• Journal of Technologic Dentistry
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• v.15 no.1
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• pp.27-41
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• 1993

Degree of noise by personal dental laboratory working process and degree of noise by complex dental laboratory working process were measured separtely. The time of exposure to noise greater than 70dB was analyzed. Then, the whole degree of noise in dental laboratory was estimated on the basis of afore-mentioned information. Questionaire were employed to investigate the mental, emotional and physiological effects of noise in dental technicians, The purpose of this study was to provide basic information on keeping dental techneicans who are exposed to noise pollution in good working condition and good health. Results obtained are as follows ; 1. Polishing process in each working part showed high degree of noise greater than 70dB in terms of degree of noise by personal working. 2. Degree of noise by complex working process in each working part was greater than that of personal working process. 3. Time of exposure to noise complex working process the part of porcelain 150min, partial denture 120 min, crown and bridge 100 min, full denture 80 min. 4. Degree of noise by time in dental laboratory was 80dB in general for polishing process and below 75dB for waxing process. 5. Effects of noise on mental and emotional state of dental technicians showed that they felt irritated every day(14%), irritated once in a while(29%) and easily ger mad(19%). 6. Effects of noise on heart and stomach were hyper-gastric acid(38%), gastric ulcer(11%), gastritis(5%), deuodenal ulcer(3%) and weak heart function(32%). 7. Effects of noise in the hearing ability were weak(39%), moderate(33%) and normal(14%) Data presented in this study demonstrated that noise in the dental laboratory exerts profound effect on dental technicians mentally, physiologically and emotionally, in light of the above results, therefore, it appears advisable to devots substantial on the management of working condition and put further(continuing) efforts in the investigation for reducing noise problem.

• The Journal of the Korean dental association
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• v.53 no.11
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• pp.870-885
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• 2015

This article discusses accomplishments and historical implications of American missionary dentist W.J. Scheifley and the first Korean dental department, which was established in 1915 in Korea. W.J. Scheifley, with Christian service mind and mission as a dentist, applied to American Protestantic missionary dentist overseas. The dental department in the Severance Union Medical College introduced the scientistic dental education of America, facilitated research on the dental condition of the Korean people, and ran independent dental clinic. W.J. Schiefley criticised the profit-seeking attitude of Japanese dentists and denturist(="IPCHISA", in Korean pronunciation) and emphasized on the significance of Oral Health. He did all kind of dental treatments with advanced equipments like X-ray machine, and managed the collective oral health care for missionaries overseas. He trained medical students and assistants of the dentists with the goal of producing Korean dentists, but he failed due to the Dentist law introduced by Japanese colonial administration that interfered with producing Korean dentists. However, O.R. Avison's proposal of the establishment of dental schools stimulated the establishment of Kyungsung dental school, which provided the basis for the Dental department in the Severance Union Medical College becoming special training institution for Korean Dentists.

• Journal of Korean society of Dental Hygiene
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• v.17 no.6
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• pp.1225-1235
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• 2017

Objectives: The purpose of this study is to examine the effects of parents' oral health management behavior towards children on children's oral health. Methods: Dental examination were done to 82 children, and a survey was conducted to 82 parents of them. This researcher conducted multiple regression analysis to figure out how parents' oral health management behavior towards their children influences their oral health condition. Results: Among the kinds of parents' oral health management behavior towards their children, when they received a lower score in guidance for dietary control, children tended to have more dt index. Among the kinds of parents' oral health management behavior towards their children, guidance for tooth brushing and guidance for oral care influenced their children's O'leary index. When they received a higher score in guidance for tooth brushing and guidance for oral care, their children's O'leary index became lower. Conclusions: This study has found that parents' dietary guidance provided to children influences their dt index, and O'leary index, one of the major causes of dental caries, is influenced by parents' guidance for tooth-brushing and guidance for oral care. Therefore, we should realize that according to the degree of parents' interest in children's oral care, children's state of oral health can be changed, and parents should acquire proper knowledge about oral health and instruct and train their children desirably.

• Journal of dental hygiene science
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• v.8 no.3
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• pp.175-182
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• 2008

The purpose of this study was to compare and analyze the behavior status of oral health between dental hygiene and non-dental hygiene students. The subjects in this study were students from two different colleges that were respectively located in Seoul and Gwangju. In order to examine the necessity of oral-health education, the self-recorded questionnaires had been widely distributed and surveyed from June 2006 to May 2007. The following results were obtained on the basis of comparative analysis through the collected materials. 1. As a result of surveying the actual condition of managing oral health, regarding the frequency of tooth brush, the dental hygiene students were the largest in 3 times. And, the non-dental hygiene students were indicated to be the largest in two times(p < 0.01). 2. As for the experience of scaling, the dental hygiene students were the most in having experience(50.9%), and the non-dental hygiene students were the most in having no experience(56.8%)(p < 0.001). 3. As a result of examining about the experience of oral-health education, the dental hygiene students were many in a case of having experience. And, the non-dental hygiene students were many in a case of having no experience(p < 0.001). The findings of the study showed that in terms of the state of oral health care, the dental hygiene students who received a lot of oral health education excelled the other students who didn't.

• The Journal of Korean Society for School & Community Health Education
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• v.8 no.2
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• pp.49-59
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• 2007

Objectives: This study was designed to understand the oral health fact of high school students, search for an education method and learning goal appropriate for the subjects, and utilize them as basic data to think of effective solutions for oral health care. Methods: The samples to achieve the purpose of this research are composed of 386 students in J industrial high school, OO city, Kyounggido, the number of male students 286, and female students 100. Data were statistically analyzed by frequency analysis, cross tabulation by using SPSS WIN Ver. 12.0. Results: First, The answers in terms of oral symptoms were in the order of 31.8% for gum hurt and bleeding, 31.4% for pain in teeth by drinking or eating hot and cold drinks or food, 27.1% for broken or cracked teeth, 25.7% for aching and throbbing teeth, 20.6% for unpleasant mouth smell, and 5.7% for pain of tongue and soft oral tissues. Second, In terms of behavior for oral health, 88.4% answered that they consume cariogenic snacks, while 29.2% of them, 2.5% of male and 6.3% of female enjoy consuming them but hardly brush their teeth after consumption. Third, In terms of timing for brushing teeth, the results show that 50.0% do so before breakfast, 47.9% after breakfast, 15.2% after lunch, 36.9% after dinner, 65.5% before going to sleep, and 3.5% after consuming snacks, whereas 64.2% answered that they are not aware of fluorine mouthwash. Fourth, In terms of oral health condition. proportion of children with one or more caries in permanent teeth was 71.0%, while 51.4% have $2{\sim}3$ cariogenic teeth, and 16.8% have more than 4 cariogenic teeth. Considering sex, female students have somewhat higher ratio showing 68.5% for male and 78.0% for female, but the ratio was 53.1% for male and 46.7% for female in case of $2{\sim}3$ cariogenic teeth, and 17.5% for male and 15.8% for female in case of more than 4 cariogenic teeth. 9.3% of students turned out to have decayed teeth. Fifth, In terms of oral hygiene condition, only 7.9% of them had excellent condition, and 38.4% need to improve. More specifically, 41.1% of male students and 30.6% of female students need to improve their oral hygiene condition. Conclusions: The study results suggest that School Dental health programs increase and need to be community-incorporated and comprehensive from elementary to high school.

• Journal of Korean society of Dental Hygiene
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• v.14 no.6
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• pp.887-894
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• 2014

Objectives: The purpose of this study was to investigate the oral health education and oral health care in the implant wearers. Methods: A self-administered questionnaire was conducted by 253 patients in 14 different dental hospitals and clinics in Seoul and Gyeonggi-do from July 1 to September 30, 2012. The instrument was adapted from Kang and Lee, Yu and Shim, and Ko and Jang on the basis of the previous study. The questionnaire consisted of 12 questions including general characteristics of the subjects(4 questions), oral health education(3 questions), behavior and attitude of tooth brushing(3 questions), and use of auxiliary supplies(2 questions). Results: 1. 38.3% of the patients received the dental care education for the first time. The most common education method was demonstration by dental hygienists(28.9%). 26.2% of the patients wanted to know the right toothbrushing method. 2. The best toothbrushing methods were rolling method(28.9%) and Leonard's method(28.9%). 19.4% of the patients changed the toothbrushing method after education. 22.5 percent brushed their natural teeth and implant teeth by a different maneuver. 3. The interdental brush was the most commonly used product(35.8%) and most of the patients the interdental brush once a day(36.6%). 4. There was a significant difference between the frequency of toothbrushing and method(p<0.05). 5. There was a significant difference between the separate brushing of implant and natural teeth by the frequency of toothbrushing and method of education(p<0.05). 6. Use of interdental brush had an influenced on education method(p<0.05). Conclusions: Regular dental checkup and use of interdental brush can improve the oral care for the implant wearers. Regular use of interdental brush can prolong the life span of implant tooth and keep the patients' teeth in good condition.

• The Journal of the Korean dental association
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• v.53 no.11
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• pp.770-778
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• 2015

This article discusses how to conduct treatment planning and decision making in special needs dentistry. Special needs patients often lack cooperative ability during dental treatment and have a deteriorated oral health status. To overcome the limitation in communication with special needs patients and solve their complicated dental problems, dentists need to have extensive preoperative information about the patients and their caregivers. Treatment procedures should be organized in a patient-centered and cost-effective manner. Additionally, clinical outcomes need to be predicted taking into consideration of the patients' condition. The clinical experience of committed dentists is another factor that enhances the benefits of extensive treatment in special needs patients with many limitations. The insightful treatment decision-making of dentists will contribute to improving the oral health of special needs patients despite the various obstacles.

• Journal of dental hygiene science
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• v.9 no.5
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• pp.571-577
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• 2009

This research basically work on oral health condition of the diabetes patients with data from 2006 National oral Health Survey. Based on this data, this research will provide basic materials about developing program with necessity of Recognition and education of the oral health condition. Analysis with using SPSSWIN 12.0 makes some results on the below. First, Existence and nonexistence based on age division shows result that over 70 years old gets 39.8%, which is highest percentage(p<0.05). Second, In existence and nonexistence based on sex distinction and age division, Women gets higher percentage (60.8%) than percentage of the men (39.2%). Third. Both diabetes patient and control group answered 'unhealthy' about subjective recognition of the oral health condition. Forth, percentage of caries on permanent tooth 12 92.0% for diabetes patient (p<0.05). Fifth, Answer about periodontal structure of diabetes patient is 88.9% of blooding periodontal structure(p<0.05). Sixth, Result of the demand of caries and periodontal structure treatment from diabetes patients show that diabetes patient does not feel necessity about treatment although they gets hardship of chewing. Also, it does not show any statistical difference. Seventh, Results of the oral health practice based on demographic characteristics are eating snack(highest answer). Latest visiting dental hospital before 1 year ago, or long before this. Frequencies of brushing tooth are less than 3 times. Also, il does not show any statistical difference.

• Journal of Korean society of Dental Hygiene
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• v.20 no.5
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• pp.743-752
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• 2020

Objectives: The objectives of this study were to investigate the distribution and level of periodontopathic bacteria with the general characteristics and oral health condition of the elderly. Methods: A total of 335 elderly individuals aged 65 years or older who lived in Ganghwa-gun, Incheon, were included in the study. Oral examination, investigation through a questionnaire, and collection of saliva were carried out. The collected saliva was analyzed for the distribution and levels of bacteria (red and orange complex bacteria) by real-time polymerase chain reaction. Statistical analyses were performed using chi-square test, t-test, one-way analysis of variance, and Pearson's correlation coefficient with SAS statistical software version 9.4. Results: Among the general characteristics, there were significant differences in the distribution of Porphyromonas gingivalis, Treponema denticola, and Parvimonas micra depending on sex, age, and dental visits (p<0.05). The number of remaining teeth and denture use were related to the distribution of periodontopathic bacteria, except T. denticola (p<0.05). Additionally, periodontitis was related to the distribution of P. gingivalis (p<0.05). As the number of remaining teeth increased, the copy number of red and orange complex bacteria also increased (p<0.05). Those individuals who did not use dentures and had periodontal disease had more periodontopathic bacteria (p<0.05). Conclusions: The distribution and copy number of periodontopathic bacteria in the elderly were more related to oral health condition than to general characteristics. In particular, the distribution and copy number of periodontopathic bacteria were higher in subjects with multiple remaining teeth, no dentures, and periodontal disease.

• Journal of Korean society of Dental Hygiene
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• v.1 no.1
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• pp.1-17
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• 2001

This study was tried to suppose the necessity for the participations of the guardians or parents into dental health educations and for developing an educational program on the control of denial health in order to improve the dental health of handicapped children. For this research, it was investigated by a survey on the actual condition of dental health with an object of handicapped children, and simultaneously by analyzing the relationships between the realities of child's dental caries and guardian's acknowledgments and managements with regard to the dental health of the children. The 209 children and their guardians being in special school for the handicapped were surveyed about the actual conditions of dental health from 15 May to 30 June 2000. 1. The average of DT, MT, FT and DMFT index were 2.46, 0.13, 1.18 and 3.78, respectively. 2. As the parents' educational level (p<0.05) and economical incomes were high, the proportions the DMFT index were low (p<0.05). As the father of the handicapped children had a duty, the DMFT index were lower than the opposite case that the father had no duty. However. in the case of their mother, the presence of the duty has not showed any relationships with the DMFT index. And it was revealed that there was a tendency that the lower age of the parents showed the lower proportions (p<0.05) and index (p<0.001). 3. There was no meaningful differences for the DMFT index in the comparison between the children who can brush themselves or not, even though the children who can brush themselves showed relatively and slightly lower DMFT index than the children who can't do it themselves. 4. More frequent observations on the children's dental conditions by the parent resulted in the lower DMFT index(p<0.01). 5. As the parent had relatively more knowledges about the dental disease. the DMFT index were low. Therefore, as it was considered form these results, the parent should be required more positive participations for the improvement of their children's dental health. For promoting this participations, it must be required the development of educational programs and political services for the parent or guardians in order to improve the attendance into the educations.