1.The effects of intraosseous saline infusion on hematologic parameters of rabbits.
Kyu Nam PARK ; Won Jae LEE ; Ju Il HWANG ; Kee Joong LEE ; Se Kyung KIM ; Byoung Ki KIM ; In Chul KIM
Journal of the Korean Society of Emergency Medicine 1992;3(2):10-15
No abstract available.
Rabbits*
2.EFFECTS OF METHODS AND DURATION OF PREFABRICATION ON THE MATURITY OF OSSEOUS FLAPS : AN EXPERIMENTAL STUDY IN RABBITS.
Jae Ho JEONG ; Hyo Hun KIM ; Byung Chul CHOI ; Sung Ho KIM ; Sang Hyun WOO ; Jung Hyun SEUL ; Jung Soo HONG
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1997;24(4):660-673
No abstract available.
Rabbits*
3.Cephalometric analysis of mandibular growth in rabbits.
Hae Wook LEE ; Sung Tack KWON ; Chin Whan KIM
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1991;18(2):216-221
No abstract available.
Rabbits*
4.The effect of tibial lengthening on the muscle in rabbits: A histopathologic and histomorphometric study.
Duk Yong LEE ; In Ho CHOI ; Chin Youb CHUNG ; Phil Hyun CHUNG ; Sug Jun KIM
The Journal of the Korean Orthopaedic Association 1993;28(3):1305-1319
No abstract available.
Rabbits*
5.Recovery of the vestibular function after unilateral labyrinthectomy in rabbits.
Ki Hyeon ANN ; Hack Jun KANG ; Chul Ho JANG ; Jung Hun LEE ; Sang Won YOON ; Byung Rim PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 1991;34(5):929-935
No abstract available.
Rabbits*
6.Naka-Rushton Equation Parameters in Normal Pigmented Rabbit ERG.
Kee Ha CHUNG ; Jae Hong KIM ; Sang Ha KIM
Journal of the Korean Ophthalmological Society 1995;36(3):473-478
The Naka-Rushton equation, R=R(max) I(n)/(I(n)+K(n)), has been used to describe the luminance-response function of the scotopic electroretinogram. R(max) is the asymptotic value of the b-wave amplitude as a function of stimulus luminance, K is the intensity that produces a b-wave amplitude that is one-half R(max) and n is a dimensionless contant that controls the slope of the function and represents the degree of homogeneity of retinal sensitivity. These three parameters are often used in experimental laboratories, since it can show selective changes in each parameter. The present study describes and compares the parameters of Naka-Rushton equation obtained by using ganzfeld stimuli(R(max)=363+/-32 uv, n=0.86+/-0.06, log K=-2.39+/-0.19 log cd.sec/m2) and direct flash stimuli(R(max)=354+/-28 uv, n=0.80+/-0.06, log K=-2.26+/-0.15 log cd.sec/m2) in 20 eyes of the normal pigmented rabbits respectively. The n values were significantly increased by the ganzfeld light stimuli than by the direct flash stimuli(p<0.05).
Rabbits
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Retinaldehyde
7.Normal Oscillatory Potentials in Rabbits.
Journal of the Korean Ophthalmological Society 1995;36(3):457-465
Ten pigmented raqbits were dark adapted for 30 minutes previously and then exposed to room illumination of 200 lux for 10 seconds. In mesopic adaptation, the oscillatory potentials(OPs) were recorded. The coefficient of variation in the peak latency, time interval, summed amplitude, and amplitude of each individual OP wavelet were obtained. The peak latency showed the smallest coefficient of variation. The summed amplitude of the OPa and the time interval showed smaller coefficient of variation than amplitude of each individual OP component. Therefore the peak latency, summed amplitude, and time interval may be reliable factors to evaluate the OPs. The increase of the light stimulus did not affect the amplitude of O3. However, O1 and O2 tended to increase in amplitude and O4 to decrease as the intensity of light stimulus increased. These facts may suggest that each individual component of OP has different orign. As the intensity of light stimulus increased, the summed amplitude of OPs was increased and peak latency of O1, O2, O3, and O4 were decreased. Time intervals showed no significant changes.
Lighting
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Rabbits*
8.Exophytic bone formation using porous titanium membrane combined with pins in rabbit calvarium.
Young KIM ; Young Hyuk KWON ; Joon Bong PARK ; Yeek HERR ; Jong Hyuk CHUNG
The Journal of the Korean Academy of Periodontology 2006;36(2):273-288
The purpose of this study was to evaluate exophytically vertical bone formation in rabbit calvaria by the concept of guided bone regeneration with a custom-made porous titanium membrane combined with bone graft materials. For this purpose, a total of 12 rabbits were used, and decorticated calvaria were created with round carbide bur to promote bleeding and blood clot formation in the wound area. Porous titanium membranes (0.5 mm in pore diameter, 10 mm in one side, 2 mm in inner height) were placed on the decorticated calvaria, fixed with metal pins and covered with full-thickness flap. Experimental group I was treated as titanium membrane only. Experimental group II,III,IV was treated as titanium membrane with BBM, titanium membrane with DFDB and titanium membrane with FDB. The animals were sacrificed at 8 and 12 weeks after surgery, and new bone formation was assessed by histomorphometric as well as statistical analysis. 1. Porous titanium membrane was biocompatable and capable of maintaining the regeneration space. 2. At 8 and 12 weeks, all groups demonstrated exophytic bone formation and there was a statistical significant difference among different groups only at 12 weeks. 3. The DFDB group revealed the most new bone formation compared to other groups (p<0.05). 4. At 12 weeks, DFDB and FDB groups showed the most significant resorption of graft materials (p<0.05). 5. The BBM was not resorbed at all until 12 weeks. 6. The fixation metal pin revealed excellent effect in peripheral sealing. On the basis of these findings, we conclude that a porous titanium membrane may be used as an augmentation membrane for guided bone regeneration, and DFDB as an effective bone forming graft material. The fixation of the membrane with pin will be helpful in GBR technique. However, further study is required to examine their efficacy in the intraoral experiments.
Rabbits
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Animals
9.Biocompatibility and Bone Conductivity of Porous Calcium Metaphosphate Blocks.
Yong Moo LEE ; Seok Young KIM ; Seung Yun SHIN ; Young KU ; In Chul RHYU ; Chong Pyoung CHUNG
The Journal of the Korean Academy of Periodontology 1998;28(4):559-567
While calcium phosphate ceramics meet some of the needs for bone replacement, they have some limitation of unresorbability and fibrous encapsulation without direct bone apposition during bone remodelling. To address these problem, we developed a new ceramic, calcium metaphosphate(CMP), and report herein the biologic response to CMP in subcutaneous tissue, muscle and bone. Porous CMP blocks were prepared by condensation of anhydrous Ca(H2PO4)2 to form non-crystalline Ca(PO3)2. Macroporous scaffolds were made using a polyurethane sponge method. CMP block possesses a macroporous structure with approximate pore size range of 0.3-1mm. CMP blocks were implanted in 8 mm sized calvarial defect, subcutaneous tissue and muscle of 6 Newzealand White rabbits and histologic observation were performed at 4 and 6 weeks later. CMP blocks in subcutaneous tissue and muscle were well adapted without any adverse tissue reaction and resorbed slowly and spontaneously. Histologic observation of calvarial defect at 4 and 6 weeks revealed that CMP matrix were mingled with and directly apposed to new bone without any intervention of fibrous connective tissue. CMP blocks didn't show any adverse tissue reaction and resorbed spontaneously also in calvarial defect. This result revealed that CMP had a high affinity for bone and was very biocompatible. From this preliminary result, it was suggested that CMP was a promising ceramic as a bone substitute and tissue engineering scaffold for bone formation.
Rabbits
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Animals
10.The effect of Ga-As laser irradiation on the injured peripheralnerve regeneration in rabbits.
Journal of the Korean Association of Oral and Maxillofacial Surgeons 1992;18(1):53-66
No abstract available.
Rabbits*
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Regeneration*