National Board Dental Hygiene Examination (NBDHE) Dental Hygienist Practice Test

The diagnostic method that is generally inappropriate for assessing coronal smooth surface lesions is DIAGNOdent. This device is primarily designed to detect caries using laser fluorescence, which is most effective for detecting occlusal caries or caries in pit and fissure areas rather than smooth surfaces. Smooth surface lesions, such as those found on the buccal or lingual surfaces of teeth, do not reflect the same fluorescence characteristics as occlusal surfaces, which limits the effectiveness of DIAGNOdent in those areas.

Bitewing x-rays, clinical examinations, and QFL (quantitative light-induced fluorescence) are more suitable for assessing coronal smooth surface lesions. Bitewing x-rays provide valuable imaging for identifying interproximal caries and other related issues. Clinical examination allows for direct visual assessment for signs of decay. QFL can also be utilized in evaluating smooth surfaces, offering a reliable method for detecting carious lesions.

In summary, DIAGNOdent lacks effectiveness for smooth surface lesion assessment, making it less appropriate compared to the other diagnostic methods mentioned.