Multi-select problem: How does the next paragraph end?

How to deep clean your teeth
Schedule an appointment with the dentist.
A deep cleaning is usually recommended after periodontitis has already been diagnosed. Set up an appointment with your dentist for your deep cleaning.

OPT: [I] Having your dentist perform a deep cleaning can make your dentist's appointment look more professional. Ask for a weekly meeting with a dental hygienist. [II] You may want to do it soon after diagnosis to prevent deeper pockets from developing in your gums. If you are diagnosed with severe periodontitis, your dentist may refer you to a periodontist for the deep cleaning. [III] An appointment may be necessary if you have gum disease or people are getting dental implants. A deep cleaning should usually last a couple of weeks to several months. [IV] The doctor will likely perform an initial check-up after their exam and confirm your dental hygiene. You can schedule an appointment for up to 2 months and keep it up until then.
[II]