What is the advantage of under-contoured temporary crowns?

Under-contoured temporary crowns have the advantage of improving the health of the gingival tissues. When temporary crowns are designed with a less contoured profile, they reduce the risk of creating undue pressure and irritation on the surrounding gum tissue. Properly contoured crowns help maintain the natural contour of the gums and allow for adequate space for oral hygiene practices. This minimal contact encourages better plaque control and reduces the chances of periodontal issues, thereby promoting overall gingival health.

While the other options may have their own merits in different contexts, they do not directly relate to the specific benefit of under-contoured temporary crowns in relation to gingival health, which is essential for maintaining the integrity of periodontal structures during the temporary restoration phase.