Which procedure is indicated for treating a mild case of gingivitis during pregnancy?

Non-surgical periodontal therapy is indicated for treating a mild case of gingivitis during pregnancy because it focuses on the removal of plaque and calculus from the tooth surfaces without the need for invasive procedures. This approach is less stressful for the patient and minimizes risks to both the mother and the developing fetus.

Non-surgical therapy typically involves professional cleanings and may include patient education on better oral hygiene practices. This is especially important during pregnancy, as hormonal changes can exacerbate gingival issues, making effective home care crucial.

The other options, such as scaling and root planing, soft tissue grafts, and full mouth extractions, may be inappropriate in the context of mild gingivitis, especially during pregnancy. These procedures are more invasive and may not be necessary or safe for managing a condition that can often be reversed with conservative treatment.