Detection of Class II caries on the iPad with Retina Display

Self-Instruction Exercise No. 996
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Exercise No. 996
Subject Code: 562
Digital/Video Imaging

The 15 questions for this exercise are based on the article, Detection of Class II caries on the iPad with Retina Display. This exercise was developed by Anthony S. Carroccia, DDS, MAGD, ABGD, in association with the General Dentistry Self-Instruction committee.

Reading the article and successfully completing this exercise will enable you to:

  • identify the testing parameters;
  • recall radiographic principles; and
  • understand the effects of display specifications and conditions on the appearance of digital radiographs.

Answers for this exercise must be received by June 30, 2016.
  1. Which of the following is considered the standard of care in proximal caries detection?

    A. visual inspection
    B. infrared transillumination
    C. bitewing radiographs
    D. laser fluorescence

  2. All of the following are reasons to account for the increased interest in tablet devices in a dental practice except one. Which is the exception?

    A. availability
    B. portability
    C. ease of use
    D. self-cleansing ability

  3. The study used ____ digital images of _____ extracted teeth.

    A. 13; 300
    B. 13; 330
    C. 30; 313
    D. 30; 330

  4. The digital images were acquired with a _____ system.

    A. Dexis Platinum
    B. Gendex GXC 300
    C. Sirona CDR
    D. SuniSuniray

  5. A mean pixel gray value of ______ in dentin yielded an image density that corresponds to an ideal film radiograph.

    A. 17
    B. 70
    C. 117
    D. 170

  6. The rigid acrylic optical bench allowed for variation in image quality due to angulations. The object-to-sensor and source-to-sensor distances were varied exponentially by location.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false.

  7. All of the following displays were used except one. Which is the exception?

    A. iPad with Retina Display in a standing position
    B. iPad with Retina Display in an angled position
    C. thin-film transistor flat-panel display (TFT-FPD) Dell Ultrasharp U2312HM
    D. TFT-FPD Dell Ultrasharp U3415W

  8. The TFT-FPD was set at an angle of ____ degrees.

    A. 40
    B. 70
    C. 90
    D. 120

  9. When viewing, examiners were allowed to adjust the iPads. Viewers were also allowed to adjust their positions and/or postures.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false.

  10. All of the following are on the confidence scale of caries detection except one. Which is the exception?

    A. definitely no caries
    B. possibly no caries
    C. undecided
    D. probably carious

  11. Which teeth were to be evaluated for this study?

    A. second molars, first molars, second premolars, and first premolars
    B. first molars, second premolars, and first premolars
    C. first molars, second premolars, first premolars, and canines
    D. second premolars, first premolars, and canines

  12. Upon histological examination of the lesions, the examiners agreed on caries 94.51% of the time. Disagreements over lesion depth usually exceeded 1 zone.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false.

  13. The reviewers were classified at 2 levels of experience: _____ years or ____ or more years.

    A. 4, 14
    B. 4, 24
    C. 6, 14
    D. 6, 24

  14. Due to the ______________ of the iPad display, glare could be the reason that areas of interest may not be visualized in the angled position.

    A. high responsiveness
    B. high reflectivity
    C. low resolution
    D. low contrast

  15. There were no significant differences between the __________ and the _____________.

    A. iPad in a standing position, TFT-FPD
    B. iPad in a standing position, iPad in an angled position
    C. iPad in an angled position, TFT-FPD
    D. iPad in either position, TFT-FPD

Evaluation
Please respond to the statements below, using the following scale:
1 Poor; 2 Below average; 3 Average; 4 Above average; 5 Excellent
Practicality of the content 1 2 3 4 5
Benefit to your clinical practice 1 2 3 4 5
Quality of illustrations 1 2 3 4 5
Clarity of objectives 1 2 3 4 5
Clarity of exercise questions 1 2 3 4 5
Relevance of exercise questions 1 2 3 4 5
 
Did this exercise achieve its objectives? Yes No
Did this article present new information? Yes No
How much time did it take you to complete this exercise? mins

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