45 year old with acute pain and facial swelling

Hey friends! I had an interesting case this week in my clinic which I presented to my students and I thought why not share it here as well. A 45-year-old female patient presented with severe facial swelling and acute pain in the lower left mandibular region. Clinical examination revealed a partially erupted third molar (#17) with significant pericoronitis, along with trismus and lymphadenopathy. 

How would you proceed with patient management and what are the most critical next steps in care?