• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.2
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• pp.678-684
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• 2012

The purpose of this study is to figure out and establish the basic data that can help improve management of oral healthcare for the international marriage migrantwomen. In this sense, we surveyed questions on 237 women out of 1,300 immigrant women, who have participated the program in operation by multi-cultural household supporting center, in a fashion of face-to-face investigation and on-the-spot direct cavity inspection simultaneously from May 1th to October 31th, 2010. Collected data were electro-statistically computerized under SPSS 17.0 program and analyzed with frequency analysis, recurrence analysis and logistic regression analysis respectively. Foundings were revealed as follows; On the nationality base, show the data in the ratio of 38.8% for Vietnamese, 29.1% for Philippine, 12.2% for Chinese and 6.8% for Japanese respectively. Current oral cavity status shows in the ratio of 60% with carious tooth symptoms, 40% without carious tooth symptom. Philippine women have irregular sets of tooth in many a case. (i.e., in short of numbers of teeth, due to removing individual tooth.) Japanese ladies are indicated to have less irregular sets of tooth, in comparison with that of the other immigrants from overseas. And lastly, high-income immigrant women in general were found having less numbers of unhealthy sets of tooth. Getting older, it appears that decayed tooth symptom is on the tendency of getting less in the field of dentistry circles. Immigrant ladies living with husbands under higher education background usually are found living a life in the less ratio of having toothache. A full-time immigrant housewives, however, are living everyday life in more times of suffering with tooth disease.

• Journal of dental hygiene science
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• v.15 no.5
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• pp.642-649
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• 2015

The purpose of this study was to evaluate the association between oral health status and oral health-related quality of life (OHRQoL) by using the Oral Health Impact Profile-14 (OHIP-14) among adolescents in a metropolis of Korea. A total of 119 students in 1st grade in middle school and 1st grade in high school participated in this cross-sectional study. Oral examination was conducted by two trained dentists to collect in for mation about Decayed, Missing, and Filled Teeth (DMFT) and Community Periodontal Index (CPI). OHRQoL was evaluated by short-form of OHIP-14. Wilcoxon correlation, Kruskal-Wallis test and multiple regression analyses were performed to assess the association between oral health status and OHRQoL. All data was analyzed by SPSS 22.0 and the significance level was set at 0.05. The average of OHIP-14 score in adolescents having no dental caries ($17.88{\pm}5.13$) was higher than those having more than one DMFT index ($19.75{\pm}7.16$). The average of OHIP-14 score in adolescents having bleeding observed ($20.21{\pm}8.01$) was higher than those having more than calculus detected ($18.66{\pm}5.65$). The level of OHRQoL was higher in the participants perceiving better oral health condition compared to those perceiving poorer condition (p<0.05). The result of this study could provide the information that OHRQoL from adolescents positively associated with self-assessed oral health status than oral health with DMFT and CPI. Further studies are needed to well-designed follow-up studies.

• Journal of the korean academy of Pediatric Dentistry
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• v.37 no.2
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• pp.179-185
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• 2010

Molar Incisor Hypomineralization(MIH) have recently gained intensive research interests and various clinical trials. Most prevalence, etiology, treatment studies in MIH were carried out in the European countries, and data from the Korean were seldom. This study aimed to investigate the prevalence of MIH and the status of dental caries and treatment on the first permanent molars in primary school children. For this study, 1,344 primary school students in Busan and Ulsan cities were examined directly the permanent incisors and first molars. The results of the survey were as follows: 81 MIH cases were identified among 1,344 cases. The prevalence of MIH in this group of children was 6.0%. Children with MIH showed a significantly higher DMFT value for permanent teeth than children without MIH. The mean number of decayed, missed, and filled in 1st permanent molars(DMFT index) was 1.17. The rate of children with restoration on 1st permanent molar was 13.6% and the sequence of restoration materials was as follows : composite resin, amalgam, gold inlay.

• Journal of the korean academy of Pediatric Dentistry
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• v.37 no.4
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• pp.526-531
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• 2010

Early childhood caries which mainly affect maxillary anterior area, defined as 'the presence of 1 or more decayed, missing, or filled tooth surfaces in any primary tooth in a child 71 months of age or younger'. Extraction of teeth when early childhood caries affected in maxillary primary incisors often develops progressively, result in severe destruction of crowns, acute or chronic pulpitis, and periapical abscess formation. Maxillary primary incisors are need to preserve as possible, because the early loss of maxillary primary incisors may lead to various functional, esthetical, and psychological problems. It is necessary to the availability of an easy to perform technique capable of providing efficient, durable, functional, and esthetic restorative methods. Polyethylene fiber-reinforced post can be used in strengthen of composite resins that is esthetic and good physical and mechanical properties. $Ribbond^{(R)}$ is made from an polyethylene fiber, has numerous usages, its surface is treated to enhance adhesion to resins, ease of manipulation, relatively cost effective. We report this case, had restored of maxillary primary incisors with severe coronal destruction due to affecting severe early childhood caries, using polyethylene fiber-reinforced posts, composite resin cores, and celluloid crowns. We could obtain good result of treatment.

• Journal of Korean society of Dental Hygiene
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• v.11 no.1
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• pp.103-111
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• 2011

Objectives : This study of oral health problems was conducted to 311 students in Special Schools in order to inquire into the state of their oral health behaviors, to find out the main obstacles against dental services, to secure dental reasonable basis for oral health promotion. Methods : A questionnaire survey was conducted in the Special School of the 311 students in the area of the metropolitan Seoul. By means of Chi-squared test and Fisher's exact test, oral hygiene habits for each type of the subjects, the contents of dental care services, the prerequisites to improve oral health, were inquired. To evaluate the effects to the current oral health status of types of disability, 2-way ANOVA was practiced. Results : The handicapped with Visual impairment, mental retardation, multiplicity with disabilities, answered negatively in their own oral health status. 47.4% of the deaf can do brush for theirselves without the inconvenience, but in other types of disability they showed that they were helped by others. Subjects did not use the secondary oral hygiene necessaries because, except brain damage, almost of types of disability impeded the convenient use. 60 to 88.2 percent of the total respondents were the recent visitors to dental clinique within 1 year, and the most common motives of the visiting dentist, is a routine medical examination, their movements to the dentist in all types of disabilities, needed helps of others. Most of them received medical treatment at a private dentist, the handicapped preferred the private care and place(49.8%). Only in the case of the brain disorders, extremely much of the disabled answered that they were needed the preventive treatment, and the another cases of disability were largely needed the treatment of the decayed teeth. To improve the oral health of the people with disabilities, at the opening of the clinics and hospitals over a certain size, the mandatory medical facilities for the care of the disabled should be preceded and followed by the improvement of dental insurance system so as to reduce the burdens of the cost of dental care. Conclusions : The improvement of oral health policy for the disabled are needed inevitably: Development of secondary oral hygienic easy to use for the disabled, the building systems of medical dental hospital with the disabled facilities, by the improvement of the insurance system, the reduction of the burden of payments.

• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.4
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• pp.677-683
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• 2008

The purpose of study was to compare the prevalences of severe early childhood caries(S-ECC) using two different diagnostic criteria. The subjects of this study included 401 preschool children from 36 to 71 months of the randomly selected seven nurseries in Iksan city. Severe early childhood caries was defined as (1) 1 or more cavitated, missing (due to caries), or filled smooth surfaces in primary maxillary anterior teeth or (2) a decayed, missing, or filled score of ${\geq}$4 (age 3), ${\geq}$5 (age 4), or ${\geq}$6 (age 5) surfaces. The prevalence determined by maxillary anterior caries and the prevalence determined by dmfs were 26.7%, 28.9% in 3 years, 32.4%, 30.4% in 4 years, 39.4%, 41.3% in 5 years, and 35.4%, 35.9% in all, respectively. The results suggest that the two diagnostic criteria of the severe early childhood caries yield almost the same results.

• Journal of the korean academy of Pediatric Dentistry
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• v.45 no.2
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• pp.162-169
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• 2018

The purpose of this study was to compare the validity of $Cariview^{(R)}$, a new colorimetric caries activity test, with $CRT^{(R)}$ bacteria, a conventional bacterial culture method. In addition, this study assesses the correlation between the dental caries experience and activity between mothers and their children. 34 pairs of mothers and their children under the age of 6 years participated in this study with informed consent. After filling out a questionnaire and oral examination, the two caries activity tests above were performed on each subject. In the results, $Cariview^{(R)}$ scores were statistically significant with children's caries experience (r = 0.598, p < 0.01) and showed higher correlation than $CRT^{(R)}$ bacteria scores. $Cariview^{(R)}$ scores showed statistically significant correlation with the number of decayed teeth in both mothers and children (p < 0.05). In both $Cariview^{(R)}$ and $CRT^{(R)}$ bacteria tests, there was no statistically significant correlation between caries experience and caries activity (p > 0.05). $Cariview^{(R)}$ colorimetric test will be clinically useful for predicting future caries risk and establishing a preventative strategy in pediatric dentistry.

• Journal of the korean academy of Pediatric Dentistry
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• v.31 no.3
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• pp.439-447
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• 2004

The aim of this study is to survey the frequency of mutans streptococci species and biotypes isolated from dental plaque in Korean children and the relationship between species and biotypes of mutans streptococci and dft index. Dental plaques were collected from the anterior and molar teeth of upper and lower jaws in the subjects, aged below 12 years old. A dental examination was performed for dft (decayed, filled, total) with the WHO caries diagnostic criteria. The mutans streptococci from the sample were cultured selectively on mitis salivarius-bacitracine (MSB) agar plate. For biotyping of mutans streptococci, biochemical test was performed. From the culture, bacterial genomic DNA was prepared for using of PCR template for the identification of mutans streptococci at the species-level. Forty strains of mutans streptococci were isolated from dental plagues of 40 patients. The biotype I (45%) and biotype IV (32.5%) were most frequently detected. The prevalence of S. mutans and S. sobrinus was 69% and 31%, respectively. There was no positive relationship between species and biotypes of mutans streptococci and dft index. Our results revealed that biotype I and S. mutans were frequently detected in Korean children and support that dental caries incidents by many causative factors not only bacterial factor.

• Journal of the korean academy of Pediatric Dentistry
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• v.34 no.2
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• pp.255-263
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• 2007

Composite resin restorations are widely used to restore decayed teeth or preventive restoration in children. Children often receive topical fluoride treatments on a semiannual basis. However there is concern that topical acidulated phosphate fluorides (APF) may cause deterioration of composite resins. The aim of this study was to evaluate the surface changes in composite resins due to topical fluoride application. Composite resins(Solitaire $2^{(R)}$, Metafil $CX^{(R)}$, Composan $LCM^{(R)}$, $Charmseal^{(R)}$) in topical fluoride agents were immersed and their surface roughness, weight loss and SEM findings were evaluated. The results were as follows: 1. The 4 minutes-immersion group showed more roughened surface than 1 minute-immersion group and the control group showed the smoothest surface among all the materials, and there was statistically significant difference between the groups except the Composan $LCM^{(R)}$ (P<0.05). 2. There was no significant difference between the 1 minute-immersion group and 4 minutes-immersion group in weight loss (P>0.05) 3. The experimental group treated with topical fluoride gel showed generally more roughened surface than control group in the SEM findings.

• Journal of Korean society of Dental Hygiene
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• v.16 no.2
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• pp.233-240
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• 2016

Objectives: The aim of this study was to evaluate the oral health status and behavior in Korean diabetic adults. Methods: The study subjects were 11,840 adults who participated in the fifth Korea National Health and Nutrition Examination Survey(2010-2012). Diabetic status was defined by doctors and fasting blood sugar(FBS) level. Oral health status was assessed by decayed-missing-filled teeth(DMFT), community periodontal index(CPI), periodontal disease, denture needs, limitation of oral function, and chewing difficulty. The oral health behavior was evaluated by oral examination within a year, brushing times a day, and use of auxiliary oral product. The data were analyzed by descriptive analysis, chi-square tests and multiple logistic regression analyses. Results: The prevalence rate of diabetes mellitus diagnosed by doctor and FBS was 8.3% and 10.2%, respectively. The prevalence rate of periodontitis was 25.4%. The proportions of $DMFT{\geq}20$, $CPI{\geq}3$, periodontal disease, denture needs, oral function limitation and chewing difficulty in the confirmed diabetic group by doctor were significantly higher than those of the non-diabetic group(p<0.05). In multiple logistic regression analysis, the adjusted odds ratio(aOR) for periodontal disease(aOR=1.73, 95% CI=1.41-2.12), presence of denture needs(aOR=1.40, 95% CI=1.06-1.84), limited oral function(aOR=1.43, 95% CI=1.15-1.78) and chewing difficulty(aOR=1.41 95% CI=1.13-1.77) in diabetic subjects were significantly higher than those of the non-diabetic subjects. There were similar associations between diabetes defined with FBS and oral health. In oral health behavior, diabetic subjects had significantly lower odds ratios for oral examination(aOR=0.76, 95% CI=0.60-0.98), brushing time ${\geq}2$ times(aOR=0.73, 95% CI=0.57-0.93), and auxiliary oral products(aOR=0.74, 95% CI=0.59-0.94). Conclusions: There was a significant relationship between oral health status and behavior in Korean diabetic adults. Further study is needed to evaluate the underlying mechanisms between diabetes mellitus and oral health status.