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radiation protection in dentistry

Learn how to protect patients, colleagues, and the environment from radiation exposure in dentistry. Understand equipment, distance protection, and licensing regulations. Follow best practices for maintaining and controlling radiation levels.

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radiation protection in dentistry

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  1. radiationprotection in dentistry Dr. Krisztián Csomó

  2. Whatare we protecting? • Patient • Ourselves • Colleagues • Environment

  3. The 3 bases of radiationprotetcion • Reasonable • Benefit > Risk • Optimization • ALARA (AsLowAsReasonablyAchievable) • Doselimitation

  4. Equipment • Dentist and staff • Service and controll • ALARA • Staffprotection • Patientprotection

  5. Dentist and staff • Protectyourself! • Distanceprotection • Protectingwall • Never hold the film in yourownhands!!!!!!

  6. Distanceprotection • The intensity of radiation is in reverseproportiontothedistancesquared • Useable in placeswhereonly a fewpicturesare made (max 50 per week) • The minimaldistance is 2 meters (preferably 3 m) • The personaccompanying a minor can’t be pregnant, orunder 18, also has towear a protectingsuit!

  7. Protectingwall • The bestoption: Protectedcabin • The wallcan be made of: • brick • concrete • Lead betweenwoodenplates • In case of lowcirculation: protectingwall • Atleast 1.5 m fromthefocus of the X-raymachine • Atleast 2 m high • Atleast 0.7 mm lead-equivalent • Ateye-level: 600 cm2 1 mm lead-equivalent lead-glasswindow

  8. Licensing • Standardized, givenbytheHungarianhealth and safetyboard (ANTSZ). • It is PROHIBITED totake an X-raywithout a permit!

  9. Whatprotectsthepatientprotectsthestaffaswell • The X-ray image must be justified • The persontakingthepicture must be welltrained, must haveadequateskills and nottakeunnecessaryrepeats • The chosentechnique must: • Be quick • Havethelowestachievableradiationdose • Be targeted • Be ableto be storedforfuturereference • Filmholder • Headchair • Sensitive film – digitalradiography • Knowingthelimits of ourpatient – anatomicalaswellasmentallimits • Lead apron • Use of a tube of adequategeometry

  10. Equipment We havetochoose: • Which is the most ideal X-raymachineforourpurposes • What is ourpurpose: • The lowestachievableradiationdose • The highestachievable image quality • A lowerdose of diffuseradiationcanusually be achievedusing modern equipment • Howdoesthedigitalsystemhelp?

  11. Radiationprotection in regards of digitalradiography • The radiationdose is lowercomparingintraoralimages • Can be storedelectronically, imagesareeasilymultiplied and thereby no needfor re-takes • The benefits of thesoftware: • No needfor re-takes • Over- orunderexposedimagescan be salvaged • The contrast and thedefinitioncan be modified

  12. Maintenance and control • Optimallocalization • Maintenanceevery 2 years (the program is abletomeasurethis) • Radiation and electricinsulationneedsto be controlledregularly • The expositionvalueneedsto be standardized • Keeptrack of theamortization!

  13. Always monitor yourownradiationexposure! • It is very important toknowthedoseyouhavebeenexposedtoconsideringthestochasticeffetcts!

  14. Protectionquantities • Minorsarenotallowedtowork in a radiatingenvironment • Pregnantcolleague! The fetus is entitledtotheresidentiallevels of exposure!

  15. Control of theoccupationalexposure • 1. Measuring • 2. Registration, summarization, control (every 3 months) • 3. Protectionmeasurements

  16. Measuring • Termoluminescent-dosimeter (TLD) • (Film dosimeter) • Must be wornatalltimeswhileatwork!!!

  17. Thankyouforyourattention!

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