What are two ways you can fabricate a custom provisional what specific areas of the most critical for fit when trimming?

Two ways to fabricate a custom provisional restoration are:

Direct fabrication chairside:

- This method involves creating the provisional directly in the patient's mouth using materials such as composite resin or temporary crown and bridge material.

Indirect fabrication in the laboratory:

- This method involves taking an impression of the prepared teeth and creating the provisional restoration in a dental laboratory.

When trimming a custom provisional restoration for an optimal fit. the most critical areas to focus on are:

1. Proximal contacts:

- Ensure that the contacts with adjacent teeth are accurate and not too tight or too loose.

2. Occlusal contacts:

- Trim the provisional restoration should allow proper occlusion with opposing teeth, especially in centric occlusion and during excursive movements.

3. Marginal adaptation:

-Ensure that the margins of the provisional restoration fit seamlessly with the prepared tooth contours to prevents any food impaction or gingival irritation.

4. Embrasure spaces:

- The embrasures between the custom provisional and adjacent teeth should be appropriate to allows for interproximal cleaning.

5. Overall contour:

- The shape and contour of the provisional restoration should mimic the natural anatomy of the tooth, and its surface texture should resemble that of a natural tooth.