• 대한소아치과학회지
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• 제21권2호
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• pp.533-539
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• 1994

The mandibular buccal frenum is a fold of mucous membrane at the posterior labial vestibule, that attaches the lips and the cheeks to the alveolar mucosa, gingiva, and underlying periosteum. The buccal frenum becomes a problem if its attachment is too close to the marginal gingiva. It may then pull on healthy gingiva, encourge plaque formation and interfere with tooth brushing. Heavy buccal frenum mucogingivally results in insufficient attached gingiva, inadequate vestibular depth and high frenum attachment and also difficulty in eruption of mandibular second premolar. Frenectomy in various forms has been used for many years to remove the influence of the frenum. Unfortunately, the results are not always ideal and there is often postoperative relapse because of muscle pull. In this treatment, frenotomy was used in conjuction with autogenous free gingival graft with the object of removing the influence of the buccal frenum and creating an adequate and stable width of attached gingiva. We observed decrease in muscle pull, adequate width of attached gingiva and increased vestibular depth in addition to progressive eruption of second premolar. Periodic follow-up is needed for evaluation of relapse, grafting gingiva and also space regaining for second premolar.

• 대한소아치과학회지
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• 제27권4호
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• pp.564-572
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• 2000

치아매복에 의한 미맹출시 치아 매복의 방향과 위치 치근단의 완성정도, 맹출공간의 존재여부, 매복치 주변에 과잉치, 치아종, 낭종 등의 존재여부 등에 따라 발치, 교정적 견인, 외과적 자가이식중 어떤 술식을 시행할 것인지 결정하게 된다. 자가 치아이식은 치아의 위치가 교정력을 가할 수 없는 위치에 존재하거나 치아이동이 제한을 받게 되어 통상적인 치료가 불가능할 경우에 발거에 앞서 고려할 수 있다. 자가치아이식의 예후는 치근의 완성도, 외과적 시술능력 환자의 나이, 근관치료, 고정기간과 형태, 치주인대의 보존, 저장 방법 등에 영향을 받는다. 특히 이식 수여부의 골의 결손이 너무 클 경우 치아의 동요도를 감소시키고 골치유를 빠르게 하기위해 골이식을 고려할 수 있다. 치아 미맹출을 주소로 본원에 내원한 증례들로 상악과 하악의 여러 부위에서 과잉치, 치아종, 이소맹출 등의 다양한 원인요소들이 발견되었다. 자가치아이식전 필요시 공간확보를 행하고, 과잉치 및 치아종의 발거로 인해 골결손이 클 때, 탈회냉동건조골과 자가골 이식을 시행하였다. 치아고정은 $2\sim3$주정도 시행하고 $3\sim4$주 후 방사선적 검사와 임상검사후 근과치료의 필요성을 결정하고 정기적인 검사를 시행한 결과 치근흡수소견 등의 비정상적인 소견은 보이지 않고 정상적인 치유소견을 관찰할 수 있었다.

• Journal of Periodontal and Implant Science
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• 제44권5호
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• pp.216-221
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• 2014

Purpose: This retrospective study compares the amount of bone resorption around implants between an autogenous tooth bone graft (AutoBT) and a synthetic bone graft after a bone-added crestally approached sinus lift with simultaneous implant placements. Methods: In all, 37 patients participated in this study. Seventeen patients were grouped as group I and underwent an AutoBT-added sinus lift using the crestal approach. The remaining 20 patients were grouped as group II and underwent synthetic bone grafting. Both groups received the implant placements simultaneously. Of the 37 participating patients, only 22 patients were included in the final results: Eleven patients of group I and 11 patients of group II. Before the surgery, the distance from the alveolar crest to the sinus floor was measured using panoramic radiography. After the surgery, the distance was measured again from the neck of the implant thread to the most superior border of the added graft materials. Then, the amount of sinus lift was calculated by comparing the two panoramic radiographs. After a year, a panoramic radiograph was taken to calculate the resorption of the bone graft material from the radiograph that was taken after the surgery. The significance of the resorption amount between the two types of graft materials was statistically analyzed. Results: The bone height was increased to an average of 4.89 mm in group I and 6.22 mm in group II. The analysis of panoramic radiographs 1 year after the surgery showed an average bone resorption of 0.76 mm and 0.53 mm, respectively. However, the degree of lifting (P=0.460) and the amount of bone-grafted material resorption (P=0.570) showed no statistically significant difference. Conclusions: Based on this limited study, AutoBT can be considered a good alternative bone graft to a synthetic bone graft in a bone-added sinus lift, when extraction is necessary prior to the surgery.

• Journal of Korean Dental Science
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• 제1권1호
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• pp.10-14
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• 2008

The fracture of facial bone usually accompanies alveolar bone fracture and dislocation or fracture of teeth. Thus, aside from the reduction of fracture, the reconstruction of occlusion through the rehabilitation of lost teeth should be considered. The dislocation of tooth after trauma accompanying alveolar bone fracture needs bone grafting in case of implant treatment. Although autogenous bone graft shows good prognosis, it has the disadvantage of requiring a secondary surgery. This is a case of a mandibular condyle head fracture accompanied by alveolar bone fracture. The condylar head fragment removed during open reduction was grafted to the alveolar bone fracture site, thereby foregoing the need for secondary surgery.

• Journal of Periodontal and Implant Science
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• 제23권1호
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• pp.67-76
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• 1993

After periodontal surgery, the potential healing responses were occurred by interaction among junctional epithelium, gingival connective tissue, alveolar bone and periodontal ligament. The only cell that created periodontal regeneration was derived from periodontal ligament. The aim of the study was to evaluate the regenerative effects of the collagen membrane($collacote^{\circ}C$) and autogenous connective tissure graft with periosteum. Experimental periodontitis were created in furcation area of 4 adult dogs with bone removal and gutta percha packing. After 6 weeks later, the gutta percha was removed and experiment was performed divided by 3 groups. 1) Flap operation(control group). 2) Flap operation with collage membrane(Experimental group I). 3) Flap operation with autogenous connective tissue graft with periosteum (Experimental group II). After dogs were sacrificed after two and three weeks, specimens were prepared and stained with hematoxylin-eosin and masson-trichrome stain for light microscopic study. The results were as follows : 1. In all gruoups, connective tissue compartments were increased from two to three weeks especially in experimental group I. 2. Collagen membrane and connective tissue were increased collagen deposits of periodontal ligament. Therefore collagen fiber attached to tooth surface was seen. 3. In al experimental groups, newly forming alveolar bone was seen. 4. Collagen membrane and connective tissue were which prevented proliferation of epithelium, aided connective tissue new attachment and influenced periodontal regeneration.

• 대한소아치과학회지
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• 제39권1호
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• pp.66-72
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• 2012

자가치아이식이란 자신의 치아를 구강 내의 한 위치에서 다른 발치와나 외과적으로 형성된 치조와로 이동시키는 술식이다. 통상적으로 이 술식은 상실되거나 보존하기 힘든 제1대구치를 다른 치아로 대체하거나, 매복된 견치를 악궁의 정상 위치로 이동시키거나, 전치부와 같이 심미적으로 중요한 부위의 상실된 치아를 소구치로 대체하는 경우에 많이 사용된다. 자가치아이식을 성공적으로 수행하기 위해서는 세심한 수술 기법과 더불어 적절한 증례 선택이 중요한데, 이식할 치아는 치근 발육이 1/2~3/4 정도 이루어진 미성숙 치아가 유리하고 근단공이 넓을수록 치수 재혈관화의 가능성도 높아져 이후의 근관 치료의 필요성도 줄일 수 있다. 본 증례들은 소아에서 치근단 미완성 치아의 자가치아이식을 통해 임상적, 방사선학적으로 양호한 치유 결과를 얻었고, 별도의 근관 치료 없이 양호한 치수 치유 결과를 보였기에 보고하는 바이다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제30권5호
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• pp.428-433
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• 2004

Sinus floor augmentation has been proven an effective treatment procedure to increase bone volume in the posterior edentulous maxilla. Autogenous bone considered to be the best material for reconstructive bone surgery and has been successfully used as a graft material to augment posterior maxilla. However, the collection of autogenous bone required extra risks for morbidity and complaints. So, various bone graft materials included ${\beta}$-tricalcium phosphate(${\beta}$-TCP) has been introduced for replacing the autogenous bone. The objective of this clinical study was to determine the predictability of endosseous implant placed in a maxillary sinus with ${\beta}$-TCP grafting. We performed sinus elevation with ${\beta}$-TCP to install the implant in the 10 maxillary cases. The prosthetic procedure was performed 6-9 months after. The implant-prosthetics was checked about 1 year. We checked the implant and measured the maximum bite force to evaluate the function of the implant. There was not observed the specific problem and complication in dental implant and maxillary sinus in the grafted materials. The maximum bite force was 558N in case of natural tooth, 365N in implant without grafting, 318N in implant with ${\beta}$-TCP grafting. There was no significant difference between with and without sinus grafting on maximum bite force(p>0.05). As though the long term check-up is needed, the grafting of ${\beta}$-TCP as a osteoconductive materials can expand the volume and induce dense new bone formation in maxillary sinus. So, this short-term results support that ${\beta}$-TCP can be a suitable material for sinus augmentation.

• 대한소아치과학회지
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• 제44권1호
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• pp.108-115
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• 2017

매복치의 치료방법으로 교정적 견인, 발치 후 임플란트, 자가치아이식 등 다양한 치료 방법이 있다. 그 중에서도 자가치아이식은 성장하는 환자들에게서 이식치 고유의 치주인대세포의 보존 및 치조골 성장이 가능하다는 점에서 좋은 치료방법이라고 생각된다. 이 증례에서는 성장중인 청소년의 이소 매복 치아를 자가치아이식으로 치료한 두 개의 증례를 소개하고자 한다. 첫 번째 증례에서 이소 매복된 좌측 하악 제2소구치를 발거 후 정위치로 자가치아이식하였고 혈소판 농축 피브린(PRF)과 mineral trioxide aggregate (MTA)를 사용하여 재생 근관 치료를 하였다. 석회화 치성낭으로 인해 이소매복된 좌측 하악 제2대구치를 지닌 두 번째 증례에서 병소의 적출술을 시행하였다. Obturator를 3개월 간 장착하여 매복치아의 자발적 맹출을 기대하였으나 맹출 양상이 없어 자가치아이식한 후 MTA를 이용한 근관치료를 하였다. 두 증례 모두 자가치아이식술로 이소매복치를 간단하고 빠르게 치료하였다. 성장하는 환자에게서 이소매복치의 자가치아 이식술은 임플란트나 보철물 수복 대신 좋은 치료 방법이 될 것이다.

• Journal of Korean Dental Science
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• 제5권2호
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• pp.77-87
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• 2012

Purpose: This study examined the scanning electron microscopic feature, protein marker expression and osteoinductive activity of demineralized dentin matrix (DDM) from human for nude mice. Materials and Methods: Twenty healthy nude mice, weighing about 20 g were used for study. DDM from Human was prepared and implanted into the dorsal portion of nude mouse. Before implantation, DDM was examined by scanning electron microscopy (SEM). Nude mice were sacrificed at 2 weeks, 4 weeks and 8 weeks after DDM grafting and evaluated histologically by H-E, MT staining. And also immunohistochemistry analysis (ostecalcin, osteopontin) was performed. Result: Dentinal tubules and collagen fibers were observed by SEM of dentin surface of DDM. The DDM induced bone and cartilage independently in soft tissues. And, the histological findings showed bone forming cells like osteoblasts, fibroblasts at 2, 4 and 8 weeks. On immunohistochemistry analysis, osteocalcin and osteopontin positive bone forming cells were observed. Conclusion: This results showed that the DDM from human has osteoinductive ability and is a good alternative to autogenous bone graft materials.

• 대한소아치과학회지
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• 제26권1호
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• pp.69-76
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• 1999

The mandibular buccal frenum is defined as a fold of mucous membrane at the posterior labial vestibule and attaches the lips and the cheeks to the alveolar mucosa, gingiva, and underlying periosteum. The buccal frenum becomes a problem when its attachment is too close to the marginal gingiva. It may then pull on healthy gingiva, encourage plaque formation and interfere with tooth brushing. Especially, heavy buccal frenum mucogingivally results in insufficent attached gingiva, inadequate vestibular depth and high frenum attachment and also difficulty in eruption of mandibular premolar. Frenotomy, frenectomy and mucogingival surgery are used in treating heavy buccal frenum. Frenotomy with autogenous free gingival graft has been used popularly because of its stable result. But, it is difficult in younger children because of inadequate donor site, difficulty in making recipient site and behavior management. Frenotomy with apically positioned flap is considered as more efficient way for a very young child with heavy buccal frenum. Additionally, modified deep sedation with $N_2O-O_2$ can be used as an adjunct for the effective treatment outcome. Decrease in muscle pull, adequate width of attached gingiva and increased vestibular depth can be expected from this treatment approach.