THE CLINICAL STUDY ABOUT THE CORRELATIONS BETWEEN THE CHEWING MOVEMENTS AND THE DENTAL ARCH SHAPES

Byung-Woan Jo(조병완),Heon-Soo Chang(장헌수),Jong-Pil Kim(김종필) 대한턱관절교합학회 1995 구강회복응용과학지 Vol.11 No.1

In-Ceram Alumina Core와 In-Ceram Spinell Core의 분광반사율의 차이에 대한 연구

조병완(Jo Byung Woan) 대한치과의사협회 1996 대한치과의사협회지 Vol.34 No.10

치아형태를 고려한 지대치형성

조병완,Jo, Byung-Woan 대한심미치과학회 2000 Journal of the Korean Academy of Esthetic Dentistr Vol.9 No.1

치아형태라고 하면 따분하고 재미없는 것으로 생각하기 쉽지만, 치과임상에서 아주 중요한 기초를 형성하고 있다. 지대치형성은 치과보철수복의 첫 단계로서, 좋은 지대치형성은 좋은 보철물로 연결된다. 또한 치과보철 수복의 대부분은 원래의 치아형태수복에 맞추어져 있어서, 치아형태와 지대치형성은 많은 상관성을 가지고 있을 것이라고 유추해 볼 수 있다. 그러나 통상적으로 알고 있는 치아형태는 교합변형태로만 인식하고 있어서, 지대치형성시 치아형태가 큰 도움을 주지는 못하는 실정에 있다. 물론 교합면형태도 중요하지만 그외의 여러형태도 치과임상에 있어서 결코 무시할 수 없다. 필자는 지대치형성에서 고려해야 할 치아형태와 임상적 중요성에 대해서 언급하여 치과의사선생님들의 임상에 도움을 주고자 한다.

저작운동에 미치는 치열궁형태의 영향에 관한 연구 II. 저작운동의 분석에 대하여

조병완,Jo Byung-Woan 대한치과보철학회 1994 대한치과보철학회지 Vol.32 No.4

Using Sirognathograph Analyzing System, the patterns of chewing movement were analyzed into opening phase and closing phase, each phase to frontal plane, horizontal plane, and sagittal plane by maruyama's classification. In opening phase, the chewing patterns of frontal plane were classifed into Chopping Opening, Grinding Opening, Concave Opening, Lateral Shift Opening, Vertical Guide Opening, Convergence Opening. Those of horizontal plane were classified into Chopping Opening, Grinding Opening, Concave Opening, Protrusive Shift Opening, Posterior Guide Opening, Convergence Opening. Those of sagittal plane were classified into Normal Opening, Protrusive Shift Opening, Vertical Guide Opening, Convergence Opening. In closing phase, the chewing patterns of frontal plane were classified into Normal Closure, Concave Closure, Lateral Shift Closure, Lateral Guide Closure, Vertical Guide Closure, Convergence Closure, Those of horzontal plane were classified into Normal Closure, Concave Closure, Lateral Shift Closure, Protrusive Shift Closure, Lateral Guide closure, Posterior Guide Closure, Convergence Closure. Those of sagittal plane were classified into Normal Closure, Protrusive Shift Closure, Vertical Guide. Closure, Convergence Closure. Results were summarized as follows : 1. Opening phase in chewing movement The Normal Openings in 3 planes(frontal, horizontal, sagittal), the Concave Openings in frontal plane and horizontal plane, the Vertical Guide Opening in frontal plane and the Posterior Guide Opening in horizontal plane were many observed. 2. Closing phase in chewing movement The Concave Closure in frontal and horizontal plane, the Normal Closure in 3 planes (frontal, horizontal, sagittal), the Concave Closure in horizontal plane were many observed.

In-Ceram Spinell Crown의 제작법과 임상적 응용

조병완,Jo, Byung-Woan 대한심미치과학회 1997 Journal of the Korean Academy of Esthetic Dentistr Vol.6 No.1

By the concerns of esthetic restoration were increased recently. many all ceramic crowns were developed. But they except In-Ceram Alumina were used only single crown. In-Ceram Alumina, developed by Dr. Sadon, was revealed to have high flexural Strength(450MPa). So it could be used not only anterior bridges but also posterior bridges. But In-Ceram Alumina was seen to be opaque, a little green color in transillumination light by high content of alumina oxide(85%). So new all ceramics with high strength and high translucence were needed. Spinell($MgAl_2O_3$) have a high melting point, high flexural strength, low heat conductivity, high light conductivity. In-Ceram Spinell offers glasslike light transmission by using the spinell cores instead of the alumina cores. And they have a high translucency like to natural tooth, an excellent margin integrity and a high strength(350MPa). The purposes of this study are 1) to know about the construction method of In-Ceram Spinell System, 2) to investigate the its clinical possibiliy through patients and literature reviews.

Celay System을 이용한 In-Ceram Alumina 3 Unit Bridge제작법

조병완,Jo, Byung-Woan 대한심미치과학회 1996 Journal of the Korean Academy of Esthetic Dentistr Vol.5 No.1

In nowdays many dental CAD/CAM system were developed. Among those only Cerec and Celay were used globally as clinical application. Celay is a machinable ceramic system that is capable of milling inlays, onlays, and veneers from prefabricated industrial ceramic blocks(Vita Celay Blanks). The advatages of Celay are to simplify the manufactures and to save the processing time. For esthetics In-Ceram Alumina bridges were introduced into maxillary anterior restoration. They have a high strength, a high translucency and an excellent marginal adapation. But the laboratory processes are very difficult and complicated. So the construction of In-Ceram Alumina bridge combined with celay system was desgined. The patient is a 28 year old age male. The chief complain is missing of maxillary left central incisor. He wants to restore anterior bridge for esthetically. The Alumina bridge framework was constructed easily by celay system. Glass ilfiltration was occurred. After that, vitadura-${\alpha}$porcelain build up was occurred by conventional method. The translucency of In-Ceram Alumina 3 unit bridge revealed to be superior to that of porcelain fused to metal bridge. So we report it with clincal case and literature reviews.

Effect of Seasons on the Efficiency of Ovum Pick-up Derived Embryo Production

Jong-In Jin,Byung-Hyun Choi,Seong-Su Kim,Hyun-Tae Jo,Kyu-Woan Cho,Du-Won Sun,Dae-Hyeop Cha,Jung-Gyu Lee,Il-Keun Kong 한국동물생명공학회(구 한국동물번식학회) 2013 발생공학 국제심포지엄 및 학술대회 Vol.2013 No.1

In-Ceram Alumina Bridge Restoration의 단기예후에 관한 임상적연구

조병완,박재범,안재진,Jo, Byung-Woan,Park, Jae-Bum,Ann, Jye-Jynn 대한치과보철학회 1997 대한치과보철학회지 Vol.35 No.3

All ceramic restorations except In-Ceram Alumina system gave a good esthetics and an exellent marginal fidelity. The flexural strength of them had about 150MPa, so the indication is only single crown. By using In-ceram Alumina System(450Mpa), it is thought to be possible to construct bridge for its high flexural strength. But the prognosis is unclear, The purposes of this study are to clear short term prognosis of In-Ceram bridge restorations, to elucidate its clinical significance. Among 22 In-Ceram Bridge restored in our department, 11 In-Ceram bridges with follow up were used. The period of placement is from 1 to 18 months. The results were as follows : 1. Among follow up 11 bridges, 2 bridges were fractured. One is 4 unit in maxillary lateral incisors, the other is 3 unit bridge in maxillary canine and premolar. Including 11 bridge without follow up, failure rate is very low(2/22). 2. The fracture sites are connector areas between abutment and pontic. To maintain In-Ceram bridge for long term period, it is needed to remove the nonphysiologic occlusal force and to have sufficient thickness of alumina core. For estabilishing clinical use of In-Ceram bridges, it is thought to need clinical research during long term period.

교합평면이 악구강계에 미치는 영향에 대한 임상적 연구 I. Panoramic View를 이용한 교합평면의 검토

조병완,안상헌,김종필,Jo, Byung-Woan,Ahn, Sang-Hun,Kim, Jong-Pil 대한치과보철학회 1995 대한치과보철학회지 Vol.33 No.4

In clinical prosthetic dentistry the occlusal planes were represented to the dental arch form sagittally and composed of the occlusion morphologically. From now on the determinations of the occlusal planes were done through the facebow transfer and the cephalometric radiography, but they were not exact method for the diagnosis of the stomagnathic function. The purpose of this study is to examine the sagittal characteristics of occlusal planes using panoramic view between the normal subjects and the subjects with stomatognathic dysfunction. 60 normal subjects and 16 subjects with stomatognathic dysfunction were slectec for this investigation. We measured the inclination of occlusal planes to Frankfurt Horizontal plane. The occlusal planes were divided into 4 groups : 1) The plane between the midpoint of upper central incisor and the mesiobuccal cusp of upper 1st molar, 2) The plane between the midpoint of upper central incisor and the mesiobuccal cusp of upper 2nd molar, 3) The plane between the midpoint of upper central incisor and the distobuccal cusp of upper 2nd molar, 4) The plane between the mesiobuccal cusp of 1st molar and the distobuccal cusp of 2nd molar. The results were as follows : 1) The occlusal planes could be determined very easy by using panoramic view, 2) Among the angles between the occlusal planes and the FH plane, the angles related with the 2nd molar were more steep than those of the 1st molar. The angle between the 1st molar and the 2nd molar is the most steep in the other angles. 3) In the angles between occlusal planes and FH plane, the subjects with stomatognathic dysfunction were more significant steep(p<0.05) than the normal subjects.

저작운동에 미치는 치열궁형태의 영향에 관한 연구 III. 치열궁형태와 저작운동과의 관련성에 대하여

조병완,김종필,장헌수,안상헌,안재진,Jo Byung-Woan,Kim Jong-Pil,Chang Heun-Soo,Aha Sang-Hun,Ahn Jae-Jin 대한치과보철학회 1994 대한치과보철학회지 Vol.32 No.4

According to the classification of dental arch form and the analysis of patterns of chewing movement, the patterns of chewing movement in each group were evaluated and compared with those of the normal group. Results were summarized as follows ; 1. Opening phase in chewing movement In the group which the maxillary second molar positionsbuccal side, the chewing patterns which have the Vertical Guide Openings in frontal plane, the Posterior Guide Openings in hjorizontal plane were observed. In the group which the maxillary premolars position lingual side, the chewing paterns which have the Protrusive Shift Openings in horizontal plane and sagittal plane were observed. 2. Closing phase in chewing movement. In each group except for the normal group, the chewing patterns which have the Concave Closure in frontal plane and in Horizontal plane were observed. In the group which the maxillary premolars position buccal side, the chewing patterns which have the Lateral Guide Closure in frontal plane and in horizontal plane, the Vertical Guide Closre in sagittal plane were observed: From the results, as the characteristics of the dental arch form have appeared in chewing movement, the close relationships were found between dental arch form and chewing movement. It is suggested that the evaluation of dental arch form is effective in the diagnosis of function of stomatognathic system.