• The Journal of Korea Assosiation for Disability and Oral Health
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• v.14 no.1
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• pp.26-30
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• 2018

Aspiration of tooth can occur not only during dental treatment, but also due to factors like trauma or physiologic exfoliation of primary tooth. If this occurs, complications such as fever, cough, dyspnea, pain, and bronchitis can be appeared. 9 years-old girl with Lennox-Gastau syndrome visited the dental clinic for regular checkups. Calcified tooth-like material was observed in the chest PA x-ray, and maxillary left primary first molar was not observed in the patient's oral cavity. She had a history of hospitalization for pneumonia two months ago. Because it was considered that the tooth was likely to be aspirated and caused pneumonia, the extraction of remaining primary teeth with mobility was performed. It is necessary to reduce the risk of aspiration in patient with disabilities by performing active treatment such as removal of primary tooth with mobility or ill-fitting restorations.

• Journal of Korean society of Dental Hygiene
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• v.13 no.3
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• pp.387-393
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• 2013

Objectives : This study was carried out to investigate stepwise regression analysis on cervical abrasion & general characteristics, subjective oral health perception, habit related to oral health, and oral symptom. Methods : The study subjects were 2,158 workers in 23 industrial work places located in Gumi-si, Gyeongsangbuk-do Province from June 1 to July 1, 2012. As a result, the following conclusions were obtained. Results : 1. The cervical abrasion rate was high in men and older age group. 2. The cervical abrasion rate was high in a case of having not received scaling for the past one year. 3. The cervical abrasion rate was high in frequent tooth brushing. 4. The cervical abrasion rate was high in group having no bleeding in tooth and the gum. 5. The cervical abrasion rate was high in group having the cold symptom in teeth. 6. Excluding gum pain and bleeding, factors affecting tooth abrasion were gender, age, scaling over the past year, frequency of brushing a day and tooth sensitivity when cold food was ingested. 7. Gender and tooth sensitivity turned out to have negative(-) effect. age, scaling over the past year and frequency of brushing a day turned out to have positive(+) effect. Conclusions : Through this study, the best prevention method of cervical abrason is effective tooth brushing education and regular dental check up.

• Applied Microscopy
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• v.46 no.1
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• pp.58-66
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• 2016

Thymosin ${\beta}4$ ($T{\beta}4$) has been recently reported to play a role in dentinogenesis by regulating the expression of dentin matrix proteins. Based on previous studies, it is hypothesized that $T{\beta}4$ is associated with the formation of the enamel matrix and thus plays an important role in ameloblast. However, there is no report on the function of $T{\beta}4$ during tooth development so far. Therefore, in this study, we aimed to investigate the expression of $T{\beta}4$ and its function in ameloblasts during mouse tooth development. $T{\beta}4$ was expressed strongly in the tooth bud at the bud stage and in the dental lamina and oral epithelium at the cap stage. In advanced bell stage at postnatal day 4, large elongated ameloblasts were observed and the expression of the $T{\beta}4$ protein was the highest, with the enamel being was thicker than that in the early bell stage. The length of ameloblasts increased from the presecretory to the secretory stage and decreased from the maturation to the protective stage. These results suggest that $T{\beta}4$ participates not only in the proliferation of oral epithelial cells during the early stage of tooth development but also regulates enamel protein secretion in ameloblasts and enamel mineralization.

• Journal of the Korea Convergence Society
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• v.13 no.5
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• pp.501-508
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• 2022

It has been found that the incidence and mortality of COVID-19 are high in patients with underlying chronic diseases. Amid COVID-19 pandemic, tooth brushing is as important as hand washing for health care. The aim of this study was to identify factors related to the rate of tooth brushing and hand washing in hypertensive patients. We analyzed 62,762 hypertensive patients over the age of 40 from the Community Health Survey 2020. The practice rate of hand washing was higher among women, younger age, higher education level, mask wearers when going out, and tooth brushing practitioners after lunch. The hand washing practice rate was higher in hypertensive patients who practiced tooth brushing. In conclusion, there was the relationship between oral hygiene and personal quarantine. It is necessary to prepare sustainable measures to increase the practice rate of infectious disease prevention behaviors for patients with underlying chronic diseases who are susceptible to COVID-19.

• Journal of Korean society of Dental Hygiene
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• v.13 no.4
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• pp.597-604
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• 2013

Objectives : The purpose of the study is to compare and investigate oral health status between Korean adults living in Korea and the US. Methods : Subjects were 1,785 persons including 399 Korean adults living in Virginia, US and those from the second year 2011 of the 5th National Health and Nutrition Survey. Darta were analyzed using SPSS 12.0 for frequency analysis, t-test, one-way ANOVA, and post-hoc Tukey. Results : 1. In general characteristics, adult living in Korea revealed higher DT and DMFT than those in the US. 2. In oral health status, adult living in Korea revealed higher DT and DMFT than those in the US. 3. The variables affecting oral health status in Korean adults in the US were age, private health insurance and number of tooth brushing. 4. The variables affecting oral health status in adults in Korea included gender, age, private health insurance, smoking, drinking, use of secondary oral hygienic products and number of tooth brushing. Conclusions : It is necessary to emphasize the importance of oral health care and to establish the oral health education in dental care agencies.

• Proceedings of the Korea Contents Association Conference
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• 2014.11a
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• pp.411-412
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• 2014

The objective of this study was to evaluate relationships between the economic status and the oral health status. Data were obtained from the National Health Insurance Corporation database. The prevalence of dental caries and tooth loss were compared among the ten-percentile according to the level of the monthly income. The prevalence of dental caries and tooth loss were lower in the high level of monthly income than low level of monthly income group. There was a significant relationships between the economic status and the oral health status.

• Journal of Dental Rehabilitation and Applied Science
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• v.34 no.3
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• pp.137-146
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• 2018

Tooth wear is a multifactorial condition, leading to the loss of dental hard tissues. While for many years, tooth wear was a condition of little interest in daily clinical practice, nowadays this is changed. Tooth wear is becoming increasingly significant in maintaining the long-term health of the dentition. This becomes especially important when the dentition is kept relatively intact in the contemporary ageing population, and edentulism is decreasing. There is also evidence that the prevalence of tooth wear is growing. It is a natural consequence of the unidirectionality of tooth wear that it is frequently used as a means of individual age estimation. Tooth wear was very serious in ancient populations up to the medieval period. Tooth wear is thus studied in a wide variety of areas. The purpose of this paper is to summarize and analyze the many issues surrounding tooth wear through recent studies in various fields and to search for future research direction.

• Journal of Periodontal and Implant Science
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• v.25 no.2
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• pp.290-300
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• 1995

Tooth mobility is one of the most important clinical parameters in examination, diagnosis, prognosis and treatment planning procedure. In order to determine the differences of tooth mobility according to radiographical bone level, clinical root length, clinical crown/root ratio, and bleeding on probing, 90 male adults with periodontal disease and 10 male adults with periodontal health($25{\sim}45$ years old) were selected through clinical examinations including occlusal relationship, probing depth, attachment level, and bleeding on probing. On the mandibular anterior teeth, standard periapical radiographs were taken, and tooth mobility was measured by Periotest(Siemens Co., Germany). The radiographic bone level of individual tooth was evaluated as coronal 1/3, middle 1/3, and apical 1/3 to anatomical root length, and clinical crown length from incisal edge to bone level and clinical root length from bone level to root apex were measured with Boley gauge, and subsquently clinical crown/root ratio was calculated. The difference of tooth mobility(Periotest value) according to radiographical bone level, clinical root length, clinical crown/root ratio, and bleeding on probing was statistically analyzed by unpaired Student t-test. Tooth mobility was significantly higher in bleeding group than non-bleeding group on probing in the teeth radiographic bone level of middle 1/3, with clinical root length longer than 6mm, and with clinical crown/root ratio over 0.3(p<0.01). But there was no statistical difference in tooth mobility between bleeding group and non-bleeding group on probing in the teeth with radiographic bone level of apical 1/3, with short clinical root length less than 5mm, and with clinical crown/root ratio under 0.2(p>0.05). The results note that the tooth mobility depends on clinical root length, clinical crown/root ratio and gingival inflammation, and in the teeth with relatively good alveolar bone support gingival inflammation is one of the most important factors that affect tooth mobility.

• Journal of Convergence for Information Technology
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• v.8 no.4
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• pp.45-53
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• 2018

The study on the used the Korean Youth Risk Behavior Web Based Survey to investigate the convergence factors influencing affect the oral health with subjective depression experience of adolescent. The dependent variable included oral health behavior and subjective symptom experience and the independent variable included subjective depression experience. Convergence factors influencing affect the subjective depression experience was significantly higher than those without depression experience were tooth brush times(one day), tooth brush times after lunch and sealant experience among oral health behavior and was significantly higher than those without depression experience were tooth break, pain, periodontal bleeding and bad breath among subjective symptoms. As a result, it appears to the depression experiences related to oral health factor, so it is consider psychological factors to improve the oral health of adolescents.

• Journal of dental hygiene science
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• v.23 no.3
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• pp.208-215
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• 2023

Background: Dental caries in preschool children can cause early loss of teeth, reduced masticatory function, malocclusion, and speech disorders, making oral care for preschool children essential. However, because children have a poor ability to perform oral hygiene by themselves, educational tools that help establish correct oral health behaviors are required. This study evaluated the effect of toothbrushing application for kids on dental plaque removal and toothbrushing interest in preschool children. Methods: Seven 5-year-old children enrolled in a daycare center participated in the evaluation, and the same children participated in the experiment twice a week. The Pokémon Smile application (App) was used as an auxiliary application for tooth brushing, and the degree of dental plaque removal on the tooth surface was evaluated by quantitative light-induced fluorescence-digital imaging. After the experiment, children's toothbrushing preferences were investigated through interviews. Results: The levels of AREA R30 and AREA R70 measured after the children's toothbrushing as usual decreased compared to those before toothbrushing; however, the change was not significant. The levels of AREA R30 and AREA R70 measured after using the Pokémon Smile App were significantly reduced compared to those before toothbrushing. Children's interest in brushing their teeth increased by 28.59% after using the Pokémon Smile App. Conclusion: The toothbrushing application for kids effectively removes dental plaque by helping preschool children brush their teeth. It also increased preschool children's interest in tooth brushing. Therefore, an oral health education application would be useful for children who need to develop correct oral care methods and habits.