DANB General Chairside Practice Test

What is the correct method to assess mobility in an adult dentition?

1. A) Applying pressure with fingers

2. B) Using two metal dental instruments, one on the lingual and one on the buccal surface

3. C) Observing movement with a dental mirror

4. D) Performing percussion on the tooth

The correct answer is: B) Using two metal dental instruments, one on the lingual and one on the buccal surface

Assessing mobility in an adult dentition is an important process for determining the health of the periodontal tissues and the overall stability of the teeth. The method using two metal dental instruments, one on the lingual and one on the buccal surface, is considered the most accurate approach for this assessment. By applying pressure with instruments to both surfaces, the clinician can effectively gauge the degree of movement of the tooth in its socket. This technique allows for a clear determination of any pathologic mobility, which can indicate issues such as periodontal disease or other dental concerns. This dual-instrument method provides a more precise measurement compared to other assessment methods. Other methods, such as applying pressure with fingers, might not provide a consistent assessment as the amount of force can vary significantly, leading to inaccurate results. Observing movement with a dental mirror is also not an adequate method, as it lacks the tactile feedback necessary to accurately assess the degree of mobility. Meanwhile, performing percussion on the tooth can provide information about the vitality and health of the tooth, but does not specifically assess mobility in the periodontal sense. In summary, using two metal instruments is a standardized, reliable method that delivers clear results in assessing tooth mobility.