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비스포스포네이트(Bisphosphonate)를 복용하는 환자에서 발생하는 골괴사증
황경균(Kyung-Gyun Hwang) 대한치과의사협회 2011 대한치과의사협회지 Vol.49 No.7
Bisphosphonates are widely used in the management of osteoporosis patients. Many reports and clinical studies have published a relationship between necrotic bone lesions localized to the jaw and the use of chronic bisphosphonate therapy. This osteonecrosis named bisphosphonate-related osteonecrosis of the jaw(BRONJ). This article described the mechanism, chemical structure, indication, risk factor of the bisphosphonate
가토 두개부 골결손에서 맥동전자기장이 골형성에 미치는 영향에 관한 연구
황경균(Kyung-Gyun Hwang),이종환(Jong-Hwan Lee),김명진(Myung-Jin Kim),심광섭(Kwang-Sup Shim),김종원(Jong-Won Kim) 대한구강악안면외과학회 2002 대한구강악안면외과학회지 Vol.28 No.4
Pulsed electromagnetic field (PEMF) was used first to induce osteogenesis in 1974. The appliance which was consisted of the Helmholtz coil configuration have used to osteogensis. The objective of this study was to determine whether PEMF, a frequency of 100 Hz and magnetic field strength of 38 gauss applied to the calvarial defect in rabbit, could affect the induction of osteogenesis and the healing of the graft bone. This field should not produce excitation of nerve or muscle and heating the tissue. To evaluate the effect of PEMF on osteogenesis, 16 rabbit under the same condition was divided into 8 experimental groups and 8 control groups. 10 mm calvarial bone defects were formed around sagittal suture. The defect of left side was left without graft while the defect of right side was grafted by bone harvested from left side. A pulsed electromagnetic field was applied for 8 hours per day. Each group was sacrificed after 1 week, 2 weeks, 4 weeks, 8 weeks. Microscopic specimens were obtained from the calvarial bone defects and surrounding tissue using Hematoxylin-Eosin staining method. The results were as follows. 1. In the group which pulsed electromagnetic field was applied, new bone formation filled up the defect was observed after 4 and 8 weeks effectively. 2. There are no difference in the healing period for the fusion between the bone and graft bone. According to the result, the PEMF with 38 Gauss, 100 Hz was very effective in the healing of bone defect and new bone formation. So The PEMF will be useful in clinical aspect for oseteogenesis.
황경균(Kyung-Gyun Hwang),송승일(Seung-Il Song),김상우(Sang-Woo Kim),이성훈(Sung-hoon Lee),김영면(Young-Muen Kim),심광섭(Kwang-Sup Shim) 대한구강악안면외과학회 2004 대한구강악안면외과학회지 Vol.30 No.5
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 β-tricalcium phosphate(β-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 β-TCP grafting. We performed sinus elevation with β-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 β-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 β-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 β-TCP can be a suitable material for sinus augmentation.
하치조신경 전달마취 시 4% 아티카인과 2% 리도카인의 임상적 효과에 관한 비교연구
임태윤,황경균,박창주,김광수,오영,한지영,심광섭,Im, Tae-Yun,Hwang, Kyung-Gyun,Park, Chang-Joo,Kim, Kwang-Soo,Oh, Young,Han, Ji-Young,Shim, Kwang-Sup 대한치과마취과학회 2010 Journal of Dental Anesthesia and Pain Medicine Vol.10 No.1
Background: Articaine, commercially available in South Korea from 2004, is widely being used for dental treatments. In the surgical extraction of impacted mandibular third molars, one of the most common procedures in oral and maxillofacial surgery, the anesthetic efficacy of 4% articaine and 2% lidocaine, both with 1:100,000 epinephrine, was compared. Methods: A randomized double-blind clinical trial was conducted of 80 patients for bilateral surgical extraction of mandibular third molars with informed consents. One operator carried out the routine surgical procedures using local anesthetic 4% articaine or 2% lidocaine with the same concentration of vasoconstrictor. Latency, duration of anesthesia and the amount of anesthetic solution were recorded. A visual analog scale (VAS) was used to evaluate the intraoperative pain. Results: The pain VAS scores reported similar anesthetic effect with both local anesthetics. Not in the latency of anesthesia and the amount of anesthetic solution, statistically significant difference was found in the mean duration of anesthesia. Conclusions: It was concluded that 4% articaine could offer better or at least the same clinical feasibility compared to 2% lidocaine, particularly in terms of the duration of the local anesthesia for common dental treatments.
임병섭,황경균,심광섭,Lim, Byung-Sup,Hwang, Kyung-Gyun,Shim, Kwang-Sup 대한치과마취과학회 2005 Journal of Dental Anesthesia and Pain Medicine Vol.5 No.2
Facial nerve paralysis following delayed complication after trauma was rare and hard to find reason After symptom of facial nerve paralysis was found, careful clinical and neuropathic investigation needed through electromyography and nerve conduction velocity. It is necessery to Hewing that functional degenaration of nerve conduction was irresible or not. It is important to determine if palsy is already present alter trauma or some later time because origin of viral infection or temperature change may possible.
가토 두개골 결손부에 이식된 ${\beta}-TCP$의 골치유 과정에서 PRP의 효과에 관한 연구
이성훈,황경균,박창주,임병섭,조정연,백승삼,심광섭,Lee, Soung-Hoon,Hwang, Kyung-Gyun,Park, Chang-Joo,Lim, Byung-Sup,Cho, Jung-Yeon,Paik, Seung-Sam,Shim, Kwang-Sup 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.5
Purpose : Platelet rich plasma (PRP) is an autologous material with many growth factors, such as BMPs, PDGF, $TGF-{\beta}_1$, $TGF-{\beta}_2$, VEGF, and IGF, facilitating bone healing process. The prominent osteoconductive activity and the biodegradable nature of beta-tricalciumphosphate (${\beta}-TCP$) for bone grafts in animal experiments have been reported. The purpose of this study was to evaluate the effect of PRP on the osteogenesis of ${\beta}-TCP$. Materials & Methods : Two artificial calvarial bone defects were made in 32 rabbits which were divided into 2 groups. In one group of 16 rabbits, autogenous bone / ${\beta}-TCP$ was grafted on each side of cranial bone defect. In the other group of 16 rabbits, mixture of ${\beta}-TCP$ and PRP / PRP alone was grafted on each side of the cranial bone defect. The animals were sacrificed at 2, 4, 8, and 12 weeks after surgery. The specimens were harvested and examined histologically and immunohistochemically by the expression of BMP2/4/7, PDGF, VEGF and $TGF-{\beta}_1$. Results : The mean volume of new bone formation was significantly higher at 4, 8, 12 weeks in autogenous graft than that in ${\beta}-TCP$. The BMP2/4 expression was significantly higher at 4 weeks in autogenous bone graft and at 4 weeks in mixture of ${\beta}-TCP$ and PRP and at 12 weeks in ${\beta}-TCP$. The expression of BMP7, PDGF, VEGF and $TGF-{\beta}_1$ showed no significant difference in autogenous, ${\beta}-TCP$, mixture of ${\beta}-TCP$ and PRP, and PRP alone during grafted bone regeneration. Conclusion : The results showed that PRP had no additional value in promoting healing process of ${\beta}-TCP$ grafts.
Cyclosporine A에 의해 과증식된 치은 조직에서 배양된 섬유아세포의 성장인자 발현에 관한 연구
김영면,황경균,이재선,박창주,심광섭,Kim, Young-Muen,Hwang, Kyung-Gyun,Lee, Jae-Seon,Park, Chang-Joo,Shim, Kwang-Sup 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.5
Cyclosporine A (CsA) is a powerful immunosuppresive agent used to prevent graft rejection of organ and treat autoimmune disease. One of the major side effects associated with CsA treatment is the development of gingival overgrowth. The purpose of this study was to investigate the mRNA expression and association of the several growth factors in gingival overgrowth induced by CsA, respectively. Gingival fibroblasts were obtained from gingival tissues of healthy donor and the patients treated with CsA. The cultured gingival fibroblasts were incubated with increasing concentrations of CsA for 24 hours, and the expression of MMP-1, TIMP-1, $TGF-{\beta}_1$, p21 were determined by reverse transcription-polymerase chain reaction (RT-PCR). The expressions of MMP-1 was slightly increased according to the concentration of treated CsA, but there was no statistical significance. TIMP-1 showed the increased expression at the CsA concentration of 250 and 500 ng/ml and significantly decreased at the CsA concentration of 750ng/ml. $TGF-{\beta}_1$ showed the increased expression at the CsA concentration of 500 and 750 ng/ml. The expression of p21 was not changed significantly. We concluded that the gingival hyperplasia induced by CsA was more related with $TGF-{\beta}_1$ than MMP-1 or TIMP-1 on gingival collagen metabolism in patients treated with CsA.
Cyclosporine에 의한 치은증식에서 성장인자들의 발현연구
김용재,황경균,오영,백승삼,심광섭,Kim, Young-Jae,Shim, Kwang-Sup,Hwang, Kyung-Gyun,Oh, Young,Paik, Seung-Sam 대한악안면성형재건외과학회 2005 Maxillofacial Plastic Reconstructive Surgery Vol.27 No.5
Cyclosporine A(CsA) is a powerful immunossuppresive agent used to prevent graft rejection of organ and treat autoimmune disease. One of the major side effects associated with CsA treatment is the development of gingival overgrowth. The purpose of this study was to evaluate the expression and association of the several growth factors in gingival overgrowth induced CsA using by immunohistochemical technique. Normal tissues as control were obtained from healthy normal gingivae and overgrowth gingival tissues as experiments were obtained from the patients taken the CsA. The expressions of the MMP-1, TIMP-1, TGF$\beta$-1, p21, p53, PCNA were evaluated by immunohistochemical technique. The more overgrowth was detected at the epithelial and connective tissue area in experimental group. The MMP-1, TGF$\beta$-1, p21, p53, PCNA expressions were significantly increased in experimental group. The TIMP-1 expressions was not significantly increased in experimental group. We could conclude that the gingival overgrowth induced CsA was related with the collagen matabolism in connective tissue and also the production of the growth factor from epithelial tissue.
Delaire 변법을 이용한 편측 불완전 구순열 환자의 기능적 일차 봉합술: 증례보고
이병하,박창주,황경균,심광섭,정필훈,서병무,Lee, Byung-Ha,Park, Chang-Joo,Hwang, Kyung-Gyun,Shim, Kwang-Sup,Choung, Pill-Hoon,Seo, Byoung-Moo 대한구순구개열학회 2008 대한구순구개열학회지 Vol.11 No.2
The outcome of primary surgery for cleft lip is judged by its effects on the quality of oro-facial function and development. Many surgical techniques have been tried to obtain better results, however, Delaire introduced a technique of functional closure of the lip and nose, based on the findings of no true hypoplasia in the tissues either side of the cleft. In a seven-month-old Asian male patient with unilateral incomplete cleft lip, we carried out the primary closure by modified Delaire's technique. With no alveolar bone graft, the vertical incision on the nasal base was omitted in this patient because of his acceptable symmetry of nose. Also, a small Z plasty was added on the non-cleft side. The V-shaped incisions, whose notch was located on each side of the red vermilion, were designed and beveled incisions were performed for the rehabilitation of lip length and thickness, considering the postoperative wound contracture. We assured that this modification of Delaire's technique could be applied for various cases of primary closure of incomplete cleft lip.
치과 국소마취와 관련된 하치조신경과 설신경 손상에 대한 연구
이병하,임태윤,황경균,서민석,박창주,Lee, Byung-Ha,Im, Tae-Yun,Hwang, Kyung-Gyun,Seo, Min-Seock,Park, Chang-Joo 대한치과마취과학회 2010 Journal of Dental Anesthesia and Pain Medicine Vol.10 No.2
Background: Damages of trigeminal nerve, particularly inferior alveolar nerve and lingual nerve, could occur following dental procedures. In some cases, nerve damage may happen as a complication of the local anesthetic injection itself and not of the surgical procedure. Methods: From September 2006 to August 2010, 5 cases of inferior alveolar nerve and lingual nerve damages, which were assumed to happen solely due to local anesthesia, were reviewed. All cases were referred to Division of Oral and Maxillofacial Surgery, Department of Dentistry, Hanyang University Medical Center for legal authentication in the process of criminal procedure. Results: In all five cases, patients complained of altered sensation occurred in the distribution of the inferior alveolar or lingual nerve following block anesthesia. The local anesthetics were 2% lidocaine with 1 : 100,000 epinephrine and the amount of local anesthetics, which were used during injection, were varied. Most of patients experienced the electric stimulation during injection. Recovery was poor and professional supportive care was mostly absent. Conclusions: Dental practitioners should consider that the surgical procedure caused the trigeminal nerve damage, however, dental local anesthesia for inferior alveolar nerve and lingual nerve could be one of the causes for damages. The various mechanisms for nerve damages by local anesthesia are thoroughly discussed.