• The korean journal of orthodontics
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• v.6 no.1
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• pp.47-54
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• 1976

This study was conducted to investigate the effects of multibanded orthodontic appliances on dental caries activity. The subjects consisted of 50 males and females with multibanded orthodontic appliance and the same number of caries free group. The following conclusions were obtained, 1. There was significant difference between the experimental group and control group in the tests of Snyder colorimetric test, acid :buffering capacity and oral glucose clearance test (at $5\%$ level of significance). 2. There was no significant difference between the experimental group and control group in the tests of unstimulated salivary flow fate, stimulated salivary flow rate and salivary viscosity test (at $5\%$ level of significance). 3. Dental caries activity was higher in experimental group than in control group.

• Journal of the korean academy of Pediatric Dentistry
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• v.34 no.1
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• pp.19-26
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• 2007

The purpose of this study is to evaluate oral health status, caries-inducing bacterial activity of the mental retardation students, and developing motivation method for improving oral hygiene management by clarifying the relationship between caries-inducing bacterial activity and oral health status of mental retardation students. Caries experience indices, caries susceptibility test, gingival health evaluation, and oral hygiene management and oral health survey were performed. Results were as follows : 1. The DMFT index of disabled students(12 years) was 2.07. 2. The gingival inflammation was occurred more frequently in older ages. 3. There also was a high positive correlation between caries incidences and the results of caries-inducing bacterial activity test especially in deciduous teeth. This result suggested that the Dentocult SM mutans test as a caries activity test is a reliable method for measuring the status of dental caries in mental retardation students. Because it would motivate the mental retardation students to care more actively for their oral hygiene if they learn how much dental caries-inducing bacteria are living in their mouth by observing the bacterial colony on the cultured test strip, it can become a possibly efficient educational tool for the mental retardation students.

• Journal of the korean academy of Pediatric Dentistry
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• v.33 no.4
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• pp.615-623
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• 2006

The purpose of this study was to evaluate the specificity, sensitivity, and diagnostic power of caries activity test using LED fluorescence. The subjects of this study were 55 children of $6{\sim}7$ years old. LED light were irradiated to labial or buccal surface of all teeth. Fluorescence from initial carious lesion of teeth illuminated by an LED light was observed through barrier filter and the number of teeth showing lesion, size and position of lesion were counted. Streptococcus mutans colony counting and dDfFtT rate test were also done and their correlation was compared. And then specificity, sensitivity, diagnostic power of optical caries activity test using LED light were evaluated. 1. There was positive $correlation({\gamma}=0.43)$ between LED fluorescence test and Streptococcus mutans count(P<0.05). 2. When visual examination was defined to standard testing method, the specificity, sensitivity, diagnostic power of LED fluorescence test were 100%, 76.1%, and 100%. 3. When dDfFtT rate was defined to standard testing method, the specificity, sensitivity, diagnostic power of LED fluorescence test were 88.9%, 47.8%, and 95.7%. 4. When S. mutans colony counting was defined to standard testing method, the specificity, sensitivity, diagnostic power of LED fluorescence test were 100%, 58.7%, and 100%. Considering the above results, optical caries activity test using LED light could be regarded as a practical method because of its close relationship with microbiological caries activity test.

• Journal of Korean society of Dental Hygiene
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• v.17 no.2
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• pp.283-294
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• 2017

Objectives: The purpose of the study was to investigate the effect of calcium concentration in saliva on dental caries activity after consuming calcium. Methods: A total of 59 adult women aged 20 to 40 years were surveyed for calcium intake. The daily average calcium intake was analyzed through dietary records of the subjects. The subjects were divided into two groups based on daily average calcium intake. Salivary pH and concentrations of minerals in the saliva were obtained from A group and B group. Calcium ($Ca^{2+}$) and magnesium ($Mg^{2+}$) concentrations in saliva were measured by HPLC-Ion chromatography using 15 mM sulfuric acid. The dental caries activity test was quantified by salivary buffer capacity test and plaque pH test. Results: The mean $Ca^{2+}$ concentrations of A group was $12.75{\mu}g/m$, the mean $Ca^{2+}$ concentrations in the B group was $16.30{\mu}g/mL$ (p<0.05) and respectively, $Mg^{2+}$ concentrations were found to be $0.48{\mu}g/mL$ and $0.51{\mu}g/mL$. Calcium intake and calcium concentration in saliva showed a significant correlation (r=0.380). Conclusions: The mean $Ca^{2+}$ concentrations in saliva was higher in the high calcium intake group. Therefore, calcium intake in saliva was correlated with dental caries.

• 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.33 no.3
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• pp.548-557
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• 2006

• Journal of the korean academy of Pediatric Dentistry
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• v.29 no.4
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• pp.568-573
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• 2002

The purpose of study was to investigate the caries activity factors of children during orthodontic treatment. Fifty children with fixed or removable intraoral orthodontic appliances were examined for their Cariostat caries activity test scores, gender, age, duration of treatment, appliance type, treatment site, Angle's classification of malocclusion, and the number of teeth with caries experience. The mean age of the high caries activity group was significantly higher than that of the low caries activity group(P<0.01). The duration of treatment of the high caries activity group was longer than that of the low caries activity group, but the difference was not significant(P>0.05). The fixed appliance group showed higher caries activity than the removable appliance group(P<0.01). The caries activity of Angle Class III group was lower than that of Angle Class I group, not significant statistically(P>0.05). The number of teeth with caries experience in the high caries activity group was lower than that in the low caries activity group, not significant statistically(P>0.05).

• Journal of the korean academy of Pediatric Dentistry
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• v.23 no.4
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• pp.925-930
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• 1996

The purpose of this study was to know whether the information of caries activity and caries experience of the children can be used to predict the behavior of the children during the dental treatment. The subjects of the study were one hundred and eighty-one preschool children, three to six years old. Salivary reductase activity was tested by the Resazurin Disc Test. Caries experience was examined. The children's behavior was observed using the rating scale of Frankl. Salivary reductase activity of the negative behavior group was slightly higher than that of the positive behavior goup, but the difference was not significant. dt index and ds index of the negative behavior group were significantly higher than those of the positive behavior group. There were no significant differences in ft index and fs index between the two behavior groups. The results suggest that the negative behavior of a child can be predicted when the child has many untreated dental caries.

• Journal of dental hygiene science
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• v.12 no.2
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• pp.93-102
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• 2012

The purpose of this study was to evaluate the effectiveness of oral health care including some of dental caries activity test on dental clinics of regular visiting on primary school children. The dental surveys and initial caries control and some of dental caries activity test (Alban's, Lactobacillius, S'mutans, un-stimulation saliva test)were performed by trained dental hygienists with dentist from on 6 to 13 years old patients of S dental hospital in Gwangju Metropolitan Cities. The sample size of 39 children (18 in oral health care group, 21 in control group ) and accepted to their parents. The results of caries activity test score(Alban's and Lactobacillius test)were reduced 1.4 to 1.6 times in oral health care group(OHCG). Oral Hygiene Simplified Index of OHCG was reduced 1.6 times during six months and 1 year. DMFT index of OHCG was reduced 1.4 times more than Control Group(CG) after 1 year. DT index of OHCG was reduced 12 times more than Control Group(CG) after 1 year. Dental health capacity of the first perment molar of OHCG was reduced 1.02 times more than CG after 1 year. From the above results, long life related incremental oral health care system has reinforced to primary school children in dental clinic with oral health professional teams.

• Journal of Korean Academy of Dental Administration
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• v.6 no.1
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• pp.11-18
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• 2018

The aim of this study was to evaluate the competency of the Easyperio test, a genetic test method based on real time PCR for the detection of bacteria that cause dental caries and periodontal disease. To verify the validity of this text, various dental health evaluations were administered to 33 boys between the ages of 12 to 14, as this age group commonly experiences dental caries. These evaluations included a dental caries experience survey, a first molar health evaluation, the Dentocult Streptococcus mutans (SM) strip mutans, the Dentocult Lactobacillus spp (LB) test, and the Easyperio test. The correlation coefficients between the level of the Dentocult SM strip mutans and the dental caries experience were DT (R=0.570, p=0.001), DMFT (R=0.376, p=0.031), and first molar health (R=-0.395, p=0.023). The correlation coefficients between the amount of SM in the Easyperio test and dental caries experience were DT (R=0.528, p=0.002), DMFT (R=0.369, p=0.035), and first molar health (R=-0.426, p=0.013). The correlation coefficients between the level of the dentocult SM strip mutans and the SM amounts of the Easyperio test were S.mi (R=0.564 p=0.001) and S.mu (R=0.621, p=0.002). The correlation coefficients between the level of the Dentocult LB test and the SM amount of Easyperio test was S.mi (R=0.495, p=0.003). In conclusion, Easyperio test may be an easy and effective method for the differentiation and diagnosis of dental caries through quantitative and qualitative analysis of oral bacteria.