• 대한두개안면성형외과학회지
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• 제10권1호
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• pp.29-32
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• 2009

Purpose: Alloplastic implants, such as $Silastic^{(R)}$, $Supramid^{(R)}$, Porous polyethylene, $Teflon^{(R)}$ have been used to prevent reherniation of orbital tissue and are known to be inert for many years, though complications are infrequently reported many years after their insertion. Complications associated with implants are infrequent, but infection, orbital hemorrhage, implant extrusion, motility restriction, migration of implant causing dacryocystitis, cystic formation have been described. The latter was known as a rare late complication of blow-out fracture repair. Methods: We report the case of a discovery of a intraorbital hemorrhagic cyst which developed after silicon implant insertion. This patient developed diplopia, unilateral proptosis, exophthalmos, vertical dystopia, ectropion 10 years after repair of blow-out fracture. In this case, orbital CT scan revealed intraorbital cyst surrounding the orbital implant. At surgery, a fibrous capsule surrounded the silicon implant and was filled with mucin pools. Results: Proptosis, diplopia, exophthalmos, ectropion, vertical dystopia were resolved after surgical removal of the cyst and implant. Conclusion: This case illustrate that it is important for us to be aware of the complication of cyst formation around the silicon implants.

• Clinics in Shoulder and Elbow
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• 제2권2호
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• pp.178-186
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• 1999

상완골의 대결절 골절 후, 6개월 이상 지속되는 만성견관절 동통을 호소하는 총 23명의 환자에 대해 관절경적 치료를 시행하였고 평균 29개월(22~40개월) 후에 후향적 평가를 시행하였다. 환자군의 연령은 24세에서 61세까지로 평균 39세였으며 남자가 18례 여자가 5례였다. 이중 14례는 단독골절 이였고 9례는 급성전방 불안정성과 연관이 있었다. 단순방사선 전후방 사진상에서 골절의 평균 전이는 2.3mm(0∼4mm)였다. 관절경을 시행하였을 때 모든 환자에게 관절면 쪽으로 치전근개의 부분 파열이 있었고,그 깊이는 Ellman I도에서 Ⅱ도였다. 관절경적 견봉하 감압술과 함께, 파열된 정도에 따라 관절경적 변연 절제술 또는 봉합술을 시행한 후 UCLA 점수로 평가했을 때 20례에서 우수(good) 또는 매우 우수(excellent), 3례에서는 양호(fair)를 나타냈다. 19례에서는 수상 이전 활동으로 복귀하였고, 많은 활동량을 가졌던 환자에서는 활동복귀 정도가 낮았다(p=0.034) 미세하게 전이된 대결절 골절 후에 만성견관절 동통을 호소하는 환자에서는 반드시 회전근개의 부분 파열을 고려해야 하며 이때 관절경적 변연 절재술 또는 봉합술이 적절한 치료법이다.

• 대한치과보철학회지
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• 제42권2호
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• pp.133-141
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• 2004

Statement of problem : Porcelain restorations are widely used in restorative dentistry with a high degree of general success. However, porcelain is brittle and may fracture intraorally. Sometimes a repair may be attempted using composite resin and bonding system available. Color stability of porcelain repair resins affects esthetics and prognosis of prosthesis, so that provides important criteria for the choice of porcelain repair resins. Purpose : The purpose of this study was to investigate the color stability of composite resins used widely as porcelain repair system. Materials and method : Composite resins used for this study were Carisma(Kulzer, Germany), Tetric ceram(Ivoclar, Liechtenstein), Filtek Z250(3M, USA), and Arabesk Top(VOCO, Germany). Thirty disc-shaped specimens($10{\times}2mm$) were fabricated from each composite resin. Color changes of specimens after treatment using thermocycling system(KD-TCS30, Kwang-duk F.A. Korea) and after immersion in methylene blue(0.05% by Wt) were measured with colorimeter(Model Tc-6Fx, Tokyo Denshoku Co.) and obtained data were analyzed. Results and Conclusion: The results obtained from this study were as fo11ows. 1. The color change of Filtek Z250 was lesser than those of Tetric ceram and Arabesk Top after thermocycling (12000 times). 2. All of the composite resins in this study showed increase of color change according to increase of thermocycling frequency. 3. After treatment with methylene blue, the color change of Arabesk Top was greater than those of Carisma and Tetric ceram, and Tetric ceram was more stable than others.

• The Journal of Advanced Prosthodontics
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• 제5권3호
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• pp.248-255
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• 2013

PURPOSE. This study compared the effect of three intraoral repair systems on the bond strength between composite resin and zirconia core. MATERIALS AND METHODS. Thirty zirconia specimens were divided into three groups according to the repair method: Group I-CoJet$^{TM}$ Repair System (3M ESPE) [chairside silica coating with $30{\mu}m$ $SiO_2$ + silanization + adhesive]; Group II-Ceramic Repair System (Ivoclar Vivadent) [etching with 37% phosphoric acid + Zirconia primer + adhesive]; Group III-Signum Zirconia Bond (Heraus) [Signum Zirconia Bond I + Signum Zirconia Bond II]. Composite resin was polymerized on each conditioned specimen. The shear bond strength was tested using a universal testing machine, and fracture sites were examined with FE-SEM. Surface morphology and wettability after surface treatments were examined additionally. The data of bond strengths were statistically analyzed with one-way ANOVA and Tamhane post hoc test (${\alpha}$=.05). RESULTS. Increased surface roughness and the highest wettability value were observed in the CoJet sand treated specimens. The specimens treated with 37% phosphoric acid and Signum Zirconia Bond I did not show any improvement of surface irregularity, and the lowest wettability value were found in 37% phosphoric acid treated specimens. There was no significant difference in the bond strengths between Group I ($7.80{\pm}0.76$ MPa) and III ($8.98{\pm}1.39$ MPa). Group II ($3.21{\pm}0.78$ MPa) showed a significant difference from other groups (P<.05). CONCLUSION. The use of Intraoral silica coating system and the application of Signum Zirconia Bond are effective for increasing the bond strength of composite resin to zirconia.

• 한국임상수의학회지
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• 제35권2호
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• pp.46-49
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• 2018

A common kestrel was admitted to Chungnam wild animal rescue center, having been unable to fly. On the physical examination, the bird was presented with contusion and swelling on its right humerus closed fraction and had pain response. Radiographic examination was explicitly revealed closed fracture on right proximal humerus. Its closed fracture was reduced with tie-in fixator and figure-of-eight tension band, and inserted pins on its right humerus surgery were removed on the $14^{th}$ day after the surgery. As Falco tinnunculus was able to move its wings from Day $21^{st}$ day, its rehabilitation was done at outdoor facility and it was successfully released. Proximal humerus reduction with tie-in fixator and the wire was a success, and this treatment with reference to this study will be surely effective to support the other wildbird's reduction stability.

• 한국임상수의학회지
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• 제28권1호
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• pp.179-182
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• 2011

Two day-old male and 1 month-old female Hanwoo calves presented to Chonbuk Animal Medical Center in Chonbuk National University. Two calves were stepped by mother cow and had right (2 day-old male) and left (1 month-old female) forelimb lameness. The male calf was diagnosed as right radius-ulnar fracture through physical and radiographic examination. The other female calf was diagnosed as left third and fourth metacarpal bone fracture by the same examinations as male calf. Acrylic frame external fixator was used to reduce the fractures. Arcrylic frame external fixator in two calves lasted for 5~6 weeks. After removing the acrylic frame external fixator, radiographic evaluation and physical examination were performed. Fractured radius-ulnar and metacarpal bones were unionized and the calves were able to stand and bear weight. In these two calves, application of acrylic frame external fixator in calf fracture was effective. Acrylic frame external fixator should be considered for the repair of radius-ulnar and metacarpal bone fracture in calf.

• 콘크리트학회논문집
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• 제19권5호
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• pp.569-575
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• 2007

철근콘크리트 구조물의 수명 연장 및 기능 보완을 위하여 콘크리트 면의 보수를 실시할 경우 일반적으로 구조적 내력을 고려하지 않는다. 특히, 표면박락 등의 보수에는 단순하게 모르타르 도포만을 이용하여 보수가 완료되므로 별도의 구조적인 보강 성능을 발휘하지 않는다. 그러나 시공성의 향상 및 균열의 억제를 위하여 철망 등의 재료를 사용할 경우 일정부분 보강의 효과를 얻을 수 있을 것으로 예상되며, 특히, 수로 구조물과 같이 교각 간에 놓여지는 구조요소의 경우 하부면의 보수를 실시할 경우 휨 저항성의 증가를 기대할 수 있다. 따라서 본 연구에서는 크리프 철망에 의한 보수를 실시하고 보수 부위 및 보수 두께에 따른 보강 성능을 확인하고자 하였다. 이를 위하여 두께 150mm, 길이 3,000mm, 너비 600mm 슬래브를 제작하고, 상부 부분 보수, 상부 전면 보수, 하부 부분 보수, 하부 전면 보수, 크림프 철망 보강 유무 등 총 8개 실험 유형을 선택하고 이에 대한 휨 보강 성능 실험을 실시하였다. 분석 결과, 크림프 철망을 보강한 실험체에서 보수 재료의 두께가 증가할수록 항복하중 및 파괴하중은 높아지는 것으로 나타났으며, 동일 조건일 경우 하부면의 보수가 휨 하중에 대한 내력을 증가시킬 수 있는 것으로 나타났다. 또한, 휨 하중을 받는 구조물 중 부분 보수만을 실시할 경우 휨 보강 성능은 기대하기 어려운 것으로 나타났다. 결론적으로 크림프 철망에 의한 보수공법 적용 시 휨 저항성의 증가가 있는 것을 알 수 있었다.

• 한국주조공학회지
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• 제14권6호
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• pp.541-547
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• 1994

The effects of weld repair on the durability in Al-10%Si-0.3%Mg castings were evaluated. The strength and fracture toughness in fusion zone were higher than those in the base metal by rapid cooling of fusion zone after welding. There were no significant differences between fatigue properties in castings and weld repaired specimen as the results of low cycle fatigue and rotating bending fatigue test. Therefore it was concluded that weld repairing did not have any significant effect on the mechanical properties of castings.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집A
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• pp.585-590
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• 2001

Turbine blade is subject to torsional load by torsion-mount, centrifugal load by rotation of rotor and repeated bending load by steam pressure. Turbine with partially cracked blade has normal working condition at initial repair time but vibratory working condition at middle repair time due to crack growth. Finite element analysis on turbine blade indicates that repeated bending load out of all loads is the most important factor on fatigue strength of turbine blade. Therefore, this study shows root mean square roughness has linear relation with stress intensity factor range in 12% Cr steel and can predict loading condition of fractured turbine blade.

• Clinics in Shoulder and Elbow
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• 제17권1호
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• pp.31-35
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• 2014

Pulmonary embolism (PE) is a serious complication that can occur after orthopedic surgery. Most instances of PE in the orthopedic field have occurred after hip or knee arthroplasties or after fracture surgeries. The occurrence of PE related to arthroscopic shoulder surgery is very rare. We report a case of PE that developed after arthroscopic rotator cuff repair, in which the patient did not show preoperatively any remarkable risk factors for PE. We also review the current literature related to this topic.