Is it ok to leave food in your wisdom teeth holes if you cant get it out?

No...

AnswerNo, because accumulated food might cause infections.

You can try to rinse with water and salt to remove the remaining food. If that doesn't work, you might purchase a plastic syringe from the pharmacy that make it easier to clean the extraction holes.

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An easier method is to purchase a "Water Pik" there are stand alone units that cost a fair amount. The cheapest type of water pik to get is a Quick Breeze Oral Irrigator. You attach it to your faucet and you can control the pressure. It can also be used as a water flosser.

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Using a watter jet or water pik is a perfect way of removing food and plaque that is still soft, and it has to be used as a regular addition to your daily teeth care, along with brushing and flossing. Here's a video with great info about oral water jet -

http://www.checkdent.com/en/videos/oral-water-jet-123.html