A 32-year-old man came to a dentist with complaints of pain in the lower jaw on the right and problems with mouth opening. Objectively, the face is symmetrical, mouth opening is somewhat difficult (first degree), the mucosa behind tooth 47 is swollen, hyperemic, and painful to palpation. The mesial cusps of tooth 48 that has not fully erupted are visible. What diagnosis can be made in this case?