As your wisdom tooth (last tooth) is tilted, the second last tooth has become carious and broken. The food gets lodged between these two teeth. You need to have your wisdom tooth removed. And get your second last tooth repaired and capped.
Next Steps
Consult your dentist. He may xray your teeth.
Health Tips
Even if it is not painful, do get your tooth repaired. If it breaks more, it will be not repairable in future and might need removal then.