Patient: A 25-year-old male presents with a localized traumatic occlusion on his upper central incisor after a sports injury. Diagnosis: Occlusal trauma resulting in widened PDL space. Treatment: 1. Conduct a periodontal probe examination to check for pocket depth. 2. Take a periapical radiograph to identify a 'widened PDL shadow' at the apex. 3. Perform selective grinding (occlusal adjustment) using a fine-grit diamond bur to remove the high spot. 4. Splint the tooth to the adjacent stable teeth using a composite resin and thin orthodontic wire for 4 weeks. Follow-up: Review at 1 month to confirm the PDL space has returned to its normal width of ~0.2 mm on the radiograph.