• Title, Summary, Keyword: 치약

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A convergence study of cytotoxicity evaluation of adult dentifrices (성인용 치약의 세포독성 평가의 융합적 연구)

  • Choi, Yu-Ri;Shim, Youn-Soo;Jang, Sun-Ok
    • Journal of Digital Convergence
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    • v.17 no.3
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    • pp.305-312
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    • 2019
  • This study was conducted to effect the cell activity and cytotoxicity of dentifrice. For the study, 6 kinds of general dentifrice, 3 kind of whitening dentifrice, 2 kinds of natural dentifrice and SLS(sodium lauryl sulfate) of positive control group. Immortalized human gingiva fibroblast cell was used for the study, WST test for cell activity and Agar diffusion test for cytotoxicity. Agar diffusion test showed high cytotoxicity in general dentifrice test group and whitening dentifrice test group, but low cytotoxicity in natural dentifrice test group. As a result of cell nucleus staining, cell shape and nuclear activity showed that the highest activity in natural dentifrice group, followed by whitening dentifrice group and general dentifrice group. As a result of this study, the cytotoxicity of different ingredient and according to the use to dentifrice. As a result of this study, we confirm cytotoxicity of kind and components according to the purpose of using dentifrice. Therefore, it is necessary to indicate the detailed ingredients of dentifrice for the smart choice of consumers.

Occlusion Effect of Dentinal Tubules of the Desensitizing Dentifrices Marketed in Korea (국내 시판중인 지각과민 완화 치약의 상아세관 폐쇄효과)

  • Lee, Su-Young
    • Journal of dental hygiene science
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    • v.11 no.5
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    • pp.431-436
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    • 2011
  • The aim of this study was to compare the effects of the short-term use of the desensitizing dentifrices marketed in Korea in vitro. Fifty human dentine specimens were wet ground with silicone carbide paper and etched with 6% citric acid for 90 seconds to allow complete opening of the dentinal tubule. Ten specimens from each group were brushed for 50 and 150 strokes with a V8 Cross Brushing Machine(Sabri Co., U. S. A). All the specimens were evaluated by SEM(${\times}3000$). The degree of occlusion of the dentinal tubules was quantified using an image analyzer. The results were analyzed by one-way ANOVA and Tukey's multiple comparisons using Window SPSS. The dentifrices containing nano-carbonate apatite, potassium nitrate and hydroxyapatite showed significantly higher occlusion effects than the other dentifrices after toothbrushing for 50 strokes(p<0.05). The Sensodyne freshmint$^{(R)}$dentifrice showed 34% fewer open tubular areas compared with the Sensodyne original$^{(R)}$dentifrice for 50 strokes. According to the short-term use of desensitizing dentifrices, the dentifrices containing nano-carbonate apatite, potassium nitrate and hydroxyapatite were most effective in occluding the dentinal tubules.

An Analysis on the Purchase Satisfaction, Repurchase Intention and Recommendation according Toothpaste Choice Standard (치약선택기준에 따른 구매만족, 재구매 의도 및 권유 의사 분석)

  • Han, Ye-Seul;Lee, Ji-Eun;Moon, Hak-Jin;Lim, Soon-Ryun;Cho, Young-Sik
    • Journal of dental hygiene science
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    • v.15 no.1
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    • pp.77-82
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    • 2015
  • The purpose of this study was to understand the buying behavior characteristics of the customers. Also, it was intended to provide information to provide companies marketing strategy. The criteria of purchasing toothpaste was to try to understand the impact on satisfaction, recommendation and repurchase Intention. The study was surveyed 248 customers who re-buy the toothpaste in oral care products showroom at university dental hospital. Statistical analysis was performed using PASW Statistics 18.0 and AMOS 18.0 at the 5% significance level. The results were as follows: 'Flavor', 'Price', 'Brand', 'Function', 'Design' of toothpaste and satisfaction showed a positive correlation. Satisfaction and repurchase intention, Recommendation showed a positive correlation. Selection criteria that affect the satisfaction when customers buy toothpaste, 'Function' was the greatest and others became the order of the 'Brand', 'Flavor', 'Price'. Satisfaction affect the recommendation and repurchase Intention. If customers are satisfied with the toothpaste products, showed the Repurchase Intention, have shown opinion that is willing to recommend this product to others. Therefore, dentistry and manufacturers of toothpaste must share a lot of information about toothpaste with customers. Also, information, function, flavor of toothpaste as well as other oral care product, It will be a needed the continuing research and development.

COMPARATIVE STUDY OF THE EFFECT OF TWO DIFFERENT DENTIFRICES ON THE DENTAL PLAQUE DEPOSIT (두 종류의 치약이 치태침착에 미치는 영향에 관한 비교연구)

  • Han, Soo-Boo
    • The Journal of the Korean dental association
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    • v.16 no.9
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    • pp.695-701
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    • 1978
  • 서울대학교 치과대학 4학년 학생 20명을 대상으로 상악 좌우측제1대구치 협, 구개면 하악 좌우측 중절치, 측절치, 견치의 순설면의 치태 침착 여부를 시판중인 럭키치약과 환인소금치약의 치태침착억제 효과를 1일, 5일, 10일, 14일, 21일, 28일째 Son and Muhlemann plaque index로 조사한 결과 환인소금치약이 럭키치약에 비해 낮은 치티지수를 얻었지만 (실험첫날과 마지막날의 치태지수의 감소백분율로 보면 환인소금치약의 경우 22.63%, 럭키치약의 경우 12.21%를 얻었다.) 통계학적으로 별다른 의미를 찾을 수 없었다.

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A Study on the Parent Awareness for Use of dentifrice and Toothbrush among Preschoolers (영유아의 치약 및 칫솔 사용에 대한 부모의 인식도 조사)

  • Lee, Kyeong-Hee;Kang, Young-Hee;Song, Gui-Sook
    • Journal of dental hygiene science
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    • v.9 no.4
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    • pp.435-441
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    • 2009
  • The purpose of this study was to examine the use of dentifrice among preschoolers in an attempt to provide consumers with the right information on the choice of dentifrice and toothbrush for different age groups of children. The subjects in this study were parents who raised preschoolers in Seoul and Gyeonggi Province. A self-administered survey was conducted over approximately three months from May to July 2007 to find out the state of their children's use of dentifrice. After the collected data were analyzed, the following findings were given: The greatest group (51.5%) needed parental help with toothbrushing. The biggest group of the patients (35.6%) considered it necessary for children at the age of 6 and 7 to brush their teeth with the help of their parents. As to dentifrice squeezing and parental outlook on that, the biggest group of the parents (49.4%) replied their children squeezed the dentifrice for themselves, and the greatest group (42.2%) thought that children needed parental help with dentifrice squeezing by the age of five. Regarding dentifrice swallowing and parental perception of it, the biggest group (61.9%) saw their children swallowing the dentifrice, and the greatest group (73.7%) believed that children must not swallow the dentifrice. The biggest group of those who found it okay for children to swallow the dentifrice (62.5%) thought that it would be no problem to swallow the dentifrice for child. Concerning the use of toothbrushes, the biggest group (96.7%) had their children use toothbrushes for child. The above-mentioned findings of the study showed that the children who are at the age of 3 or down should use non-fluoride containing dentifrice or just a small amount of fluoride that is as equal as the size of a pea. Children must brush their teeth under the guidance of their parents, and sustained education should be provided about that.

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An Evaluation of Whitening Effect and Microhardness on the Enamel Surface by White Toothpaste (미백치약으로 처리된 치아의 미백효과와 미세경도 변화)

  • Kim, Hye-Young;Nam, Seoul-Hee;Choi, Jung-Ok;Kwun, Hyeon-Sook;Jeong, Mi-Ae
    • The Journal of the Korea Contents Association
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    • v.13 no.10
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    • pp.427-433
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    • 2013
  • The aim of this study was to evaluate the efficacy of bleached tooth with white toothpaste on the whitening effect, microhardness test. Forty-four human interior teeth were randomly assigned to two groups as follows: Group 1 was used general toothpaste as control, Group 2 exposed to white toothpaste at 3 times a day for 3 minutes. The total application time was 4 weeks. After each application, all tooth were washed with distilled water and immersed in artificial saliva. The color change and microhardness were measured using CIELab Color system and microhardness tester. The data were analyzed by student t-test, using SPSS 20.0 statistical computer program (SPSS Inc., USA). The overall color changes (${\Delta}E$) by white toothpaste have a capability of the whitening efficacy by factor of 2.3 times larger compared with general toothpaste. Moreover, the application of white toothpaste did not cause any microhardness reduction on enamel surface.

Influence of Microhardness and Mineral Content on Fluoride Materials Containing Low Concentration with Sodium Fluoride (저농도의 불화나트륨을 함유한 불소제제가 치질의 강도와 화학적 성분에 미치는 영향)

  • Kim, Hye-Young;Nam, Seoul-Hee;Jeong, Mi-Ae
    • The Journal of the Korea Contents Association
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    • v.13 no.4
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    • pp.312-319
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    • 2013
  • The purpose of this study was to evaluate the efficacy of gargle and toothpaste containing low concentration with sodium fluoride on the remineralization through the surface microhardness and mineral content in enamel. After 4 weeks-application, the enamel surface was measured using microhardness tester and the calcium (Ca) and phosphorous (P) concentration of mineral content by electron probe microanalyzer (EPMA) analysis. By combining fluoridated gargle with toothpaste, a remineralized enamel resulted in significantly significant differences among the four groups (p<0.05). The Ca change treated with 0.23% fluoridated toothpaste and 0.02% fluoridated gargle with 0.23% toothpaste demonstrated the highest among the other groups. In conclusion. the fluoridated gargle with toothpaste by low concentration showed a significantly greatest synergistic effect on remineralization of the enamel than the other groups.

Improvement of Rheological Properties of Silica Composites Employing Response Surface Methodology (반응표면분석법을 이용한 실리카복합재료의 레올로지 속성 개선)

  • Yim, Gie-Hong;Yang, Seung-Nam;Kim, Nam-Ki
    • Polymer(Korea)
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    • v.32 no.1
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    • pp.19-25
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    • 2008
  • The purpose of this study was improving the rheology properties of dentifrice by finding optimum binders polymer system which consists of carboxymethylcellulose (CMC), carbomer, and Mg/Al silicate. Response surface methodology (RSM) was employed to investigate the correlation between polymers and rheological properties of dentifrice and to optimize responses. Rheological properties were measured with oscillatory rheometer. As a result, it was identified that gel strength and yield stress were dependent on contents of CMC and carbomer and CMC caused long stringiness of dentifrice. And springness of dentifrice was dependent on contents of CMC and Mg/Al silicate. Optimum components proportion of polymers and silicate were obtained by responses optimization process. According to determined optimum components proportion, it was possible to observe a dentifrice with improved rheological properties.