Dental Radiography DEA 125
Popular in Course
Popular in Dentistry
This 47 page Class Notes was uploaded by Courtney Johnston on Monday October 12, 2015. The Class Notes belongs to DEA 125 at Front Range Community College taught by Staff in Fall. Since its upload, it has received 43 views. For similar materials see /class/221859/dea-125-front-range-community-college in Dentistry at Front Range Community College.
Reviews for Dental Radiography
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 10/12/15
Lesson 1 Review Exercise Series DO NOT ll in the owing until you are instructed to do so in the audiovisual presentation Review Exercise A States of matter atoms elements molecules and compounds Completion Give a short concise statement or a word to complete those questions with blanks 1 List four of the important properties of the gas state a b c d 2 List four of the important properties of the liquid state a b c d 3 List three of the important properties of the solid state a c d 4 The is the tiny fundamental particle of all matter 5 Write the name of the parts and particles of the illustrated helium atom in the blanks F1957 oos JD DEA 125 Radiology Workbook 1 6 Complete the following for the protons a Located in the of all atoms b Have a charge 7 Complete the following for the electrons a Located in the b Have a charge 8 For the neutral atom the number of equals the number of 9 Complete the following for the neutrons a Located in the b Charge is c Have a mass approximately the same as the 10 Write a definition of an element 11 a How many elements are known b How many of these are manmade 12 Answer the following questions about the box from the periodic table a The number 20 is the number or the 2 0 number b Ca is the symbol ofthe element whose name is Ca c 4008 is the of 40 this element d The number of protons in the nucleus is e The number of electrons in the shells is 605 JD DEA 125 Radiology Workbook 2 13 Write a de nition of a 39 r 14 De ne a molecule 15 What is the charge on a molecule 16 Write the correct chemical name for the compound whose formula is CaSO4 39 2HzO 17 What is the name of the mineral which contains CaSO4 39ZHZO There are 40 blanks Each blank is worth 25 points If you missed more than 8 blanks your grade if less than 80 End of Review Exercise A Review Exercise B History terms production and properties of Xrays Completion l E 4 V39 Dr Wilhelm Conrad discovered Xrays on when he was a professor of physics at the University of W rzburg Germany Dr Otto a dentist in Braunschweig Germany produced the first in December of the year The first intraoral radiograph was made by Dr Edmund OvereXposure to Xrays contributed to the early death of Dr Write a brief description for each of the following terms a Radiology Roentgenology 605 JD DEA 125 Radiology Workbook 3 b Radio graph c XRays d Film e Exposure 6 Brie y describe how Xrays are produced 7 In the Xray tube both Xrays and a tremendous amount of are produced 8 Xrays are an invisible high energy wave from which are a part of the 9 Three radiations which have more energy than Visible light are and 10 Two radiations which have less energy than Visible light are and 11 The high point ofa wave is called the 12 The speed at which Xrays travel through space and matter is called the speed of and is miles per second or 605 JD DEA 125 Radiology Workbook 4 cm per second LA Xrays have a higher than visible light but the same 4 Write a brief description of wavelength UI Wavelength is measured in units ON When the distance between the crests for an electromagnetic radiation such as Xrays is small the wavelength is circle correct ones long short the energy is small great and the rays are more less penetrating l Write a brief de nition of frequency 00 As the wavelength becomes shorter the frequency becomes circle correct one lower higher O List the ten important characteristics of Xrays a b There are 43 blanks Each blank is worth approximately 23 points If you missed more than 8 blanks your grade is less than 80 605 JD DEA 125 Radiology Workbook 5 End of Review Exercise B Review Exercise C Ionization roentgen effects Completion l Xrays can be measured and detected because they produce when they penetrate air or other matter 2 Brie y describe the production of ion pairs 3 The ion pair which forms when Xrays strike a helium atom consists of the and 4 The symbol R means and the symbol mR means 5 How many mR equal one R 6 Write a brief description of the radiation absorbed dose rad 7 Write a brief definition of the roentgen eguivalent man rem 8 Brie y describe how the energy in Xrays affects the body cells There are 10 blanks Each blank is worth ten points If you missed more than 2 blanks your grade is less than 80 End of Review Exercise C 605 JD DEA 125 Radiology Workbook 6 Answers to Review Exercise A 8 protons electrons 1 a ows freely 9 b low dens1ty c easy to compress a39 1111016115 d has no surface b neutral zero c proton 239 10 A substance whose atoms have the same a39 ows number of rotons b medium density p c difficult to compress d h rf 1 139 as a su ace a 105 3 b 17 a medium to high density b ver difficult to com ress 1239 39 y p a Z atomic atomic Z c has a r1g1d surface b Calc1um 4 atom c Atom1c we1ght d 20 539 e 20 a electron 39 b39 Shell 13 A substance composed oftwo or more c nucleus elements whose bas1c partlcle 1s a d proton molecule e neutron 14 A particle composed of atoms which are 6 chem1cally comb1ned a nucleus b39 posmve 15 neutral zero 7 a Shells 16 calc1um sulfate dehydrate b negat1ve 17 gypsum Answers to Review Exercise B 1 Roentgen November 8 1895 2 Walkhoff dental radiograph 1895 3 Kells 4 Kells 5 a the science or study of radiation as used in medicine b the recorded image produced by Xrays on photographic film c high energy radiation produced by an Xray tube d a transparent material covered with a photographic emulsion e act of making or exposing a radiograph by Xrays 6 Xrays are produced when high speed electrons are slowed or stopped suddenly 7 heat 8 electromagnetic spectrum 9 Ultraviolet Xrays gamma rays alternate answer cosmic 10 infared microwaves alternate answer radio waves 605 JD DEA 125 Radiology Workbook 7 19 HHHHHHHH wagww crest light 186000 3 X 1010 energy speed velocity distance between crests Angstrom short great more Number of crests passing a fixed point per second higher a higher energy waves b have no mass c neutral d speed is constant 186000 miles per second or 3 X 1010 cm per second e invisible f travel in straight lines g cannot be focused with a lens h adversely affect living tissue i affect photographic film j cause uorescence Answers to Review Exercise C QMerN lons ion pairs from when outer electrons are removed from atoms of matter by Xrays helium positive ion He electron e roentgen melliroentgen 1000 unit of absorbed energy per gram of absorbing material the dose of any ionizing radiation which produces the same effect in man as that from absorbing Xrays 8 The energy breaks the cell bonds and creates ion pairs This may be sufficient to kill the cell or change it enough so the cell does not act as it should 605 JD DEA 125 Radiology Workbook Lesson 1 Self Test 1 My Score Directions After you have completed all of the learning activity exercise series and feel that each lesson objective has been achieved then take this selftest Scoring will not affect your grade For this to have any value for you you should simulate actual test conditions when completing this test This is your opportunity to identify what you have mastered as well as possible de ciencies After you have completed this test check your answers with the answer sheet in the back of this lesson Even though a score of 80 is used to indicate success a score ofless than 90 indicates that you haven t truly mastered the material and it would be bene cial for you to review your weak areas before taking the final lesson evaluation Good luck Test There are 74 blanks Each blank is worth 14 points Spelling is important so correct any misspellings as you grade your test Completion 1 List the important properties of the 7 a 7 gas state b 7 liquid state c 7 solid state 605 JD DEA 125 Radiology Workbook 9 2 Complete the following by placing the words protons or electronss in the proper blank The nucleus of atoms contains the positively charged and the neutral Revolving about the positively charged nucleus are negative particles called In any atom the number of equals the number of The heaviest individual particle in an atom is the 3 Brie y de ne element 4 Answer the following questions about the box from the periodic table shown below a The Z or atomic number is b The atomic weight is 12 c The number of protons in the nucleus is Mg 24305 d The number of electrons in the shells is 5 Write a brief definition off aa r b a molecule 6 Write the correct chemical formula for calcium sulfate dehydrate 7 Write the correct chemical formula for the mineral gypsum 8 Place the names Kells Roentgen and Walkhoff in the proper blanks a Produced the first dental radiograph b Produced the first intraoral radiograph c Discovered Xrays 9 Write a brief definition for each of the following terms a Radiology Roentgenology 605 JD DEA 125 Radiology Workbook 10 b Radio g1pah c Xrays d Film e Exposures 10 Brie y describe how Xrays are produced 11 In an Xray tube both and a lot of are produced 12 Place the following radiations in the proper category with respect to their energy in relation to visible light gamma infrared microwaves radiowaves Xrays and ultraviolet 13 What is the value of the speed of light 14 Write a de nition of wavelength 15 What is the name and the symbol of the unit used to measure the wavelength of Xrays 16 Write a de nition of frequency 17 List the 10 important characteristics of Xrays a W999quot 605 JD DEA 125 Radiology Workbook 1 1 g h i 18 Radiations which have a high frequency will have circle correct words a high low energy and a long short wavelength 19 Xrays can be measured and detected because they produce when they penetrate matter 20 Write a brief de nition of the Roentgen unit 21 Write the full name and symbol of the other two units which in dentistry are considered equal to the roentgen Symbol I Name 22 Complete the following blanks using energy Xrays ion pairs and cells are high wave form When they strike the in the body they break bonds or produce as a result the no longer act as they should If you missed more than 7 blanks your grade is less than 90 End of Self Test 605 JD DEA 125 Radiology Workbook 12 Answers to SelfTest 1 a 1 ows freely 2 low density 3 easy to compress 4 has no surface b 1 ows 2 medium density 3 difficult to compress 4 has no surface c 1 medium to high density 2 very difficult to compress 3 has rigid surface proton neutron electrons electrons protons neutron a substance whose atoms have the same number of protons a 12 b 24305 c 12 d 12 a a substance composed of two or more elements whose basic particle is a molecule b a particle composed of atoms which are chemically combined CaSO4 X 2HzO CaSO4 X 2HzO a Walkhoff b Kells c Roentgen a the science or study of radiation as used in medicine b the recorded image produced by Xrays on photographic film c high energy radiations produced by Xray tube d a transparent material covered with a photographic emulsion e the act of making or exposing a radiograph by Xrays Xrays are produced when high speed electrons are slowed or stopped suddenly Xrays heat 186000 per or 3 X 1 cm per 605 JD DEA 125 Radiology Workbook 13 14 distance between crests 15 Angstroms A 16 number of crests passing a fixed point per second 17 a high energy waves b have no mass c neutral d speed is constant 186000 miles per second of3 X 1010 cm per second e invisible f travel in straight lines g cannot be focused with a lens h adversely affect living tissue i affect photographic lm j cause uorescence 18 high short 19 ionization alternate answer ion pairs 20 amount of radiation which produces a specific number of ions or ion pairs in a standard volume of air 21 I Name I Symbol I radiation absorbed dose I rad roentgen eguivalent man I rem 22 Xrays energy cells ion pairs cells 605 JD DEA 125 Radiology Workbook 14 Section A EEE EE EEEEEEE Section B EEEEEEE Section C EEE N N 1 Ni Lesson 2 Dental Radiography Xray Production and Radiographic Quality Lesson Objectives Identify the main components of an xray tube and discuss how each functions a List the three conditions necessary to produce xrays in the xray tube b List the two main parts of the cathode c List the metals used for the anode d Describe thermionic emission e Describe how lament current controls the quantity of xrays List the three exposure variables and describe their effect on the xray tube and on the emitted xrays a Define and describe the terms voltage and amperage b Describe the functions of stepdown and stepup transforms and identify where each is used c Explain how the wavelength of xrays are controlled d Describe impulses and convert impulses to seconds and seconds to impulses e Describe how mA and exposure time control the amount of xrays produced Describe differential absorption and formation of the latent image a Define radiopaque and list a tissue which is radiopaque b Define radiolucent and list a tissue which is radiolucent c Define latent image Define and describe primary leakage secondary and remnant radiation a Describe how secondary and scatter radiation is produced b Describe leakage and remnant radiations Define and describe radiographic density List primary controlling and in uencing factors a List factors which control density 605 JD DEA 125 Radiology Workbook 15 Review Exercise Series DO NOT ll in the following until you are instructed to do so in the audiovisual presentation Review Exercise A Xray tube exposure variables Completion Give a short concise statement or a word to complete those questions With blanks 1 998 of the kinetic energy of electrons in an Xray tube is converted to 39 the remaining 02 is converted to 2 List the three conditions Which are necessary to produce Xrays in an Xray tube a b c 3 The source of electrons in an Xray tube is the and 39 charge 4 The tungsten Wire in the cathode from Which electrons are emitted is called the 5 Name the indicated parts of the cathode 6 A high voltage source in the Xray tube shoves the electrons at a very high rate of speed from the circle correct words cathode anode to the cathode anode 7 Electrons have a negative charge and therefore are repelled from the circle correct words cathode anode and attracted to the cathode ano e 8 Xrays are produced at the circle one cathode anode 9 Write the name of the metal used for the indicated parts of an Xray tube in the proper blank a oos JD DEA 125 Radiology Workbook 16 20 21 22 23 24 25 26 The part of the anode which is struck by electrons is called the or the Xrays emitted from the anode pass through the of the sealed lead glass envelope Brie y de ne electric current What are the units of electric current Brie y de ne thermionic emission To increase the number of electrons emitted from the lament one must circle one increase decrease the current What adjustment on the Xray machine control panel controls the lament current If the current through the lament is increased by four times how much will this increase the amount of Xrays An electric current ows through a when the circuit is circle one open closed What are the units of the electrical force which causes electrons to move Brie y describe the purpose of the stepdown transformer A stepdown transformer will increase the 110 or 220 incoming line voltage to One kilovolt is equal to volts What adjustment controls the voltage of the Xray tube current When the voltage of the Xray tube current is increased the emitted Xrays have a circle correct words lower higher energy longer shorter wavelength and a lower higher frequency Which controls the wavelength of the Xrays the lament voltage or the Xray tube voltage Brie y de ne exposure time 605 JD DEA 125 Radiology Workbook 17 27 The common AC current in the Us is a cycle current 28 Calculate the following a 2 impulses sec e 30 impulses sec b 4 impulses sec f 160 sec impulses c 6 impulses sec g llO sec impulses d 15 impulses sec h 1 sec impulses 29 Which two exposure variables can be decreased to reduce the number or amount of xrays produced and 30 What factor must be increased to increase the penetrating power of the xrays There are 51 blanks Each blank is worth approximately 2 points If you missed more than 10 blanks your grade is less than 80 End of Review Exercise A 605 JD DEA 125 Radiology Workbook 18 Review Exercise B Differential absorption and types of radiation Completion 1 Brie y describe a Differential absorption b Latent images 2 Which tissues absorb more xrays tooth enamel or dental pulp 3 Brie y de ne radiopague 4 Brie y de ne radiolucent 5 Which areas appear light on a radiograph the radiopaque or radiolucent 6 What type pf xrays are produced whenever primary xrays interact with matter 7 Describe how scatter radiation is produced 8 Secondary xrays emitted from matter with a high atomic number will have circle one more less energy than those from matter with a low atomic number 9 Which have the higher average energy primary rays or secondary rays 10 List four types of radiation a c b d There are 14 blanks Each blank is worth approximately 77 points If you missed more than 2 blanks your grade is less than 80 End of Review Exercise B 605 JD DEA 125 Radiology Workbook 19 Review Exercise C Radiograph density controlling factors and calculating TFD Completion 1 Brie y de ne radiographic density A radiograph which has a low density is said to be The two factors which control density are and mAs is an abbreviation for Calculate the mAs for the following a 10 mA for 1 12 seconds mAs b 5 mA for 1 second mAs c 10 mA for 1 second mAs d 15 mA for 15 second mAs e 15 mA for 13 second mAs A radiograph which was exposed for three impulses or of a second was undereXposed To increase the density the operator used 6 times this exposure This would result in impulses or of a second A higher kV or kVp produces a radiograph which has a circle one higher lower density other factors remaining unchanged List three items which are used to control secondary radiation and reduce fogging a b c for extraoral films What do the following mean a TFD b SID c AFD d FFD Write the statement of the Inverse Square Law Write the equation for the Inverse Square Law 605 JD DEA 125 Radiology Workbook 20 The intensity of xrays at 10 inches is circle one Q 2 times as great as it is at 5 inches If a primary beam covers an area of 2 square inches at a distance of 10 inches what area will it cover at 20 inches A radiograph which was 6 inches from the anode will have circle one 2 times times the density as one which was at 12 inches Calculate the exposure times for the following situations Cone Length M kVp T seconds 8 10 mA 90 kVp 02 16 10 mA 90 kVp 8 15 mA 65 kVp 16 15 mA 65 kVp 1 There are 28 blanks Each blank is worth approximately 37 points If you missed more than 5 blanks your grade is less than 80 End of Review Exercise C 605 JD DEA 125 Radiology Workbook 21 Review Exercise D Radiographic contrast detail and controlling factors Completion 1 Brie y de ne radiographic contrast Use the following drawings which represent strips of exposed lm to answer questions 2 through 6 A C Which has no contrast Which has the M contrast Which has low contrast Which has short scale contrast Which has long scale contrast What is the primary controlling factor for contrast Xrays of high energy generally produce a radiograph which has a circle one lower higher contrast De ne the purpose of contrast What is the usual source of fogging List the three methods which will reduce fogging when using intraoral lms a b C What additional method will reduce fogging when using extraoral films oos JD DEA 125 Radiology Workbook 22 Brie y de ne radiographic detail or de nition List the four factors which in uence radiographic detail de nition a b c List two ways to minimize the effects of motion a b A small focal spot will result in circle one more penumbra A long OFD ObjectFilmDistance will produce circle one more penumbra T obtain a radiograph with the best detail the circle one OFD TFD should be as small as possible and the circle one OFD TFD as great as possible A ne grain lm will give the best detail and it will be a circle one slow speed lm There are 26 blanks Each blank is worth approximately 4 points If you missed more than 5 your grade is less than 80 End of Review Exercise D 605 JD DEA 125 Radiology Workbook 23 Answers to Review Exercise A 1 heat Xrays 26 length of time electrons are pushed across the tube gap or the length of time kVp is applied 2 a a source of electrons 27 60 b production of high speed electrons c a method of stopping these electrons 3 cathode negative 28 a 260 130 4 lament b 460 115 5 a focusing cup c 660 110 b lament d 1560 14 6 cathode anode e 3060 12 7 cathode anode f 1 8 anode g 6 9 a copper h 60 b tungsten 29 mA milliamp exposure time c tungsten 30 kV or kVp 10 target focal spot 11 window 12 ow of electrons through a conductor 13 amperes amps 14 boiling off of electrons from a heated lament 15 increase 16 mA milliamp 17 4 times 18 conductor wire closed 19 volts 20 It steps down the 110 or 220 volts of incoming line voltage to 3 to 5 volts for the lament current 21 50000 to 100000 volts 50 kV to 100 kV 22 1000 23 kV or kVp 24 higher shorter higher 25 Xray tube voltage 605 JD DEA 125 Radiology Workbook 24 Answers to Review Exercise B a different amounts of absorption attenuation by different tissue types b invisible image formed on photographic lm tooth enamel tissues with high absorption of Xrays tissues with low absorption of Xrays radiopaque secondary Xrays The primary ray interacts with an atom and loses some of its energy and continues in a different direction more primary a leakage b primary c secondary scatter d remnant 605 JD DEA 125 Radiology Workbook 25 Answers to Review Exercise C 1 degree of blackening on an Xray lm undereXposed mA milliamps T exposure time milliamperes seconds 5 O 1 5 1 3 5 DillGUN 360 120 18 1860 310l higher a collimation b lters c grids for extraoral lms a TargetFilmDistance b SourceImageDistance c AnodeFilmDistance d FocalFilmDistance The intensity of radiation is inversely proportional to the square of the distance from the source olnl nDz 0D2 1A 8 sq in 4 times a 08 b 025 14 sec 605 JD DEA 125 Radiology Workbook 26 Answers to Review Exercise D l the difference in densities between adjacent areas of a radiograph A B C B C kV or kVp lower make detail more clearly visible secondary radiation a ltration b collimation restricted beam c metal backing on lm grids the overall sharpness of images on a radiograph or the visibility of ne structural lines on a radiograph a motion b focal spot size c ObjectFilmDistance OFD d lm grain crystal size a prevent movement of the xray tube patient and lm during the exposure b use short exposure times less more OFD TFD slow 605 JD DEA 125 Radiology Workbook 27 Lesson 2 Self Test My score Directions A er you have completed all of the learning activities series and feel that each lesson objective has been achieved then take this selftest Scoring will not affect your grade For this to have any value for you you should simulate actual test conditions when completing this test This is your opportuni to identify what you have mastered as well as possible de ciencies A er you have completed this test check your answers with the answer sheet in the back ofthis lesson Even though a score of 80 is used to indicate success a score ofless than 90 indicates that you haven t truly mastered the material and it would be bene cial for you to review your weak areas before taking the nal lesson evaluation Good luck Test There are 58 blanks Each blank is worth approximately 18 points Spelling is important so correct any misspellings as you grade your test Completion 1 What percentage of the kinetic energy of the electrons striking the anode becomes Xrays 2 What are the three conditions necessary to produce Xrays in an Xray tube a b c 3 Name the parts of the diagrammed Xray tube oos JD DEA 125 Radiology Workbook 28 Electrons boil of the which is a part of the cathode and are shoved to the which has a charge Xrays are produced at the Which two parts of the Xray tube are made of tungsten to withstand the heat a b The ow of electrons through a conductor is the de nition of The units used to measure this are The process in which electrons are boiled off the lament is called Place the words high or low in the proper blanks to indicate the general nature of the amperage and voltage in an Xray tube I amperage I voltage I I Xray tube current I I I I Filament current I I I Place a check in the proper blank to indicate if the Quality or Quantity of Xrays is affected by the following exposure factors Calculate the exposure times for the following a 6 impulses sec b 10 impulses sec c 1 sec d 130 sec impulses impulses The ability of different tissues to attenuate Xrays by different amounts is the definition of Areas of high absorption of Xrays are circle one radiopague radiolucent radiation is a form of secondary radiation List four types of radiation Xrays a b c d The degree of blackening on an Xray film is the definition of 605 JD DEA 125 Radiology Workbook 29 An overexposed radiograph will have a circle one low density What are the two factors which control density a b Calculate mAs for the following a 5 mA for 15 second b 10 mA for 2 second mAs mAs If a radiograph is underexposed you should increase the exposure time at least by a factor of about times that which was use List three items used to control secondary radiation and fogging a b 0 Write the equation for the Inverse Square Law If the intensity at 6 is 80 mR what will it be at 12 mR If an Xray beam covers an area of 24 square inches at 10 inches what area will it cover at 5 inches Calculate the exposure time for the following situation I Cone length I mA I kVp I T seconds I 8 10 mA 65 kVp 16 10 mA 65 kVp 10 The difference in densities between adjacent areas of a radiograph is the de nition of Which diagram demonstrates high contra t a s b short scale contrast oos JD DEA 125 Radiology Workbook 30 28 List the four factors which in uence the detail or de nition of images on a radiograph a b C d 29 To obtain the least amount of penumbra a circle correct words small large focal spot and a long short OFD are required 30 Film with a large grain size will require a circle one longer shorter exposure time 31 The stepdown transformer steps down the 110 or 220 line voltage to about volts for the filament voltage If you missed more than 11 blanks your grade is less than 80 End of SelfTest 605 JD DEA 125 Radiology Workbook 31 Answers to SelfTest 1 02 2 a a source of electrons b production of high speed electrons c a method of stopping these electrons 3 a anode b cathode c focusing cup d lament e target focal spot 4 lament anode positive 5 anode 6 a target focal spot b filament 7 electric current amps amperes 8 thermionic emission 9 I amperage I voltage I I Xray tube current I low I high I I Filament current I high I low I 10 11 a 660 110 b 1060 16 c 60 d 2 12 differential absorption 13 radiopaque 14 Scatter 15 a leakage b primary c secondary scatter d remnant 605 JD DEA 125 Radiology Workbook 32 20 21 22 23 24 25 26 27 28 radio graphic density high a mA milliamps b T exposure time a 3 b 5 3 to 4 a collomation restricted beam b lters c metal backing on lm olnl nDz 0D2 20 6 square inches 025 radiographic contrast a C b A a motion b focal spot size c ObjectFilmDistance d lm grain crystal size small short shorter 3 to 5 volts 605 JD DEA 125 Radiology Workbook 33 DEA 125 Dental Radiology I Unit RADIATION IN DENTAL PRACTICE Learning Activities Chapter 1 OBJECTIVES Upon completion of this unit and written examination 75 accuracy the dental assisting student will 1 2 W 5 U 9 gt1 00 List important names and dates in the history of dental radiography Demonstrate appreciation of the history of radiation and dental radiology by identifying the early pioneers Track the progress of radiography from its discovery to the present Identify techniques that have helped to make Xray safe and reliable diagnostic tool Name the party that has ownership of Xrays taken in a dental of ce and explain fees assigned to radiographs Name party responsible for diagnosing radiographs Identify the most important use of dental radiography in dental practice De ne related terminology Bisecting Technique Cephalometric radiograph Cone Dental radiography Digital imaging Panoramic radiography Paralleling technique Position indicationg device PID Radiation protection Radiograph Radiography Roentgenograph Roentger ray Tomography XRay 605 JD DEA 125 Radiology Workbook 34 DEA 125 Dental Radiology I Unit INIERPROXIMAL OR BITEWING EXAMINATION PARALLELING Learning Activities Work Book Unit 7 TeXt Chapter 19 7 pgs 299320 OBJECTIVES Upon completion of this unit and written examination with 75 accuracy the dental assisting student will 1 2 EXplain the purpose of bitewing radiographs Identify areas of the mouth to be surveyed for BW radiographs EXplain the difference between periapical and interproximal radiographs Identify lm sizes used for bitewing radiographs Describe basic positioning of the patient for interproximal eXposures List correct vertical and horizontal angles used for bitewing eXposures EXplain advantages and disadvantages of different lm sizes used for interproximal eXposures Assemble XCP eXtension cone paralleling device Demonstrate ability to correctly mount bitewing radiographs De ne related terminology Angulation Angulations horizontal Angulations vertical Bitewing Bitewing vertical 605 JD DEA 125 Radiology Workbook 3 5 Bitewing tab Bone aveloar Bone crestal Caiies Contact areas Contact areas Edentulous Film Film holder XCP Film placement Interproimal 605 JD DEA 125 Radiology Workbook 36 Periapical Torus 605 JD DEA 125 Radiology Workbook 37 Bitewing or Interproximal Examination Chapter 116 Work Study Sheet 1 What is the paralleling technique 2 Another name for the paralleling method is 3 What tooth surfaces do a BW show 4 Bitewing radiographs do NOT show the 777 7 7 5 List four 4 advantages of the paralleling technique 6 List four 4 disadvantages to the paralleling technique 7 List basic rules ofthe exposure routine 8 List the part ofXCP BW lm holder 605 JD DEA 125 Radiology Workbook 3 8 What other device could be used to hold lm for a BW What is the chair position for premolaramolar BW s What is the lm position for a premolar BW s b molar BW s Vertical angulation for BW lm is Horizontal angulation for BW lm is What error will result with improper horizontal angulation What is a vertical bitewing How does the technique for vertical BW s differ from XCP paralleling or tab bisecting What size lm is generally used for bitewing survey a adult b pedo c other How many lms are generally used for a bitewing survey 605 JD DEA 125 Radiology Workbook 39 19 Who discovered the Xray 20 Who has the responsibility to diagnose the radoiograph 21 What is the most important use of radiography in the dental practice 22 Who is known as the father of the science of radiation protection 605 JD DEA 125 Radiology Workbook 40 EV ELLUSTHATIONS 1 Big Wblrl label the componean in his dia m Ufa atom 39 j L Fig wblE Identify the lCtichd Components in this dixgmm of he ubc39hcad of a dental x mm b c a 8 e b 2 Fig WbIZ Identify the lettered components diagram of the dental xrray tube and List 11 Fig wb1 439 In his schemmic drawing pf 11 hls b the function of en dental xmys which may a or we b c a has the longest wavelength 39 b has the most energy d c has the higher frequency d would be mom penetmuing 605 JD DEA 125 Radiology Workbook 41 DEA 141 Dental RadiologyI Unit CHARACTERISTICS OF RADIATIONTECHNICAL ASPECTS Learning Activities Dental Radiography for Dental Assistants and Hygienists Chapters 2 3 and 4 2 3 and 4 Slide Series 7 Lesson 1 and 2 WorldStudy Sheet Dex lm OBJECTIVES Upon completion of this unit and written examination with 75 to 100 accuracy the dental assisting student will 1 List the three states of matter and properties of each state 2 Differentiate the various atomic and molecular structures important to radiography 3 Describe the production of xrays 4 List properties and characteristics of xrays 5 Compare xray wavelength to its penetrating power 6 Identify the main components of an xray tube and discuss how each functions 7 List conditions necessary to produce xrays in the xray tube 8 List two main parts of the cathode 9 List the metals used for the anode 10 Describe thermonic emission 11 Describe how lament current controls the quantity of xrays 12 List exposure variables and describe their effect on the xray tube and on the emitted xrays 13 Describe the functions of stepdown and stepup transformers and identify where each is used 14 De ne radiopaque and list structures which appear radiopaque 15 De ne radiolucent and list structures which appear radiolucent 16 Describe and calculate effects of Target Film Distance 17 Explain the Inverse Square Law 18 Identify in sequence the steps that must be followed in operating the dental xray machine 19 Identify the basic requirements of an acceptable diagnostic radio graph 605 JD DEA 125 Radiology Workbook 42 DEA 125 Radiology I Unit Introduction to xray Physics Learning Activities SlidetapeDental Radiology Intro to Physics SlidetapeDental J39 39 Dental J Unit Objectives Production and Oualitv I Principles and T 39 Haring Jansen At the completion of this unit the student will with at least a 75 accuracy on a written and or oral exam 1 2 3 4 5 6 7 Outline 1 II III Differentiate various atomic structures important to radiography Differentiate various molecular structures important to radiography Compare xray wavelengths to penetrating power Identify types of radiation capable of causing ionizing in body tissue Identify the common characteristics of radiation Name at least three pioneers in the eld of radiation Explain the signi cance of these pioneers in radiation History of Radiology A Dr Wilhelm Roentgen B Dr Otto Walkhoff C Dr Edmond Kells D Dr William Rollins E William D Coolidge Terms A Radiology B Xray C Radiograph D Exposure Matter A Three Types of Matter 1 Gas 2 Liquid 3 Solid B Gas C Liquid D Solids 605 JD DEA 125 Radiology Workbook 43 IV Composition of Matter A Atom B Element C Molecule D Compound V Atomic Structure VI Concerns about the production of Xrays VII Characteristics of the Electromagnetic Spectrum VIII Characteristics of Xrays A Higher levels of the electromagnetic spectrum B Lower levels of the electromagnetic spectrum C Xray wave lengths IX Wave Form A A means of measurement B Travels like a wave of water X Review of Characteristics XI Parts of an Xray tube A Cathode B Anode XII Production of Xrays A Source of electron B High speed of electrons C Sudden stopping of electrons XIII Electricity and Electrical Current A Amperes B Voltage C Transformers D Timer 605 JD DEA 125 Radiology Workbook 44 XIV Principles of Xray tube operation A Time delay B When the high speed electrons are suddenly stopped they give off 99 heat and 1 radiation Tungsten lament Copper and oil Window Port Aluminum disc QWWUO XV Types of radiation A Primary B Use ll C Secondary D Scatter E Leakage XVI Radiographic Qualities Filtration Collimation Density Contrast De nition Radiopaque Radiolucency mmwpowgt 605 JD DEA 125 Radiology Workbook 45 Key Terms Chapter 2 Actual focal spot Alternating current AC Ammeter Amperage Ampere A Anode Autotransformer Cathode Central ray Collimator Control panel Deadman switch Direct current DC Duty cycle Effective focal spot Electrical circuits Electricity Electrode Extension arm Filament Filter Focal spot Focusing cup Halfvalue layer HVL Impulse Incandescence Intensity Key Words Chapter 3 Absorbed dose Absorption Alpha particle Angstrom A Atom Background radiation Beta particle Bremsstrahlung radiation Characteristic radiation Coherent scattering Compton effect scattering Coulombs per kilogram Ckg Decay Dose equivalent Electromagnetic radiation Electromagnetic spectrum Electron Element Energy levels 605 JD DEA 125 Radiology Workbook 46 Kilovolt kilovolt peak kVp Linefocus principle Line switch Milliampere mA Port Primary beam Quality Quantity Radiator Rectification Selfrectifying Stepdown transformer Stepup transformer Target Thermionic emission Time delay Timer Transformer Tube head Voltage Voltmeter Xray tube Yoke Hard radiation Ion Ionization Ionizing radiation Ion pair Isotope Kinetic energy Molecule Neutron Particulate radiation Photoelectric effect Photon Proton Rad Radiation Radiolucent Radiopaque Rem Roentgen
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'