• Journal of dental hygiene science
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• v.13 no.4
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• pp.403-409
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• 2013

The purpose of this study was to evaluate the correlation between caries experience, Quantitative Light-Induced Fluorescence-Digital (QLF-D) redings and new caries activity test (Cariview) results in preschool children. Fifty-seven healthy kindergarten children (male 28, female 29) were participated this study. The calibrated dentist investigated the caries experience of children and new caries activity test. Cariview samples were incubated in the activated medium at $37^{\circ}C$ for 48 hours. All QLF-D taking and readings were performed by one experienced and trained operator under identical conditions in a dental unit chair located in a darkened room. Analysis range was limited to the maxillary and mandibular anterior teeth. QLF-D redings (white spot and dental plaque) were analysed using QLF system. The dft index had a relatively high correlation with the QLF-D redings (white spot: r=0.617, simple plaque score: r=0.500) (p<0.01). Also, there was significant correlation between dft index and the Cariview score (r=0.286) (p<0.05). However, the Cariview score had no significant correlation between dt index and ft index (p>0.05). QLF-D can be evaluated objectively the initial caries lesions and dental plaque correlated with caries experience. Therefore, QLF-D will be useful to the study of caries prediction.

• 치위협보
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• s.93
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• pp.1-12
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• 2005

• Journal of Advanced Technology Convergence
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• v.2 no.4
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• pp.49-56
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• 2023

The purpose of this study was to investigate the effectiveness and perception of eco-friendly oral products by comparing and analyzing the dental bacterial film removal rate of eco-friendly toothbrushes and general toothbrushes, and by examining the satisfaction of the research subjects with toothbrushes through questionnaires. As a result of the study, there was no significant difference in the removal rate of dental bacterial film between eco-friendly toothbrushes and general toothbrushes, so it was found that the function of eco-friendly toothbrushes was not much different from that of ordinary toothbrushes, and the satisfaction with eco-friendly toothbrushes was generally positive.

• The Journal of the Korea Contents Association
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• v.13 no.9
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• pp.305-311
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• 2013

This study analyzed the oral status after recording the images by using QLF-D with targets of 38 youth people with hearing impairment and hearing language impairment. In order to investigate the state of oral hygiene, plaque index (O'Leary index) and contents of investigation of the state of the teeth included the number of sound teeth, the number of caries teeth, dental caries experience and the number of filling teeth. The following results were obtained. First, women lacked the management on plaque and had more caries teeth compared with men. In terms of impairment classification, subjects with both hearing and language impairment lacked the management on plaque and had more caries teeth. Second, subjects who did not get an oral exam for one year had more caries teeth. Oral hygiene score was the highest with the brushing time for 3-4 minutes. The number of sound teeth was increased as the brushing time was increased. In addition, the oral hygiene management time was the highest when cleaning the teeth, gums and tongue at the same time. Third, it was shown that the satisfaction of oral health education by using the new equipment was high. As a result of this study, in order to improve the oral health level of impaired students, they shall be trained to manage their teeth by themselves and educated to increase their motivation and practice. Thus, it is thought that various approaches which are differentiated from existing methods are required to be tried.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.505-510
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• 2018

This study aimed to compare the elimination effect of dental plaque between general toothbrushes and chewing toothbrushes, so as to investigate whether the chewing toothbrushes have the practicality as the alternatives of general toothbrushes and their utilities in the real life. The study subjects were 30 healthy adults in their 20s who maintained the good dental condition over 16 teeth without systemic diseases, and the decline rates of dental plaque index after usages of general and chewing toothbrushes were calculated. Upon the comparisons of dental plaque decline rates before and after the usages of general and chewing toothbrushes, PHI index was declined from 7.02 to 1.91 in case of the general toothbrush demonstrating dental plaque decline by 72.79%, while it was declined from 6.72 to 4.08 in the chewing toothbrush demonstrating decline by 39.29%. Currently, a variety of dental care items are available in the Korean market, hence, various studies are required on the dental care items so as for the people to properly choose the items.

• The Journal of the Korea Contents Association
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• v.17 no.8
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• pp.144-151
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• 2017

The aim of this cross-sectional study was to investigate the relationship between regular interdental cleaning and periodontal condition. A total of 319 pregnant women were recruited at 21 to 24 weeks of gestation. Information on demographics, health status and health behaviors including regulary use of interdental cleaning aids, that can influence periodontal condition was collected. Full mouth periodontal probing was performed. Periodontitis was defined as CAL of 4.0 mm or greater on 2 or more sites not on the same tooth. Gingivitis was defined as 15 percent and more sites showed bleeding on probing. Gingival crevice fluid sample was collected for bacterial analysis. We studied a total of 319 subjects, comprised of 116 subjects who use interdental cleaning device regularly and 203 subjects who didn't. Subjects who do not use interdental cleaning regularly had 2.3 times higher risk of gingivitis and 2.7 times of periodontitis, 2.3 times more amount of P. gingivalis. There was a significant relationship between regular interdental cleaning and periodontal condition in Korea.

• Journal of the korean academy of Pediatric Dentistry
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• v.47 no.2
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• pp.120-127
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• 2020

The aim of this study was to evaluate the antimicrobial effect of photodynamic therapy (PDT) using plaque disclosing agent, 10 - 20 mM erythrosine, as a photosensitizer. Multispecies cariogenic biofilms containing Streptococcus mutans, Lactobacillus casei and Candida albicans were formed on hydroxyapatite disc. 20 μM, 10 mM and 20 mM erythrosine were applied as a photosensitizer for 3 minutes, and then light-emitting diode (LED) irradiated for 24 seconds. Colony-forming unit (CFU) were measured and biofilms were observed using confocal laser scanning microscopy (CLSM). CFU were significantly decreased in the PDT groups using 10 - 20 mM erythrosine (10 mM, 20mM) and the results were also confirmed by CLSM. This study confirms the high antimicrobial effect of photodynamic therapy using plaque disclosing agent as a photosensitizer.

• The Journal of the Korean dental association
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• v.47 no.5
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• pp.252-259
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• 2009

치면세균막관리는 치주병과 치아우식증을 예방하는 데 필수적이다. 이러한 치면세균막관리는 자가관리와 전문가관리로 구분할 수 있는데, 이 두가지를 병행하였을 때 특히 건강한 치주를 유지하는데 도움을 준다. 자가관리는 1회성 교육으로는 불충분하며 체계적인 반복교육이 필요하다. 전문가관리는 대상자의 구강상태에 따라 일정한 주기로 계속 시행되어야 하며 $3{\sim}6$개월 주기가 바람직하다. 반복교육과 계속관리과정으로 진행되는 자가 및 전문가 치면세균막 관리 중에 대상자의 구강병 위험요소에 따라 불소도포와 치면열구 전색 등이 제공될 수 있다.

• Journal of Korean society of Dental Hygiene
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• v.8 no.2
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• pp.67-76
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• 2008

The purpose of this study was to determine the effect of dentifrice containing 0.1% extracts of garlic on dental plaque and gingivitis in a double blind and crossover clinical studies in 33 healthy adults aged from 20 to 22 years who provided a consent for their participation. Oral examination was performed through clinical periods and on day of baseline, 6, 13, 19, 25 days plaque index and gingival index were scored by Turesky' modified index and L$\ddot{o}$e & Silness index. After 12, 19, 25 days use of their respective dentifrices, statistically decreases of plaque index, gingival index were shown in both the experimental and the control group, respectively, Experimental group exhibited significantly the lower plaque levels and the higher levels of gingival health by the use of the dentifrices contained extract of garlic from 12 days compare with control group(p<0.05). The degree of decrease was more significant on gingivitis level of the experimental group than the control group(p <0.05). This result indicate that the use of dentifrice containing extract of garlic has a positve effect in preventing plaque and gingivitis and treating periodontal diseases.

• Journal of Korean society of Dental Hygiene
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• v.1 no.1
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• pp.133-142
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• 2001

The authors have studied the 8 weeks clinical examination On 32 patients of age 20s for experimental group and 34 patients of the same ages for control group, in order to find out the effect of plaque removal effect and gingival effect by use of the dentifrice contained with the Artemisiae Capillaris extract(dimethylesculetin) and NaCl. The obtained results are as followings: 1. Plaque removal effect is better at the experimental group than at the control group on 2 and 8 weeks(p<0.05). 2. There are not significantly differences on the calculus index and stain index between the experimental group and control group, during the 8 weeks experiment(p>0.05). 3. At the 8 weeks experiment, it revealed the less average scores on the PMA index for experimental group, than that of the control group(p<0.05).