• Journal of Korean society of Dental Hygiene
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• v.8 no.4
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• pp.127-139
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• 2008

The purpose of this study was to examine the awareness of people in general about halitosis. The subjects in this study were 184 people who visited the clinical practice lab at J health college to get their teeth scaled. After a survey was conducted from May 1 to June 3, 2008, the analyzable answer sheets from 178 respondents were analyzed after four different areas were selected, which included smoking/nonsmoking, scaling experience, toothbrushing frequency and the use of oral hygiene supplies. SPSSWIN 12.0 program was utilized to make a frequency analysis and crosstabs analysis. The findings of the study were as follows: 1. Concerning subjective feelings of halitosis, 55.3 percent(99 people) of the respondents found themselves to have a moderate level of bad breath. 28.5 percent(51) deemed themselves to have a little foul breath, and 14 percent(25) didn't feel they had any bad breath. 2. As to the subjective level of halitosis, 89.8 percent(168) thought that their bad breath was a little perceived only by themselves, regardless of smoking, scaling experience, toothbrushing frequency and the use of oral hygiene supplies. 3. In regard to the cause of halitosis, 31 percent(56) cited plaque in the mouth as the cause, and 28.5 percent(51) pointed out the other causes that weren't mentioned in the questionnaire. 18.4 percent(33) cited decayed tooth, and 11.2 percent(20) pointed out gastroenteric disorder. 10.6 percent(19) viewed diabetes as the cause. 4. As to the time when they had the subjective symptom of halitosis, 114 respondents(63.7%) felt their own bad breath the most immediately after they got up 21.8 percent(39 respondents) did it when they were hungry 5.5 percent(9) did that before breakfast, and 4.5 percent(8) did that after having breakfast. 5. Regarding view of how to prevent halitosis, 52.5 percent(94) brushed their teeth frequently 21.2 percent(38) got their teeth scaled on a regular basis at a dentist's office, and 17.9 percent(32) drank water often. The above-mentioned finding seemed to suggest that the respondents weren't well aware of the fact halitosis was a sort of oral and systemic disease. Therefore the development of halitosis prevention and care programs geared toward practice lab visions were required.

• Journal of Periodontal and Implant Science
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• v.23 no.1
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• pp.183-192
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• 1993

The purpose of this epidermiological analysis was to evaluate the periodontal status of Korean young adults(twenties) in order to provide detail & baseline data for frequence of periodontal disease. Two hundred and fifty young adults, aged 20-29 years, were selected by random sampling. Dental visity, scaling treatment, education, income, toothbrushing frequence & method were checked, and plaque index(Loe and silness), calculus index(Ramfjord), gingival index(Loe and silness), attached gingival width, perio probing depth, gingival recession were measured. The obtained results were as follows. 1. Average plaque index(1.96), calculus index(1.43), gingival index(1.7) were higher in mandible than maxillar. It was most prevalent in lst molar. 2. Average attached gingival width(4.0mm) was wider in maxillar than mandible. It was most prominent in lateral incisor. 3. Pocket depth(>4mm) was distributed in 42% subject, it was higher in mandible than maxilla and most prevalent in 1st molar. 4. Gingival recession(>1mm) was distributed in 94% subject, it was higher in mandible than maxilla, and most prevalant in canine. 5. According to unpaired t-test, palque index, calculus index, gingival index were not statistically significant in history of scaling treatment, level of eduction and account of income, but were showed statistically significant in histrory of dental clinic.(PB0.05) 6. According to ANOVA test, correlation between tooth-brushing(frequence, method) and gingival index was showed statistically significant.(P<0.05) 7. There was gingival recessionof 87% subject in only one time brushing, 80% subject in two time, and 68% subject in three times. There was gingival recessionof 68% subject in leftright direction tooth brushing, 73% subject in upper-low method and 77% subject in combination method.

• Journal of Korean society of Dental Hygiene
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• v.14 no.5
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• pp.731-738
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• 2014

Objectives : The purpose of this study is to investigate the knowledge, practice, and awareness toward oral health in the special school teachers. Methods : A self-reported questionnaire was filled out by 133 teachers in special education schools in Seoul, Gyeonggi-do, Chungbuk, and Jeonbuk. Data were analyzed using the statistical package SPSS WIN 12.0 for frequency, t-test, one-way ANOVA, Scheffe test(post hoc test), and Pearson's correlation coefficient. Results : In oral health knowledge, the average score of female teachers was 8.31 in comparison to 7.75 in male teachers(p<.05). In oral health practice, the average score of female teachers was 3.71 and that of male teachers was 3.69. In oral health awareness, the average score of female teachers was 4.12 and male teachers had 3.93. The teachers in special schools had a close positive correlation between oral health awareness and practice(r=.448, p<.05). Conclusions : The teachers tended to have better knowledge of oral health but they did not practice the oral health behavior. The teachers have the important role in oral health management for the disabled children by providing the right toothbrushing method.

• Journal of Korean society of Dental Hygiene
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• v.15 no.3
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• pp.443-450
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• 2015

Objectives: The purpose of the study is to identify the relationship between happiness, subjective oral health condition and oral health behavior in Korean elderly people. Methods: A self-reported questionnaire was completed by 487 elderly people using facilities for the senior citizens in Gyeonggi-do from January 3 to November 28, 2014 by convenience sampling method. The questionnaire consisted of demographic characteristics of the subjects, subjective oral health status, oral health behavior, and happiness. Cronbach'a alpha in the happiness was 0.734 in the study. Results: Happiness was closely correlated with abscence of subjective periodontal diseases, dental fillings, and denture. The number of toothbrushing and dental health education had also influenced on happiness. Conclusions: In order to improve the quality of dental health in the elderly, it is necessary to develop a multilateral systematic dental health promotion program by Ministry of Health and Welfare.

• Journal of Korean society of Dental Hygiene
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• v.15 no.6
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• pp.1107-1116
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• 2015

Objectives: The purpose of this study was to examine awareness and satisfaction toward health insurance coverage of scaling. Methods: A self-reported questionnaire was completed by 221 patients receiving scaling service from July to August, 2014. The informed consent was approved after the explanation of purpose of the study. The questionnaire consisted of general characteristics of the subjects, awareness toward health insurance coverage of scaling, scaling service covered by health insurance, and satisfaction with health insurance service. Results: Those recognizing the health insurance service extension accounted for 87.3 percent and 67.4 percent answered that the appropriate coverage age would be 20 years old. The recommendable frequency of scaling was once a year and this accounted for 49.3 percent. Fifty percent of the subjects thought health insurance coverage of scaling would be reasonable and 34.8 percent acquired the information from mass media. The most common service providers were dental hygienists and the length of service was from 20 to 30 minutes. The contents of service included scaling service, toothbrushing method, and oral care. The satisfaction was 4.39 points. Conclusions: The health insurance coverage of scaling will improve the oral health and quality of life in Korean adults. So the government should try to extend the scaling coverage by health insurance and the frequency of scaling.

• Journal of Korean society of Dental Hygiene
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• v.8 no.3
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• pp.107-114
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• 2008

The purpose of this study was to examine the awareness of adult patients visiting dental clinics about periodontal diseases. The subjects in this study were 204 patients who paid a visit to five dental clinics and a dental hospital in the region of Jeonju. After a survey was conducted, the results were obtained as follows: 1. With regard to toothbrushing method, the most of the male patients(43.8%) brushed their teeth by rolling the toothbrushes up and down, and the most of the female patients(46.1%) did that both up and down and right and left. As to the influence of smoking, the largest number of the smokers(50.0%) and nonsmokers(40.4%) brushed their teeth both up and down and right and left. statistically significant differences were shown by gender and smoking(p<0.05). 2. As for knowledge acquisition route on periodontal diseases by gender, there was no way for the men(38.2%) to get the information, and the largest number of the women (43.4%) acquired the information through the internet. With respect to smoking, the largest numbers of the smokers(38.2%) and nonsmokers(37.5%) got the information by the internet, and statistically significant differences were found (p<0.05). 3. Concerning treatment method of periodontal diseases provided by the dental clinic, the largest number of the men(33.7%) got their teeth scaled, and the greatest group of the women(29.6%) had their gums treated. The treatment method made statistically significant differences by gender (p<0.05). Regarding smoking, the largest group of the smokers(32.4%) had their teeth scaled, and the largest number of the nonsmokers(28.7%) got their gums treated. significant differences were made statistically by smoking (p<0.05). 4. As to instruction on the prevention of periodontal diseases, the largest group(63.2%) intended to take that. The second (23.0%) was eager to do it, and the third(13.8%) was unwilling to do it.

• The Journal of Advanced Prosthodontics
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• v.14 no.6
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• pp.360-368
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• 2022

PURPOSE. This study assessed the physical and mechanical properties of interim crown materials fabricated using various digital techniques after accelerated aging. MATERIALS AND METHODS. Three groups of interim dental restorative materials (N = 20) were tested. The first group (CO) was fabricated using a conventional manual method. The second group (ML) was prepared from prefabricated resin blocks for the milling method and cut into specimen sizes using a cutting disc. The third group (3D) was additively manufactured using a digital light-processing (DLP) 3D printer. Aging acceleration treatments using toothbrushing and thermocycling simulators were applied to half of the specimens corresponding to three years of usage in the oral environment (N = 10). Surface roughness (Ra), Vickers microhardness, 3-point bending, sorption, and solubility tests were performed. A 2-way analysis of variance (ANOVA) and Fisher's multiple comparison test were used to compare the results among the groups. RESULTS. The mean surface roughness (Ra) of the resin after accelerated aging was significantly higher in the CO and ML groups than that before aging, but not in the 3D group. All groups showed reduced hardness after accelerated aging. The flexural strength values were highest in the 3D group, followed by the ML and CO groups after accelerated aging. Accelerated aging significantly reduced water sorption in the ML group. CONCLUSION. According to the tested material and 3D printer type, both 3D-printed and milled interim restoration resins showed higher flexural strength and modulus, and lower surface roughness than those prepared by the conventional method after accelerated aging.

• Journal of Korean society of Dental Hygiene
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• v.10 no.4
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• pp.577-584
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• 2010

Objectives : The purpose of this study was to examine the relationship of toothpaste-squeezing methods to the amount of toothpaste used among adults. Methods : The subjects in this study were 227 freshmen in a local college. After the intent of a survey was explained by this researcher, how much dentifrice they used was checked to ensure statistical objectivity, and then a survey was conducted. The collected data were analyzed with a SPSS WIN 13.0 program. Results : The findings of the study were as follows:1. As for connections between the way of squeezing and the amount used, the usual amount used, the amount used by horizontal squeezing and the amount used by pea-sized squeezing were respectively 1.12g, 0.66g and 0.46g. The amount used by horizontal squeezing and pea-sized squeezing was less than the usual amount used by 0.46g(41%) and 0.66g(59%) respectively.2. Gender, residential area, educational experiences and daily mean toothbrushing frequency made no differences to the amount of toothpaste used.3. The students who normally used a larger amount of toothpaste used a greater amount of toothpaste as well when they utilized horizontal squeezing and pea-sized squeezing, and the larger amount used by horizontal squeezing led to the greater amount used by pea-sized squeezing. Conclusions : As there were large disparities in the amount of toothpaste used according to the squeezing methods, systematic research efforts should be directed into setting the standard for the recommended amount of toothpaste used for adults and into squeezing method so that they could brush their teeth in an effective manner by using the minimum amount of toothpaste.

• Journal of dental hygiene science
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• v.6 no.4
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• pp.237-241
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• 2006

The purpose of this study was to obtain basic data that was to wide spread and contribute pit and fissure sealant program. This survey was conducted 899 parents of three elementary school students in Gigang-eup, Busan Metropolitan city, Korea. The obtained data were analysed by Independent t-test and chi-square test(SPSS for window 13.0). The obtained results were as follows; 1. Sealant program was lower preference method than toothbrushing and diet control for dental caries prevention method. 2. Percentage of sealant program awareness was 93.3% and Percentage of sealant program purpose awareness was 96.3%. 3. Percentage of sealant program agreement was 94.1% and comparison sex, age and education, all groups were observed higher than 90%. 4. Percentage of sealant program awareness route was observed highest through specialist(59.9%). 5. Check for maintenance after sealant application was conducted in 64.5% and demand for reexamination was 96.4%.

• Journal of dental hygiene science
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• v.17 no.5
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• pp.423-432
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• 2017

This study aimed to investigate the effect of repeated oral health education on the oral health of preschool children. This study classified the control group of children of 5~6 years of age where the oral health education was conducted one time, and the experiment group where the oral health education was conducted 4 times. The oral health conditions of each group and their risk of developing dental caries were also assessed. No significant difference was observed in the participants in terms of general characteristics, oral health conditions, risk of developing dental caries, and oral health behavior after oral health education. The two groups did not show a significant difference (p<0.001) in dental plaque index before and after oral health education, and showed a significant difference (p<0.001) according to the number of education sessions. Before oral health education, the participants in both groups were brushing their teeth incorrectly. However, after the third session, 56.7% of the participants in the experimental group and 9.4% in the control group used the correct method of tooth brushing. A significant difference was observed between the two groups (p<0.05). In addition, when the tooth-brushing time was compared, the two groups showed a significant difference (p<0.001), and a significant difference was observed in terms of the number of education sessions (p<0.05). In summary, repeated oral health education had significant influences on the dental plaque index, tooth-brushing method, brushing occlusal surfaces, and tooth-brushing time. Therefore, when oral health education is carried out, repeated oral health education in children is more effective than one-time oral health education as reflected in the changes in dental plaque index and oral health behavior. Moreover, oral health education is considered effective in changing the oral health behavior of children when conducted at least 3 times.