What adjustment can be made to a temporary crown to enhance gingival health?

Undercontouring a temporary crown can significantly enhance gingival health by creating an optimal contour that reduces potential irritation and inflammation in the surrounding gingival tissues. When a temporary crown is appropriately undercontoured, it helps prevent excessive pressure on the gums and allows for better hygiene maintenance by facilitating easier access for tooth brushing and flossing. This reduced pressure also minimizes the risk of gingival overgrowth or inflammatory reactions, promoting overall periodontal health.

The other proposed adjustments may not offer the same benefits. Increasing the margin height could lead to improper seating of the crown, which may irritate the gums. Making the crown more opaque does not directly contribute to gingival health, as it pertains more to aesthetics and not functionality. Decreasing retention might risk the crown coming loose or failing to stay in place, which could result in gum irritation or issues with maintaining oral hygiene. Therefore, undercontouring is the most effective adjustment for improving gingival health associated with temporary crowns.