Abstract
Most of the studies concerning of periodontal pocket have been made with necropsy or animal materials so far.
To investigate vital periodontal pocket, a new approach to biopsy technique has been tried on experimental animals and periodontal patients. This technique is quite limited only for the indications of tooth extraction, for instance malpositioning or hopeless teeth.
Using sharp knife, labial gingival specimen is cut off first including the margin of alveolar bone, then tooth is extracted with extreame care.
One of each examples of animals and human materials were demonstrated. No serious hazard has been experienced.
This technique will be employed for both of basic and clinical investigation.
