What are the classifications of impressions?

The classifications of impressions are indeed categorized as preliminary, final, and bite registration.

Preliminary impressions are often taken to create study models, which are used for treatment planning or appliance fabrication. They are typically less detailed and serve as a starting point for further dental procedures.

Final impressions, on the other hand, are much more precise and are used to create definitive restorations or prosthetics, such as crowns or dentures. These impressions capture the exact contours of the oral structures and are essential for the accuracy of the fitting of the final product.

Bite registration impressions record the occlusion of the patient's jaws, which is crucial for ensuring that any dental work maintains the correct bite relationship. This helps to prevent any discomfort or misalignment in the future.

Understanding these classifications is vital in the practice of dentistry, as each type of impression serves a distinct purpose in the overall treatment process, allowing for both effective diagnosis and the creation of appropriate dental solutions.