles | Metrics

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Anatomic features of accessory nerve and clinical significance of its injury WANG Yin1, LI Long-jiang1,CHEN Yao2 Inter J Stomatol. 2008, 35 (6):  639-639～642.  Abstract ( 1874 )   HTML ( 5 )   PDF（pc） (124KB) ( 3502 )   Save Functioned as the dominative nerve for sternocleidomastoid and trapezius muscle, accessory nerve plays a very important role in the movement of neck and shoulder. Its anatomic features provide important guidances in the operations such as the neck dissection and nerve repair. A summarization for anatomic features of accessory nerve and clinical significance of its injury is delivered. Related Articles | Metrics

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Research of neuroepithelial interaction in mechanisms of perineural invasion in a LIANG Li, ZHANG Yu -ru Inter J Stomatol. 2008, 35 (6):  643-643～646.  Abstract ( 1472 )   HTML ( 5 )   PDF（pc） (130KB) ( 1315 )   Save Perineural invasion in adenoid cystic carcinoma brings about great difficulties for clinical therapy, and effects prognosis of the patient directly. This article reviews the research of the interaction between tumor cell and neural tissue, and the mechanisms of perineural invasion in adenoid cystic carcinoma. Related Articles | Metrics

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Negative regulation of bone morphogenetic protein signal transduction ZHU Hai -yan, LIN Zheng-mei Inter J Stomatol. 2008, 35 (6):  647-647～649，653.  Abstract ( 1638 )   HTML ( 5 )   PDF（pc） (139KB) ( 1573 )   Save As a group of multifunctional signal secreting molecules, bone morphogenetic protein（BMP） may not only modulate a broad array of cellular responses including proliferation, differentiation, migration and apoptosis, but also play key roles on the formation of bone, cartilage and even tooth. This review, which is about the progress of negative accommodation of BMP signal pathway, includes the features and functions of extra-cellular antagonists, intra-cellular antagonists, and negative transcription factors. Related Articles | Metrics

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Transforming growth factor -beta -Smad signal pathway in the development of palat CHEN Yi -yang, HUANG Hong-zhang Inter J Stomatol. 2008, 35 (6):  650-650～653.  Abstract ( 1567 )   HTML ( 4 )   PDF（pc） (148KB) ( 829 )   Save The transforming growth factor（TGF）-β family plays important roles in palatal development with complex signal system via TGF-β-Smad signal pathway. We reviewed the expression of TGF-β family and the TGF-β-Smad signal pathway in developing palate, and the relationship among all of above. Related Articles | Metrics

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Suppressors of cytokine signalling and periodontal diseases GAO Li, WU Ya-fei Inter J Stomatol. 2008, 35 (6):  654-654～656，659.  Abstract ( 1258 )   HTML ( 4 )   PDF（pc） (135KB) ( 919 )   Save The suppressors of cytokine signalling（SOCS） proteins are negative regulators of cytokine signalling. They can be induced rapidly in response to cytokines and some agents, and inhibit signalling via the JAK-STAT pathway. Periodontal disease is a kind of multifactorial disease, many pathogenic factors and complex cytokine signalling are involved in this disease. Now here is a review about the relationship between SOCS and periodontal disease. Related Articles | Metrics

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The adhesion of glass ionomer cement ZHOU Hai-yan, SONG Guang-tai. Inter J Stomatol. 2008, 35 (6):  657-657～659.  Abstract ( 1826 )   HTML ( 6 )   PDF（pc） (102KB) ( 1831 )   Save Glass ionomer cement（GIC） used as filling material has many superorinary characteristics, so it is widely used in clinic. Unfortunately, its adhesion is neglected by clinicians since it was introduced to the profession. This article will review about the component and setting mechanism, adhesion mechanism and the factors which influence the adhesion of GIC. Related Articles | Metrics

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Usage of ultrasound in estimating the function of temporomandibular joint CHEN Yi-jia, ZHU Shuang-lin Inter J Stomatol. 2008, 35 (6):  660-660～661,664.  Abstract ( 1700 )   HTML ( 7 )   PDF（pc） (102KB) ( 959 )   Save The functional state of temporomandibular joint（TMJ） is important to oral and maxillofacial surgery, orthodontic and prosthodontic treatment. As a newly introduced approach for TMJ functional assessment, ultrasound is used more and more widely because of its non-invasive, economic and effective character. This article summarized ultrasound′s usage on detecting TMJ disk position, condylar motion track and TMJ sound. Related Articles | Metrics

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The application of sol-gel technique in improving the surface function of commonl GUO Shan, SU Jian-sheng Inter J Stomatol. 2008, 35 (6):  662-662～664.  Abstract ( 1330 )   HTML ( 4 )   PDF（pc） (103KB) ( 1684 )   Save The sol-gel technique has become a well-developed coating preparation method in recent years, which has more superiorities than other coating techniques. The laboratory studies of the application of sol-gel technique in prosthodontics are increasing with the extensive usage of oral cast alloy. This paper is concerned with the application of sol-gel technique in commonly used oral cast alloy. Related Articles | Metrics

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Progress of researches on implant surface roughness at the nanoscale level YU Wei-qiang, ZHANG Fuqiang, JIANG Xin -quan Inter J Stomatol. 2008, 35 (6):  665-665～668.  Abstract ( 1344 )   HTML ( 5 )   PDF（pc） (132KB) ( 854 )   Save The clinical success of oral implants is related to their osseointegration. Chemical composition and topography are crucial for the success of dental impants. With the development of nanotechnology, the modification of surface roughness at the nanoscale level becomes one of the major research interest. This review focuses on the chemical composition and topography on nanoscale implant surface. Related Articles | Metrics

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Research advances of smart scaffold materials for tissue engineering BAO Ting -wei, WANG Hui -ming Inter J Stomatol. 2008, 35 (6):  669-669～671.  Abstract ( 1375 )   HTML ( 3 )   PDF（pc） (98KB) ( 1155 )   Save As one of the three elements for tissue engineering, a proper scaffold makes a great sense of proliferation and differentiation of the seeding cells. In recent times, the research of improving scaffold is mostly directed towards developing smart scaffold materials. Compared to the traditional biomaterials, smart materials can induce the differentiation of cells and the deliver of growth factor more effectively. In this article, we will made a review for the research advances of smart materials for tissue engineering. Related Articles | Metrics

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The progress research of periodontal ligament stem cells CHEN Fang, XU Yan Inter J Stomatol. 2008, 35 (6):  672-672～674.  Abstract ( 1736 )   HTML ( 5 )   PDF（pc） (110KB) ( 1524 )   Save Periodontal ligament stem cell which can differentiate into osteoblasts, cementoblast-like cells, adipocytes, and collagen-forming cells is a new kind of seeds cell in periodontal tissue regeneration. Here we reported the research progress of periodontal ligament stem cells in biological characteristic, multi-directional differentiation, transplantation and its potential application in periodontal tissue regeneration. Related Articles | Metrics

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Advances in the research on axin-2 and tooth development XU Xiu-min, MEI Ling-xuan Inter J Stomatol. 2008, 35 (6):  675-675～677.  Abstract ( 1538 )   HTML ( 4 )   PDF（pc） (120KB) ( 1000 )   Save Axin gene was been found since 1997 which encoded the Axin, the family include axin-1 and axin-2 gene. Axin-2 gene is a negative regulator of Wnt/β-catenin signalling, regulates cellular proliferation, differentiation, and is essential for development and morphogenesis, tooth development is under strict genetic control, gene affecting early tooth development. Axin-2 gene may be associated with familial tooth agenesis or oligodontia. It also acts as a tumor suppressor by limiting the deregulation of Wnt signalling that is common in some cancers. To study the axin-2 gene will be helpful for us to understand the aspects of tooth development. Related Articles | Metrics

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The public's knowledge of children's dental trauma LUO Gang, WANG Jun Inter J Stomatol. 2008, 35 (6):  678-678～680.  Abstract ( 1449 )   HTML ( 5 )   PDF（pc） (101KB) ( 1056 )   Save Dental trauma of children is becoming more and more important to us with the rising of living standards. However, when facing such type of trauma, lacking of associated knowledge often made people taking inappropriate treating ways and thus leading to delays in treatment. This article aims at the common issues of dental trauma of children and discusses them. Related Articles | Metrics

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The current opinion on the pathogenesis of fibrous dysplasia YI Jie, YING Wei-min, HUA Cheng-ge Inter J Stomatol. 2008, 35 (6):  681-681～683.  Abstract ( 1710 )   HTML ( 10 )   PDF（pc） (112KB) ( 1572 )   Save Fibrous dysplasia is a common disease in oral and maxillofacial region. Researches on the molecular mechanism of its etiology can help us to know its biologic behavior. The present review is to focus on the recent advances of the etiology and the molecular mechanisms of fibrous dysplasia and McCune-Albright syndrome. Related Articles | Metrics

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Systematic reviews about fluoride varnishes for preventing dental caries FU Ying-ying1, QIU Ya-fei2, HU De-yu1 Inter J Stomatol. 2008, 35 (6):  684-684～686.  Abstract ( 1553 )   HTML ( 9 )   PDF（pc） (105KB) ( 1187 )   Save For mastering the evidence of Cochrane systematic reviews of fluoride varnishes for preventing dental caries, we searched the Cochrane library and summarized the practicality, effectiveness, safety and acceptability, side effects of fluoride varnishes. There is little information concerning acceptability of treatment or possible side effects in the included reviews. Related Articles | Metrics

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Correlation between periodontal disease and preterm birth and low birth weight HE Jian-ling1, XIA Juan2 Inter J Stomatol. 2008, 35 (6):  687-687～689.  Abstract ( 1366 )   HTML ( 4 )   PDF（pc） (113KB) ( 1223 )   Save Women′s oral health will be influenced by the mood and physical change during pregnancy. The gingivitis and periodontitis are the most common symptoms of pregnant women. The correlation between periodontal disease and preterm birth and low birth weight has been investigated and debated in recent years. This study was carried out a review about the effects of periodontal disease on preterm birth and low birth weight. Related Articles | Metrics

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The study of small integrin-binding ligand N-linked glycoproteins family as denta HUO Li -jun, LING Jun -qi Inter J Stomatol. 2008, 35 (6):  690-690～693.  Abstract ( 1548 )   HTML ( 4 )   PDF（pc） (138KB) ( 1527 )   Save It is a main method in study of the differentiate mechanism of dental pulp stem cells and looking for the markers for odontoblast differentiation that induces dental pulp stem cells differentiate to odontoblast and survey odontoblast differentiation in vitro. The members of small integrin-binding ligand N-linked glycoproteins family play an important role in the differentiation and mineralization of odontoblast. This is a review of the research progress in small integrin-binding ligand N-linked glycoproteins family as dental pulp stem cells differentiate, including dentin matrix protein-1, dentin sialophosphoprotein, matrix extracellular phosphoglycoprotein. Related Articles | Metrics

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Analysis of dental anxiety and factors associated with onset in adults LU Ying, LIU Li Inter J Stomatol. 2008, 35 (6):  694-694～696.  Abstract ( 1503 )   HTML ( 5 )   PDF（pc） (102KB) ( 2746 )   Save Dental anxiety is a public health problem in population in the world. It has been one of the main problems of negative effects on dental utilization behaviors. Extreme anxiety can affect dental health and general health, and often deteriorates the patient-dentist relationship. Understanding and combating patients' dental anxiety poses a significant problem for the dental profession. In this article, the author reviewed evaluating method, prevalence, relative factors, negative influence and treatment of dental anxiety in adults. Related Articles | Metrics

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Research of etiology about the denture stomatitis Lü Chuan, ZHANG Shuai, GAO Ning Inter J Stomatol. 2008, 35 (6):  697-697～700.  Abstract ( 1441 )   HTML ( 4 )   PDF（pc） (135KB) ( 1178 )   Save Denture stomatitis is a common oral mucosal lesion in complete denture and removable partial denture wearers which mostly affects the palatal mucosa. The pathogenesis of denture stomatitis is uncertain. Studies have showed that there is a close relationship between Saccharomyces albicans and denture stomatitis. This article reviews the advances in the research on the etiology of denture stomatitis. Related Articles | Metrics

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Study of finite element analysis in the post-core-crown restorations FU Zhi-feng1, LI Yan2 Inter J Stomatol. 2008, 35 (6):  701-701～703.  Abstract ( 1411 )   HTML ( 5 )   PDF（pc） (98KB) ( 1100 )   Save Finite element analysis is an effective way in oral biomechanical research. A research is to study the stress distribution of post-core-crown restorations in a functional state and to optimize the prosthodontics design through the finite element analysis. This article is a review about some studies in this field. Related Articles | Metrics

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Computer aided manufacturing technology in the field of application of prosthodon HENG Yun-zhe1, WU Lin1, WANG Yong2 Inter J Stomatol. 2008, 35 (6):  704-704～708.  Abstract ( 1614 )   HTML ( 9 )   PDF（pc） (154KB) ( 1604 )   Save The technology of computer aided manufacturing has been used in various fields of oral medicine widely, and people's attentions are focused on these more. The technology's update outstrips the speed and extent of people's imagination, and develops towards integration, small-scale, intelligence and better-opening gradually. It is reviewed in this paper that the computer aided manufacture technology′s application in the field of prosthodontics currently. Related Articles | Metrics

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General studies about coronal microleakage of fiber post restorations CHEN Qiang1, WEI Su-hua2 Inter J Stomatol. 2008, 35 (6):  709-709～711.  Abstract ( 1613 )   HTML ( 5 )   PDF（pc） (100KB) ( 1349 )   Save Fiber post is widely used in clinic for it's good aesthetic and mechanical properties which has been proved by many studies. Furthermore, it′s good for conserving the dentin. However, few reports refers to it's longterm clinical effect. Coronal microleakage, which is the frequent cause for the failure of post and core restoration, has close relation to the long-term clinical effect of fiber post restoration. General studies about the coronal microleakage of fiber post will be discussed in this review. Related Articles | Metrics

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Research progress about reducing the artifacts from metallic prosthesis in magnet YAN Shao-wen, LIU Li Inter J Stomatol. 2008, 35 (6):  712-712～714.  Abstract ( 1452 )   HTML ( 5 )   PDF（pc） (103KB) ( 1390 )   Save The artifacts from metallic prosthesis in magnetic resonance imaging will degrade the image quality of the tissue around. This paper summarizes methods used during every procedure in magnetic resonance imaging, and also shows the effects. Related Articles | Metrics

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Research in the shape and function of curve of Spee's DENG Xiao, LI Xiao-bing Inter J Stomatol. 2008, 35 (6):  715-715～716，720.  Abstract ( 1491 )   HTML ( 7 )   PDF（pc） (107KB) ( 1993 )   Save Investigation in curve of Spee's is always the popular topic in orthodontics. However, researchers have not reached consensus about curve of Spee's in its function, influencing factors, space and stability of the leveling and so on. This article reviews the study status quo related to curve of Spee's. Related Articles | Metrics

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Advances in the research on oral cancer in young people YANG Jing, LIANG Xin-hua Inter J Stomatol. 2008, 35 (6):  717-717～720.  Abstract ( 1563 )   HTML ( 6 )   PDF（pc） (131KB) ( 1527 )   Save Oral cancer in young people is probably a new disease other than that in old ones. In recent years, there are ever increasing epidemiological evidences for a rise in oral cancer rates amongst younger individuals worldwide. Therefore, it is of the greatest importance to study the epidemiology, risk factors and molecular mechanism of the oral cancer in this sub-group for preventing the development and improving the prognosis. This article reviews the advances in the research on oral cancer in young people from the above aspects. Related Articles | Metrics

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Advances on diagnosis and treatment of gummy smile ZHU Xiu-juan, WANG Chun-ling Inter J Stomatol. 2008, 35 (6):  721-721～723.  Abstract ( 1456 )   HTML ( 12 )   PDF（pc） (102KB) ( 1506 )   Save Many patients go to hospital for gummy smile. Lots of factors are associated with gummy smile. Treatments are different for patients with different reasons. The article reviewed gummy smile′s features, relative factors, methods of treatment and points of attention during the treatment. Related Articles | Metrics