Across
- 3. Microorganism transferred from fingers.
- 4. Digit often involved in sucking.
- 8. The roof of the mouth affected by sucking pressure.
- 10. Chronic nail‑biting behavior.
- 12. Bacterial invasion of broken skin.
- 13. Misalignment of teeth.
- 15. Skin irritation caused by moisture and friction.
- 17. The way teeth fit together when the mouth closes.
- 19. Skin beneath the fingernail.
- 20. Emotional tension that can trigger biting.
- 24. Force applied by the thumb against teeth or palate.
- 25. Cue that prompts nail biting.
- 27. A finger or thumb used in sucking habits.
- 28. Forward positioning of upper front teeth.
Down
- 1. Structural change from chronic biting.
- 2. Sudden urge to bite nails.
- 5. Emotional soothing gained from sucking.
- 6. Microbes that enter through broken skin.
- 7. Torn piece of skin beside the nail.
- 9. Infection around the nail fold.
- 11. Thickened skin on a thumb from repeated sucking.
- 14. Skin at the base of the fingernail.
- 16. To calm oneself through a repetitive action.
- 18. A repeated behavior, often hard to stop.
- 21. A gap between upper and lower teeth.
- 22. Mental strain that increases biting.
- 23. Observable action, such as biting.
- 26. The process of teeth coming into the mouth.
- 27. Physical harm caused to nails or skin.