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$ITI^{(R)}$ implant system에 있어서 $Bio-Oss^{(R)}$와 $Bio-Gide^{(R)}$를 이용한 발치 후 즉시 임플란트의 유용성
박관수,윤규호,정정권,신재명,홍성철,전인성,Park, Kwan-Soo,Yoon, Kyu-Ho,Cheong, Jeong-Kwon,Shin, Jae-Myung,Hong, Sung-Chul,Jeon, In-Seong 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.1
In the recent studies, many authors have reported that the success rate of immediate implantation has no difference compared to conventional staged implantation. Although the immediate implantation has many advantages over conventional approach, many clinicians don't seem to practice because they think that most of the extraction sockets will have some bony gab with defects around implant and that this situation makes the result of immediate implantation unpredictable. We clinically analyzed 23 implanted sites of 18 patients treated with immediate implantation in our hospital from September 2003 to January 2004. The $ITI^{(R)}$. dental implant system was used and GBR procedure with $Bio-Oss^{(R)}$. and $Bio-Gide^{(R)}$. was done simultaneously. The pre & post-op. measurements were recorded such as alveolar crest-adjacent tooth CEJ distance, gingival crest-adjacent tooth CEJ distance, existence of periapical lesion, vertical defect around the extraction socket, horizontal defect around the extraction socket, probing depth, radiologic change of alveolar crest height. We report a positive outcome about immediate implantation with review of literatures.
박관수,Park, Kwan-Soo 대한치과의사협회 2019 대한치과의사협회지 Vol.57 No.10
Warfarin is an anticoagulant involved in the production of vitamin K dependent blood clotting factors. Dentists should be familiar with the appropriate assessment methods and considerations for the treatment of patients taking warfarin. Dental surgery with the moderate risk of bleeding can be performed without stopping the drug through preoperative examination of the INR(international normalized ratio) value and evaluation. When performing a surgery with a high risk of bleeding, it is necessary to evaluate whether the drug can be discontinued, what the duration is, and the risk of discontinuation. Hemostasis can be obtained by local methods in most cases of postoperative bleeding in patients taking appropriately adjusted doses of warfarin.
[ $ITI^{(R)}$ ] implant system에 있어서 $Bio-Oss^{(R)}$와 $Bio-Gide^{(R)}$를 이용한 발치 후 즉시 임플란트의 유용성
박관수,윤규호,정정권,신재명,홍성철,전인성,Park, Kwan-Soo,Yoon, Kyu-Ho,Cheong, Jeong-Kwon,Shin, Jae-Myung,Hong, Sung-Chul,Jeon, In-Seong 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.2
In the recent studies, many authors have reported that the success rate of immediate implantation has no difference compared to conventional staged implantation. Although the immediate implantation has many advantages over conventional approach, many clinicians don't seem to practice because they think that most of the extraction sockets will have some bony gab with defects around implant and that this situation makes the result of immediate implantation unpredictable. We clinically analyzed 23 implanted sites of 18 patients treated with immediate implantation in our hospital from September 2003 to January 2004. The $ITI^{(R)}$ dental implant system was used and GBR procedure with $Bio-Oss^{(R)}$ and $Bio-Gide^{(R)}$ was done simultaneously. The pre & post-op. measurements were recorded such as alveolar crest-adjacent tooth CEJ distance, gingival crest-adjacent tooth CEJ distance, existence of periapical lesion, vertical defect around the extraction socket, horizontal defect around the extraction socket, probing depth, radiologic change of alveolar crest height. We report a positive outcome about immediate implantation with review of literatures.
박관수,이용규,박효상,김종배,Park, Kwan Soo,Lee, Yong Gyoo,Park, Hyo Sang,Kim, Jong Bae 대한악안면성형재건외과학회 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.4
The 44 years old man was consulted to our department due to restriction of mouth opening. On radiograph, we found bony expansive lesion at right mandibular ramus and temporal bone that it was suspected malignant tumor. So we had performed incisional bone biopsy at right ramus through skin incision. The result of biopsy was osteosarcoma. Then, he had experienced radiation therapy for the protection of recurrence after several times surgery of nasopharyngeal angiofibroma, 28 years ago. So, we concluded radiation induced osteosarcoma from his radiation therapy history. He had referred to the department of hematooncology because of severe expansion to skull base and was received 4 times chemotherapy with cisplatin and adriamycin, but he was expired just after 4th chemotherapy. Such radiation induced osteosarcoma have relative good prognosis due to rare metastasis from other reports. So if it will early detect from close follow up after radiation therapy, survival rate will rise up. But we missed early detection of our case. So, we report a case of rare radiation induced osteosarcoma. Ly detection of our case.
실험적으로 제작한 Videodensitometer의 디지털 영상처리와 임상적 적용에 관한 연구
박관수,이상래,Park Kwan-Soo,Lee Sang-Rae 대한영상치의학회 1992 Imaging Science in Dentistry Vol.22 No.2
The purpose of this study was to propose the utility which was evaluated the digital image processing and clinical application of the videodensitomery. The experiments were performed with IBM-PC/16bit-AT compatible, video camera(CCdtr55, Sony Co., Japan), an color monitor(MultiSync 3D, NEC, Japan) providing the resolution of 512×480 and 64 levels of gray. Sylvia Image Capture Board for the ADC(analog to digital converter) was used, composed of digitized image from digital signal and the radiographic density was measured by 256 level of gray. The periapical radiograph(Ektaspeed EP-21, Kodak Co., U. S. A) which was radiographed dried human mandible by exposure condition of 70 kVp and 48 impulses, was used for primary X-ray detector. And them evaluated for digitzed image by low and high pass filtering, correlations between aluminum equivalent values and the thickness of aluminum step wedge, aluminum equivalent values of sound enamel, dentin, and alveolar bone, the range of diffuse density for gray level ranging from 0 to 255. The obtained results were as follows: 1. The edge between aluminum steps of digitized image were somewhat blurred by low pass filtering, but edge enhancement could be resulted by high pass filtering. Expecially, edge enhancement between distal root of lower left 2nd molar and alveolar lamina dura was observed. 2. The correlation between aluminum equivalent values and the thickness of aluminum step wedge was intimated, yielding the coefficient of correlation r=0.9997(p<0.00l), the regression line was described by Y=0.9699X+0.456, and coefficient of variation amounting to 1.5%. 3. The aluminum equivalent values of sound enamel, dentin, and alvolar bone were 15.41㎜, 12.48㎜, 10.35㎜, respectively. 4. The range of diffuse density for gray level ranging from 0 to 255 was wider enough than that of photodenstiometer to be within the range of 1-4.9.
방사선조사가 임프란트의 골유착에 미치는 영향에 관한 실험적 연구
박관수,이상래,황의환,Park Kwan-Soo,Lee Sang-Rae,Hwang Eui-Hwan 대한영상치의학회 1999 Imaging Science in Dentistry Vol.29 No.1
The purpose of this study was to investigate the effects of the Co-60 γ irradiation on the osseointegration. 2.0 mm titanium alloy screw implants(Sankin Industry Co. Ltd., Japan) were placed in the tibial metaphysis of the rabbits, bilaterally. The mean length of the implants was 6.0 mm. The right tibia was irradiated with a single dose of 15Gy from 60Co teletherapic machine at 5th postoperative day. The experimental group was irradiated tibia. The control group was nonirradiated tibia. To observe the phase of bone formation, the bone labeling by intramuscular injection of 20mg/Kg of Tetracycline, Calcein, Alizarin red S, was performed. The rabbits were sacrificed on the 1st, 2nd, 4th, 6th, 8th week and the tibia including implants were taken, and then the specimens were examined by the microradiography, light microscopy, and fluorescent microscopy. The obtained results were as follows: 1. There were connective tissue between bone and titanium at 1st week, in both group. Especially, the many empty lacunae without nucleus and obscure cytoplasm in experimental group, were observed. 2. The osteons were observed at 4th week in control group, and at 6th week in experimental group. The bone formation in experimental group was retarded as compared to the control group. 3. In fluorescent microscopy, bone labelling band was observed as linear, arc or concentric shape. Occasionary interrupted labelling band was observed, which is demonstrated bone remodeling. 4. In microradiographic examination, the radiolucent image was found between bone and implant with widening of bone marrow spaces as compared to the control group.
임상원저 : 골격성 3 급 부정교합 환자에서 하악골상행지 시상분할골절단술후 상순과 하순의 연조직 변화에 관한 연구
박관수(Kwan Soo Park),전인성(In Seong Jeon),윤규호(Kyu Ho Yoon),김희광(Hee Kwang Kim),정정권(Jeong Kwon Jeong),김태열(Tae Youl Kim) 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.6
Purpose: The prediction of profile change as a result of orthognathic surgery remains a problem during preoperative planning because of the difference relative movements of the hard and soft tissues. This study was performed to predict the changes of upper and lower lips after BSSRO with non-rigid fixation. Material and Methods: 15 patients with skeletal Class Ⅲ malocclusion treated by bilateral sagittal split ramus osteotomy (BSSRO) and mandibular setback were selected for analysis. Cephalometric data of presurgery and postsurgery 12 months were used. Wilcoxon signed rank test, calculation of Spearmans correlation rho and simple regression analysis were performed to predict the relations between hard tissue changes and soft tissue changes. Results: The horizontal change of hard tissue Pogonion and those of lower lips showed high correlation and the ratios were from 71% to 84%. The horizontal change of hard tissue Pogonion and those of chin showed high correlation and the ratios were from 90%to 92%. The horizontal change of hard tissue Pogonion and those of upper lips showed moderate correlation and the ratios were from 7% to 18%. Conclusion: This study suggests that the changes of lower lips are highly affected by the hard tissue change of mandible and those of upper lips are moderately affected. In comparison with other studies, no significant differences were found among the fixation methods.
박관수(Gwan-soo Park),이향범(Hyang-beom Lee),배동진(Dong-jin Bae),한송엽(Song-yop Hahn),최홍순(Hong-soo Choi),홍정표(Jung-pyo Hong),주관정(Kwan-jeong Joo) 한국자기학회 1992 韓國磁氣學會誌 Vol.2 No.2
The characteristics of electromagnetic devices with permanent magnet depends greatly on the remanence pattern of permanent magnet. So, it is necessary to analyze the pattern of remanence in permanent magnet. This paper presents a finite element analysis of magnetizer considering the nonlinearity and anisotropy of yoke and magnet in magnetizer. The distributions of magnetizations are obtained according to the variations of magnetizing currents for two kinds of magnetizers with different magnetizing poles. It is found that the excessive magnetizing current results in the reduction and polarity reversion of magnetization in the multi-pole magnetizing system where the pole angle is too small. During the design and analyzing of multi-pole magnetizer, it must be considered that there exists an optimal value of magnetizing current and pole angle of magnetizer.
즉시 식립 임플란트 - 합병증을 줄이기 위한 고려 사항
박관수(Kwan-Soo Park) 대한치과의사협회 2020 대한치과의사협회지 Vol.58 No.9
Implant treatment has long been established as the main stream for the recovery of lost teeth. Implant therapy, which began to be practiced under the concept of osseointegration, was performed on the completely healed bone, but implant placement immediately after extraction, which began to be introduced in the 1970s, began to become a widely used treatment modality since the 2000s. However, as with all other procedures, immediate implant placement is not omnipotent. If you are obsessed with the obsession that you need to provide quicker implant treatment to the patients, and if you do it as if you are being chased by time, it is the immediate implant placement that can lead to various embarrassing situations. In this article, to reduce complications, the author will look at some issues that need to be considered when placing implants immediately after extraction.