牙科种植的治愈时间可以缩短

用于治疗缺失患牙的牙科钛钉种植技术有了最新进展。

瑞典哥特堡大学的研究人员通过对种植体表面微层及纳米层结构的研究，提出了一种新的方法，或许可以缩短患者的治愈时间。

“增加纳米层的表面活性，并改变种植体的传导性能，可以使我们自身的人体生物力学发生改变、加速种植体的结合。

这样可以降低患者的不适感，提高治疗期间的生活质量。

”牙科种植体用于缺失牙的替代已有40年的历史。

PeringvarBränemark是发现钛具有良好生物相容性且骨种植后没有排斥反应的第一人，最近荣获了欧洲发明家奖。

钛的表面包绕着一层薄氧化层。

正是这层氧化物的特性，对该次回答还有不清楚的地方，建议申请加入www·yake#net#cn牙齿疾病QQ交流群144*2704^84了解,决定了种植体与骨组织能良好地结合。

HealingTimesForDentalImplantsCouldBeCutThetechnologyusedtoreplacelostteethwithtitaniumdentalimplantscouldbeimproved.Bystudyingthesurfacestructureofdentalimplantsnotonlyatmicrolevelbutalsoatnanolevel,researchersattheUniversityofGothenburg;Sweden,havecomeupwithamethodthatcouldshortenthehealingtimeforpatients."Increasingtheactivesurfaceatnanolevelandchangingtheconductivityoftheimplantallowsustoaffectthebody'sownbiomechanicsandspeedupthehealingoftheimplant,"saysJohannaLöbergattheUniversityofGothenburg'sDepartmentofChemistry."Thiswouldreducethediscomfortforpatientsandmakesforabetterqualityoflifeduringthehealingprocess."Dentalimplantshavebeenusedtoreplacelostteethformorethan40yearsnow.Per-IngvarBrånemark,whowasrecentlyawardedtheprestigiousEuropeanInventorAward,wasthefirstpersontorealisethattitaniumwasverybody-friendlyandcouldbeimplantedintobonewithoutbeingrejected.Titaniumiscoveredwithathinlayerofnaturallyformedoxideanditisthisoxide'spropertiesthatdeterminehowwellanimplantfuseswiththebone.Itbecameclearatanearlypointthataroughsurfacewasbetterthanasmoothone,andthesurfaceoftoday'simplantsisoftencharacterisedbydifferentlevelsofroughness,fromthethreadtothesuperimposednanostructures.Anchoringtheimplantintheboneexertsamechanicalinfluenceonthebonetissueknownasbiomechanicalstimulation,andthisfacilitatestheformationofnewbone.Asthetopography(roughness)ofthesurfaceisimportantfortheformationofnewbone,itisessentialtobeabletomeasureanddescribethesurfaceappearanceindetail.Butroughnessisnottheonlypropertythataffectshealing.JohannaLöberghascomeupwithamethodthatdescribestheimplant'stopographyfrommicrometretonanometrescaleandallowstheoreticalestimationsofanchoringinthebonebydifferentsurfacetopographies.Themethodcanbeusedinthedevelopmentofnewdentalimplantstooptimisethepropertiesforincreasedboneformationandhealing.Shehasalsostudiedtheoxide'sconductivity,andtheresultsshowthataslightlyhigherconductivityresultsinabettercellresponseandearlierdepositionofmineralsthatareimportantforboneformation.TheresultsareinlinewithanimalstudiesandclinicaltrialsofthecommercialimplantOsseoSpeed(AstraTechAB),whichshowaslightlyhigherconductivityfortheoxideandalsoanexchangebetweenhydroxideandfluorideonthesurfaceoftheoxide.Surfaceswithawell-definednanostructurehavealargeractiveareaandrespondquicklytothedepositionofbone-formingminerals.TheprojectisacollaborationbetweentheUniversityofGothenburgandAstraTechABinMölndal,andwillbefurtherevaluatedinfollow-upstudies.ThethesisIntegratedBiomechanical,ElectronicandTopographicCharacterizationofTitaniumDentalImplantswassuccessfullydefendedattheUniversityofGothenburg.。

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