Any over-the-counter help for someone with dental problem?

Depends. If is is pain, then going to the dentist and treating the cause is the only long term solution. If it is your being prone to dental problems, then brush 2x per day for 2 minutes each time, floss 1x per day, and use a tongue scraper 1x per day.
Pain meds. Tylenol, (acetaminophen) Ibuprofen for pain and inflammation. Otherwise, prescription antibiotics and extraction of the diseased tooth is the ultimate treatment.