A 12-year-old boy came to the clinic because his upper canine tooth was missing, and the gum looked swollen. Step 1: The dentist took a Panoramic X-ray. Step 2: The X-ray showed a large, round, dark space (radiolucency) around the crown of the missing canine tooth. Diagnosis: Dentigerous Cyst. Step 3: The dentist performed surgery (enucleation) under local anesthesia. They carefully peeled the cyst lining away from the bone and pulled out the tooth. Step 4: The tissue was sent to a lab to confirm the diagnosis. Outcome: The bone healed perfectly after 6 months. Follow-up: The boy gets an X-ray once a year to ensure the bone stays healthy.