Tissue displacement during preparation is necessary to expose which type of surfaces?

Tissue displacement during dental preparation is vital as it facilitates access to specific areas of the teeth and surrounding tissues that need to be worked on. The correct approach involves ensuring that both prepared and unprepared surfaces are adequately exposed. This exposure is essential for various reasons. For instance, when a dentist prepares a tooth for a prosthesis, the prepared surface must be clearly defined to achieve a proper fit for crowns, bridges, or dentures. At the same time, unprepared surfaces may also require assessment to ensure that surrounding tissue and tooth structure are not adversely affected by the preparation process or the placement of restorations.

Proper tissue displacement allows for optimal visibility and access, ensuring that the dentist can work effectively without interference from soft tissues. This practice is crucial in both areas: for executing the necessary corrections to the tooth structure and for preparing the surrounding tissues to support the restoration accurately and healthily. Thus, engaging in tissue displacement during dental preparation is critical for successful outcomes in prosthetic dentistry.