Why is it better to have undercontoured restoration than overcontoured?

Having an undercontoured restoration is better due to biological considerations. Undercontoured restorations typically allow for healthier tissue interaction, as they do not place excessive pressure on the surrounding gingival tissue. This helps maintain proper gum health and reduces the risk of periodontal issues, such as inflammation or recession, which can occur when the restoration is overcontoured and creates areas where plaque can accumulate more easily.

Proper contouring also supports natural tooth function and periodontal health by mimicking the natural anatomy of teeth, allowing for appropriate movement of the soft tissue and less interference with the patient’s oral hygiene practices. Ultimately, prioritizing biological health helps ensure the longevity and stability of both the restoration and the supporting structures.

While there are mechanical, appearance, and placement factors to consider when designing a restoration, the biological implications are crucial since they directly impact the patient's overall oral health.