A practically healthy 7-year-old child complains of a broken crown of the upper right front tooth and pain in this tooth. Objectively, 1/3 of the crown of tooth 11 is missing, the pulp is exposed in one spot, acutely painful, red, and bleeds when probed. Percussion of the tooth is slightly painful. The trauma was 2 hours ago. What is the optimal treatment method in this case?