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Effect of metal primers and tarnish treatment on bonding between dental alloys and veneer resin
추승식,허윤혁,조리라,박찬진 대한치과보철학회 2015 The Journal of Advanced Prosthodontics Vol.7 No.5
PURPOSE. The aim of this study was to evaluate the effect of metal primers on the bonding of dental alloys and veneer resin. Polyvinylpyrrolidone solution’ tarnish effect on bonding strength was also investigated. MATERIALS AND METHODS. Disk-shape metal specimens (diameter 8 mm, thickness 1.5 mm) were made from 3 kinds of alloy (Co-Cr, Ti and Au-Ag-Pd alloy) and divided into 4 groups per each alloy. Half specimens (n=12 per group) in tarnished group were immersed into polyvinylpyrrolidone solution for 24 hours. In Co-Cr and Ti-alloy, Alloy Primer (MDP + VBATDT) and MAC-Bond II (MAC-10) were applied, while Alloy Primer and V-Primer (VBATDT) were applied to Au-Ag-Pd alloys. After surface treatment, veneering composite resin were applied and shear bond strength test were conducted. RESULTS. Alloy Primer showed higher shear bond strength than MAC-Bond II in Co-Cr alloys and Au-Ag-Pd alloy (P<.05). However, in Ti alloy, there was no significant difference between Alloy Primer and MAC-Bond II. Tarnished Co-Cr and Au-Ag-Pd alloy surfaces presented significantly decreased shear bond strength. CONCLUSION. Combined use of MDP and VBATDT were effective in bonding of the resin to Co-Cr and Au-Ag-Pd alloy. Tarnish using polyvinylpyrrolidone solution negatively affected on the bonding of veneer resin to Co-Cr and Au-Ag-Pd alloys.
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분절골절단술과 교정치료를 동반한 과개교합 환자의 완전구강회복 증례
추승식,조웅래,허윤혁,박찬진,조리라,Chu, Seung-Sik,Cho, Woong-Rae,Huh, Yoon-Hyuk,Park, Chan-Jin,Cho, Lee-Ra 대한치과보철학회 2015 대한치과보철학회지 Vol.53 No.1
과도한 수평 및 수직피개를 가진 과개교합 환자에서 치질의 파괴 및 대합치 정출의 문제를 흔히 관찰할 수 있다. 이는 곧 교합평면의 붕괴와 부적절한 전방유도로 이어지며, 조화로운 교합관계의 회복이 이루어지지 않으면 다수의 치아 상실과 저작기능의 감소를 야기하게 된다. 과개교합환자의 문제를 해결하려면 교정과, 구강외과 및 보철과의 협진이 이루어져야 한다. 본 증례보고는 심한 과개교합을 가진 환자에서 수직교합고경을 증가시킨 후 완전구강회복을 이룬 증례를 보고하고자 한다. 치료는 구외 및 구내검사, 진단 및 치료계획, 진단 납형형성, 분절골 절단술, 교정적 함입 및 보철치료 순으로 진행되었다. 수직고경증가를 동반한 완전구강회복술로 환자의 심미적, 기능적 문제를 해결할 수 있었다. Teeth wear and extrusion of antagonist are commonly observed in deep bite patient having severe vertical and horizontal overlap. These problems cause collapse of occlusal plane and abnormal anterior guidance. Without restoring harmonious occlusion, loss of multiple teeth and decreased masticatory function could not be prevented. To resolve problems associated with deep bite, multidisciplinary treatment including oral surgical, orthodontic and prosthetic treatment should be performed. This clinical report describes the results of increasing occlusal vertical dimension with a full-mouth restoration procedure. The treatment procedures include extraoral and intraoral examination, diagnosis, treatment planning, diagnostic wax-up, segmental osteotomy, orthodontic intrusion and prosthodontic rehabilitation. Full mouth rehabilitation with increasing occlusal vertical dimension can solve esthetic and functional problems.
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