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Dent 150 week 1
 

Dent 150 week 1

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    Dent 150 week 1 Dent 150 week 1 Presentation Transcript

    • Dent 150 Dental Radiology Roberta Brown, RDH MS Instructor
    • Learning ObjectivesSummarize the importance of dentalradiographyList the uses of dental radiographsBriefly summarize the discovery anddevelopment of x-radiationIdentify the pioneers in radiology, theircontributions and discoveriesDiscuss the knowledge and skillrequirements of the dental radiographer
    • More Learning Objectives…Define ‘radiation’, ‘x-radiation’, ‘radiograph’and ‘dental radiographer’Identify the differences between extraoraland intraoral radiographyIdentify the component parts of anintraoral dental x-ray machineDescribe the purpose and use of dental x-ray film holders and devices
    • A Little HistoryWilhelm ConradRoentgenNovember 8, 1895Accidental Created rays that caused materials to glow Traveled several feet Made first x-ray image “X” = unknownProfound implications
    • The First X-RayTaken ofRoentgen’swifeExposedfor 15MINUTES!
    • Dental RadiographyOtto Walkhoff– German Dentist– Intraoral radiograph on himself– 25 minute exposure timeEdmund Kells– First dental radiographs on live patientsWilliam H. Rollins– Radiation safetyHoward R. Raper– First university course on radiation for dental students (1909)
    • Unknown DangersExposure times werevery longNobody knew thedangersEarly pioneers in thefield suffered lose offingers, hands andlife
    • Dental Radiology
    • Radiology DefinitionsRadiation– A form of energy carried by waves or a stream of particlesX-radiation– High energy radiation produced by a beam of electrons colliding with a metal target in an x- ray tube
    • And More…Radiograph– A picture on film (photographic image) produced by the passage of x-rays through an object. In practice often called an “x-ray”Dental Radiograph– A photographic image produced on film by the passage of x-rays through teeth and related structures
    • Importance of Dental Radiographs Detection of disease processes View unseen clinical conditions Basic component of comprehensive care
    • Uses of Dental RadiographsDetection (lesions,disease)Confirmation ( duringtreatment)EvaluationClassify / IllustratechangesLocalize lesions/objectsDocumentation
    • Detection and Confirmation
    • Treatment Information
    • Confirmation of Completed Treatment Before After
    • Evaluation
    • Localize Lesions
    • Illustrate Changes
    • Documentation
    • Dental RadiographerAny person whoposition, exposesand processesdental x-ray filmTypically dentalassistant or dentalhygienist
    • Knowledge BaseBackground Information on radiographyRationale for the procedureExposure factorsManipulation of equipmentFilm placementPatient managementMethods of processing
    • Duties and ResponsibilitiesFilm placement, exposure and processingFilm mountingPatient educationDarkroom maintenanceQuality controlOrdering of film and supplies
    • Patient ProtectionLead apron with thyroidcollarFast filmAppropriate collimationLowest possible radiationexposure ALARAGood techniqueMeticulous handling ofthe film
    • Operator ProtectionAvoid primary beamMaintain adequate distanceNever hold a film in positionNever hold the tube head
    • X-Ray MachinesIntraoral
    • X-Ray MachinesExtraoral– Developed in the 1950’s
    • X-Ray MachinesModern Extraoral Machines
    • Parts of the X-Ray MachineExtension armControl boxTubehead Source of x-rays Heart of machine
    • The Tubehead
    • Beam AlignmentRound PIDRectangular Collimator
    • Film HoldersMany types toaccommodatedifferent techniques