国际会议消息(部分)

会议名称：2002年牙科展览及瑞士牙科分会大会2002 Dental Exhbn & Cong of the Swiss DentistsSoc会议地点：Geneva, Switzerland: Palexpo会议日期：6-9 Jun 02主办单位：Swiss Dental Industry Assn (PRODONTA), SwissDental Industry Assn联 系 人：Mrs Michele Marco, PRODONTA会议名称：2002年美国耳鼻咽喉科学会及头颈外科基金会年会2002 Ann Mtg of the Am Academy ofOtolaryngology-Head and Neck Surgery Foundation(CME-ANA Cat 1)会议地点：San Diego (California), United States: San DiegoConv Ctr…     

国际会议消息(部分)

会议名称：第90届世界牙科年会 90th Ann World Dental Cong (FDI 2002)会议地点：Vienna, Austria会议日期：1-5 Oct 02主办单位：World Dental Fed (FDI)联 系 人：Osterreichisches Nationalkomitee der FDI, pA Bundesfachgruppe fur ZMK, Weihburgasse 10-12, A-1011 Vienna, Austria会议名称：第143届美国牙科分会年会 143rd Ann Session of the Am Dental Assn (CME- ADA Course)会议地点：New Orleans (Louisiana), United States: Marial Conv Ctr会…     

国际会议消息（部分）

会议名称:国际牙科种植大会International Dental Implantology Congress,Sharing Experience地点:亚历山大/埃及时间:April27-29,2006主办方:Dina El Kharadly联系人:Email:coordinator@aoiaegypt.com会议名称:第22届美国美容牙科学会年会22nd Annual Scientific Meeting of AACD会议地点:San Diego,California会议日期:May16-20,2006联系人:The American Academy of Cosmetic Dentistry(AACD)联系方法:Nicholas Davis.2503Eastbluff Dr.Ste102.Newport Beach,CA U.S.A.Tel:+1-949-6449211;http://www.smilesby-davis.co…     

国际会议消息（部分）

会议名称:美国牙科协会大会暨展览会IADR/AADR/CADRGenSession&Exhbn会议地点:Honolulu(Hawaii),UnitedStates会议日期:10-13Mar04主办单位:AmAssnforDentalResearch联系人:IntAssnforDentalResearch,1619DukeSt.Alexandria,Virginia22314,UnitedStates会议名称:2004年国际正畸协会大会2004IntAssnforOrthodonticsAmMtg会议地点:Savannah(Georgia),UnitedStates:SavannahMarriottHotel会议日期:1-4Apr04主办单位:IntAssnforOrthodontics联系人:DetlefMoore,IntAssnforOrthodontics,735NWaterSt,Ste617,Milwaukee,W…     

国际会议消息（部分）

会议名称:内布拉斯加洲牙科协会年会AnnSessionoftheNebraskaDentalAssn会议地点:Lincoln(Nebraska),UnitedStates会议日期:23-25Apr04主办单位:NebraskaDentalAssn联系人:NebraskaDentalAssn,3120OSt,Lincoln,Nebraska68510,UnitedStates会议名称:安大略牙科协会春季大会AnnSpringMtgofOntarioDentalAssn会议地点:Toronto,Ontario,Canada:MetroTorontoConvCtr会议日期:6-8May04主办单位:OntarioDentalAssn联系人:DianaThorneycroft,OntarioDentalAssn,4NewSt.Toronto,OntarioM5R1P6,Canada会议名称:第26届亚太地区牙…     

国际会议消息(部分)

会议名称:第九届国际牙科现代疼痛控制大会 gth hi De血alc。ng。n M。上rnPah c。n汀d 会议名称:美国牙科学会第141届年会举办地点:Jerusalem,Israel:Jerusalem Renaissance Hotel 14lst Ann Session of the Am Dental Assn会议日期:2-SMay 00 会议地点:Chicago山Ilinois),Uni     

国际会议消息(部分)

会议名称:艾冈牙科学会第141届年会会议名称:第88)l世界内科协会年会141stAnnsesslonottheAmDentalAssn*88thAnnworldDentalCong(CMEcourse)会议地点:Chicago(illinois),UnitedStates会议地点:Paris,France:PalalsdesCongres会议日期:14-18OCt00会议日期:28NOV-ZDVC00主办单位:AmDentalAssn(ADA)主办单位:WorldDentalFed(FDI)联系人:ADA联系人:P:lllWIISOO,FDI联系方法:211EChicagoAveste200,Chicago,Illinois606ll,Unitedstates会议名称:冈际齿科展示会IntDentalShow(IDS)会议名称:2000年美国口腔学会颌面外科种…     

国际会议消息(部分)

会议名称:第51届欧洲龋齿研究组织大会51stEurOrgforCariesResearchCong会议地点:IstanbulTurkey会议日期:30Jun-3Jul04主办单位:EurOrgforCariesResearch联系人:DocFYanikoglu,EurOrgforCariesResearch,DeptPreventiveDentistry,Nordh?userStr78,D-99089Erfurt,Germany会议名称:美国国家牙科协会年会NatlDentalAssnAnnConv会议地点:LosAngeles(California),UnitedStates:CenturyPlaza会议日期:30Jul-4Aug04主办单位:NatlDentalAssnInc联系人:NatlDentalAssnInc,351716thStNW.Washington,DistrictofColumbia20010,Un…     

国际会议消息(部分)

会议名称:美国牙科学会第141届年会联系方法:UniversityPal。keho,Deptoforthodontics,14lstAnnsessionoftheAmDentalAssn＊PalackeholZ,CZ-77200Olomouc,Czech会议地点:Chicago（IllinoU,UnitedStatesRepublic会议日期:14-18Oct00主办单位:Sponsor:AmDentalAssn（ADA）会议名称:第十九届澳大刊亚、新西X11腕Ijffi而联系人:GenInfo:ADA外科会年会联系方法:ZllEChicagoAveste200,Chicago,l9thBienniaIConfoftheAustralianandNewIllinois606ll,UnitedstatesZealandAssnoforalandMaxil卜facialSurgeons会议名称:2000年美国…     

国际会议消息(部分)

会议名称:2000年美画口腔学会颌面外科种植牙联盟大会联系方法:MesseNalzl,D-500679Cologne,Ge仰any2000AmAssnofOralandMaxillofacialSurgeonsDentalImplantConf会议名称:第13）山澳大利亚闲科人会会议地点:Chicago（illinois）,UnitedStates:SheratonChicagol3thAnnNailConfonSpedalCareIssuesIn会议日期:13Dec00Dentistry（CME/CEUSCourse）主办单位:AmAssnofOralandMaxillOIaCtalSurgeons会议地点:Chicago（lllinol。）,UnitedSlates:WestinMichigan（AAOMS）AveHotel联系人:GenInfo:AAOMS会议日期:30May-IAp…     

Effect of Carisolv™ solution on sound, demineralized and denatured dentin – an ultrastructural investigation

The purpose of this in vitro study was to analyze the micromorphological changes caused by Carisolv^™ gel on sound, demineralized, and denatured dentin. Fractured dentinal surfaces, dentinal surfaces demineralized superficially by phosphoric acid etching and dentinal surfaces denatured due to lactic acid and collagenase pretreatment were exposed to freshly mixed Carisolv^™ gel or 0.25% sodium hypochlorite. No additional mechanical action was exerted during the 20-min exposure of specimens to the Carisolv^™ solution. Specimens were evaluated by transmission electron microscopy. Electron microscopic evaluation did not indicate any ultrastructural changes of the fractured or demineralized dentinal surfaces due to the 20-min Carisolv^™ treatment. Denatured dentin was partially removed within a 20 min period of chemical action of the Carisolv^™ solution leaving only a 1- to 2-μm thick layer of residual denatured dentin on the specimen’s surface. In contrast, 0.25% sodium hypochlorite treatment completely dissolved the demineralized as well as denatured dentin layer within 20 min. It is concluded that Carisolv^™ gel (1) does not affect sound fractured dentin, (2) does not dissolve demineralized dentin, and (3) has a limited potential to chemically dissolve denatured dentin. Received: 30 June 1999 / Accepted: 13 July 1999     

“中华口腔医学会2011年学术年会”通知

<正>主办单位:中华口腔医学会承办单位:国药励展协办单位:江苏省口腔医学会会议时间:2011-09-23—26会议地点:南京国际博览中心自2011年始,中华口腔医学会将每年举办学术年会和口腔设备器材博览会,时间固定在9月,地点为不同地区轮换。     

The effect of tooth bleaching on the bond strength of an experimental primer to enamel

This study evaluated the effect of tooth bleaching on the microtensile bond strength (μTBS) of an experimental primer to enamel. Materials used were an experimental tooth manicure system (Shofu) composed of primer and light-cured flowable resin composite. Flattened enamel surfaces of bovine teeth were bleached with Nite White Excel (Discus Dental) or Hi-Lite (Shofu), with nonbleached teeth used as a control group. Each bleaching group was subdivided into three bonding modes. These were group A, application of primer for 3 s, followed by 5 s of air blowing; group B, application of primer for 10 s, followed by 5 s of air blowing; and group C, application of 20% phosphoric acid for 10 s, spraying with water for 5 s, and then air blowing for 5 s. The flowable resin paste was placed and polymerized after each enamel surface treatment. Using a low-speed diamond saw, the specimens were sectioned into beam-shaped samples with a cross-sectional area of approximately 1 mm² at the bonded interface. The samples were subjected to the μTBS test with a 1.0 mm/min crosshead speed. Data were statistically analyzed using two-way analysis of variance (ANOVA) followed by the Bonferroni/Dunn post-hoc test. The two-way ANOVA revealed significant differences in the effects of the bleaching systems and bonding mode, and significant differences were also found for the interaction between them (P < 0.01). There were no statistically significant differences in μTBS values among the specimens in groups A and B regardless of bleaching or nonbleaching (P > 0.05). In contrast, the μTBS value of group C without bleaching was significantly higher than that of all other experimental groups (P < 0.01).     

国际牙科研究协会(IADR)第65届大会在芝加哥召开

国际牙科研究协会(International Assoiation for Dental Research)第65届大会暨美国牙科研究协会1987年年会于1987年3月11日至15日在美国中部城市芝加哥召开,会议地点设在该城伊利若斯中心。     

Occlusal wear of a resin-modified glass ionomer cement following three surface treatments

Unacceptable occlusal wear has been report- ed for resin-modified glass ionomer cements (RMGICs) placed in permanent molar teeth. Three different surface treatments of a RMGIC were evaluated over periods of up to 2 years for their effects on restoration wear behaviour: (a) sealing with a thin layer of low viscosity unfilled resin (sealed restoration), (b) sealing with a thicker layer of a lightly-filled pit and fissure sealant (sealant restoration), and (c) co-curing the RMGIC with a posterior resin composite (co-cured restoration). After 2 years the cumulative median (quartiles) wear was for (a) 100 (50–150) μm, (b) 25 (0–50) μm, and (c) 25 (25–38) μm. Although method (b) effectively reduced the surface wear of the RMGIC, this treatment required frequent re-sealing, involving 52% of the restorations. Sealing the surface of a RMGIC placed in permanent molars was not a satisfactory method for reducing occlusal wear. However, co-curing the RMGIC with a posterior resin composite reduced occlusal wear significantly (P<0.0001), without the need for frequent re-applications of a pit and fissure sealant to the RMGIC. Received: 23 May 2000 / Accepted: 26 September 2000     

3种不同材料瓷贴面临床修复效果的文献分析

以瓷贴面修复为代表的微创、无创修复理念日益推广.不同材料的瓷贴面在临床修复效果上表现出一定的差异性.本文参考美国公共健康协会(United States Public Health Service,USPHS)的评价标准,通过文献的回顾,分析比较常见的3种不同瓷贴面材料(氧化锆、玻璃陶瓷和长石陶瓷)的临床修复效果,为临床提供参考依据.     

国际会议消息

会议名称：国际齿科展示会 Ｉｎｔ Ｄｅｎｔａｌ Ｓｈｏｗ（ＩＤＳ）会议地点：Ｃｏｌｏｇｎｅ,Ｇｅｒｍａｎｙ：Ｋｏｌｎ Ｍｅｓｓｅ会议日期：２７－３１ Ｍａｒ ０１主办单位：Ｋｏｌｎ Ｍｅｓｓｅ（ＫＭ）联系人：ＫＭ联系方法：Ｍｅｓｓｅ Ｐｌａｔｚ １,Ｄ－５００６７９ Ｃｏｌｏｇｎｅ,Ｇｅｒｍａｎｙ会议名称：第１３届牙医师特殊医疗大会 １３ｔｈ Ａｎｎ Ｎａｔｌ Ｃｏｎｆ　ｏｎ　Ｓｐｅｃｉａｌ　Ｃａｒｅ　Ｉｓｓｕｅｓ　ｉｎ Ｄｅｎｔｉｓｔｒｙ（ＣＭＥ／ＣＥＵＳ Ｃｏｕｒｓｅ）会议地点：Ｃｈｉｃａｇｏ（Ｉｌｌｉｎｏ…     

Relation between mercury concentrations in saliva, blood, and urine in subjects with amalgam restorations

The aim was to determine the relationship between mercury content of resting and stimulated saliva, and blood and urine. Eighty subjects participated; 40 of them attributed their self-reported complaints to dental amalgam (patients), the others were matched with respect to age, sex and amalgam restorations (controls). Serum, 24-h urine, resting and chewing stimulated saliva were analyzed for mercury using the ASS-technique. Quality, number, surfaces and total area of amalgam fillings were recorded clinically and using study models. Median (range) mercury levels in serum were 0.67 (0.1–1.52) μg/l for patients and 0.60 (0.1–1.3) for controls. In urine levels were found to be 0.77 (0.11–5.16) and 0.94 (0.17–3.01) μg/g creatinine respectively. No significant differences were found between the groups. Resting saliva contained 2.97 (0.10–45.46) μg/l in patients and 3.69 (0.34–55.41) in controls (not significant). Chewing mobilized an additional amount of 16.78 (–6.97 to 149.78) μg/l in patients and 49.49 (–1.36 to 504.63) in controls (P≤0.01). Only a weak correlation was found between mobilized mercury in saliva and serum (r=0.27; P≤0.05) or urine (r=0.47; P≤0.001). For resting saliva the respective values were r=0.45 (P≤0.001) and r=0.60 (P≤0.001). Saliva testing is not an appropriate measure for estimating the mercury burden derived from dental amalgam. Received: 5 May 2000 / Accepted: 28 July 2000     

Working parameters of a sonic scaler influencing root substance removal in vitro

This study assessed defect depth and volume resulting from root instrumentation using a KaVo Sonicflex Lux 2000 L sonic scaler with a slim scaling tip (Perio-Tip no. 8) in vitro. Combinations of the following working parameters were analyzed: lateral forces of 0.5 N, 1 N, and 2 N; tip angulations of 0°, 45°, and 90°; and instrumentation time of 10 s, 20 s, 40 s, and 80 s. Defects were quantified using a three-dimensional optical laser scanner. Instrumentation time had an almost linear impact on defect depth and volume. Although lateral force (β-weight 0.55±0.062) had a greater influence on defect volume than tip angulation (β-weight 0.29±0.062), their effects on defect depth were similar (β-weight 0.43±0.052 and 0.50±0.052, respectively). The combination of force and angulation showed synergistic effects resulting in a wide range of defect depths (21.9±0.96 μm to 174±28.8 μm, at 40 s) and volumes (0.056±0.019 mm³ to 0.68±0.10 mm³ at 40 s). Severe root damage (>50 μm/40 s) did not occur at any combination of 0.5 N lateral force and/or 0° tip angulation. By adjusting lateral force and tip angulation, the efficacy of the assessed sonic scaler may be adapted to various clinical needs.     

Effects of citric acid administration on femoral trabecular structures in ovariectomized mice

Objectives To examine the effects of citric acid administration on trabecular structures. Methods Ovariectomized female ICR mice (n = 39), 8 weeks of age, were divided into four groups: ovariectomized control (OVX-control, n = 9, standard diet); citric acid (CIT, n = 10, citric acid 5 g/100 g diet); vitamin K₂ (menaquinone 7; VK2, n = 10, vitamin K₂ 50 μg/100 g diet); and citric acid + vitamin K₂ (CIT + VK2, n = 10, citric acid 5 g/100 g diet and vitamin K₂ 50 μg/100 g diet). After 12 weeks, the bone mass of the right femur was measured using peripheral quantitative computed tomography and the three-dimensional (3-D) trabecular structure of the right femur was assessed using microfocus computed tomography. Results The bone mineral density was significantly increased in the VK2 group versus the OVX-control group (P < 0.05). In the 3-D trabecular structure analysis, skeletal perimeter and number were significantly greater in the CIT, VK2, and CIT + VK2 groups than in the OVX-control group. Skeletal separation, spacing, and trabecular bone pattern factor were significantly lower in the CIT, VK2, and CIT + VK2 groups than in the OVX-control group. Almost all parameters in node–strut analysis were significantly greater in the CIT, VK2, and CIT + VK2 groups than in the OVX-control group. Conclusions These results suggest that citric acid improved trabecular structures. However, simultaneous administration of citric acid and vitamin K₂ did not have any additional effect.