지르코니아 코아가 전부도재관의 색조에 미치는 영향에 대한 분광측색분석

배아란,백진,우이형,김형섭,최대균,Pae Ah-Ran,Baik Jin,Woo Yi-Hyung,Kim Hyung-Sup,Choi Dae-Gyun 대한치과보철학회 2005 대한치과보철학회지 Vol.43 No.4

Statement of problem : Problem of matching the appearance of porcelain restorations with the patient's natural dentition has always been a concern to dental clinicians. Recently, demands for esthetics, even in restorations requiring strength, has brought a revolution to dentistry and increased use of zirconia. Among the various factors, shade and translucency or the core can significantly affect the overall esthetics of the restoration and should be considered when selecting an all-ceramic system. Purpose : The purpose of this study was to spectrophotometrically evaluate the influence of different zirconia systems and core thickness on the final shade of all-ceramic restorations using the CIEL$^*a^*b^*$ system. Material and Methods: Core specimens (n : 20 per group) of In-Ceram Alumina, In-Ceram Zirconia, Digident CAD/CAM Zirconia, Cercon Zirconia were fabricated 20mm in diameter. 10 specimens of each group were fabricated at core thickness of 0.5mm and 0.7mm. These core specimens were veneered with shade Al & A3 porcelain of the recommended manufacturer. CIEL$^*a^*b^*$ coordinates were recorded for each specimen with a spectrophotometer (Model CM-2600d, Minolta, Japan). Color differences were calculated using the equation ${\Delta}E^*=[({\Delta}L^*)^2+({\Delta}a^*)^2+({\Delta}b^*)^2]^{\frac{1}{2}}$. Results : 1. Specimens of core thickness 0.5mm and 0.7mm did not exhibit clinically perceived color difference. 2. Regarding shade reproducibility, In-Ceram Alumina and In-Ceram Zirconia showed significant difference within each group. 3. Cercon Zirconia group showed the highest $L^*$ value and Digident Zirconia group showed lowest $a^*$ & $b^*$ value. 4. Generally the shade difference between materials was higher in the A3 shade group than in the Al shade group. Conclusion: Within the limitations of this study, there was no color difference after increase in core thickness and every all-ceramic system has color characteristics that clinicians have to consider when selecting materials. Also, manufacturers of different porcelain systems must make every effort to achieve color reproducibility.

論文 : 학질(?疾)의 종류(種類)와 병인(病因)ㆍ병기(病機)에 대한 고찰(考察)

강효진 ( Hyo Jin Kang ),정창현 ( Chang Hyung Jeong ),장우창 ( Woo Chang Jang ),류정아 ( Jeong Ah Lyu ),백유상 ( You Sang Baik ) 대한한의학원전학회(구 대한원전의사학회) 2013 대한한의학원전학회지 Vol.26 No.2

Objective : Malaria(?疾) is a disease that`s main symptom is paroxysm - a cyclical occurrence of sudden coldness followed by rigor and then fever. Since the introduction of the cause and mechanism of malaria(?疾) in the ?Suwen(素問)?, including Cold malaria(寒?), Warm malaria(溫?), Heat malaria(??) and Wind malaria(風?), there has been over 20 different kinds of malaria, each of which are introduced in multiple medical texts. Method : Through comparison between ?Suwen(素問)? and other medical texts, the categories, causes and mechanisms of malaria can be analysed and organized to overview the whole feature of it. Results & Conclusion : External pathogens of malaria(?疾) are wind(風), cold(寒), summerheat (暑), dampness(濕), miasmic toxin(?), pestilence(疫), ghost(鬼). Internal pathogens of malaria(?疾) are dietary irregularities(飮食不節), overexertion and fatigue(勞倦), phlegm(痰), seven emotion(七情). Malaria can be categorized into four groups according to the pathological mechanism that leads to paroxysm. They are latency of disease(伏 氣), external contraction(外感), internal damage(內傷), and combination of disease(合病). Malaria-Paroxysm(?疾發作) occurs when the three following factors collide strongly : defense qi(衛氣), latent qi(伏邪) and external pathogen(新邪). When collision of the three factors takes place in the interior(裏), the body experiences chills. When it takes place in the exterior(表), the body experiences fever. The cyclical occurrence of Malaria-Paroxysm follows the circulation of defense qi.

논문(論文) : 학질발작(학疾發作)의 주체와 기전에 대한 고찰(考察) -『소문(素問), 학론(학論)』을 중심으로-

강효진 ( Hyo Jin Kang ),전상현 ( Chang Hyun Jeong ),장우상 ( Woo Chang Jang ),류정아 ( Jeong Ah Lyu ),백유상 ( You Sang Baik ) 대한한의학원전학회(구 대한원전의사학회) 2012 대한한의학원전학회지 Vol.25 No.3

Objective : I would like to determine the main factors, in other words, the subjects that are responsible for febrile paroxysm and how they interact at the time of onset, based on the 「Discourse on Hak(학)」 chapter of『Huangdi Neijing(黃帝內經)』. Methods : First, the pathological mechanism of the paroxysm was examined as described in the text. Then the subjects in question were analyzed based on the contents of the text. Result : 1. Febrile paroxysm happens when the three factors coincide at the Fengfu(風府). The three elements are as follows: first defense qi(衛氣), second latent qi(伏邪) and third, external pathogen(新邪). 2. Fengfu(風府) is not a specific point, but a region which external pathogen(新邪) passes through during which the defense qi is deficient. Conclusion : Febrile paroxysm is not caused by either an internal pathogen or an external pathogen, but the interaction between the three elements of the internal and external pathogens and the condition of defense qi. Moreover, the site, Fengfu(風府), which the disease is manifested is not a specific point but a more general region where the pathogenic qi has invaded while defense qi has weakened.

치조열 환자의 장골이식술 후 예후 평가

홍진호,소병수,백진아,신효근,Hong Jin-Ho,Soh Byung-Soo,Baik Jin-Ah,Shin Hyo-Keun 대한구순구개열학회 2001 대한구순구개열학회지 Vol.4 No.2

Alveolar cleft exists in 75% of cleft patients, In alveolar cleft patients, alar base is widening, palatal fistular formation, maxillary growth disturbance & tooth loss of adjacent area is raised, Alveolar bone grafting, especially iliac bone grafting, is a general treatment method. As operation timing, bone grafting is classified with primary, early secondary, secondary, & late secondary, Here we report cleft width, marginal bone height, bone resorption rate, grafted shape & bone densities after secondary iliac bone grafting was done in the Dept. of oral and maxillofacial surgery of chonbuk national university hospital. We compared cleft width to bone resorption rate and grafted shape. Also, alveolar bone densities of grafted and contralateral site was compared with Emago 3 package? (Oral Diagonostic System, The Netherlands), The data obtained were analyzed using Spearman's rho coefficients and sign test with SPSS for window, The results were obtained as follows. 1. As alveolar cleft width is increase, bone resorption rate is, too. This relation showed significant difference(P<.01). 2, In proximal & distal area, alvolar cleft width and bone graft contour after bone grafting had a reverse proportional difference. It was not significant difference(P>.05). 3. After 3 month, in bone density results by using Emago 3 package? with periapical standard view, occlusal view & panoramic view, differences between grafted bone and alveolar bone of contralateral site didn't show a significant difference(P>.05). Thus, differences of bone densities in the alveolar bones didn't exist.

A clinical study of temporomandibular dysfunction in cleft lip and palate patients

소병수(Byoung Soo Soh),백진아(Jin Ah Baik),신효근(Hyo Keun Shin) 대한구강악안면외과학회 1995 대한구강악안면외과학회지 Vol.21 No.4

순열구개열은 악안면형태의 이상 및 치아 수의 이상에 따른 부정교합과 부기능악관절운동 등을 초래하며, 이에따른 악관절 기능장애의 발생이 예상된다. 그러나, 순열구개열환자의 악관절기능에 대한 연구는 미흡하였다. 본 연구는 전북대학교 구강악안면외과에서 치료받은 순열구개열환자 30명과 Angle s I class occlusion을 갖고 있는 전북대학교 치과대학 학생 30명을 대상으로 악관절지수, 최대개구량, 악관절잡음, 저작근부압통, 악관절부압통 등의 유무를 조사하여, 다음과 같은 결과를 얻었다. 1. 순열 구개열환자군의 최대 개구량은 46.3±5.1mm, 대조군은 47.5±5.6mm로 나타났으며, 이 두 군간의 유의한 차이는 없었다. (p<0.05) 2. 두개하악장애의 증상은 순열구개열환자군에서 하악운동이상 및 악관절잡읍의 발생빈도가 높았으며, 저작근 및 두경부 근육이상의 발생빈도는 비슷하였다. 3. 순열구개열환자군의 평균기능이상지수, 평균촉진지수, 평균두개하악장애지수는 각각 0.13±0.11. 0.02±0.04, 0.08±0.06으로 나타났으며, 대조군은 각각 0.05±0.06, 0.01±0.03, 0.03±0.04로 나타났다. 4. 이 두군간의 평균기능이상지수와 평균두개하악지수에서 유의한 차이가 있었다.(p<0.05) 5. 순열구개열환자군의 평균두개하악지수는 대조군에 비하여 높게 나타났다. Most patients with a repaired cleft lip and palate show facial growth deficits that can present severe functional and esthetic problems. Temporomandibular dysfunction may occurred as a result of facial deformities and malocclusion in cleft lip and palate patients. The purpose of this study was to evaluate temporomandibular dysfunction in cleft patients and the difference to normal individuals. This study was based on 30 cleft patient subjects and 30 normal subjects with Angle s class I occlusion. We examined maximum mouth opening, signs and symptoms of temporomandibular dysfunction, and craniomandibular index(CMI) in these patients and compared them with control subjects. From this study, the following conclusions may be drawn. 1. The Mean Maximum Mouth Opening in cleft patient subjects was 46.3±5.1 mm and in control subjects, 47.5±5.6mm. There was no significant differencein mean maximum mouth opening between the two subjects.(p<0.05). 2. The most common signs and symptoms of temporomandibular dysfunction in cleft patient subjects are TMJ noise and abnormal mandibular movement. 3. The Mean values of Dysfunction Index(DI), Palpational Index(PI),and Cranioman dibular Index(CMI) were 0.13±0.11, 0.02±0.04, and 0.08±0.06 in cleft patient subjects and in control subjects, 0.05±0.06, 0.01±0.03, and 0.03±0.04. 4. There were statistically significant differences in Mean values of DI and CMI between cleft patients and control subjects.(p<0.05) 5. The Craniomandibular Index observed in cleft patient subjects was higher than that in control subjects.

포스터 전시

강현대,Kang Hyung-Goo(강형구),Kwak Chul-an(곽철안),Gu Hyunjin(구현진),권재민,Kim Gun-soo(김건수),Kim Kyung-lae(김경래),KIM KYUNG WON(김경원),KIM Do-Hoon(김도훈),Seong Ah Kim(김성아),Kim Soo-Jin(김수진),김정호,김종서,baik eun(백은),윤여항,LEE MI 한국가구학회 2006 한국가구학회 학술대회논문집 Vol.- No.-

하악 전돌증 환자에서 악교정 수술전후의 하악 과두각의 변화에 관한 연구

백진아,오향락,신효근 全北大學校 齒醫學硏究所 1993 전북치대논문집 Vol.11 No.1

The main purpose of the surgical correction of dentofacial deformity is to improve esthetic appearance and masticatory functions. In this study, changes in intercondylar width (ICW) and condylar angulation that occurred following bilateral sagittal split osteotomy and mandibular setback were documented and examined using submentovertex radiography. Also, ICW and condylar angulation of patients group were compared with normal control group. Twenty normal adults and sixteen patients were involved in this study. The results were obtained as follows ; 1. Mean condylar angulation of normal control group (n=20) with normal TMJ function and normal occlusion were 15.96° on Left TMJ and 18.30° on Right TMJ. 2. Mean preoperative condylar angulation of patient group were 17.28° on Lt. TMJ and 18.97° on Rt. TMJ. There was no significant difference between the preoperative condylar angulation (n=16) and normal control group (n=20). 3. Mean postoperative condylar angulation of patient group were 17.88° on Lt. TMJ and 18.97° on Rt. TMJ. There was no significant difference between the pre-and postoperative condylar angulation(P>0.05). 4. Mean ICW of normal control group(n=20) was 107.35㎜ and mean ICW of patient group was 104.28㎜. There was no significant difference between preperative ICW and normal control group. 5. Mean postoperative ICW of patient group was 108.13㎜. There was no significant difference between the pre-and postoperative ICW.(P>0.05) 6. There were no significant differences between pre-and postoperative ICW and condylar angulation of male patients (n=6) and female patients (n=10) groups.

하악지 시상분할 골절단술, 하악지 수직 골절단술, 하악지 기역자 골절단술 악교정술의 비교연구

백진아,이국엽,양명철,고승오,진우정 大韓顎顔面成形再建外科學會 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.6

The orthognathic surgery for esthetic and functional improvement has developed for 150 years. Today, we can expect the better prognosis which is based on the early trial & error and advanced analysis technique. However, conservatism which advocates upholding of traditions and passive changes has been obstacle to scientific modernization as a contemporary co-worker. IVRI, ILRO, IVSRO, IVRO-SSRO, SSRO have been used to orthognathic surgery variously. In this article, we are going to compare IVRO, ILO with SSRO and advocate superiority of SSRO.

시상면 병행에 근거한 신개념의 하악상행지 시상분할 골절단술

백진아,이국엽,오향락,고승오,진우정 大韓顎顔面成形再建外科學會 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.6

Sagittal split osteotomy (SSRO) is an indispensable and most popular operation for correction of mandibular deformity. The procedure was considered of bony contact surface and nerve injury in the early stage. The procedure has undergone continuous surgical modifications for condylar displacement, relapse, psychologic analysis, functional & esthetic improvement, fixation method and postoperative evaluation of soft tissue change over time. In this article, we compared the contemporary operation method with new method which was designed through ramal computed tomography. Now we are going to introduce novel conceptual SSRO namely CNU-SSRO designed by Chonbuk National University and suggest the standardization of pre-existed SSRO.

내측 안와벽 골절의 처치

백진아,오향락,양명락,고승오 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.4

Orbital blowout fractures most often occur following blunt trauma to the periobital region. Medial orbital wall fracture first occur at the weakest point of the orbital wall, lamina papyracea of the ethmoid. Medial orbital wall fractures are isolated or combined type with nasal bone, orbital floor, zygoma, ethmoid and frontal bones. Clinical features of the medial orbital wall fractures include periobital edema and ecchymosis, subcutaneous emphysema, epistaxis, limitation of ocular motion, diplopia, and enophthalmos. Goals of treatment in medial orbital wall fracture are reduction of herniated orbital soft tissues and complete reconstruction of orbital wall. We have experienced patients with isolated medial orbital wall fracture and reconstructed medial orbital walls with Medpor and obtained good results.