• Title/Summary/Keyword: dental Caries

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In Vitro Anti-Cariogenic Activity of Dichloromethane Fraction from Rheum undulatum L. Root

  • Song, Ju-Hee;Yang, Tae-Cheol;Chang, Kee-Wan;Han, Seong-Kyu;Yi, Ho-Keun;Jeon, Jae-Gyu
    • Archives of Pharmacal Research
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    • v.29 no.6
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    • pp.490-496
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    • 2006
  • This study aimed to evaluate in vitro effects of Rheum undulatum L. root on the development of dental caries, especially its effects on viability, dental plaque formation, and glycolytic acid production of Streptococcus mutans and Streptococcus sobrinus. Methanol extract of Rheum undulatum L. root and its fractions were prepared and tested. Among the test extract and fractions, dichloromethane fraction (DF) showed the most active antibacterial activity (inhibition zone: 13-17 mm) against S. mutans and S. sobrinus in a disc diffusion method. Minimal inhibitory concentrations (MICs) of DF against these bacteria ranged from 0.25 to 0.5 mg/mL. Furthermore, DF significantly inhibited the caries-inducing factors of these bacteria. At sub-MIC levels, DF inhibited in vitro dental plaque formation by S. mutans and S. sobrinus ($IC_{50}$= 0.079 and 0.142 mg/mL, respectively), which was caused, in part, by the inhibitory effect on the activity of glucosyltransferases. A significant reduction of glycolytic acid production was found at the concentration as low as 0.032 mg/mL for S. mutans and 0.063 mg/mL for S. sobrinus. The possible bioactive compounds that are inducing in vitro anti-cariogenic activity of DF are unknown. Based on the preliminary phytochemical analysis, the activity of DF may be related to the presence of anthraquinones, cardiac glycosides, coumarines, sterols/terpenes, and phenolics. These results indicate that DF is probably useful for the control of dental plaque formation and subsequent dental caries development.

A Study on Oral Health Condition According to Intake Frequency by Food Groups (식품군별 섭취 빈도에 따른 구강 건강상태 검진 조사 -국민건강영양조사 제5기 원시자료에 근거하여-)

  • Kim, Ji-Hye;Lee, Mi-Hee;Kim, Hye-Youn
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.2
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    • pp.1010-1019
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    • 2014
  • This study applied an original survey of an objective National Health Nutriment Research. It picked the youth up from 14 years old to 19 years old and examined an influence relationship of four heads such as DT, DI, DMFT, DMFI which investigated in heads of dental inspections based on an intake frequency questionnaire by food group. It was proved that Korean dietary culture which eats rice and kimchi as staple food had an great effect on DT, DI, DMFT, DMFI And rice and cereals, fruits and vegetables like a cabbage turned out to be factors that can lower dental caries. The dental caries can be reduced by the more intake frequency of rice. And also, intake of fish like anchovy and meats like pork and beef can reduce development of dental caries too. Especially, the larger intake frequency of carbonated drinks and fast food such as hamburger and pizza can make a growth of dental caries.

A Convergence Study on the Effects of Obesity and Diet on Dental caries: Use of data from the National Health and Nutrition Survey 2008, 2018 (비만 및 다이어트가 치아우식에 미치는 영향에 관한 융복합 연구: 국민건강영양조사 2008, 2018자료)

  • Son, Eun-Gyo;Park, Il-Soon
    • Journal of Digital Convergence
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    • v.19 no.10
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    • pp.319-327
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    • 2021
  • The aim of this study is to identify the relationship between obesity and dieting to dental care in a convergent manner. This is a secondary analysis study using data from National Health and Nutrition Survey(2008 & 2018), and the subjects of the study are those with permanent treatment experience. The data in this study were t-test, ANOVA and regression analysis using SPSS /WIN 24.0. As a result of the study, The experience of permanent tooth caries according to gender was high in woman(M=.76, W=.83), and the experience of permanent tooth caries according to the educational level showed that the caries experience of high-educated level(College or higher=.92). In the difference according to the subjective body type recognition, it was confirmed that obesity was associated with the experience of permanent tooth caries. Among the weight control methods, fasting was the most influential on the permanent tooth caries experience. The experience of permanent tooth caries according to the weight change was found to have an effect on both weight loss and increase, In future studies, not only studies of sugar intake related to obesity, but also proper oral health education study that informs about the risk of dental caries in the diet that is progressing in line with the current trend should be continued.

Comparison of Anticariogenic Effect after Applying Fluoride Varnish on Sound and Artificial Caries Enamel (정상법랑질과 인공우식법랑질에 불소바니쉬 도포 후 항우식 효과 비교)

  • Jeong, Moon-Jin;Lim, Ji-Hyang;Min, Ji-Hye;Jeong, Soon-Jeong;Son, Jung-Hui;Lim, Do-Seon
    • Journal of dental hygiene science
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    • v.13 no.4
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    • pp.461-470
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    • 2013
  • In order to examine the anticariogenic effect after fluoride varnish was applied to sound enamel and artificial caries enamel, anterior teeth of healthy cattle were used and divided into four groups such as group 1 (sound enamel), group 2 (application of fluoride varnish to sound enamel), group 3 (artificial caries enamel) and group 4 (application of fluoride varnish to artificial caries enamel). Remineralization on the surface of enamel and changes of crystalline structure after demineralization were observed by using a field emission scanning electron microscope (FE-SEM). Quantitative analysis of Ca and P was measured by using the energy dispersive X-ray spectrophotometer (EDS). The following conclusions were obtained: 1)Surface pattern of enamel was the roughest in group 3 due to the defects caused by porosity and microcracks. Group 4, group 1 and group 2 were followed in order; 2) It was found that pattern of crystalline structures in a group of application of fluoride varnish and a group of no application showed bigger change in artificial caries enamel than that in sound enamel. In other words, groups 4 and 1 showed a similar pattern; 3) The contents of Ca and P were higher in groups of application of fluoride varnish (group 2 and group 4) than in groups of no application of fluoride varnish (group 1 and group 3). Taken results of this study together, in the case of application of fluoride varnish, crystalline structure was changed by remineralization even in the sound enamel. In particular, porous structures showed a smooth and uniform pattern due to the recalcification in the artificial caries enamel. In addition, according to results of EDS analysis, the contents of Ca and P were increased and it had great anticariogenic effects which inhibit decalcification of sound enamel and artificial caries enamel.

Applications of Non-Thermal Atmospheric Pressure Plasma in Dentistry (상온 대기압 플라즈마의 치의학적 응용)

  • Uhm, Soo-Hyuk;Kwon, Jae-Sung;Lee, Eun-Jung;Lee, Jung-Hwan;Kim, Kyoung-Nam
    • The Journal of the Korean dental association
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    • v.52 no.12
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    • pp.783-794
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    • 2014
  • Since the introduction of non-thermal atmospheric pressure plasma in the field of the dentistry, numerous applications have been investigated. Especially with its advantages over existing vacuum plasma in terms of portability, low cost, and non-thermal damage, it can be directly applied in the oral cavity, giving number of potentials for dental application. First, possible application of non-thermal atmospheric pressure plasma in the field of dentistry is relation to dental caries and periodontal diseases. Teeth and alveolar bones are one of the strongest bony structures in our body, but it cannot be regenerated when they are damaged by dental caries or periodontal disease. Hence many studies to prevent such diseases have been carried out, though no perfect solution has been found yet. With recent studies of modifying surfaces through non-thermal atmospheric pressure application that can prevent attachment of bacteria, or studies on bactericidal effects of non-thermal atmospheric pressure plasma can be applied here to prevent oral pathogen and 'biofilm' attachment to the surface of teeth or directly eliminate the dental caries/periodontal disease causing germs. Secondly, non-thermal atmospheric pressure application will be useful on the surface of dental implant. It is well known that the success of dental implant surgery depends on the process known as 'osseointegration' that result from osteoblast attachment, proliferation and differentiation. As the application of non-thermal atmospheric pressure plasma on the surface of dental implant just before its introduction by the chair-side of dental surgery. Despite its long history, the generation of non-thermal atmospheric pressure plasma has been greatly increased with its application in dentistry.

A study on a survey of recognition level of oral health in elementary-school teachers in Jinhae city (진해시 초등학교 교사의 구강보건 인식도에 관한 조사연구)

  • Moon, Seon-Jeong;Kim, Nam-Song;Ha, Hun-Yong;Han, Yong Jae
    • Journal of Korean society of Dental Hygiene
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    • v.10 no.2
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    • pp.283-295
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    • 2010
  • Objectives : It surveyed the recognition level of oral health in class teachers who have influence of students' oral health knowledges and behaviors in our country, developed a program available for supplementing reinforcement in school oral health education, and planned the knowledge contents necessary for school oral health education hereafter. Methods : To arrange the basic data necessary for school oral health program, it carried out questionnaire survey by personal self-administration targeting 460 teachers for 19 elementary schools where are located in Jinhae city from May 7, 2007 to June 13. The following conclusions were obtained. Results : 1. The path of acquiring oral health knowledge was shown the high frequency with 23.9% and 23.3%, respectively, through publicity brochure and dental clinic. As for the opinion about the aim of maintaining dental hygiene, the prevention of dental caries was the highest with 53.7%. 2. The opinion about which the regular visit to the dentist is very effective for preventing dental caries accounted for 56.7%. The opinions about which the limit to sugar intake and the use of dental floss are effective for preventing dental caries accounted for 52.2% and 46.3%, respectively. 3. The opinion about which the fluoridation beverage intake and the sealant are effective for preventing dental caries accounted for 33.9% and 33.0%, respectively. 4. The opinion about which the regular toothbrushing without toothpaste has a little effect and has no effect on preventing dental caries accounted for 42.6% and 38.5%, respectively. Conclusions : The elementary-school age period, which is the most core field out of the whole oral health, is the important period that is formed the basis of lifelong oral health care. It surveyed the recognition level of oral health in class teachers who are in charge of direct health care while making continuous life with students, and developed program available for supplementing reinforcement in school oral health education. Through this, there will be necessity for cultivating ability available for properly managing oral health for the whole life by allowing elementary-school students, who will be led to future adults' oral health, to be formed the attitudes toward the rationally oral health care.

Diagnostic accuracy of digital images for detection of artificial chemical proximal caries (화학적 인공 인접면 치아우식증의 디지털 영상 진단능 평가)

  • Park Geum-Mee;Nah Kyung-Soo
    • Imaging Science in Dentistry
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    • v.33 no.2
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    • pp.91-95
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    • 2003
  • Purpose : To compare the diagnostic accuracy of proximal caries detection between Kodak Insight film and the Biomedisys CDX2000HQ digital (CCD) sensor. Materials and Methods: 156 proximal surfaces of extracted teeth, 78 of which had chemical artificial caries, were used in this study. Four observers interpreted the radiographs using a five-point confidence rating scale to record their diagnoses. The results were analyzed by receiver operating characteristic curves, ANOVA and Kappa values. Result: Analysis using receiver operating characteristic curves revealed the areas under each curve which indicated a diagnostic accuracy of 0.951 in Insight and 0.952 in CDX2000HQ digital sensor. ANOVA revealed no significant differences between the two images with respect to caries detection. Kappa values indicated that the mean intra-observer agreement was 0.85 and inter-observer agreement 0.71 in conventional radiography. In digital radiography, the mean intra-observer agreement was 0.84 and inter-observer agreement 0.72. Conclusion: The results suggest that no significant difference exists between the two modalities for artificial caries detection and that CDX2000HQ was as good as Insight film for this purpose.

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Full Arch Restoration through Orthognathic Surgery after Implantation on the Patients with Mandibular Prognathism and Loss of Posterior Teeth: A Case Report

  • Hwang, Kyoung-Sub;Lee, Jin-Ju;Jeon, Young-Chan;Shin, Sang-Hun;Song, Jae-Min;Lee, So-Hyoun;Huh, Jung-Bo
    • Journal of Korean Dental Science
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    • v.10 no.1
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    • pp.35-44
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    • 2017
  • In case of loss of many teeth due to dental caries or periodontal disease, improvement of masticatory function and aesthetics can be obtained through implant treatment. However, if the patient does not have a normal intercondylar relationship, it is difficult to achieve an ideal occlusal relationship with only prosthetic treatment. In particular, oral reconstruction with orthodontic treatment or orthognathic surgery is necessary for patients with mandibular prognathism. However, if the posterior occlusion collapses due to severe caries or periodontal disease, orthognathic surgery may be difficult. The occlusal vertical stop is very important for the stability of the mandibular position during occlusal reconstruction through orthognathic surgery. The patient in this case had posterior occlusion collapsed due to the caries of a large number of posterior teeth, and showed mandibular prognathism and long face. We planned a full arch restoration with orthognathic surgery and extracted the hopeless teeth. To secure the vertical stop required for orthognathic surgery, the implant was placed before surgery. After the orthognathic surgery and the final prosthesis application, the results were satisfactory for the improvement of the aesthetics and the restoration of the masticatory function.

The relationship between breastfeeding and early childhood caries (모유수유가 유아기 우식증에 미치는 영향)

  • Park, Ji-Hye
    • Journal of Korean society of Dental Hygiene
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    • v.14 no.4
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    • pp.571-576
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    • 2014
  • Objectives : The purpose of this study was to investigate the relationship between early childhood caries(ECC) and breastfeeding. Methods : Data of 670 children were derived from the Forth Korean National Health and Nutrition Examination Survey from 2007 to 2009. Demographic and socioeconomic data, oral health related behavior, and breastfeeding practice data were collected as independent variables. The ECC was used as a dependent variable. The chi-square test and logistic regression analysis were performed to identify the relationship between ECC and the other variables. Results : Multiple logistic regression analysis revealed that ECC was related with age, tooth brushing frequency, and breastfeeding practice. Conclusions : This study confirmed various risk indicators of ECC in Korean children, using Korean national survey data. Parents should begin an early and consistent mouth care regime to decrease the risk of ECC.

Preventive Effect of Sugar-free Chewing Gum Containing Maltitol on Dental Caries in situ

  • Lee, Eun-Jung;Jin, Bo-Hyoung;Paik, Dai-Il;Hwang, In-Kyeong
    • Food Science and Biotechnology
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    • v.18 no.2
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    • pp.432-435
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    • 2009
  • The preventive effect of chewing gum containing maltitol, xylitol, gum base, and sugar on remineralization were investigated. The clinical study consisted of 8 weeks' randomized, double blind, controlled, cross-over clinical trials including 24 healthy adults had chew gum. After each test week, remineralization effect was evaluated by measuring microhardness and scanning electron microscopy (SEM). Microhardness of experimental chewing gum containing maltitol or xylitol was significantly higher than that of sugar gum (p<0.005). Images of SEM showed the remineralization effect of gum containing gum base, maltitol, or xylitol compared with sugar gum. Maltitol and xylitol gums were more effective in remineralization than sugar gum. It was concluded that maltitol and xylitol can be used as sugar substitute to prevent dental caries.