Although it is well known that the chincup, used to correct a skeletal class III malocclusion in growing children, reduce the mandibular prognathism by arresting the growth of the mandibular length and rotating the mandible posteroinferiorly, the majority of the studies about chincup is focused on condylar head that plays an Important role in mandibular growth. The aim of this study was to evaluate the morphologic change of the mandibular symphysis where extraoral force is applied directly during chincup treatment. The data lot this study were obtained from lateral cephalometric radiographs of 62 growing children(chincup group:32, control group:30) with mixed dentition who had been accepted lot the orthodontic treatment at Chonbuk National University Dental Hospital. The results were as follows : 1. Symphysis height was increased both in chincup therapy group and control group during treatment. Symphysis depth was decreased or maintained the initial values in chin cup therapy group, whereas increased in control group. Posterior symphysis depth was decreased both in chin cup therapy group and control group, but anterior svmphysis detph was increased in control group, whereas decreased in chincup therapy group. 2. Chin depth and chin curvature were increased in control group, whereas maintained or decreased in chincup therapy group during treatment. Chin angle, menton ang1e and symphysis angle were decreased in control group, whereas increased in chincup therapy group. It suggested that bone deposition in pogonion area that occur normally with mandibular growth was supressed by direct contact of chincup. 3. When growing children wear chincup, symphysis morphology was maintained due to inhibition of forward growth at mandibular symphysis. It may be due to the suppression of bone deposition in anterior part of symphysis.
Journal of the Korean Academy of Child and Adolescent Psychiatry
/
v.16
no.2
/
pp.251-260
/
2005
Objectives : This study was performed to evaluate the effects of a mental health program within a mental health model middle school. Methods : Subjects of the study consisted of 748 students from the second grade and third grade students at the middle school chosen for a school mental health program by the Ministry of Education in Jeju. The subjects participated in 12 consecutive sessions of group discussion developed to prevent mental health problems. The authors investigated the effects of the program by evaluating the students with Young's Internet Addiction Scale (IAS), Conners & Wells' Adolescent Self Report Scale(CASS) and Minnesota Multiphasic Personality Inventory (MMPI) before the initial session and after the final session. The data was analyzed by t-test in SPSS PC+ 10.0. The range of significance was p<.05. Results : In MMPI, the percentage of students above clinical range reduced from $12.9\%\;to\;11.0\%$. It reduced in the second grade students, but increased in the third grade students. The scores of paranoia and mania subscales showed a statistically significant reduction. In IAS, the percentage of students above the range of Internee overuse reduced from $16.0\%\;to\;6.8\%$. The percentage of students who showed risk of attention problems in CASS reduced from $22.7\%\;to\;18.3\%$. Also, both IAS and CASS scores showed a statistically significant reduction. The clinical significance of the reduction of IAS scores was within moderate range. Conclusion : The mental health program reduced the percentage of students' risk of mental health problems, internet addiction and attention problems and it was clinically effective on preventing Internet addiction. These results support the effects of a school mental health program to promote students' mental health. The authors suggest to expand this program to other schools, to reconfirm the effect of the program by using proper & specified instruments and to evaluate long-term effect of the program.
Journal of The Korean Society of Inherited Metabolic disease
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v.17
no.1
/
pp.1-10
/
2017
Purpose: This study aimed to investigate the perception and emotional experiences in rare and intractable diseases for caregivers of pediatric patients with mitochondrial diseases in order to provide therapeutic interventions for patients, caregivers, and families. Methods: A total of 83 caregivers of pediatric patients with mitochondrial diseases were recruited from the pediatric mitochondrial disease clinics of the Gangnam Severance Hospital in South Korea. Participants completed the survey about their perception of mitochondrial disease and emotional experiences after the diagnosis, and these clinical data were analyzed accordingly. Results: Surveys from a total of 83 caregivers of patients were analyzed, and the patients' age ranged from 6 to 12 years (33%), followed by ages 1 to 6 years (30%). Children with mitochondrial diseases were between 0 and 0.5 years of age at the time of first symptom onset (43%), and the duration of illness lasted more than 10 years in most cases (42%). Prior to diagnosis of mitochondrial diseases, the amount of awareness the caregivers had was 'Not at all' for both rare and intractable diseases and mitochondrial diseases in 44 cases and 68 cases, respectively. For the caregivers' emotional experiences, the most common initial responses were 'Discouraged/despair', 'Helpless/lethargic', and 'Disconcerted'. 'Anxious', 'Committed to treatment', and 'Responsibility as family members' were the most common emotional responses from the caregivers, followed by 'Disconcerted' and 'Helpless/lethargic'. Conclusion: It is important to consider the level of perception and emotional experiences of caregivers and patients with rare and intractable mitochondrial diseases for planning treatment programs.
Purpose : Acute leukemia with hyperleukocytosis (more than $10^5/mm^3$) is at high risk of early sudden death, usually from intracerebral hemorrhage. Emergency cranial irradiation is a relatively simple approach to solve this the problem. We summarized our experience of cranial irradiation in 24 leukemic children who presented with hyperleukocytosis. Methods and Materials : Between 1990 and 1998, 40 children with acute leukemia presenting with hyperleukocytosis were referred for emergency cranial irradiation. Among these patients, 24 children were evaluable. There were 16 boys and eight girls, their ages ranged from 2 to 13 years (median 9.5 years). The initial leukocyte counts ranged $109,910/mm^3\;to\;501,000/mm^3$. Peripheral blood smear was peformed in all patients and noted the morphology of the blast. Introduction of emergency cranial irradiation was determined by the leukocyte counts (more than 100,000/mm) and the existence of the blast in peripheral blood smear. All patients were treated with intravenous hydration with alkaline fluid and oral allopurinol. Cranial irradiation started on the day of diagnosis. With 2 Gy in one fraction in 4 patients, 4 Gy in two fractions in 20 patients. Results : The WBC count had fallen in 19 patients (83%) and no intracerebral hemorrhage occurred after irradiation. There were five cases of early deaths. Four patients died of metabolic complications, and one patient with intracerebral hemorrhage. He died 5 hours after cranial irradiation. No patient had any immediate side effect from cranial irradiation. Conclusion : Our data suggest, that emergency cranial irradiation can be safely chosen and effective in childhood leukemic patients presenting with high leukocyte counts.
Cho Sung-Il;Kim Chun-Soo;Bae Dae-Seok;Kim Kyung-Su;Song Moo-Young
The Journal of Engineering Geology
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v.16
no.1
s.47
/
pp.69-83
/
2006
This study aims to evaluate a complex groundwater flow system around the underground oil storage caverns using the concept of hydraulic compartment. For the hydrogeological analysis, the hydraulic testing data, the evolution of groundwater levels in 28 surface monitoring boreholes and pressure variation of 95 horizontal and 63 vertical water curtain holes in the caverns were utilized. At the cavern level, the Hydraulic Conductor Domains(fracture zones) are characterized one local major fracture zone(NE-1)and two local fracture zones between the FZ-1 and FZ-2 fracture zones. The Hydraulic Rock Domain(rock mass) is divided into four compartments by the above local fracture zones. Two Hydraulic Rock Domains(A, B) around the FZ-2 zone have a relatively high initial groundwater pressures up to $15kg/cm^2$ and the differences between the upper and lower groundwater levels, measured from the monitoring holes equipped with double completion, are in the range of 10 and 40 m throughout the construction stage, indicating relatively good hydraulic connection between the near surface and bedrock groundwater systems. On the other hand, two Hydraulic Rock Domains(C, D) adjacent to the FZ-1, the groundwater levels in the upper and lower zones are shown a great difference in the maximum of 120 m and the high water levels in the upper groundwater system were not varied during the construction stage. This might be resulted from the very low hydraulic conductivity$(7.2X10^{-10}m/sec)$ in the zone, six times lower than that of Domain C, D. Groundwater recharge rates obtained from the numerical modeling are 2% of the annual mean precipitation(1,356mm/year) for 20 years.
Yoon Sei Chul;Kim Sung Whan;Chung Soo Mi;Gil Hok Jun;Shinn Kyung Sub;Bahk Yong Whee;Kang Joon Ki;Song Jin Un
Radiation Oncology Journal
/
v.9
no.1
/
pp.47-52
/
1991
From April,1983 through April,1989, we have treated histologically proven 21 patients with oligodendroglioma using 6 MV linear accelerator at the Division of Radiation Therapy, Kangnam 51. Mary's Hospital Catholic University Medical College. These are 8% of the irradiated 246 primary brain tumors during the same period. To investigate influencing factors on the survival of irradiated U patients with oligodendroglioma, we analyzed the cerebral location of the involvements, initial symptoms, CT findings and survival rates, retrospectively. One case was lost to follow up and excluded from survival data. Of the 28 patients, thirteen were male and 8 female. Ages ranged from 5 to 68 years with a median age of 38 years. Radiation doses varied from 3900 cGy to 0480 cGy and were given for 5 to 8 weeks. All but one were supratentorial. The involvement of the frontal and parietal lobes were 10 (48%) patients in each and temporal lobe in 8 (38.1%). Histological diagnosis was made by stereotactic biopsy in 3 and postoperatively in 18. The type of surgery was divided into partial, subtotal and total resection in 7,9 and 2 cases respectively. In 6 cases, chemotherapy was also tried during or after radiation therapy. Major presenting symptoms were headache, cerebral motor, nausea & vomiting and epilepsy in 18,12, 7 and 5 respectively in decreasing order. In CT analysis, low density (02%), cystic mass (33%), calcifiestion (66%) and positive contrast enhancement (42.8%) were observed as the highest frequency. Mean survival duration after radiation therapy was 38 months (K-M methods). We could not achieve statistically significant factors influencing on the survival rate after radiation therapy for oligodendrogliomas by one or two tail test.
Kim, Seong-Hee;Kim, Young-Jong;Kim, Shin;Jeong, Tae-Sung
Journal of the korean academy of Pediatric Dentistry
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v.39
no.3
/
pp.242-248
/
2012
Children usually have varying degree of caries in primary anterior teeth, and treatment planning for each case prescribed by each dentist can also be varied. This survey was conducted to compare the preferred treatment method and restorative materials between general dentists and pediatric dentists in regard to the treatment of primary incisors. The questionnaires, composed of 18 questions were sent to 45 general dentists and 50 pediatric dentists. Among which 30 and 31 questionnaires were retrieved respectively. The collected data were analyzed by rate and the results were as follows: 1. For the teeth with initial caries without cavitation, general dentists showed the tendency to prefer restorative treatment(30%) or observation without any treatment(42%), whereas pediatric dentists prefer preventive treatment(76%). 2. The primary factor in choosing restorative materials by both groups was its manipulativeness. 3. For anterior esthetic restoration, general dentists seldom use the full-coverage restoration(13%) but resin restoration(75%), whereas pediatric dentists frequently used full-coverage crow(64%). 4. In the treatment of dentinal caries, pediatric dentist did not perform the treatment lesser than 2.0 years before the exfoliation (compared to 1.2 years of general dentist). 5. In the treatment of 1 year children, both pediatric and general dentists tend to select preventive procedure as first choice of treatment(84%, 52%). When treating primary incisor caries, it is shown that pediatric dentists are more interested in restorative/preventive treatment than general dentists are.
Song, JiYeon;Kim, Wan;Maeng, Seongjin;Lee, Sang Hoon
Journal of Radiation Protection and Research
/
v.41
no.1
/
pp.49-55
/
2016
Background: For the purpose of baseline data collection and enhancement of environmental monitoring the distribution studies of $^{137}Cs$ and $^{90}Sr$ in the soil of Uljin province was performed and the relation between surface soil activities and soil properties (pH, TOC and median of the surface soil) was analyzed. Materials and Methods: For 14 spots within 10 km from the NPP surface soil samples were collected and soils for depth profile were sampled for 3 spots in April 2011. Using ${\gamma}$-ray spectrometry with HPGe detector, the concentrations of $^{137}Cs$ were determined and the concentrations of $^{90}Sr$ were measured by counting ${\beta}$-activity of $^{90}Y$ (in equilibrium with $^{90}Sr$) in a gas flow proportional counter. Results and Discussion: The concentration ranges of $^{137}Cs$ and $^{90}Sr$ were $<0.479-39.6Bq{\cdot}(kg-dry)^{-1}$ (avg. $7.51Bq{\cdot}(kg-dry)^{-1}$) and $0.209-1.85Bq{\cdot}(kg-dry)^{-1}$ (avg. $0.74Bq{\cdot}(kg-dry)^{-1}$) which were similar to the reported values from other regions in Korea. The activity ratio of $^{137}Cs$ to $^{90}Sr$ in surface soils was around 9.67, which is much bigger than the initial value of 1.75 for worldwide fallouts because of faster downward movement of $^{90}Sr$ after fallout than that of $^{137}Cs$. For depth profile studies soils were collected down to 40 cm depth for the locations of Deokgu, Hujeong and Maehwa. The $^{137}Cs$ concentration distribution of the first two showed maximum values at top soils and decreased rapidly in exponential manner, while $^{90}Sr$ showed two local maximum values for soils near top and about 30 cm depth. Through linear fittings between the $^{137}Cs$ and $^{90}Sr$ concentrations of surface soil and pH, TOC and median of the surface soil, the only probable relationship obtained was between $^{137}Cs$ and TOC (determination coefficient $R^2=0.6$). Conclusion: The concentration ranges of $^{137}Cs$ and $^{90}Sr$ in Uljin were similar to the reported values from other regions in Korea. The only probable relationship obtained between activities and soil properties was between $^{137}Cs$ and TOC.
Kim, C.S.;Son, H.D.;Park, M.R.;Seo, J.Y.;Cho, M.D.;Rheu, N.S.
Tuberculosis and Respiratory Diseases
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v.44
no.5
/
pp.1001-1010
/
1997
Background : PCR technique is useful in diagnosis of pulmonary tuberculosis. But, its sensitivity and specificity is some different among several studies. Our aim is compare our PCR results with other's previous PCR results in AFB smear negative patients. Methods : PCR were performed in patients that their disease were suspected as active pulmonary tuberculosis and that their initial serial sputum AFB smear results were negative. Total number of patients studied by PCR technique was 177. Also, we analyzed the data only in patients whose bronchial washing fluid AFB smear was negative. And the primer had been used was IS 6110. Results : In our retrograde study, the number of patients who are diagnosed as having active pulmonary tuberculosis, inactive pulmonary tuberculosis and nontuberculous pulmonary disease was 99, 28, 50, respectively. In the sputum study, the sensitivity of PCR is 41.5% (27 PCR positive cases/65 active TBc cases). And the sensitivity of TB culture is 53.8% (35 TB culture positive cases/65 active TBc cases). In the bronchial washing specimen study, the sensitivity of PCR is 53.8% (21 PCR positive cases/39 active TBc cases). And the sensitivity of TB culture is 43.6% (17 TB culture Positive cases/39 active TBc cases). The specificity of PCR in our study is 94.9%. (74 PCR negative cases/78 inactive TBc or nontubereulous cases) In the cases of patients who were never takened anti-TBc medication, the sensitivity of PCR (45.6%--25 positive cases/55 cases) is some lower than culture (58.2%--32 positive cases/55 cases). In the cases of patients who had been takened anti-TBC medication. the sensitivity of PCR (60%--18 positive cases/30 cases) is some superior than culture (50%--15 positive cases/30 cases). Conclusion : We think that PCR results in cases of sputum AFB smear negative patients is nearly same as culture. And PCR is especially useful in patients who had been takened anti-TBc medication on admission.
Hwang, Taik Gun;Kim, Soon Deok;Yoo, Se Hwa;Shin, Yoo Chul
Tuberculosis and Respiratory Diseases
/
v.56
no.5
/
pp.485-494
/
2004
Background : To assess the effects of mDOT implementation on sputum smear conversion for AFB (Acid fast bacilli) positive pulmonary tuberculosis patients, modified Directly Observed Treatment (mDOT) was started on October $8^{th}$ 2001 at a health center in Seoul. mDOT was defined through weekly interviewing and supervising of a patient by a supervisor (doctor, nurse, or lay health worker). The sputum smear conversion of a mDOT group was compared with that of a self-medication (self) group. Methods : This study included 52 AFB positive pulmonary tuberculosis patients registered at a health center in Seoul between October $8^{th}$ 2001 and April $23^{rd}$ 2002. 24 and 28 patients were enrolled in the mDOT and self medication groups, respectively. Paired (1:1) individual matching, by gender, extent of disease, relapse and age-matching variables, was performed between the two groups, resulting in 20 paired matches. This prospective study was planned as an unblinded, non-randomized quasiexperimental pilot project. Outcomes were identified from results of sputum smear examinations for AFB in both groups at 2 weeks, and 1 and 2 months. The paired matching data were analyzed using the SAS program version 8.1 by McNemar test. Results : At the end of 2 weeks of treatment, the sputum smear conversion of the mDOT group was somewhat higher than that of the self medication group (78.57 vs. 50%, p-value=0.289), and after 1 month of treatment no statistically significant difference was shown between the two groups (83.33 vs. 50, p-value=0.125). At the end of 2 months of treatment (initial intensive phase), the sputum smear conversions of the mDOT and self groups were 95 and 75%, respectively (p-value=0.219). Conclusions : The implementation of mDOT did not result in clinically significant increases in the sputum smear conversion at 2 weeks, and 1 and 2 months compared with that of the self medication group. However, the increases experienced might contribute to diminishing the infectious period of AFB positive patients, and this approach may act as a guide for a specific group of patients. In this study, mDOT was performed for one hundred percent of the intensive treatment phase. It can also be an effective treatment for pulmonary tuberculosis patients, and may be useful for some high risk tuberculosis patients.
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