A foreign body reaction is a response of the inflammatory process, which is typically granulomatous, to an exogenous or endogenous foreign material that the cutaneous immune system perceives as foreign. In this paper, we report a 23-year-old female patient who presented with complaints of pain and swelling in the left lower back tooth region and had a history of third molar extraction in the third quadrant. A panoramic radiograph was taken before and after the extraction, and the post-surgical radiograph displayed a nonhealing lesion. Tissue was excised and sent for histopathological examination. By and large, there are substantial causes for a post-extraction foreign body reaction, and in our case, it was likely due to food cover or chewing gum paper impaction. After a thorough evaluation, prompt treatment and regular follow-up on the case were made.