1. Tooth Pain: Persistent or severe tooth pain could indicate an underlying issue.

2. Bleeding Gums: Gums that bleed regularly, especially during brushing or flossing, can be a sign of gum disease.

3. Bad Breath: Chronic bad breath may signal an infection or other dental problems.

4. Sensitivity: Sudden sensitivity to hot, cold, or sweet foods and drinks could indicate tooth decay or enamel erosion.

5. Swollen or Red Gums: Inflammation or redness in your gums often points to gum disease.

6. Loose Teeth: Adult teeth that feel loose are a serious sign that you need to see a dentist.

7. Sores or Lesions: Sores in your mouth that don’t heal within two weeks should be evaluated by a dentist.

8. Jaw Pain or Clicking: Pain or clicking sounds in your jaw could indicate TMJ disorders or other issues.

9. Dry Mouth: Persistent dry mouth can contribute to tooth decay and other oral health problems.

10. Changes in Your Bite: Any noticeable change in how your teeth fit together when you bite down should be checked by a dentist.