牙科放射線學ppt课件.ppt
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1、牙科放射線學ppt课件 Still waters run deep.流静水深流静水深,人静心深人静心深 Where there is life,there is hope。有生命必有希望。有生命必有希望學 習 目 標2.Eric Whaites:Essentials of dental radiography&radiology 1st edition,Chapter 8,p.59-771.Eric Whaites:Essentials of dental radiography&radiology 3rd edition,Chapter 8-10,p.75-116References:知道口
2、內片攝影術的名稱知道口內片攝影術的名稱了解口內片攝影術的適應症了解口內片攝影術的適應症明白口內片攝影術的方法明白口內片攝影術的方法3.Newman ME&Friedman S:Extraoral radiographic technique:An alternative approach.J Endod 2003;29:419-214.Kaohsiung Medical University,Oral Pathology Department Film&tooth parallel&in contactIdeal positioning Parallel X-ray beam meeting
3、both the tooth&film at right anglesRef.1 For film&tooth to be parallel they must placed some distance apart Film&tooth parallel&in contactIdeal positioning Parallel X-ray beam meeting both the tooth&film at right anglesRef.1Paralleling techniqueFilm&tooth parallel&in contactIdeal positioning Paralle
4、l X-ray beam meeting both the tooth&film at right anglesShortspacerconeDivergingX-ray beam Magnification of the imageLongspacerconeNear parallelX-ray beamMinimal magnificationof the imageRef.1Paralleling techniqueAnteriorPosteriorMetal supportingindicator rodWhite locator ringBite blockBite blockPat
5、ient positioningMaxillary incisorPositioningMaxillary incisorRef.2Paralleling techniqueAnteriorPosteriorMetal supportingindicator rodWhite locator ringBite blockBite blockMaxillary caninePatient positioningMaxillary caninePositioningRef.2Paralleling techniqueMaxillary premolarPatient positioningPosi
6、tioningMaxillary premolarAnteriorPosteriorMetal supportingindicator rodWhite locator ringBite blockBite blockRef.2Paralleling techniqueAnteriorPosterior Metal supporting indicator rodWhite locator ringBite blockBite blockMaxillary molarPatient positioningMaxillary molarPositioningRef.2Paralleling te
7、chniqueAnteriorPosteriorMetal supportingindicator rodWhite locator ringBite blockBite blockMandibular incisorPatient positioningMandibular incisorPatient positioningRef.2Paralleling techniqueAnteriorPosteriorMetal supportingindicator rodWhite locator ringBite blockBite blockMandibular canineMandibul
8、ar caninePatient positioningPositioningRef.2Paralleling techniqueAnteriorPosteriorMetal supportingindicator rodWhite locator ringBite blockBite blockMandibular premolarPatient positioningMandibular premolarPositioningRef.2Paralleling techniqueAnteriorPosteriorMetal supportingindicator rodWhite locat
9、or ringBite blockBite blockPatient positioningMandibular molarPositioningMandibular molarRef.2Paralleling techniquePosterior tooth橫橫 放放橫橫 放放左上、右下左上、右下 象限象限右上、左下右上、左下 象限象限Anterior tooth直直 放放upperAnterior tooth直直 放放lowerRef.4Paralleling technique高雄市牙醫師公會資料高雄市牙醫師公會資料Paralleling techniqueFull mouth X-ra
10、y filmsLeftPremolarsRightPremolarsPremolarsMolarsMolarsBitewingBitewingBitewingBitewingUpperLowerIncisorsIncisorsCanineCanineCanineCaninePremolarsMolarsMolarsRef.4Alveolar bone levelis not accurateVertical angulation too smallRef.1Horizontal angle正正 照照 想想 要要 照照 的的 牙牙 齒齒Upper archLower archAnterior t
11、eeth2-3mm beyondthe incisal edgeLong axisof thefilmpacket verticalLong axis of the filmpacket horizontalPosterior teeth2-3mm beyondthe occlusal edgeRef.1Bisecting angle techniqueMaxillary caninePatient positioningVertical angle Maxillary incisorPatient positioningVertical angleRef.2Bisecting angle t
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