What is a key limitation of bitewing radiographs for caries detection?

What is a key limitation of bitewing radiographs for caries detection?

• A. They miss early noncavitated caries
• B. They detect only radiographically visible lesions and may miss early noncavitated caries
• C. They show three-dimensional assessment
• D. They replace clinical examination

Answer: (B)

Bitewing radiographs are useful for spotting caries on proximal surfaces, but they only reveal what has become radiographically visible. Early noncavitated caries, which are often confined to enamel and don’t yet cause a detectable radiolucency, can be missed because the mineral loss isn’t sufficient to show up on the image. Additionally, bitewings provide a two-dimensional view, so they can miss the true depth or extent of lesions and can be affected by overlapping contacts. Because of these limits, the most accurate statement is that bitewing radiographs detect only radiographically visible lesions and may miss early noncavitated caries.

Bitewing radiographs are useful for spotting caries on proximal surfaces, but they only reveal what has become radiographically visible. Early noncavitated caries, which are often confined to enamel and don’t yet cause a detectable radiolucency, can be missed because the mineral loss isn’t sufficient to show up on the image. Additionally, bitewings provide a two-dimensional view, so they can miss the true depth or extent of lesions and can be affected by overlapping contacts. Because of these limits, the most accurate statement is that bitewing radiographs detect only radiographically visible lesions and may miss early noncavitated caries.