http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
하악 제3대구치 발치의 결정에 관한 재고찰 - 발치 현황과 영향 인자를 중심으로
박원서(Wonse Park),김진학(Jin-Hak Kim),강상훈(Sang-Hoon Kang),김문기(Moon-Key Kim),김봉철(Bong-Chul Kim),최지욱(Ji-Wook Choi),이상휘 대한구강악안면외과학회 2011 대한구강악안면외과학회지 Vol.37 No.5
Introduction: Third molar extraction is one of the most common procedures in oral and maxillofacial surgery. The impacted third molar causes many pathological conditions, such as pericoronitis, caries, periodontitis, resorption of adjacent teeth, and cyst or tumors associated with impacted teeth. Extraction is often considered the treatment of choice for impacted lower third molars. On the other hand, imprudent extraction of deeply impacted third molars can cause permanent complications, such as inferior alveolar nerve damage. Therefore, guidelines for the extraction of lower third molars should be set to prevent embarrassing complications. This study examined the indication and current trends of the extracted lower third molars in the dental hospital of a dental college. Materials and Methods: 557 extracted third molars were evaluated at the department of oral and maxillofacial surgery of Yonsei University. The chief complaint, diagnosis, age and degree of impaction were analyzed to determine the tendency for the extraction of asymptomatic lower third molars. Results: The percentage of asymptomatic third molars was 40.8%. In cases of full impacted tooth or full erupted tooth, the percentage of asymptomatic teeth was more than 50% (52.4% and 54.3, respectively). Among those partially impacted teeth, 73.1% of them showed symptoms, such as pain, tenderness and swelling. In terms of age, pericoronitis was evident at a younger age, and dental caries/periodontitis was the main cause of removal in those aged over 50. Twenty nine cases (1.6%) had teeth associated with pathological changes Conclusion: The incidence of pathological changes to the lower third molar was relatively low. Surgical extraction is recommended in cases of partially impacted teeth. In Korea, the incidence of asymptomatic third molar extraction was relatively higher than in European countries. More careful attention would be desirable to consider the risks and benefits of lower third molar extraction.
박원서(Wonse Park) 대한치과의사협회 2018 대한치과의사협회지 Vol.56 No.1
Dental local anesthesia is important procedure for the elimination of pain during dental treatment. However, the pain during local anesthesia is one of the main source of fear to the patients. The cause of pain during dental local anesthesia includes soft tissue damage during penetration of the oral mucosa, pressure from the spread of the anesthetic solution, temperature of anesthetic solution, low pH of anesthetic solution, and the characteristics of the drug. Several concepts and devices introduced to date to reduce the pain during local anesthesia for dental treatment. In this report, devices that can reduce the pain during local anesthesia will be discussed.
박원서,백윤재,도레미,김기덕,정복영,방난심,윤희정,유태민,Park, Wonse,Baik, Yoon-Jae,Doh, Re-Mee,Kim, Kee-Deog,Jung, Bock-Young,Pang, Nan-Sim,Yun, Hee-Jung,You, Tae-Min 대한치과마취과학회 2012 Journal of Dental Anesthesia and Pain Medicine Vol.12 No.3
Background: The major goal of dental management before and after liver transplantation is the prevention of bacteremia from an oral source that could lead to systemic infection. However dental treatment in liver transplant patients have the risk of infection and bleeding. so it is needed special dental consideration. Methods: 42 liver transplant candidates who visited department of Advanced General Dentistry in Yonsei University College of dentistry from March 1, 2010 to February 29, 2012 were selected. The clinical data of those patients were analyzed; coagulation status such as PT, INR, aPTT, platelet count before and 6 months after liver transplantation, dental infectious foci, time interval between dental visit and operation date of liver transplantation. Results: Before liver transplant, the patient's PT and INR was prolonged, and the platelet count was lower than normal range. But 6 months later from liver transplantation, most of the figures turned into a normal range. The dental infection foci were chronic periodontitis, dental caries, chronic apical periodontitis, root rest et al but we did extraction of 6 root rest before liver transplantation and postponed other treatment after liver transplantation due to bleeding and infection risk of patients. Because of insufficient interval between dental visit and operation date, 64.3% of patients could not finish the dental treatment. Conclusions: The patients before liver transplantation have the risk of bleeding. The treatment of those patient should be removal of only factors that can cause dental infections after transplantation and other treatment must be postponed until the stable period of the transplant that patient's condition has improved.
하악 좌측 제1소구치 부위의 임플란트 식립을 위한 하치조신경 국소마취 후 발생한 Paresthesia
조지헌,이강희,방난심,박원서,김기덕,정복영,Jo, Ji-Hun,Lee, Kang-Hee,Pang, Nam-Sim,Park, Wonse,Kim, Kee-Deog,Jung, Bock-Young 대한치과마취과학회 2013 Journal of Dental Anesthesia and Pain Medicine Vol.13 No.2
Most of the dental treatments have been routinely performed under the local anesthesia and the effectiveness has also been proved safe. However, even not frequently dentists face some complications associated with the local anesthesia. In this report, the experience of the paresthesia after mental nerve block anesthesia for an implant placement of the mandibular premolar was presented to raise awareness of the complications related with local anesthetic procedure and to discuss about the causes, the proper treatments and the preventive approach of the paresthesia.
컴퓨터를 이용한 속도 조절형 치과 국소마취 기구: 문헌고찰
김영진,이준형,이강희,김기덕,정복영,방난심,박원서,Kim, Young-Jin,Lee, Jun-Hyung,Lee, Kang-Hee,Kim, Kee-Deog,Jung, Bock-Young,Pang, Nan-Sim,Park, Wonse 대한치과마취과학회 2013 Journal of Dental Anesthesia and Pain Medicine Vol.13 No.4
Background: Today, there are computer controlled local anesthesia devices used clinically. The main principle is to control injection speed by computer aided system, and it relieves pain. However, there are few objective data considering this subject. In this literature review, we researched studies about computer controlled anesthetic delivery. We compared pain control effect of computer controlled to conventional local anesthetic syringe system. Methods: A bibliographic search in PubMed was performed and we reviewed original articles. Results: There were 18 publications that compared pain control effect of computer controlled to conventional system. There were 8 articles reported of children, similar pain control effect was found in 7 of them. One study showed superior pain control effect of computer controlled anesthetic delivery. For adults, 10 studies showed superior pain control effect in computer aided system. Conclusions: Computer controlled anesthetic delivery has similar or superior pain control effect compared to conventional local anesthetic syringe system. For both children and adults, computer controlled anesthetic delivery could be clinically useful, still it may be more effective for adults.
항응고제 복용 환자에서 저분자량 헤파린을 사용한 구강 내 소수술
황세영,윤희정,방난심,정복영,김기덕,김형준,박원서,Hwang, Se-Young,Yun, Hee-Jung,Pang, Nan-Sim,Jung, Bock-Young,Kim, Kee-Deog,Kim, Hyung-Jun,Park, Wonse 대한치과마취과학회 2012 Journal of Dental Anesthesia and Pain Medicine Vol.12 No.2
Anticoagulation therapy with warfarin sodium is used to reduce the risk of thromboembolic events in patients with valvular heart disease, prosthetic heart valve, recurrent myocardiac infarction, etc. To keep anticoagulation state and minimize bleeding risk, patients with high risk of thromboembolism have been usually hospitalized for heparinization before oral surgery like extraction. However, this protocol requires time and high expense because of the long period of hospitalization and this is why low-molecular-weight heparin (LMWH) therapy is receiving attention in medical field as well as dentistry. LMWH has several advantages over unfractionated heparin (UFH) including predictable anticoagulant response which makes coagulation monitoring unnecessary in most patients and longer half-life than heparin which enables the patients to give themselves a subcutaneous injection once or twice daily. These advantages of LMWH make patients get oral surgery on an outpatient basis so that they can save time and cost. This case report introduces the use of LMWH in dental surgery and suggests proper use of LMWH. Though LMWH bridging therapy is widely used most of the previous studies are observational studies. Therefore randomized controlled trials are necessary to evaluate the safety and efficacy of LMWH bridging therapy.
김경섭(Kyeong-Seop Kim),신승원(Seung-Won Shin),이세민(SeMin Lee),정진선(Jin-Sun Jeong),박원서(Wonse Park),김기덕(Kee-Deog Kim) 대한전기학회 2011 전기학회논문지 Vol.60 No.6
In this study, we propose the unsupervised image segmentation algorithm to estimate dental plaque accumulations on digital imaging with methylene blue disclosed plaque. With this aim, RGB color plane is mapped into HSI coordinates and the circular histogram of Hue is reconstructed by applying Otsu’s threshold level. The histogram distribution on Saturation features is also analyzed by maximizing the variance between a plaque candidate and non-plaque one. The dental plaque regions are resolved by applying the composite decision logics based on the threshold level of Hue and Saturation.