Which term describes where the unprepared tooth structure meets the preparation?

The term that describes where the unprepared tooth structure meets the preparation is known as the cavosurface margin. This is a critical concept in restorative dentistry, as the cavosurface margin is where the dental material interacts with both the prepared tooth structure and the natural tooth surface. This margin plays a significant role in the overall success of dental restorations, as it influences the seal and retention of the restorative material, and helps to minimize microleakage which can lead to decay under the restoration.

Understanding the importance of this margin is vital for dental practitioners, as a well-defined cavosurface margin is essential for achieving proper adaptation of the restorative material and ensuring the longevity of the dental work. In summary, recognizing the cavosurface margin is key in providing effective dental care and ensuring that restorations are not only esthetically pleasing but also functionally sound.