equipment牙科椅_痰盂缸_器械盘 三用喷枪 牙钻ppt课件

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1、DentalEquipment演讲者：孙宗亮PPT制作及资料：秦辰燕蔡芸芸张彬牙科椅痰盂缸器械盘三用喷枪牙钻AbstractPartsofDentalEquipmentNEWDentalEquipmentSelfDeliveryCartUNITHandpieceDentaldrillPartsofDentalEquipmentcottonforceps（棉钳）Endodontic-Syringes牙髓注射器DiagnosticHandInstrumentShadowlesslamp无影灯NEWDentalEquipmentSelfDeliveryCartUNITHandpieceBasicd

2、isposition3-waysyringeSalivaejectorCleanwatersystemPiezoUltrasonicScalerLedcuringlightDentaldrillAdentaldrill(ordentist‘sdrill)isasmall,high-speeddrillusedindentistrytoremovedecayedtooth(龋齿)materialpriortotheinsertionofadentalfilling.Theyareoftenmadeofsteelwithatungstencarbide(硬质合金)coating,oroftung

3、stencarbideentirely.Theburmayalsohaveadiamondcoating.ContentsHistoryPrincipleSpeedOtherusesHistoryModernreplicaofthedentaldrillsuncoveredatMehrgarh(梅赫爾格爾)(7000-5000BCE).Thisearliestformofdentistryinvolvedcuringtoothrelateddisorderswithbowdrills-operated,perhaps,byskilledbeadcraftsmen.In1864,British

4、dentistGeorgeFellowsHarringtoninventedaclockworkdentaldrillnamedErado.ThedevicewasmuchfasterthanearlierdrillsThemodernincarnationofthedentaldrillistheairturbine(涡轮)handpiece,developedbyJohnPatrickWalsh(laterknighted)andmembersofthestaffoftheDominionPhysicalLaboratory(DPL)Wellington,NewZealand.Speed

5、MostairdrivenHi-SpeedHandpiecesrunat380-450KRPMwithnoload,andunderloadthecuttingspeeddropstoaround20KrpmPrinciple（airdrivenHi-SpeedHandpieces）气蜗流牙钻车头柄壳体内有两根管子，一路进气，一路进水，要排出的气体就从壳体的空隙中出来；车头内部有风轮，轴承，轧头，进气管路，排气管路，冷却水管等组成，压缩空气有进气管路进入车头后推动风轮转动，然后从排气路逸出车头外，轧头装在风轮之间，夹持车针随风轮一起旋转。车头下端的两个孔是喷射冷却水的，以防高速切削时烧灼牙齿

6、，为了能更好地达到冷却目的，要求从喷水孔喷射出的水汇聚于车头的端点。OtherusesDentaldrillsanddrillbitsarecommonlyusedbyjewellersandhobbyistsforhigh-precision(高精度)drillingwork.Referencehttp://en.wikikipedia.org/wiki/Dentaldrillhttp://www.bharatbook.com/Market-Research-Reports/Dental-Products-in-China-Forecasts-to-2012-and-2017.htmlht

7、tp://www.kabdental.com/small-dental-equipment/miltex_instruments_and_products/miltex_dental_instruments.htmThankYou