You do not need to use a dedicated gluten-free oven, however here are some tips to prevent cross-contact:
Avoid cooking gluten-containing foods and gluten-free foods together in the oven - do it separately.
Make sure to clean any surface your food will touch before using the oven. Place food on a clean pan or use foil. Make sure the wire shelves are free of crumbs if cooking directly on the rack.
Also, do not use the convection feature when cooking gluten-free because there might be flour in the fan from when regular bread/food was baked that can recirculate and potentially contaminate the food.
Note: This information is provided by NCA and Katarina Mollo MEd, RDN, LDN, NCA's Director of Education. This information is meant for educational purposes only and is not intended to substitute for personalized medical advice or replace any medical advice provided directly to you by your health care provider. No liability is assumed by the NCA or Katarina Mollo, MEd, RDN, LDN by providing this information.