• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제40권1호
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• pp.37-42
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• 2014

Recently, clinical application of autogenous tooth bone-graft materials has been reported. Autogenous tooth bone graft has been used in implant surgery. Familial tooth bone graft is a more advanced procedure than autogenous teeth bone graft in that extracted teeth can be used for bone graft materials of implant and teeth donation between siblings is possible. We used autogenous tooth and familial tooth bone-graft materials for ridge augmentation and sinus bone graft and obtained satisfactory results. The cases are presented herein.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제35권5호
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• pp.310-315
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• 2013

Micromorphometric and histological examinations were conducted with a collected tissue specimen nine months after sinus bone graft using autogenous tooth bone graft material (AutoBT). As a result of micro-computed tomographic analysis, the total bone volume (graft material+new bone) was 76.45%, and the proportion of new bone was 45.4%. The bone mineral density and the average Hounsfield Unit of new bone were 0.26 and 1,164.69, respectively. The histological examination showed that AutoBT particles were united well with new bone. AutoBT was considered to have excellent bone healing ability after sinus graft and bone density that can resist repneumatization.

• 대한치과의사협회지
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• 제48권4호
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• pp.275-279
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• 2010

Dental implant restoration in partial or full edentulous state has become the standard treatment in recent years. Bone graft with guided bone regeneration technique has been regarded as one of the most reliable methods to restore the bone defect area due to periodontal disease or dental trauma. Bone graft materials and membrane are the essential component of guided bone regeneration; however, a variety of bone graft materials confuse us in implant dentistry. Autogenous bone is the recognized standards in implant dentistry owing to its osteogenesis potential. Despite of its disadvantages, grafting autogenous bone is the most reliable methods. Even though the development of new bone grafts materials, autogenous bone is useful in exposed implant thread and total lack of buccal or lingual bone. Allogenic, xenogenic and synthetic bone have the osteoconductive and osteoinductive potential. These materials could be used successfully in self-contained cavity such as sinus cavity and three-wall defects. In this article, application of bone graft material is suggested according to the function of bone graft materials.

• 대한치과의사협회지
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• 제49권3호
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• pp.159-169
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• 2011

The author have been conducting research on the development of biomaterials using human teeth since 1993, and we recently reported the results of several of our advanced studies. Based on previous studies, new bone graft material using autogenous tooth(AutoBT) was developed. The author performed implant placement combined with GBR and sinus bone graft using AutoBT during the period of June 2009 to September 2009. During the postsurgical healing period, clinical and radiological evaluations were performed. For patients who consented to histological testing, tissue samples were obtained and histological examination was performed two months and four months after GBR and four months after sinus bone graft. Serious complications pertinent to bone graft materials were not observed, and it was shown that the level of the crestal bone in the vicinity of implants was relatively well maintained. In histologic examination after two months and four months, favorable new bone formation was observed.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제39권
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• pp.21.1-21.6
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• 2017

Background: The purposes of the present study were to compare implant stabilities of mandibular block bone graft and bovine bone graft and to evaluate influencing factors for implant stability in mandibular block bone (MBB) graft. Methods: This retrospective study investigated 1224 cases and 389 patients treated by one surgeon in the Department of Oral and Maxillofacial Surgery of Pusan National University Dental Hospital (Yangsan, Korea) between January 2010 and December 2014. Proportions that MBB graft cases constitute in all implant restoration cases and in all bone graft cases were measured. Implant stability quotient (ISQ) values were achieved by the same surgeon before loading. The average ISQ values of the experimental groups were compared. In addition, ISQ values of influencing factors, such as age, sex, implant size, and implant placement site, were compared within the MBB group using $Osstell^{TM}$ Mentor ($Osstell^{(R)}$, $G{\ddot{o}}teborg$, Sweden). Paired t test and ANOVA were conducted for statistical analysis with a significance level of 0.05. Results: Fifty-five percent of all implant restoration cases performed bone graft while MBB cases constituted 34% of all implant restoration cases and 61% of all bone graft cases. Comparing ISQ values according to bone graft materials, the MBB group manifested sufficient implant stability by presenting comparable ISQ value to that of the experimental group without bone graft. Among the reviewed factors, females, mandibular molar regions, and implants in larger diameter displayed greater implant stabilities. Conclusions: Satisfactory implant stability was accomplished upon administration of MBB graft. Within the limitation of this study, gender, implant site, and implant diameter were speculated to influence on implant stability in MBB graft.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제38권
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• pp.19.1-19.4
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• 2016

Background: Implant surgery has become popular with the advance of surgical techniques such as sinus lifting, guided bone regeneration, and block bone graft. However, there were no data about the frequency of bone graft during implant surgery. The purpose of this study was to report the frequency and types of bone graft depending on dental implant patients' profile to complement the database regarding implant surgery. Methods: The implant operations had been performed from January 2006 to October 2014. The upper and lower jaws were divided into six sextants. A total of 792 sextants were included in this study. Patient information including sex, age, sites, bone graft, and types of bone were investigated. Results: A total of 1512 implants had been placed. Male and female sextants were 421 and 371, respectively (M:F = 1:0.88). Average age was 54.3 (ranging from 20 to 88 years old). Implants were placed in the posterior maxilla (322 sextants, 40.7 %), posterior mandible (286 sextants, 36.1 %), anterior maxilla (127 sextants, 16.1 %), and anterior mandible (57 sextants, 7.2 %). Bone graft was performed in 50.3 % of the sextants. Among the bone grafted sites, sinus lifting with lateral approach (22.1 %) and guided bone regeneration (22.7 %) were performed most frequently. Conclusions: Bone graft in implant surgery was necessary to augment defects. More than half of the sextants needed bone graft for implant installation.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제18권3호
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• pp.371-377
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• 1996

Bone graft has been used to repair one defect caused by disease and trauma, congenital and acquired deformities. Graft materials are autogenous bone, allogenic bone, xenogenic bone, synthetics. Autogenous bone graft is the most superior to other materials for immunologic reaction, compatibility to host tissue, and revascularization. However, autogenous bone graft is required for additional operation and the amount of taking is limited. Autografts are obtained at own expense and also limited in size, shape. In order to compensate these problems, allogenic bone graft has been used increasingly. But allogenic bone graft encounters immunologic complications. Therefore, it has been used after freezing, lyophilization, or demineralization. Allogenic bone processed by only lyophilization includes potential antigenic properties on its surface, therefore it is demineralized to deplete immunologic reaction. Demineralized bone releases BMP and helps the mesenchymal cells transform to the chondroblast to produce cartilage and bone. This reaction is called osteoinducation. Many authors have reported that mineralized lyophilized bone had less antigenicity clinically and favorable bony consideration with host bone. In our department from 1995 to now, we have used banked allogenic bone graft that has been prepared from Wonkwang Bone Bank in 5 cases and mineralized lyophilized bone graft in 2 cases to reconstruct the maxillofacial bone defect after tumor resection and cyst enucleation and cleft alveolus. We will report with literature review that the result is favorable functionally and esthetically.

• 대한치과의사협회지
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• 제22권1호통권176호
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• pp.37-48
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• 1984

Clinical assessment of bone-graft healing in the maxillofacial region is generally limited to clinical evaluation, radiographs, and biopsy. Sequential interpretation of osseous repair, more sensitive than with conventional radiography is possible with a non-invasive, non-destructive radionuclide method. Technetium-99m radionuclide bone scan was used in the evaluation of the progress of osteogenic activity in autologous iliac bone graft and freeze-dried bone allograft of dog's mandible. Bone scan was performed at 1wk, 2wk, 4wk, 6wk, and 8wk after grafting. In autologous graft the activity ratio for the graft bone remained greater than that of the host since 2자 after grafting; however, in lyophilized allograft the activity ratio for graft bone was greater than that of the host at 6자 after grafting.

• Journal of Korean Dental Science
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• 제6권2호
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• pp.50-57
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• 2013

Purpose: Autogenous tooth bone graft is proven to be efficient. We evaluated the bone healing effect and clinical capabilities of autogenous tooth bone materials as a scaffold when growth factor is used together with this material. Materials and Methods: Subjects were those who needed implant placement and bone graft because of missing tooth or alveolar bone defect and who kept their autogenous tooth or needed extraction of other tooth. Group I included autogenous tooth bone graft with growth factor, whereas Group II had only autogenous tooth bone graft. We investigated the bone healing state through computed tomography taken just before surgery and 3 to 4 months after surgery to evaluate the effectiveness of bone graft. Group I had 9 patients, whereas Group II had 5 patients. We compared the pre- and post-operative increase of the Hounsfield unit and bone height by analyzing the computed tomography images. Result: Sinus bone grafts numbered 8 cases, and vertical ridge augmentation was performed together with 3 cases of these. Vertical ridge augmentation was performed in 2 cases, and horizontal ridge augmentation in 1 case alone. Socket graft was done in 3 cases. The post-operative mean value of the Hounsfield unit was 960 in Group I and 836.7 in Group II, but the increase was almost similar, i.e., 636.9 in Group I and 634.7 in Group II on the average. Increase of bone height was 7.6 mm in Group I and 11.1 mm in Group II on the average. This difference was attributable to the fact that most of the cases were sinus bone graft in Group II. Conclusion: In this study, we suggest the possibility of autogenous tooth bone graft materials as a scaffold besides their bone healing ability.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제33권3호
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• pp.256-263
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• 2011

Purpose: The purpose of this study was to evaluate the effectiveness of autogenous tooth graft materials after maxillary sinus bone grafts. Methods: The study involved 23 implants in 22 patients who visited the Department of Oral and Maxillofacial Surgery and the Department of Periodontics, Chosun University Dental Hospital, in 2008 and received autogenous tooth graft materials for maxillary sinus bone grafts. Results: For eight patients with maxillary bone graft materials prior to implant placement, the healing period averaged five months. For eleven patients with simultaneous maxillary bone graft and implant placement, eight patients received a second surgery, with an average healing time of six months. Three patients had a longer observation period with only a fixture implanted. Three patients who received only a bone graft required more time to implant placement because of the lack of residual bone and also for personal reasons. Only 5 patients had biopsies performed and complications such as infection and dehiscence healed well. The application of autogenous graft materials to the maxillary bone graft sites did not exert any significant effects on the success rates. When a mixture of graft materials was used, the post-surgical bone resorption rate was reduced. Histological analysis showed that new bone formation and remodeling were initiated during the three-to-six month healing period. Bone formation capacity increased continuously up to six months after the maxillary bone graft. Conclusion: According to this analysis, excellent stability and bone-forming capacity were seen in cases where autogenous materials were used alone or mixed with other materials. Autogenous tooth graft materials may be substituted instead of autogenous bones.