What tool is most commonly used to check a patient's bite after sealant placement?

The most common tool used to check a patient's bite after sealant placement is articulating paper. This tool is specifically designed to detail the contact points between the upper and lower teeth. When a dental sealant is applied, it can alter the occlusion, or bite, and it's crucial to ensure that the sealant does not interfere with proper alignment and function.

Articulating paper is placed between the teeth, and the patient is asked to bite down. The areas that contact the paper will leave markings, allowing the dentist to see where the bite is hitting and if adjustments are needed. This checks for any high spots or discrepancies that may cause discomfort or problems for the patient.

Other tools listed, such as a dental mirror, are primarily for visibility and inspection rather than for assessing bite alignment. X-rays are valuable for evaluating underlying dental structures but do not provide immediate feedback on occlusion or bite. A spoon excavator is used for removing decay and is not relevant in checking bite alignment. Therefore, articulating paper is the appropriate choice for ensuring optimal bite alignment post-sealant application.