When is a subgingival margin not indicated?

A subgingival margin is typically used when there are specific clinical indications, such as the need for additional retention, controlling root sensitivity, or addressing caries that extend below the gumline. However, when there is no need to hide the restoration margin, a subgingival margin becomes unnecessary.

In this case, if the restoration margin can be placed supragingivally—which is generally less invasive and maintains better periodontal health—it's advantageous to do so. A supragingival margin allows for easier cleaning, better oral hygiene maintenance, and potentially less risk for future periodontal issues. If hiding the margin isn't a requirement due to aesthetic concerns or functional factors, opting for a less complex, more conservative approach is appropriate. Thus, the choice to avoid a subgingival margin is justified in scenarios where visibility or margin concealment is not a concern, supporting a simpler and more effective restorative process.