• Imaging Science in Dentistry
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• 제34권1호
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• pp.19-23
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• 2004

Purpose: To compare the diagnostic accuracy of Kodak Insight film with other intra-oral films in the detection of dental caries. Materials and Methods : Periapical radiographs of 99 extracted human teeth with sound proximal surfaces and interproximal artificial cavities were made on Kodak Ultra speed, Ektaspeed, Agfa Ektaspeed and Kodak Insight films and automatically processed. Six dentists examined the presence of dental caries using a five-point confidence rating scale and compared the diagnostic accuracy by ROC (Receiver Operating Characteristic) analysis and ANOVA test. Results: The sensitivity of Kodak Ultra speed, Ektaspeed, Agfa Ektaspeed and Insight film were 0.84, 0.77, 0.75 and 0.79 respectively. The specificity of Kodak Ultra speed, Ektaspeed, Agfa Ektaspeed and Insight film were 0.97. 0.95. 0.96 and 0.94 respectively. The mean ROC areas (Az) of Kodak Ultra speed, Ektaspeed, Agfa Ektaspeed and Insight film were 0.917, 0.910, 0.894, 0.909 respectively. There was no significant differences between Az of Insight film and other films (p = 0.178). Conclusion: Theses results suggested that Kodak Insight film have the comparative diagnostic accuracy of dental caries with Ultraspeed and Ektaspeed films.

• 동의생리병리학회지
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• 제21권1호
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• pp.199-203
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• 2007

Dental caries is a major worldwide oral disease problem. Streptococcus mutans (S. mutans) plays an important role in the information of dental plaque and it is being noticed as major causative bacteria of dental caries. Therefore, the development of more effective, substantial and safe preventive agents against dental caries is strongly required. In the present study, inhibitory effects of the ethanol extract of the husk of pomegranate (Punica granatum L.) on the growth, acid production, adhesion and water-insoluble glucan synthesis of Streptococcus mutans (S. mutans) were examined. The ethanol extract of pomegranate husk (250 - 4000 ${\mu}$g/ml) significantly lowered the growth of S. mutans in a dose dependent manner. The acid production of S. mutans were inhibited by the presence of ethanol extract of pomegranate husk (500 - 4000 ${\mu}$g/ml) significantly. The ethanol extract of pomegranate husk (5000 - 4000 ${\mu}$g/ml) also significantly lowered the adherence of S. mutans. In water-insoluble glucan synthesis assay, 1000 - 4000 ${\mu}$g/ml of the ethanol extract of pomegranate husk significantly inhibited the formation of water-insoluble glucan. These results suggest that pomegranate husk may inhibit the caries-inducing properties of S. mutans. Further studies are necessary to clarify the active constituents of pomegranate husk responsible for such biomolecular activities.

• 한국치위생학회지
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• 제16권4호
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• pp.525-530
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• 2016

Objectives: The purpose of the study is to investigate remineralization effect according to application cycle of fluoride varnish in preschool children. Methods: The study subjects were fifty six children (92 teeth) having one or more early dental caries lesion. Fluoride varnish was applied to the primary area of maxillary and anterior mandibular teeth with the interval of one month, three months, and six months. Results: Dft index was 3.54 in male and 3.44 in female. The fluorescence loss(${\Delta}F$) value due to early caries lesions showed a significant difference in experiment groups I and II after the application of fluoride varnish, but there was no significant difference in experiment group III. After fluoride varnish application, there was a significant change in experimental group I and III. The maximum fluorescence loss(${\Delta}Fmax$) from early caries lesions showed a significant difference after application of the fluoride varnish in all three experiment groups of I, II, and III(p<0.001). Conclusions: Fluoride varnish should be recommended and applied to the children of high risk caries group in every three months.

• 한국식품조리과학회지
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• 제24권2호
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• pp.251-257
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• 2008

The purpose of this study was to examine the relationship between snack food intakes and dental caries in 661 Korean elementary school children. After each meal, 59.6% of the surveyed children ate snack foods, in particular, they ate snack heavily after lunch. The snack food items causing dental caries contained high levels of sugar and were convenience foods, which the children had preference toward. In addition, the intake frequency of snack foods substituted for meals was greater than 54%. Based on the results, the eating behaviors of children are in need of correction, and nutrition education on snack foods inducing dental caries is required.

• 한국식품조리과학회지
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• 제18권6호
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• pp.704-715
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• 2002

본 연구는 초등학교 아동의 식습관, 간식습관 및 섭식실태를 급식교와 비급식교에 따라 비교 분석함으로서 치아우식증 발생과의 관련성을 규명하고, 조사대상 아동들에게 영양교육 프로그램을 실시한 후 교육효과를 평가하고자 실시되었다. 1. 급식여부에 따른 식습관 조사 결과, 급식교 아동이 비급식교의 아동보다 아침식사의 규칙성, 식사속도, 식사량의 적당성 및 식사시간의 규칙성에 있어 바람직한 편이었고, 고기나 생선, 해조류, 우유나 유제품의 섭취정도도 약간 높게 나타나 급식을 통하여 올바른 식생활 태도가 형성되는 것으로 보여졌으며 전반적으로 영양교육 후 식습관에 있어 긍정적인 변화를 나타내 영양교육의 효과가 있었음을 알 수 있었다. 2. 카라멜, 초콜렛 및 사탕류, 비스켓류 등의 치아우식유발 지수가 높은 우식성 식품을 간식으로 자주 섭취하고 있었고 충치유발 요인 인지 시 간식을 덜 사먹겠다는 아동이 급식교에서 다소 많았으며, 물리적 청정작용을 하는 껌을 간식으로 씹는 경우는 1주일에 2∼3회가 가장 높게 나타났다. 또한 영양교육 후 치아우식에 영향을 줄 수 있는 시간인 저녁 식사 후에 간식을 먹는 아동과 TV 광고로 인해 간식을 선택하는 아동의 비율이 낮아졌으며, 세정식품인 채소와 과일, 단백질, 해조류, 우유 또는 유제품의 섭취는 교육 후 약간 증가하였다. 3. 치아우식과 관련이 있는 당질군을 제외한 모든 식품군에서 비급식교 아동보다 급식교 아동의 섭취횟수가 높게 나타났으며 1인 1일 우식성 식품의 평균 섭취 횟수는 평균 5.04회였고, 고체식품보다는 액체식품으로 섭취하는 횟수가 다소 높았다. 치아표면에서 청청작용을 하여 치면세균막의 형성을 감소시켜 우식증을 예방하는 세정식품의 평균 섭취 횟수는 1인 1일 기준식품 표준섭취 횟수보다 높은 9.33회로 나타났다. 1인 1일 우식발생 가능 시간은 100.9분이었는데, 액체 식품의 우식발생 가능 시간은 56.2분으로 44.6분인 고체 식품에서 보다 높게 나타났다. 이상의 결과에서 식습관이 치아우식발생과 밀접한 관계를 가지고 있으므로 초등학교 아동에 있어 치아우식을 유발할 수 있는 간식의 섭취를 줄이되 우식성 식품을 간식으로 섭취한 후에는 잇솔질을 반드시 실시하도록 하며 정규식사에서 치아를 보호하는 세정식품의 섭취에 대한 영양교육이 지속적이고 단계적으로 꾸준히 이루어져야 한다고 본다.

• 대한소아치과학회지
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• 제47권3호
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• pp.248-256
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• 2020

이 연구의 목적은 영유아구강검진의 효과를 치아우식 예방, 우식 치료행위, 치과진료비용이라는 다각적 관점에서 분석, 평가하는 것이다. 국민건강보험공단에서 제공하는 영유아검진코호트 데이터베이스를 활용하였고, 2008 - 2015년에 시행된 구강검진 1차 32,937건, 2차 22,608건, 3차 13,708건 및 2008년생과 2009년생 27,944명의 치과 진료 241,043건을 분석하였다. 2차와 3차 구강검진 결과를 통해 산출한 우식경험유치지수와 유치우식경험자율은 각각의 선행 구강검진 수검 횟수가 증가함에 따라 감소하였다. 유치의 급여 수복치료 및 치수치료, 유견치와 유구치의 조기 발치 시행 횟수는 구강검진 수검 횟수가 증가함에 따라 감소하였고, 전체 급여 치과진료비용 또한 수검 횟수가 증가함에 따라 감소하였다. 영유아구강검진은 치아우식을 예방하여 치아우식 관련 치료의 가능성을 줄이고, 따라서 치과진료비를 절감하는 효율적이고 경제적인 구강 건강 관리 방법이다.

• 한국치위생학회지
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• 제11권6호
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• pp.1005-1016
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• 2011

Objectives : The purpose of this study was to examine the awareness of mothers on their children's oral health and their concern for that by socio-demographic characteristics and the relationship of their awareness of methods of dental-caries prevention to their practice of the methods. Methods : The subjects in this study were 337 guardians of preschoolers at kindergartens and daycare centers. A self-administered survey was conducted from April 25 to May 27, 2011, and the collected data were analyzed by the statistical package SPSS 18.0. Results : 1.Self-rated concern for children's oral health, 87.7 percent and 12.1 percent replied, "So-so." Whether they were working or not and whether they were mainly responsible for child rearing made significant differences to that(p<.05). 2. As to subjective awareness of their children's oral health, the largest group of the mothers answered "So-so." (44.9%) The second replied that their children were in good oral health(40.5%), and the third group in poor oral health(14.2%). 3. The relationship between self-rated concern for their children's oral health and awareness of methods of caries prevention, statistically significant differences were found according to toothbrushing education and sealant(p<.05). There were no statistically significant differences in practice, but application of fluoride was the least. 4. The relationship between self-rated awareness for their children's oral health and awareness of the preventive methods of caries, there were statistically significant gaps in awareness of toothbrushing education(p<.05). In practice, statistically significant gaps were found in practice of toothbrushing education and sugar-intake restriction(p<.01). 5. In regard to the correlation between awareness and practice of the preventive methods of caries, awareness of all the factors involving toothbrushing education, sealant, application of fluoride and restriction of sugar intake had a significant positive correlation to practice of them. Better awareness led to better practice. Conclusions : In order to ensure children's successful oral health care, more authentic education of how to prevent dental caries should be offered by experts such as dental hygienists and dentists. Especially, detailed information on application of fluoride, restriction of sugar intake and pit and sealant should be provided for mothers to help their children to stay away from dental caries.

• 대한화장품학회지
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• 제17권1호
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• pp.39-47
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• 1991

Dental caries has been reported to be infectious disease by Streptococcus mutans(S. mutans). The ability of S. mutans to produce dental plaque has been shown to be related to glucan synthesis from sucrose by glucosyltransferase (GTase). Glucan is known to play an important role in the initiation of smooth surface caries. For preventing dental caries by traditional medicines, two hundred kinds of natural products were assayed for inhibiting activity against S. mutans and GTase. During the assay course, we chose some active plants against S. mutans and GTase and then applied these plant extracts to toothpaste.

• 치위생과학회지
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• 제13권2호
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• pp.182-190
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• 2013

이 연구는 2012년 11월 12일부터 11월 30일까지 D대학교에 재학 중인 치과대학 대학생 100명을 대상으로 타액을 채취하여 타액으로부터의 Streptococcus mutans 분포 정도를 측정한 후 치아 우식활성도를 분석하는 실험연구이다. 타액을 채취하기 전 간단한 자기기입식 설문지를 작성하였고, paraffin을 1분간 저작하여 타액을 컵에 모은 후 screening strip 전면에 타액이 충분하게 묻도록 하여 측정하였다. 연구 대상자의 일반적 특성을 파악하기 위해 빈도와 백분율을 산출하였고, 연구대상자의 흡연과 음주 유무 혹은 기간에 따라 치아 우식활성도의 연관성을 알아보기 위하여 빈도와 백분율, $x^2$ 검증을 통하여 파악한 결과는 다음과 같았다. 1. 연구대상자들의 50% 이상에서 치아 우식활성도 평가의 음성단계를 나타내고 있었다. 2. 흡연은 S. mutans의 분포에 영향을 미치고 있으며, 흡연 기간이 길어질수록 S. mutans가 많아짐에 따라 치아 우식활성도가 높아졌다. 3. 음주는 S. mutans의 분포에 크게 영향을 미치고 있으며, 음주 기간이 길어질수록 S. mutans가 많아짐에 따라 치아 우식활성도가 높아졌다. 4. 연구대상자의 흡연 및 음주유무, 성별에 따른 우식활성도의 평균 차이는 맨휘트니 유 검정을 사용하여 분석한 결과, 우식의 단계와 흡연 및 음주유무, 성별에 따라 치아우식에는 근사유의확률 양측의 값이 각각 0.476, 0.974, 0.772이었으며, 모두 통계학적인 유의성은 없었다. 결론적으로 빈도와 백분율을 흡연과 음주는 초기 우식 유발 세균인 S. mutans의 분포에 영향을 미치고 있는 것으로 나타났으나, 통계학적으로는 유의미한 차이는 없었다. 향후 관련된 여러 요인들을 모두 관리, 통제하거나 추가적으로 선별 투입한 실험연구를 통하여 구강건강을 위한 다양하고 더 많은 사례연구가 요청되고 있다.

• 한국치위생학회지
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• 제12권1호
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• pp.27-35
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• 2012

Objectives : This study was performed to provide the basic data for oral health of infants, through the comparison of Streptococcus mutans activities(the representative bacteria of initial dental caries), in main nutritional foods for infants: breast milk, milk powder, and soya milk. Methods : The study targeted 30 infants and the saliva was sampled after the oral examination. The pH of sampled saliva was measured; and the sample of 'the saliva', 'the saliva and breast milk', and 'the saliva and formula milk' by researcher were produced; and the measurement was repeated 7 times. Results : As a result of examining the change of colony number of Streptococcus mutans by hour, the bacterial activity took in the source of nutrition took place in the first place; and in the group with dental caries, breast-feeding at night occurreds most frequently. Due to the combined activities, such as the increase in the contact time, the existence rate of dental caries appeared high. However, as the improvement of breast-feeding is closely related to the nutrition supply to babies, rather than the improvement of breast-feeding, the 12 hours after the culture in which Streptococcus mutans activities started was considered. Conclusions : In case of breast-feeding at night, it is necessary to remove the dental plaque in the mouth, before 12 hours has passed. Especially, using toothbrush and toothpaste to decrease the occurrence of dental caries, after the eruption of teeth, is recommended for oral administration.