Fig. 7

Tooth preparation and postextraction appearance. a Orthograde revision of the altered mesial infundibulum and b, filling and compaction with PMMA. c–d Extracted tooth 209; arrowhead indicating remnants of the apiconasal fistula
Tooth preparation and postextraction appearance. a Orthograde revision of the altered mesial infundibulum and b, filling and compaction with PMMA. c–d Extracted tooth 209; arrowhead indicating remnants of the apiconasal fistula