Abstract
In order to obtain better results of apicoectomy by retrograde filling, we adopted a new operation method of apicoectomy using retrograde guttapercha filling and devised two instruments, an angle file which is used with a broach holder and a bi-angle explorer. The operation method which we adopted is as stated below :
Circular gingival incision, preparation of the gingival-periosteal flap and amputation of the apical root are the same as those in apicoectomy by orthograde filling. Next, the root canal is located using the bi-angle explore and the canal debridement and enlargement are done by the use of the angle file with the broach holder. After irrigation and drying of the canal, guttapercha points are filled into the canal with or without the canals or chloropercha. Excess guttapercha points are removed and the gingival-periosteal flap is sutured to the position.
Forty-three teeth were treated by this operation method. The follow-up period ranged from 6 months and 5 years and 5 months after the operation. Forty-one out of 43 teeth (95.3%) were clinically classified as successful and 2 as unsuccessful.
These results revealed that the operation method we adopted is simple and the operation results are satisfactory.
