- 1. Opening and exenteration of air cells in the apex of the petrous part of the temporal bone. 2. In dental surgery, an obsolete synonym for apicoectomy. [L. apex, summit or tip, + G. ektome, excision]
* * *apic·ec·to·my .ā-pə-'sek-tə-mē n, pl -mies surgical removal of an anatomical apex (as of the root of a tooth or of the petrous portion of the temporal bone)
* * *n.(in dentistry) surgical removal of the apex of the root of a tooth, now often referred to as root end resection. It is usually accompanied by placement of a filling in a cavity prepared in the root end. It is carried out when root canal treatment has failed and cannot be redone.
* * *api·cec·to·my (a″pĭ-sekґtə-me) [apic- + -ectomy] excision of the apex of the petrous portion of the temporal bone.
Medical dictionary. 2011.