Which of the following is NOT an indication for periodontal surgery?

Teenage patients with minor gum issues generally do not require periodontal surgery because their conditions are typically manageable with conservative treatments. In many cases, adolescents may experience gingivitis or mild periodontal issues that can be effectively treated through non-surgical methods such as improved oral hygiene practices, scaling, and professional dental cleanings.

On the other hand, residual probing depths of 5 mm or more, access challenges to teeth, and persistent inflammation despite non-surgical treatment are all indications where periodontal surgery may be warranted. These conditions reflect more severe periodontal disease or limitations that justify surgical intervention to restore periodontal health and improve tooth and gum function.

In summary, the treatment of minor gum issues in teenage patients usually does not necessitate surgical procedures, as these issues can often be addressed through less invasive means, contributing to the selection of this answer.