Free DANB Dental Charting and Caries Classification Questions and Answers — Questions and Answers
Question 1: Using the Universal Numbering System, which tooth is designated as #25?
- Maxillary right central incisor
- Maxillary left central incisor
- Mandibular left central incisor
- Mandibular right central incisor (Correct answer)
Correct answer: Mandibular right central incisor
The Universal Numbering System numbers teeth 1-32 for the permanent dentition, starting with the maxillary right third molar (#1). Tooth #25 is the mandibular right central incisor, located in the lower right quadrant.
Question 2: A carious lesion located on the proximal surface of a posterior tooth is classified as:
- Class I
- Class II (Correct answer)
- Class III
- Class IV
Correct answer: Class II
G.V. Black's Classification system categorizes caries based on location. A Class II lesion involves the proximal (mesial or distal) surfaces of premolars and molars. These restorations often require an occlusal component for access.
Question 3: In the FDI World Dental Federation notation system, the number 34 refers to which tooth?
- Maxillary left canine
- Maxillary right first premolar
- Mandibular left first premolar (Correct answer)
- Mandibular right canine
Correct answer: Mandibular left first premolar
The FDI system uses a two-digit number. The first digit indicates the quadrant (1-4 for permanent teeth), and the second indicates the tooth from the midline (1-8). Quadrant 3 is the mandibular left, and tooth 4 is the first premolar, making #34 the mandibular left first premolar.
Question 4: Caries on the incisal edge of an anterior tooth or the cusp tip of a posterior tooth is classified as:
- Class III
- Class IV
- Class V
- Class VI (Correct answer)
Correct answer: Class VI
Class VI is a later addition to G.V. Black's original classification. It specifically describes caries or wear defects found on the incisal edges of anterior teeth or the occlusal cusp tips of posterior teeth.
Question 5: On a dental chart, how is a tooth that needs to be extracted typically indicated?
- A circle is drawn around the root
- The entire tooth is colored in blue
- A diagonal line is drawn through the tooth (Correct answer)
- An 'X' is placed over the occlusal surface
Correct answer: A diagonal line is drawn through the tooth
While charting symbols can vary slightly, the standard convention for a tooth that is indicated for extraction is to draw a single diagonal or two crossed diagonal lines through the entire tooth on the chart.
Question 6: A carious lesion on the gingival third of the facial surface of tooth #6 would be classified as:
- Class I
- Class III
- Class V (Correct answer)
- Class VI
Correct answer: Class V
A Class V lesion is located on the gingival (cervical) third of the facial or lingual surfaces of any tooth, whether anterior or posterior. Tooth #6 is the maxillary right canine.
Question 7: Using the Palmer Notation System, what does the symbol topRightCorner4┘ represent?
- Maxillary right first premolar
- Maxillary left first premolar (Correct answer)
- Mandibular left first molar
- Mandibular right first molar
Correct answer: Maxillary left first premolar
The Palmer Notation System uses a grid symbol to denote the quadrant. The symbol ┘ represents the maxillary left quadrant. The number 4 indicates the fourth tooth from the midline, which is the first premolar. Therefore, 4┘ is the maxillary left first premolar.
Free DANB Dental Charting and Caries Classification Questions and Answers
Using the Universal Numbering System, which tooth is designated as #25?