Questions and Answers
The ___ is an intraoral technique of exposing periapical images in which the teeth and the image receptor are parallel to each other.
paralleling technique
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
Dental images with the proper landmarks and optimum density, contrast, definition, and detail have good?
diagnostic quality
___ is the term that is used to describe a space between two adjacent surfaces.
Signup and view all the answers
A ___ is the type of image used for the interproximal examination.
Signup and view all the answers
The bone that supports and encases the roots of the teeth is the?
Signup and view all the answers
The ___ is the coronal portion of alveolar bone found between the teeth.
Signup and view all the answers
An area of a tooth that touches an adjacent tooth in the same arch is the?
Signup and view all the answers
An object is ___ if it is moving or lying in the same plane and is always separated by the same distance.
Signup and view all the answers
___ means cutting across or through.
Signup and view all the answers
Two things are ___ if they intersect or form a right angle.
Signup and view all the answers
A 90-degree angle formed by two lines perpendicular to each other is a?
Signup and view all the answers
The ___ is an imaginary line that divides the tooth longitudinally into two equal halves.
Signup and view all the answers
The ___ is the central portion of the primary beam of radiation.
Signup and view all the answers
What technique is used for exposing dental images?
Signup and view all the answers
Which exposure technique do the American Academy of Oral and Maxillofacial Radiology and the American Dental Education Association recommend?
Signup and view all the answers
Why is an exposure sequence important?
Signup and view all the answers
When you are exposing images, in which area of the mouth should you begin?
Signup and view all the answers
Which exposure should be the first for the posterior regions?
Signup and view all the answers
Why is it not recommended to have the patient hold the image receptor during exposure?
Signup and view all the answers
What type of film holder can be used in the bisecting angle technique?
Signup and view all the answers
What error occurs when the horizontal angulation is incorrect?
Signup and view all the answers
Which of the following can occur when the vertical angulation is incorrect?
Signup and view all the answers
In the bisecting angle technique, how is the image receptor placed in relation to the teeth?
Signup and view all the answers
What is the purpose of bitewing images?
Signup and view all the answers
What vertical angulation should be used for bitewing images?
Signup and view all the answers
What film size is used in the occlusal technique for an adult?
Signup and view all the answers
When are occlusal radiographs indicated?
Signup and view all the answers
For partially edentulous patients, how can you modify the technique for using a bite-block?
Signup and view all the answers
When you are exposing films for a pediatric patient, what analogy can you use to describe the tubehead?
Signup and view all the answers
What changes must be made in the exposure factors when dental images from a pediatric patient are exposed?
Signup and view all the answers
What film size is recommended for a pediatric patient with all primary dentition?
Signup and view all the answers
Where would you begin making exposures for a patient with severe gag reflex?
Signup and view all the answers
What is a good diagnostic quality image for endodontics?
Signup and view all the answers
When radiographs are mounted using the labial mounting method, where is the dot placed?
Signup and view all the answers
Why is it important for the dental assistant to recognize normal anatomic landmarks?
Signup and view all the answers
Why is it important to avoid retakes?
Signup and view all the answers
Study Notes
Intraoral Imaging Techniques
- Paralleling Technique: Involves positioning the teeth and image receptor parallel to each other for periapical images.
- Bisection of the Angle Technique: Film and teeth create an angle bisected by the X-ray beam for periapical imaging.
- Exposure Techniques: Both paralleling and bisection techniques are used for dental image exposure.
Image Quality
- Diagnostic Quality: Refers to dental images that display proper landmarks, density, contrast, definition, and detail.
Anatomy and Terminology
- Interproximal: Space between two adjacent tooth surfaces.
- Bitewing Image: Utilized for interproximal examinations.
- Alveolar Bone: Supports and encases the roots of teeth.
- Crestal Bone: Coronal portion of the alveolar bone located between teeth.
- Contact Area: Specific area of a tooth that touches an adjacent tooth in the same arch.
Geometric Relationships
- Parallel Objects: Items moving or lying in the same plane, maintaining consistent distance.
- Intersecting: The act of cutting across or through.
- Perpendicular: Two lines that intersect at a right angle.
- Right Angle: A 90-degree angle formed by two perpendicular lines.
- Long Axis of the Tooth: Imaginary line that divides a tooth longitudinally into equal halves.
- Central Ray: Central portion of the primary beam of radiation.
Exposure Protocols
- Importance of Exposure Sequence: Ensures comprehensive coverage of the mouth, reducing the need for retakes.
- Initial Exposure Areas: Begin with maxillary anterior, followed by mandibular premolar for posterior regions.
- Patient Holder Use: Avoid having the patient hold the image receptor to minimize unnecessary radiation exposure.
Tools and Techniques
- Film Holders in Bisecting Angle Technique: Options include BAI, EeZee grip, and Stabe.
- Horizontal Angulation Error: Incorrect angles result in overlapping images.
- Vertical Angulation Issues: Errors can lead to elongation or foreshortening of images.
Specialized Techniques
- Bitewing Image Purpose: Aimed at viewing the interproximal surfaces of teeth with a recommended vertical angulation of +10 degrees.
- Adult Occlusal Technique Film Size: Size 4 film used for adult occlusal radiographs.
- Indications for Occlusal Radiographs: Necessary for showing a wide view of the arch, assisting in dental evaluations.
Pediatric Considerations
- Bite-Block Modifications: Employ cotton rolls for partially edentulous patients.
- Film Size for Primary Dentition: Size 0 is recommended for children with all primary teeth.
- Exposure Factor Adjustments: Must be reduced for pediatric patients during imaging.
Managing Patient Discomfort
- Gag Reflex Consideration: Start exposures at the mandibular anterior region for patients with a severe gag reflex.
Endodontic Imaging
- Diagnostic Quality in Endodontics: An image must show 5mm beyond the apex for optimal assessment.
Film Mounting and Anatomic Awareness
- Labial Mounting Method: Dot on the radiograph should face up when mounted.
- Recognition of Anatomical Landmarks: Crucial for accurate X-ray film mounting and interpretation, helping prevent retakes and minimizing radiation exposure.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on intraoral imaging techniques with these flashcards from Chapter 41. Learn about methods such as the paralleling technique and the bisection of the angle technique. Perfect for dental students and professionals alike!
