• Journal of Periodontal and Implant Science
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• v.31 no.1
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• pp.225-232
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• 2001

The aim of this study was to recommend the optimal age for prevention of periodontal disease and to investigate the trend of treatment modality according to different period. From the chart recordings of the patients who had been treated periodontally from Jan. 1981 to Dec. 1995 in the dept .of periodontics, Chosun University Dental Hospital, those of the periodontally treated patients on more than 4 sixtants were selected for the present study. The distribution of the patients was counted according to the age group and the gender. And they were divided into 3 groups(group 1: 1987-1958, group 2: 1985-1990, group 3: 1991-1995) by 5 year interval according to the treated year. The periodontal treatment modalities were classified into non-surgical therapy, pocket elimination surgery, regenerative periodontal surgery, mucoginigival surgery, clinical crown lengthening, and others. The results were as follows; 1.In the distribution of the periodontally treated patients according to the age group, 40's age group was the highest, and 30's, 40's, and 50's age groups occupied more than two thirds(73%). 2.The sexual distribution of the periodontally treated patients showed that males(53.4%) were a little more than females(46.6%). Within 20's group female was higher, but within 40's male was higher. 3.Regardless of the age group and the gender, pocket elimination surgery was the most frequent treatment modality. 4.In group 1 and 2(1987-1990) the main treatment modality was pocket elimination surgery and non-surgical therapy, but in group 3(1991-1995) it was regenerative periodontal surgery and pocket elimination surgery. The above results suggest that the prevention of periodontal disease should be initiated from early twenties, and the most frequent treatment modality may be closely related with development of new material and method.

• Korean Journal of Oriental Medicine
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• v.3 no.1
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• pp.321-333
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• 1997

Clinical studies were performed on 119 cases who had HIVD and chronic back pain cured by chuna treatment from August 1984 to June 1997. The results were as follows 1. In 119 cases of HIVD and chronic back pain, 39 cases(32.8%) were male and 80 cases (67.2%) were female. 2. In 119 cases of HIVD and chronic back pain, 19 cases were under the age of 30 and 30 cases were under the age of 40 and 42 cases were under the age of 50 and 28 cases were older than 60 years old. 3. On Duration of Treatment in a Step, 29 cases were taken I -step treatment and 53 cases were taken II -step treatment and 31 cases were taken III -step treatment. 4. In 119 cases of HIVD and chronic back pain, recurrent rate was 12.6%.

• Asian-Australasian Journal of Animal Sciences
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• v.12 no.3
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• pp.354-357
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• 1999

Hypothyroidism was induced in three age groups (8 months, 1 year and 2 years) of Black Bengal goats by administering thiourea subcutaneously for 30 days. From fourth day onwards the animals were observed to be in hypothyroid state. For 8 months age group, a control group of similar age was taken. For the 1 year and 2 years age groups there was no control group but the values obtained on the pre-treatment day were considered as control values. For confirming the establishment of hypothyroidism, peripheral plasma triiodothyronine $(T_3)$ and thyroxine $(T_4)$ were estimated in all the animals before and during the treatment period by radioimunoassay. In the thiourea treated 8 months age group the $T_3$ and $T_4$ levels were significantly (p<0.001) lower than those in the control group during the treatment period. In all the thiourea treated groups the $T_3$ and $T_4$ levels observed during the treatment period were significantly (p<0.01) lower than the pre-treatment levels. A nonsignificant loss in the body weight was observed in all the thiourea treated groups whereas there was a significant growth in the control group of animals. The study indicates that hypothyroidism has a negative effect on growth in goats.

• Journal of the korean academy of Pediatric Dentistry
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• v.51 no.2
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• pp.185-196
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• 2024

Temporomandibular joint disorders (TMDs) can occur at any age, including childhood and adolescence, and pain-related TMDs can affect growth and quality of life. In the present study, recent trends in the diagnosis and treatment of TMDs in children and adolescents were analyzed over a 10-year period. Using 10 years of data from the Health Insurance Review and Assessment Service (HIRA) and Jeonbuk National University (JBNU) Dental Hospital, patients between 0 and 19 years of age diagnosed with K07.6 (temporomandibular joint disorders) were analyzed by 5-year bins. Both datasets indicated a higher prevalence in females (1.2-fold in HIRA, 1.5-fold in JBNU) and in ages 15 to 19 years (72.1% in HIRA, 74.7% in JBNU). HIRA reported a 42.3% increase in prevalence per 100,000 people, from 651.4 in 2011 to 927.0 in 2020. JBNU reported K07.66 (masticatory muscle disorders) as the most common diagnosis in subjects under 10 years of age and K07.60 (internal derangement of temporomandibular joint) in those over 10 years of age. In addition, both were treated mainly by a combination of physical therapy and medication, and the treatment rate increased in accordance with age. Because TMDs can affect various structures in the orofacial region and cause pain that tends to differ with age, an early and specific diagnosis appropriate for age is important for treatment. Therefore, pediatric dentists need to promptly recognize TMDs in children and adolescents and consult with specialists as the prevalence increases.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.25 no.3
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• pp.97-112
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• 2012

Objectives : The purpose of this study were to evaluate the effects of oriental medical therapy on obesity and different effects according to Body Mass Index(BMI), menopause, obesity treatment experience, age, treatment period in patients. Methods : 46 patients were treated from November 2011 to April 2012 in Oriental Obesity Center, Dong-eui Medical Center. They were measured change of body compositions by bioelectrical impedance analysis every 2~3 weeks and 27 patients out of 46 were checked body compositions every 2 weeks. 46 and 27 patients were divided into two or three groups according to BMI, menopause, obesity treatment experience, age, treatment period. We compared before and after treatment body compositions. Results : Body compositions, except edema index were significantly reduced. Abdominal Visceral Fat(AVF) was significantly reduced in Obese group. Body Weight(BW), BMI, Body Fat(BF), Body Fat Percetage(BFP), Abdominal Visceral Fat Level(AVFL), Abdominal Visceral Fat(AVF), Abdominal Subcutaneous Fat(ASF) were significantly reduced in non-menopause group(43 female patients). But in 26 female patients out of 27, there were no significantly differences between groups in menopause. There were no significantly differences between groups in obesity treatment experience. But in 27 patients, BMI and AVF were significantly reduced in non-experience group and AVFL was significantly reduced in experience group. BW, BMI, BF, BFP, VAF, ASF were significantly reduced in younger age group. But in 27 patients, BW and Muscle were significantly reduced in younger age group. BMI, BF, BFP, Edema, AFVL, Abdominal Visceral Fat Area(AVFA), AVF, ASF were significantly reduced in longer treatment period group. Conclusion : The BF, BMI, BF, BFP, Muscle, AVFL, AVFA, AVF, ASF were almost decreased significantly. It resulted that the effects of oriental medical therapy in obesity was positive. And it was meaningful study to know about different effects between groups.

• Journal of Families and Better Life
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• v.22 no.6 s.72
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• pp.143-152
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• 2004

The purpose of this study was to know the effectiveness of prolonged-speech treatment program on school-age children with stuttering. Two male and One female subjects participated in this study. The speech of 3 subjects in the treatment was assessed on frequency of stuttering, stuttering Pattern, degree of severity in stuttering. This Program was taken from Ryan's the step of traditional therapy Program and prolonged-speech technique program. and then, modified in accordance with the purpose of this study. The treatment program were consisted of Four stages. The results of this study were as follows: First, 3 subjects can speak with greatly reduced stuttering frequency after treatment Second, in the stuttering pattern, all subjects were changed from part-word repetition in stuttering into a prolongation in stuttering. And also, all subjects showed similar effect in the maintenance.

• Restorative Dentistry and Endodontics
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• v.49 no.3
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• pp.28.1-28.12
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• 2024

Objectives: This study aimed to investigate the endodontic characteristics of mandibular premolars with dens evaginatus (DE) that require endodontic treatment. Materials and Methods: Patients who underwent endodontic treatment were enrolled. The inclusion criteria were patients who underwent root canal treatment in the lower permanent teeth with DE and were followed up for at least 1 year. Preoperative clinical and radiographic variables were obtained. The frequency distribution of the preoperative variables was compared using the χ² or Fisher's exact tests. The significance of the change in periapical health index (PAI) and root development stages before and after treatment was examined using the Wilcoxon signed-rank test. Results: A total of 150 teeth of 134 patients with an average age of 15.3 years were included. The percentage distribution comparison of the preoperative variables and obturation techniques revealed significant differences in pulpal and periapical diagnosis, and percussion, and especially regarding age, root development stage, and PAI. Age was the only statistically significant preoperative variable associated with root growth (p < 0.05). Conclusions: Approximately, 60% of DEs requiring endodontic treatment had immature roots. Age being the most significant predisposing factor, early treatment provides the greatest opportunity for full root development.

• The korean journal of orthodontics
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• v.47 no.4
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• pp.215-221
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• 2017

Objective: This questionnaire study aimed to estimate the overall frequencies of positive perception towards orthodontic treatment among adults categorized according to age, sex, and area of living, and to identify barriers or negative perceptions preventing them from receiving orthodontic treatment. Methods: The participants included 598 adults aged over 20 years (230 men and 368 women) who visited the Dental Hospital of Seoul St. Mary's Hospital. The participants' opinions regarding their consideration of receiving orthodontic treatment were recorded using a specially designed questionnaire. Results: The overall rate of positive perception towards orthodontic treatment was 48.5%. Compared to adults in their 20s (63.2%), those in their 40s and 50s had a lower percentage of interest in orthodontic treatment (46.2% and 45.1%, respectively; p < 0.05). Overall, women (52.2%) had a higher rate of interest than did men (42.6%; p < 0.05). The area of living had no effect on the percentage of interest. The order of priority of chief complaints differed according to age: protrusion for those in the 20s and 30s, and spacing for those in the 40s to 60s. Overall, the main reason for not seeking treatment was the treatment fee. Respondents aged over 40 considered themselves "too old" for orthodontic treatment. Conclusions: The middle-aged had a relatively high percentage of interest (above 45%) in orthodontic treatment. However, demographic characteristics were not significantly associated with the positive interest. These results highlight the need for educating the middle-aged about the limitations and possibilities of orthodontic treatment to increase its acceptance.

• Proceedings of the Korean Vacuum Society Conference
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• 2013.02a
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• pp.283-283
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• 2013

Because of beautiful glossy and color, the value of gold leverage is very high in Europe. To improve the quality of gold alloys, we performed heat treatment on 14 K white gold alloys by variously changing age-hardening conditions. Age-hardening behavior and the related phase transformation changes were studied to elucidate the hardening mechanism of 14 K white gold alloy. For solid solution treatment [ST], casted gold alloy specimens were treated at high temperature ($750^{\circ}C$) for 30 minutes, and the specimens dropped to water to quench them. For Age-hardening treatment [AT], the specimens were treated at various temperatures ($250{\sim}300^{\circ}C$). After the heat treatment, we observed the phenomenon to increase hardness from 126 Hv to 166 Hv by Vicker's hardness tester. Through electron probe micro-analysis (EPMA) mapping analysis, we investigated that irregular particles were changed uniformly. In the SEM and OM images, two phases of matrix and particle-likestructures were observed, and the precipitation of these elements from the matrix progressed during age-hardening. By transmission electron microscope and X-ray diffraction observation, it was revealed that the formation of the Au3Cu superstructure contributed to the age-hardening at $270^{\circ}C$ in the gold alloy. After the heat treatment, this analysis shows that casted gold alloys were to improve hardness and to moderate surface defects at specific temperatures and duration.

• Asian Oncology Nursing
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• v.5 no.1
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• pp.22-30
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• 2005

Purpose: The aim of this study was to investigate the differences in emotional response and coping pattern by age among cancer patients. Method: As descriptive research, from November 2000 to April 2001, data was collected with semi-structured questionnaire to 90 adult cancer patients, and analyzed using quantitative analysis. Result: Most emotional response at the time of diagnosis of cancer is despair in 20-39years & more than 60 years, and Impact in 40-59years. In emotional response during treatment by age, there were most much hope in 20-39 years, fear in 40-59years, and acceptance in more than 60years. In difficulties by age during treatment, there were most much mental burden in 20-29years, problems about occupation/finance in 40-59years, and physical discomfort related to treatment in more than 60 years. Resolution of difficulties of treatment shows avoidance in 20-39years, active participation in 40-59years and compliance in more than 60 years. Coping pattern during treatment was positive thinking in 20-39years, refreshment in 40-59years, and despair/avoidance in more than 60 years. Coping with treatment & progress shows in 20-39years maintenance of current health, 40-59years impossible to recover, more than 60year health recovery. Conclusion: Nursing could be considered emotional response and coping pattern according to age.