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약관절강내 천자술시 히알루산(Hyaluronic acid) 사용에 대한 임상적 연구
권병곤,김재승,여환호 大韓顎顔面成形再建外科學會 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.4
To compare the effect of hyaluronate and dexamethasone on the temporomandibular joint arthrocentesis the author investigated 22 temporomandibular joint disorder(TMD) patients with pain and limitation of mouth opening who visited at the Department of Oral and Maxillofacial Surgery. Chosun Dental Hospital and were made a diagnosis as Wilkes stage Ⅲ or Ⅳ of TMJ internal derangement clinically and radiographically. The two groups consisted of 10 patients with injection of sodium hyaluronte 10mg(Artz)(hyaluronate group) on the upper joint space of the affected temporomandibular joint 5 times at intervals of a week after arthrocentesis, and 12 patients with injection of dexamethasone(Oradexon) at a time(dexamethasone group). Maximum mouth opening, pain value and satisfaction value during mastication were assessed on a visual analog scale before arthrocentesis and after 6 months. Then the within-group and between-group differences were evaluated in the obtained data and the clinical success rate of each group was calculated according to our success criteria. The results were as follows. 1. the mean of maximum mouth opening before arthrocentesis and after 6 months in the hyaluronate group were 24.9mm and 39.0mm respectively, and those before arthrocentesis and after 6 months in the dexamethasone group were 25.7mm and 41.3mm respectively. 2. The mean of pain value on a visual analog scale in the hyaluronate group before arthrocentesis and after 6 months were 6.7 and 1.8 respectively, and those in the dexamethasone group before arthrocentesis and after 6 months were 7.0 and 1.8 respectively. 3. The mean of satisfaction value during mastication on a visual analog scale in the hyaluronate group before arthrocentesis and after 6 months were 2.8 and 7.7 respectively, and those in the dexamethasone group before arthrocentesis and after 6 months were 3.1 and 7.8 respectively. 4. There were statistically significant differences between all meansurements before arthrocentesis and after 6 months(P<0.001), but no difference between all meansurements in the hyaluronate group and those in the dexamethasone group. 5. The over all success rate of the hyaluronate group and the dexamethasone group were 60.0% and 63.6% respectively. In summary, there was significant difference between the effect of hyaluronate and dexamethasone on the temporomandibular joint arthrocentesis but hyaluronate is better than corticosteroid as the injection drug in consideration of the side effect related with repeated injection.
박외철,권병곤 한국산업안전학회 1998 한국안전학회지 Vol.13 No.2
An experimental study on oil absorbent was conducted to investigate the feasibility of utilizing absorbents in oil separation from water-oil mixture for spilt oil recovery. Experiments included investigations of absorptivity and filtering performance of a commercial oil absorbent for different diesel oil concentrations. The measured average absorptivity of the absorbent was above 92% for oil concentrations, 10.15vol% that shows good absorbing performance. Filtering the oil-water mixture, however, was too slow to be used for oil separation. An absorbent baffle system was suggested for oil separation which collects oil particles by increasing contact between the absorbent and oil particles.
구강 연조직 병소의 Nd:YAG laser를 이용한 치료 : 임상 증례보고 CLINICAL CASE REPORTS
김수관,조세인,권병곤,이상호 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.4
The neodymium:yttrium-aluminum-garnet (Nd:YAG) laser is most widely used for treatment of lesions affecting the oral mucosa. A pulsed Nd:YAG laser (SDL-300EN, Samsung Electronics, Korea) with a wavelength of 1.32㎛ was used. In all cases, contact mode was used. Four cases of soft tissue oral lesions are presented to document the clinical aspects. Surgery proceeded without complication and healing was uneventful. This study indicate that the Nd:YAG laser can be used successfully for intraoral soft tissue applications are well tolerated and minimal bleeding.
하악지 시상분할술이 수술후 연조직 변화에 미치는 영향에 관한 연구
정종훈,김수관,권병곤,강태호,이준길,조경안,여환호 朝鮮大學校 口腔生物學硏究所 1999 口腔生物學硏究 Vol.23 No.2
The study investigated the effect of sagittal split ramus osteotomy on soft tissue changes. Ten patients, 6 males and 4 females, were treated with mandibular prognathism at the Depatrment of Oral and Maxillofacial Surgery, college of Dentistry, Chosun University. Patients were measured before surgery, and between 3 months and 6 months after surgery. Comparsions were made to estimate the ratio of soft and hard tissue change after surgery. The results were as follows. 1. The horizontal change of Pogs/Pog, Bs/B, Li/LI, and Ls/LI were 0.88, 0.95, 0.99, and 0.31, respectively. 2. The ratio of Li to Pog was 0.93 : 1 and Ls to Pog was 0.37 : 1. 3. The ratio of Li to LI was 0.99 : 1 and the ratio of Ls to LI was 0.31 : 1. 4. The ratio of the lower anterior facial height changes of the soft tissue (Sn-Mes) to the hard tissue was 1.1 : 1. 5. The ratio of the postoperative soft tissue angular change of facial convexity to the hard tissue angular change of facial convexity was 0.9 : 1.
Healing After Posterior Mandibular Segmental Osteotomy in Dogs
Cho, Kyung-Ahn,Ahn, Young-Jae,Kwon, Byung-Gon,Lee, Chung-Hoon 조선대학교 구강생물학연구소 2002 口腔生物學硏究 Vol.26 No.2
본 연구는 성견에서 하악골 후방분절골절단술후 치유과정에 대채 조직학적, 방사선학적으로 평가하기위해 시행하였다. 성견 12마리를 실험군으로 사용하였으며, 우측 하악 소구치와 구치부 치아들을 발치하였다. 발치한 후 4주째에 수평으로 15㎜, 수직으로 10㎜의 골절단술을 시행하였다. 골절단술후 골절괸은 고정하지 않았다. 성견은 골절단술후 3일, 1주, 2주, 4주, 6주, 8주째pentobarbital을 과량 투여하여 회생시켰다. 표본은 채취후 방사선사진을 촬영하였으며, 표본을 제작 (6∼8㎛)한 후 homatoxylin과 eosin 염색을 시행하였다 평가는 광학현미경과 방사선사진을 이용하여 평가하였다. 골절단면은 6주째에 하악골의 움직임이 없이 골결함히 이루어졌다. 골절단된 부위는 전통적인 골치유양상을 보였다.