Familial tooth bone graft for ridge and sinus augmentation: a report of two cases
A 49-year-old male patient visited our clinic for pain in the maxillary left 2nd premolar (#25) and the treatment of implants in the 1st and 2nd molar areas (#26-#27). After diagnosis of an abscess in the #25 root apex, tooth extraction was decided upon. The patient was scheduled to undergo extraction of the mandibular right impacted 3rd molar (#48 impacted molar). This tooth and an impacted tooth from his son were prepared as graft materials, and maxillary bone graft was performed in the #26-#27 areas. Delayed implant placement was planned.(, ) On April 22nd, 2010, the #48 was extracted, and the left impacted 3rd molar of the patient's 22-year-old son was extracted. These teeth were prepared as powder bone-graft materials. On May 7th, 2010, the prosthesis between the #24-#25 area was cut, and the #25 was extracted. A flap was elevated by performing crestal incision on the #25-#27 area, and maxillary sinus bone graft was performed by lateral approach. Autogenous and familial tooth bone graft in powder form were used as bone-graft materials. On August 3rd, 2010, implants (Osstem TS III SA; Osstem, Seoul, Korea, #25: 4 diameter/11.5 length, #27: 5 diameter/11.5 length) were placed in the #25 and #27 area, in a non-submerged type. The primary stability value measured by the Osstell mentor (Integration Diagnostics AB, Savedalen, Sweden) was shown to be #25: 67 implant stability quotient (ISQ) and #27: 71 ISQ, respectively.() Prior to implant placement, a bony specimen was harvested from the #27 area using a 2.0 mm diameter trephine bur. A healing abutment was connected, and the wound was sutured. On December 30, 2010, a final prosthesis was installed (Prosthetic treatment was performed by Dr. Yangjin Yi).()\nThe bone tissue specimens collected after 3 months were examined under light microscope. It was confirmed that in the sinus bone graft area, new bone had formed actively in the vicinity of graft materials. New bones formed along the border of the graft material were woven bones, and some bones had already formed short trabecular patterns. In some areas, they formed loose anastomosis with other trabecular new bones formed along the border of other graft materials. The more developed new trabecular bones were connected to the residual alveolar bone in a pattern that was more densely anastomosed.(, )