The importance of apex removal on PET.
Patient received a PET on tooth #12: the tooth root was hemisected and prepared in order to include the apex.
The x-ray shows the maintenance of IBH, promoted by the root presence. Bone around implant is well represented (PET was performed before implants).30 days X-ray control was made on march 21 and PET performed on September 29.
On the removal of palatal fragment an apical cyst was detected, attached on the apex. (in 6 months time a cyst start developping)
The epithelial rest of Malassez, are frequent on lateral incisor being a possible cause for apical cyst.
So, IMO, careful root hemisection should be carried out, possibly involving the entire root apex. What do you think about it?
2.5 mm of root was removed from gingival margin on vestibular area: this is a data on which we should work, trying to establish a depth consensus.