• 한국치위생학회지
• /
• 제19권6호
• /
• pp.1099-1107
• /
• 2019

Objectives: The purpose of this study was to investigate the changes in pH in the oral cavity using the probiotic intake method. Methods: A total of 109 participants were enrolled and randomly assigned to three groups. Participants in the control group did not ingest powdered probiotics, those in experimental group 1 ingested powdered probiotics by dissolving them on the tongue, and those in experimental group 2 dissolved powdered probiotics on the tongue and rinsed with water. pH values were measured 5 times in all. The significance of each group was examined by the Kruskal-Wallis test. The trend over time was expressed as a graph with groupwise means and confidence intervals, considering repeated measurement data. Results: A significant difference was found between the control group and experimental group 1 at two time-points, i.e., immediately after intake and 3 min after ingestion. As a result of the time trend, the pH value of experimental group 2 was smaller than that of experimental group 1, compared to the control group. Conclusions: Studies have shown that taking probiotics with water may help reduce changes in oral pH. Probiotics should be aware of live bacteria and provide consumers with more detailed information on proper dosage and precautions.

• 동의신경정신과학회지
• /
• 제24권1호
• /
• pp.63-74
• /
• 2013

Objectives : The purpose of this study is to examine the effects of 3 day Forests healing programs for cognitive improvement, which consists of helpful contents of Korean medicine. Methods : This study examined the effects of forests healing for mild cognitive impairment patients, who visited a Korean medicine hospital neuropsychiatry clinic for outpatients. The Forests healing programs for cognitive improvement was run with 24 participants, in which 9 of them quit in the middle of the program, so excluded in data analysis. The Forests healing programs for cognitive improvement was consisted of 3 day helpful Korean medicine contents. The primary outcome measurement was a Computerized Neurocognitive Test (CNT), which measured the cognitive functions with computer programs. Results : The results of this study showed that CNT scores were not significantly changed after 3 day forests healing. General psychological states, including depression, anxiety, and anger, were also checked. Among them, depressive mood significantly improved. Quality of life (QOL) was also enhanced after 3 day program. These results indicate that the 3 day Forests healing programs for cognitive improvement was effective for depressive mood and QOL of mild cognitive impairment patients, but not enough for cognitive functions directly. Conclusions : The 3 day Forests healing programs for cognitive improvement were shown to be an effective intervention in improving some aspects of mild cognitive impairment patients, including depressive mood, and QOL. We suggest that repeated participation of this program can enhance cognitive function of mild cognitive impairment patients.

• 한국학교보건학회지
• /
• 제15권2호
• /
• pp.193-203
• /
• 2002

This study examined changes of elementary school students' knowledge and attitudes toward AIDS after AIDS health educational programs were conducted. The experiment was executed from November the 28th, 2001 to February the 6th, 2002. Study examinees were 156 fifth year students of 2 elementary schools located at S City. A preliminary inspection was implemented. The post-examination was conducted by a questionnaire survey 2 weeks and 9 weeks after the program was finished. The measurement instrument was the questionnaire developed by Yun, Hyun Sik(1997) and modified by this researcher. Collected data were analyzed with SPSS program package, $x^2$-test and t-test, Repeated Measure ANOVA. Findings of study are as follows; 1. Hypothesis 1 ; the hypothesis 1 is "The points of AIDS knowledge are different at each moment, before conducting the educational program, 2 weeks after conducting the educational program, and 9 weeks after conducting the educational program". After the above hypothesis was examined, interactive actions were shown among different periods in both groups (F=267.241, p=.000), so that this hypothesis 1 was approved. 2. Hypothesis 2 ; the hypothesis 2 is "The points of attitudes toward AIDS are different at each moment, before conducting the educational program, 2 weeks after conducting the educational program, and 9 weeks after conducting the educational program". It was closely examined, and the findings are that significant differences between two groups were found, whereas any interactions were not shown between two groups(F=3.753, p=.055), after controlling the attitude scores that showed differences before the education by covariable, and examining the results. so that this hypothesis 2 was rejected. The above study tells that the AIDS health education for elementary school students made their knowledge and attitudes change significantly, but the education was not effective for changing students' attitudes. Elementary school students need more systematic and continual AIDS health education.

• Imaging Science in Dentistry
• /
• 제42권1호
• /
• pp.25-33
• /
• 2012

Purpose : This study was performed to determine the accuracy of linear measurements on three-dimensional (3D) images using multi-detector computed tomography (MDCT) and cone-beam computed tomography (CBCT). Materials and Methods : MDCT and CBCT were performed using 24 dry skulls. Twenty-one measurements were taken on the dry skulls using digital caliper. Both types of CT data were imported into OnDemand software and identification of landmarks on the 3D surface rendering images and calculation of linear measurements were performed. Reproducibility of the measurements was assessed using repeated measures ANOVA and ICC, and the measurements were statistically compared using a Student t-test. Results : All assessments under the direct measurement and image-based measurements on the 3D CT surface rendering images using MDCT and CBCT showed no statistically difference under the ICC examination. The measurements showed no differences between the direct measurements of dry skull and the image-based measurements on the 3D CT surface rendering images (P>.05). Conclusion : Three-dimensional reconstructed surface rendering images using MDCT and CBCT would be appropriate for 3D measurements.

• Journal of Oral Medicine and Pain
• /
• 제19권2호
• /
• pp.153-168
• /
• 1994

The aim of the present study was to investigate a relation between occlusal wear area and occlusal contact patterns. For the purpose, occlusal wear area were measured in 58 dental students and in 129 patients with temporomandibular disorders(TMDs) from dental casts. Teeth used in this study were from canine to second molar on both sides in upper arch, totally ten. Occlusal wear area on casts was marked by pencil and photocopies, and then, the area was measured with planimeter. Occlusal relation was clinically examined with regard to Angle's classification, chewing side preference, lateral guidance pattern and bruxing and/or clenching habit. T-Scan, electronic occlusal contact analyzer, was used to record occlusal contact number, contact force, contact time and occlusal balance that is TLR(total left-right statistics) during tooth contact. All measurement were repeated 3 times and the average value was used for data processing. The obtained results were as follows : 1. Mean value of occlusal wear area did not differ significantly between dental students and patients. 2. There ws not significant difference in wear area between chewing side and non-chewing side in both groups. 3. Occlusal wear area was significantly increased with age in both groups. 4. Three subgroups divided by Angle's classification did not show any difference in occlusal wear area among them, but three subgroups divided by lateral guidance pattern showed slightly significant difference between canine guide subgroup and group function subgroup in patients. Occlusal wear ares\a in group function subgroup wear larger than canine guide subgroup. 5. Mean value of wear area in patients with bruxing and/or clenching habit did not differ from those in patients without such habit. 6. Correlationship among items related to occlusal contact pattern were highly consistent and significant in dental students and only one item significantly correlated with occlusal wear area was tooth contact time.

• 대한수의학회지
• /
• 제29권4호
• /
• pp.503-515
• /
• 1989

Critical parameters affecting sensitivity and specificity of an enzyme-linked immunosorbent assay(ELISA) for detection of antibodies to avian infections bronchitis virus(IBV) were standardized. By adopting the optimized conditions an equation calculating ELISA antibody titers from the observations at single serum dilution was formulated. The purified antigen of IBV Mass-41 strain was dispensed into polystyrene microplate wells at a concentration of 300ng per well($100{\mu}l$) and the plates were coated by completey drying at $37^{\circ}C$. Diluted chicken serum and horseradish peroxidase conjugated goat anti-chicken IgG were added in order in $100{\mu}l$ volumes per well and allowed to react for 30 minutes each at room temperature. Just before use and after each reaction the plates were washed three times with distilled water. Finally o-phenylenediamine solution was added as an enzyme substrate. After incubation for another 15 minutes at room temperature absorbances were read at 492nm. Hyperimmune serum against Mass-41 strain was used as internal reference positive(IRP) serum. After repeated titration of IRP and negative serum, a constant titer of IRP was determined. Serum titrations were carried out for various sample sera together with IRP and negative sera and the observed titers of sample sera were corrected by reflecting the ratio between observed and constant titers of IRP serum. These corrected titers of the sample sera were plotted against sample/positive(S/P) OD ratios. All the OD's measured in the serum titrations were also corrected by substracting negative serum OD. The following equation was formulated from the above data; $Log_{10}$ ELISA titer=$5.568({\log}_{10}S/P)+4.161$ Thus it was possible to calculate ELISA titer by measuring absorbance at 1/400 single serum dilution. Titer measured by cross ELISA tests employing Mass-41 strain and three local IBV isolates were similar. These results suggest that the ELISA tests standardized in this study can be used for evaluating not only vaccinal immunity but also for infection status against fields IBV's.

• Journal of Korean Neurosurgical Society
• /
• 제46권2호
• /
• pp.144-151
• /
• 2009

Objective: To compare two testing protocols for evaluating range of motion (ROM) changes in the preloaded cadaveric spines implanted with a mobile core type Charite$^{TM}$ lumbar artificial disc. Methods: Using five human cadaveric lumbosacral spines (L2-S2), baseline ROMs were measured with a bending moment of 8 Nm for all motion modes (flexion/extension, lateral bending, and axial rotation) in intact spine. The ROM was tracked using a video-based motion-capturing system. After the Charite$^{TM}$ disc was implanted at the L4-L5 level, the measurement was repeated using two different methods: 1) loading up to 8 Nm with the compressive follower preload as in testing the intact spine (Load control protocol), 2) loading in displacement control until the total ROM of L2-S2 matches that when the intact spine was loaded under load control (Hybrid protocol). The comparison between the data of each protocol was performed. Results: The ROMs of the L4-L5 arthroplasty level were increased in all test modalities (p < 0.05 in bending and rotation) under both load and hybrid protocols. At the adjacent segments, the ROMs were increased in all modes except flexion under load control protocol. Under hybrid protocol, the adjacent segments demonstrated decreased ROMs in all modalities except extension at the inferior segment. Statistical significance between load and hybrid protocols was observed during bending and rotation at the operative and adjacent levels (p< 0.05). Conclusion: In hybrid protocol, the Charite$^{TM}$ disc provided a relatively better restoration of ROM, than in the load control protocol, reproducing clinical observations in terms of motion following surgery.

• 한국지능시스템학회논문지
• /
• 제20권2호
• /
• pp.304-310
• /
• 2010

현대를 살아가는 현대인들이 경험하는 만성통증 및 디스크는 성인의 80% 이상이 경험하는 흔한 질병이다. 이러한 질환들 중 교통사고, 추락 등 물리적인 충격에 의한 발생율은 10%정도이며 대부분이 습관적으로 부적합한 자세를 취하게 되어 특정 부위에 지속적인 스트레스가 쌓여 발생하게 된다. 이처럼 부적합한 자세가 오랫동안 이어져 질환의 원인이 되는 것을 알면서도 고쳐지지 않는 이유는 지속적인 반복을 통한 습관화로 인하여 부적합한 자세를 바로 인지하지 못함으로써 바르게 교정하지 못하고 지속되어지기 때문이다. 따라서 본 시스템은 자세를 측정할 수 있는 센서들을 사용자에게 부착 후 사용자의 자세에 따른 데이터를 수집하여 정확한 자세를 측정하고 자세추정알고리즘을 이용하여 해당 자세의 적합여부를 추정한다. 사용자가 부적합한 자세를 지속적으로 취할 경우 이를 인지할 수 있도록 한다. 그리고 적합한 자세로 변경하도록 유도하여 부적합한 자세의 습관화를 방지하는데 목적을 두고 있다. 또한 부적합한 자세의 원인을 분석 후 제거하여 적합한 자세를 취하는데 보조자의 기능을 수행 한다. 정확한 측정을 통한 반복적인 인지 학습을 통해 올바른 자세를 습관화 한다면 성장기 어린이와 만성 질환자에게 많은 도움을 줄 것으로 생각 된다.

• 대한물리치료과학회지
• /
• 제5권4호
• /
• pp.795-807
• /
• 1998

The purpose of this study was to investigate the effects of exercise therapy to oldwomen's muscle strength, flexibility and IADL. To identify the effect of exercise therapy on oldwomen's muscle strength, flexibility and IADL, this study attempted to determine grip strength, back strength, leg strength, flexibility of upper and low(flexion, extension, abduction), flexibility of trunk(flexion, extension) and IADL, using dynamometer, goniometer and Geriatric center IADL, for 34 female. Thirty-four subjects participating in this study consisted of A group(from sixty-five to sixty-nine, eleven person), B group(from seventy to seventy-four, twelve person), C group(over seventy-five years old, eleven person). Data from the findings of this experiment were computed for and standard deviation by using repeated measurement of MINI TAB. As a result, the following conclusion was drawn : 1. Subject group showed significantly higher scores on effect of exercise between three age group after regular exercise. 2. Subject group showed significantly higher scores on muscle strength(grip strength, back strength, leg strength) and there is a difference between three age group after regular exercise of muscle strength. 3. Subject group showed significantly higher scores on flexibility (upper, lower, trunk) and there is a difference between three age group after regular exercise of flexibility. 4. Subject group showed significantly higher scores on IADL(Instrumental activities of daily living) and there is a difference between three age group after regular exercise. As a result of this study, the effect of exercise training program had improved muscle strength, ROM (range of motion) of joint, IADL. Thus exercise training program could be beneficially applied for the prevention of disability and promotion of health and wellbeing in the aged easily and safely.

• 한국치위생학회지
• /
• 제18권5호
• /
• pp.853-862
• /
• 2018

Objectives: This study involved a non-equivalent control group, pre-test/post-test measurement experiment to evaluate the efficacy of distributing plaque disclosing agents to healthy adults living in South Korea and promoting its self-application. Methods: O'Leary index, PHP index, oral health behavior intention, and oral care satisfaction were used as research tools. A notice was posted on the bulletin board from September 12 to October 15, 2016, to recruit adults aged 20-50 years. Data were analyzed using SPSS Version 22.0, and frequency analysis, Pearson's chi-squared, one-way analysis of variance (ANOVA), Kruskal-Wallis, and repeated measures ANOVA were performed. Results: The O'Leary index was significantly reduced in the group (p<0.01), and time (p<0.01) after education and width of the decrease had the highest score in the group that received education on plaque disclosing only. They were followed by the group that received education on plaque disclosing and the rolling method, the group that received education on the rolling method alone, and the control group. The PHP index significantly decreased in the group(p<0.01) and time (p<0.01), and the group time (p=0.039) after education, and width of the decrease had the highest score in the group that received education on plaque disclosing and rolling method. They were followed by the group that received education on plaque disclosing alone, the group that received education on the rolling method alone, and the control group. Conclusions: Based on the aforementioned findings, the direct use of plaque disclosing had a marked effect on self-oral care. These results suggest that the self-application of plaque disclosing could be an effective self-care method for improving the oral environment.