What causes space between teeth after Scaling and Root Planing (SRP)?

The indication that a reduction in edema is responsible for the space that can develop between teeth following Scaling and Root Planing (SRP) is based on the physiological changes that occur during this periodontal treatment. When SRP is performed, the removal of plaque, tartar, and inflammation in the gingival tissue leads to a decrease in swelling and inflammation (edema) in the surrounding tissues.

As the inflammation subsides, the periodontal tissues, specifically the gums, may contract and return to a healthier state, resulting in the appearance of more space between the teeth. This is often observed as the gums heal and reshape, allowing for better overall gum health and creating a more stable environment around the teeth. The space is not necessarily due to the loss of supporting bone or shifting of teeth but is a natural consequence of the healing process following the reduction of inflammation.

This ties into why the other options are less applicable. Increased edema would lead to swelling that could push teeth apart, not create space. Bone resorption generally is a result of more advanced periodontal disease, not directly from SRP in a healthy healing context, and misalignment of teeth is usually unrelated to the effects of SRP and edema at that stage of treatment.