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ch 41
DEN211 Chapter 41 Workbook Assignment
| Term | Definition |
|---|---|
| Why is it not recommended to have the patient hold the image receptor during exposure? | The patient receives unnecessary radiation. |
| What film size is used in the occlusal technique for an adult? | 4 |
| What film size is recommended for a pediatric patient with all primary dentition? | 0 |
| A 90-degree angle formed by two lines perpendicular to each other is a _______________. | right angle |
| Which exposure technique do the American Academy of Oral and Maxillofacial Radiology and the American Dental Education Association recommend? | Parallel |
| The _______________ is the central portion of the primary beam of radiation. | central ray |
| What technique is used for exposing dental images? | Both parallel and bisection |
| The _______________ is an imaginary line that divides the tooth longitudinally into two equal halves. | long axis of the tooth |
| Two things are _______________ if they intersect at or form a right angle. | perpendicular |
| The bone that supports and encases the roots of the teeth is the _______________. | alveolar bone |
| ____________ means cutting across or through. | Intersecting |
| What is a good diagnostic quality image for endodontics? | One that allows you to see 5 mm beyond the apex |
| The _______________ is an intraoral technique of exposing periapical images in which the teeth and the image receptor are parallel to each other. | paralleling technique |
| What type of film holder can be used in the bisecting angle technique? | BAI EeZee Grip Stabe All answers are correct |
| Why is it important to avoid retakes? | To avoid unnecessary radiation exposure |
| Why is an exposure sequence important? | So all areas of the mouth are included and images do not have to be retaken |
| For partially edentulous patients, how can you modify the technique for using a bite-block? | Use a cotton roll |
| Which exposure should be the first for the posterior regions? | Maxillary premolar |
| Dental images with the proper landmarks and optimum density, contrast, definition, and detail have good _______________. | diagnostic quality |
| When you are exposing films for a pediatric patient, what analogy can you use to describe the tubehead? | Camera |
| The _______________ is the coronal portion of alveolar bone found between the teeth. | crestal bone |
| _______________ is the term that is used to describe a space between two adjacent surfaces. | Interproximal |
| When are occlusal radiographs indicated? | To show a wide view of the arch |
| A(n) _______________ is the type of image used for the interproximal examination. | bitewing |
| When radiographs are mounted using the labial mounting method, where is the dot placed? | Facing up |
| Which of the following can occur when the vertical angulation is incorrect? | Both elongation and foreshortening |
| What error occurs when the horizontal angulation is incorrect? | Overlapping |
| The _______________ is an intraoral technique of exposing periapical images in which the film and the teeth create an angle that is bisected by the beam. | bisection of the angle technique |
| What vertical angulation should be used for bitewing images? | +10 degrees |
| What is the purpose of bitewing images? | To view the interproximal surfaces |
| An object is _______________ if it is moving or lying in the same plane and is always separated by the same distance. | parallel |
| In the bisecting angle technique, how is the image receptor placed in relation to the teeth? | Close to the teeth |
| When you are exposing images, in which area of the mouth should you begin? | Maxillary anterior |
| What changes must be made in the exposure factors when dental images from a pediatric patient are exposed? | Exposure factors must be reduced. |
| An area of a tooth that touches an adjacent tooth in the same arch is the _______________. | contact area |
| Where would you begin making exposures for a patient with a severe gag reflex? | Mandibular anterior |
| Why is it important for the dental assistant to recognize normal anatomic landmarks? | For mounting of x-ray films |
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