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하악골 골절환자의 측두하악관절 골변화에 관한 단층방사선학적 연구
나승목,고광준 全北大學校 齒醫學硏究所 1991 전북치대논문집 Vol.9 No.1
The purpose of this study was to aid in the evaluation of prognosis of temporomandibular joint after open reduction of fractured mandible. The author studied the bony changes(remodelling) of 116 temporomandibular joints and facial asymmetry in 58 patients. Subjects were divided into 4 Groups according to the follow up periods after open reduction of fractured mandible. The bony changes and facial asymmetry were observed on lateral tomograms and cephalometric posteroanterior skull radiograms. The results were as follows ; 1. The bony changes of condyles were observed in 56 cases(38 flattening 14 osteophyte, 3 erosion, 1 sclerosis). Flattening was observed in 32.8% (Group Ⅰ 27.8%, Group Ⅱ 37.5%, Group Ⅲ 35.7%, Group Ⅳ 32.1%), osteophyte was observed in 12.1% (Group Ⅰ 11.1%, Group Ⅱ 8.3%, Group Ⅲ 7.1%, Group Ⅳ 21.4%). Erosion and sclerosis were observed in 2.6%, 0.9%, respectively. 2. The bony changes of articular fossa were observed in 18 cases(15.5%). Flattening was observed in 12.1%(Group Ⅰ 2.8%, Group Ⅱ 4.2%, Group Ⅲ 10.7%, Group Ⅳ 17.9%). Sclerosis was observed in 3.4%(Group Ⅰ 5.6%, Group Ⅲ 3.6%, Group Ⅳ 3.6%). 3. The amount of facial asymmetry was 2.81±2.20㎜(Group Ⅰ 3.06±1.93㎜, Group Ⅱ 2.38±2.44㎜, Group Ⅲ 2.74±1.19㎜, Group Ⅳ 2.93±2.93㎜). 4. There was no significant difference between all groups according to bony changes of temporomandibular joints after open reduction of fractured mandibles(X^2-Test, p>0.05).
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B16세포주의 방사선 및 항암제감수성에 관한 실험적 연구
나승목,고광준 大韓口腔顎顔面 放射線學會 1995 Imaging Science in Dentistry Vol.25 No.2
The purpose of this study was to aid in the prediction of tumor cell tolerance to radiotherapy and/or chemotherapy. For this study, cell surviving curves were obtained for murine melanoma B16 cell line using semiautomated MTT assay. 2, 4, 6, 8, 10Gy were irradiated at a does rate of 210cGy/min using ?? Irradiator ALDORADO 8. After irradiation, B16 cell lines(2.5×10⁴cells/ml) were exposed to bleomycin and cisplatin at concentration of 0.2㎍/㎖, 2㎍/㎖ and 20㎍/㎖ for 1 hour respectively. The viable cells were determined for each radiation does and/or each concentration of drug. And they were compared to control values. The obtained results were as follows : 1 .There was significant difference of surviving fraction at 4, 6, 8, 10Gy on B16 cell line(P<0.05). 2. There was significant difference of cytotoxicity between bleomycin and cisplantin at concentration of 0.2㎍/㎖ and 2㎍/㎖(P<0.05) on B16 cell line, but there was no significant difference of cytotoxicity at concentration of 20㎍/㎖ on B16 cell line. 3. There was significant difference of cytotoxicity of bleomycin after irradiation of 2Gy and 10Gy on B16 cell line(P<0.01). 4. There was significant difference of cytotoxicity of cisplatin at concentration of 20㎍/㎖ after irradiation in B16 cell line.
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나승목,이언경,고광준,최은숙 大韓口腔顎顔面 放射線學會 1994 Imaging Science in Dentistry Vol.24 No.2
Early diagnosis and treatment of osteomyelitis provide good prognosis and prevent severe complications. Therefore, it is important to early diagnose and treat before the bony changes are observed in conventional radiograms. Authors experienced three cases of early osteomyelitis, and scintigrams were useful to differentiate them from other diseases. The purpose of this report was to aid in the early diagnosis and treatment of osteomyelitis occurred in the jaws. The characteristic features were as follows: 1. In clinical examination, the patients complained mild pain and localized swelling in the jaws. 2. In radiographic findings, the conventional radiograms showed relatively mild bony changes in the jaws. 3. The more severe periosteal reactions were observed in radiograms in children than in adult patient. 4. It showed marked increased uptake of radioisotopes in all scintigrams. 5. The three phase bone scannings were helpful to differentiate osteomyelitis from soft tissue diseases.
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하악골 골절환자의 측두하악관절 골 변화에 관한 단층방사선학적 연구
나승목,고광준 大韓口腔顎顔面 放射線學會 1991 Imaging Science in Dentistry Vol.21 No.2
The purpose of this study was to aid in the evaluation of prognosis temporomandibular joint after open reduction of fractured mandible. The author studied the bony changes (remodelling) of 116 temporomandibular joints and facial asymmetry in 58 patients. Subjects were dived into 4 Groups according to the follow up periods after open reduction of fractured mandible. The bony changes and facial asymmetry were observed on lateral tomograms and cephalometric posteroanterior skull radiograms. The results were as follows: 1. The bony changes of condyles were observed in 56 cases (38 flattering, 14 osteophyte, 3 erosion, 1 sclerosis). Flattering was observed in 32.8%(Group I 27.8%, Group II 37.5%, Group III 35.7%, Group IV 32.1%). Osteophyte was observed in 12.1%(Group I 11.1%, Group II 8.3%, Group III 7.1%, Group IV 21.4%). Erosion and sclerosis were observed in 2.6%, 0.9%, respectively. 2. The bony changes of articular fossa were observed in 18 cases (15.5%). Flattering was observed in 12.1% (Group I 2.8%, Group II 4.2%, Group III 10.7%, Group IV 17.9%). sclerosis was observed in 3.4% (Group I 5.6%, Group III 3.6%, Group IV 3.6%). 3. The amount of facial asymmetry was 2.81 ± 2.20mm (Group I 3.06 ±1.93mm, Group II 2.38 ± 2.44mm, Group III 2.74 ± 1.19mm, Group IV 2.93 ±2.93mm). 4. There was no significant difference between all groups according to bony changes of temporomandibular joints after open reduction of fractured mandibles (x²-Test, P>0.05).
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순·구개열 환자의 두부규격방사선사진상을 이용한 친자간의 유사성에 관한 연구
이언경,나승목,고광준,조수범 大韓口腔顎顔面 放射線學會 1994 Imaging Science in Dentistry Vol.24 No.2
The purpose of this study was to determine whether any similarity existed in craniofacial morphology between parents and offspring in cleft lip with or without cleft palate. Thirty three measurements of the various regions of cranium and face were obtained from lateral cephalometric radiograms in 28 families comprising 28 fathers, 28 mothers and 28 cleft patients. The measurements of cleft patients were compared with those of their fathers, mothers and midparents. The obtained results were as follows: 1. There were similar measurements between the cleft patients and their father; ramal height(Ar-Go), mandibular angle(∠MP-RP). 2. There were similar measurements between the cleft patients and their mothers; cranial base angle(∠NSBa), relation of maxilla to the cranial base(∠SNA), relation of maxilla to the cranial base(soft tissue:∠BaN"Sn), angle of inferior border of mandible(∠SNL-MP) and convexity of nose apex(soft tissue:N"PrnPog"). 3. There were similar measurements between the cleft patients and their mdparents; ramal height (Ar-Go), cranical base angle(∠NSBa), relation of maxilla to the cranial base(soft tissue:∠BaN"Sn), Y axis angle(∠NSGn) and mandibular angle(∠MP-RP). 4. There was no similar measurements between the cleft patients and their fathers and mothers simultaneously.
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