• Title/Summary/Keyword: Streptococcus mutans 부착

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Convergence research on the possibility of development of oral care products using the anti-plaque activity of natural essential oils against Streptococcus mutans (천연에센셜오일의 Streptococcus mutans에 의한 치석형성 억제 활성을 이용한 구강관리제품 개발 가능성에 대한 융합연구)

  • Kim, Minhyung;Lee, So-Young;Min, Hee-Hong
    • Journal of the Korea Convergence Society
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    • v.9 no.7
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    • pp.149-154
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    • 2018
  • This article intended to examine the anti-plaque activity of 4 essential oils of Lavender, Tea tree, Eucalyptus, Lemongrass against Streptococcus mutans. In the results of measuring the anti-plaque effect against Streptococcus mutans, Minimum anti-adhesive concentration of Lavender oil was 1.0% and that of Tea tree, Eucalyptus, lemongrass essential oils was 0.5 %. Also, it was confirmed that the essential oils have the effect of inhibiting acid generation by Streptococcus mutans. It was confirmed that pH of the concentration was lowered by the acid generation under the MAC by measuring pH of the solution after incubating Streptococcus mutans and the essential oils in the thermostatic bath varying their concentration. From these results, the essential oils, particularly, Tea tree, Eucalyptus, Lemongrass essential oils are the natural material inhibiting the plaque generation and the potential that they can be used to develop the oral care products was confirmed.

CHANGES IN ADHESION OF STREPTOCOCCUS MUTANS TO NANOCOMPOSITE RESINS AFTER ACIDULATED PHOSPHATE FLUORIDE GEL APPLICATION (나노컴포지트에서 Acidulated Phosphate Fluoride 적용에 따른 Streptococcus mutans 부착량 변화)

  • Jung, Young-Jung;Kim, Young-Jae;Kim, Jung-Wook;Jang, Ki-Taeg
    • Journal of the korean academy of Pediatric Dentistry
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    • v.32 no.3
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    • pp.427-436
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    • 2005
  • Topical application of APF gel can increase the surface roughness of resin composites and the roughened surfaces may allow increased bacterial accumulation and surface staining. Resin specimens of two proprietary resin composites, Filtek Z250(FZ) and Filtek Supreme Universal(FS), and experimental resin composites containing 0%, 3%, 6% nanofillers(E0, E3, E6) were fabricated and divided into two groups of the same number; APF treatment group and no treatment group. The amount of S. mutans adhered to specimens and the mean surface roughness(Ra) were measured. The results were as follows; 1. In no treatment group, the amount of S. mutans adhered to FS was the smallest. It was significantly different from those of FZ, E3, E6(p<0.05) although it was not significantly different from that of E0(p>0.05). 2. For all resin composites used, the amount of S. mutans adhesion in APF treatment group was significantly greater than that in no treatment group(p<0.05). 3. In APF treatment group, the amount of S. mutans adhesion was significantly different between materials(p<0.05), and increased in order of FS, FZ, E0, E3 and E6. 4. Difference of the surface roughness(Ra) between materials was not statistically significant in both no treatment group and APF treatment group(p>0.05)

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EFFECT OF ROASTED BARLEY TEA ON THE ADHESIVE PROPERTIES ON SALIVA-COATED HYDROXYAPATITE BEADS OF CARIOGENIC MUTANS STREPTOCOCCI (보리차(Hordeum vulgare var, hexastichon)가 수산화인회석에 대한 우식유발성 세균의 부착에 미치는 영향)

  • Kim, Young-Jae;Kim, Chong-Chul;Kim, Kack-Kyun
    • Journal of the korean academy of Pediatric Dentistry
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    • v.29 no.4
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    • pp.618-624
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    • 2002
  • Effect of the roasted barley tea in commercial markets on the adherence to the saliva-coated hydroxyapatite(HA) beads and the cell surface hydrophobicity of Streptococcus mutans and Streptococcus sobrinus as cariogenic microorganism was examined in vitro. Adherence activity and hydrophobicity in bacteria tested in all the barley tea samples decreased and the values were different according to the type of tea and the type of treatment. The inhibition of bacterial adsorption to HA beads suggest that barley tea active molecules as catechins and melanoidins may adsorb to a host surface, preventing the tooth receptor from interacting with any bacterial adhesions. The obtained results showed that the barley tea may inhibit bacterial adherence, the first step of the pathogenesis of dental caries in which these microorganism are involved.

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ADHERENCE OF ORAL BACTERIA ON VARIOUS DENTURE RELINING MATERIALS WITH CHITOSAN (키토산을 첨가한 개상용 레진의 세균부착에 관한 연구)

  • Vang Mong-Sook;Kim Young-Yi
    • The Journal of Korean Academy of Prosthodontics
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    • v.39 no.4
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    • pp.444-451
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    • 2001
  • The purpose of this study was to evaluate the rate of adherence of bacteria on various denture relining materials and to find out the effects of chitosan, when it was added to denture relining materials. Denture relining materials such as Tokuso rebase normal $set^{(R)}$, Mild $rebaron^{(R)}$, $Kooliner^{TM}$, and New $truliner^{TM}$ were used in this study. The adherence of Streptococcus mutans was studied on the surfaces in the denture relining materials with chitosan and in those without chitosan. When chitosan was added to M17 broth and MRS broth, the viable cell count of Streptococcus mutans was reduced. The viable cell count of Streptococcus mutans on the specimens decreased in the following order : Mild rebaron, Tokuso rebase normal set, and Newtruliner and Kooliner. The deture relining materials with chitosan showed a lower rate of adherence of Streptococcus mutans than those without chitosan.

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The inhibitory Effect of Sanggenon C from the Root-bark of Morus alba L. on the Growth and the Cellular Adherence of Streptococcus mutans (상백피의 Sanggenon C에 의한 Streptococcus mutans의 생육 및 균부착 저해효과)

  • Park, Won-Jae;Lee, Hyung-Jae;Yang, Seung-Gak
    • YAKHAK HOEJI
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    • v.34 no.6
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    • pp.434-438
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    • 1990
  • The methanolic extract of the root-bark of Morus alba L.(Mulberry tree) has the potent antibacterial activity against Streptococcus mutans. Its active component was identified to be sanggenon C. The active component had stronger anti-bacterial activity than berberine, having minimum inhibitory concentration(MIC) of $25\;{\mu}g/ml$. Moreover, the inhibitory effect of this component on the cellular adherence of Streptococcus mutans to glass surfaces also was more remarkable than that of berberine in the presence of glucosyltransferase(GTase) and sucrose in vitro. These results indicate that sanggenon C may play an important role in inhibiting plaque formation and caries incidence.

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The Anti-Sticking Effect of Mixture of Trisodium Phosphate and Citric Acid on Oral Streptococcus species (구강 내 사슬알균 종들에 대한 제3인산나트륨과 구연산의 탈부착 효과)

  • Jung, Choong-Hyun;Cho, Hyung-Hun;Choi, Gwang-Ju;Kang, Seung-Yong;Yang, Nam-Woong
    • Korean Journal of Microbiology
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    • v.44 no.4
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    • pp.289-292
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    • 2008
  • Trisodium phosphate 12 hydrate and citric acid monohydrate mixture showed the strong anti-sticking effect on Streptococcus mutans, Streptococcus mitis, and Streptococcus salivarius, which are adhered to glass beads. Each Streptococcus species was shaking-cultured in brain heart infusion broth containing three glass beads. After 18 hr, glass beads were slightly washed into normal saline by three-pin-pointed pincette. Each three glass-beads set was put into reagent -containing tubes, which have 40 mg of bits of weighing paper for gaining brushing effect as similar as brushing one's teeth. The tubes were shaken by vortex mixer for 10 min except non-oral microbe, Streptococcus agalactiae (5 min). The samples were colony-counted by serial agar dilution method. Experiment was repeated three times for each Streptococcus species. The relative ratios of bacterial de-adherence by reagents were calculated in comparison with normal saline control. The de-adherence degree of citric acid-trisodium phosphate-saline mixture (CTS, pH 6.0) against Streptococcus mutans came to an average of 12.5 times compared with normal saline control. Trisodium-saline (TS, pH 8.4) showed the average of 7.5 times, and citric acid-saline (CS, pH 4.6) showed 6.0 times compared to the control group. The bacterial de-adherence degree against Streptococcus salivarius was each 7.2,2.6 and 2.8 times in above reagent sequence in comparison with saline control. CTS and TS showed 2.4 and 3.4 times of anti-sticking effect on Streptococcus mitis respectively, but CS had no anti-sticking effect on this bacterium. CTS, TS and CS showed 0.7, 0.6, and 0.6 times on non-oral microbe, Streptococcus agalactiae, separately compared with saline control. These results show that oral Streptococcus mutans, Streptococcus salivarius, and Streptococcus mitis, which are causative of dental caries or subacute endocarditis, may be easily removed from oral cavity by CTS mixture. It is conceivable that our experimental results will enable the development of a new conceptive toothpaste to prevent dental caries or subacute endocarditis after drawing teeth.

Inhibitory effect of n-hexane extract from Korean red ginseng marc against Streptococcus mutans causing dental caries (홍삼박 n-hexane 추출물의 충치를 유발하는 Streptococcus mutans 저해 효과)

  • Kim, Dong Chung;In, Man-Jin
    • Journal of Applied Biological Chemistry
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    • v.64 no.4
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    • pp.357-362
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    • 2021
  • In this study, to investigate the anticariogenic effect of red ginseng, the antibacterial effect, cell adherence and biofilm formation inhibitory effect of n-hexane extract of red ginseng marc (HERGM) against Streptococcus mutans, the causative bacteria of caries, were measured. The growth of S. mutans was inhibited in proportion to the concentration of HERGM, and was hardly observed at a concentration above 125 ㎍/mL (MIC =125 ㎍/mL). It was found that HERGM acts on the cell membrane and the nucleic acid component of the cell was leaked. In addition, HERGM inhibited the adherence and biofilm formation of S. mutans by more than 90% at a concentration of 125 ㎍/mL. GTase activity was completely inhibited at a concentration of 50 ㎍/mL of HERGM. In conclusion, it was found that HERGM commonly inhibited the growth and biofilm formation of S. mutans.

Effects of Antibacteria and Adhesive Inhibition of Scutellaria baicalensis Extract on Streptococcus mutans (황금(Scutellaria baicalensis) 추출물에 의한 Streptococcus mutans의 항균 및 부착억제 효과)

  • Paek, Jong-Yoon;Kim, Young-Hyun;Kwon, Hyun-Jeoung;Kim, Eun-Nim;Kim, Wan-Jong;Han, Man-Deuk
    • Journal of dental hygiene science
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    • v.8 no.4
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    • pp.367-373
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    • 2008
  • The natural products are used to be development of new antibacterial substances against human pathogenic bacteria. Adherence to the tooth surface by S. mutans is an important step in initiation of dental caries. This study was to examine antibacterial activity and anti-adhesive effect of Scutellaria baicalensis extract against S. mutans. Extracts of S. baicalensis were tested for antimicrobial activities by paper disc methods and radial diffusion assay methods, and bacterial adherence assay using 3 type of hydroxyapatite. The antibacterial level of ethyl acetate extract, IPK-3 on the growth of S. mutans was 125 mg/ml of minimum inhibitory concentration (MIC). The maximum growth of S. mutans in medium added with IPK-3 extract (50 mg/ml) was delayed to 30 hr, while the highest at 24 hr in control medium. The pH values of the control medium was 5.63 at 18 hr, but the media supplemented with IPK-3 extract was pH 6.50 at 12 hr. In adhesive inhibition assay, S. mutans was labelled with the fluorescent indicator DAPI and measured with fluorescence microscope. Adhesion of S. mutans on hydroxyapatite beads was inhibited by IPK-3 extracts. These results suggest that S. baicalensis extract can be used as an effective material for antibacterial activity and adhesive inhibition against S. mutans.

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Changes in the amount of adhesion of Streptococcus mutans to pit and fissure sealant incorporating cerium oxide nano particles(CNPs) (세륨옥사이드나노입자(Cerium oxide nano particles: CNPs)를 함유한 치면열구전색재의 Streptococcus mutans 부착량 변화)

  • Lee, Seong-Sook;Park, Young-Min;Kim, Dong-Ae
    • Journal of Korean society of Dental Hygiene
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    • v.20 no.4
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    • pp.535-543
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    • 2020
  • Objectives: The aim of this study was to investigated the surface roughness and change in the amount of adhesion of Streptococcus mutans to the commercial pit and fissure sealant containing cerium oxide nano particles(CNPs). Methods: The CNPs was incorporated into a commercial pit and fissure sealant at 0-4.0 wt%. Disk Specimens (ϕ 10 mm × 2 mm) were prepared by light polymerization the front and back for 40s. Average surface roughness was measured and Streptococcus mutans adhesion was observed under confocal laser scanning microscopy (CLSM) after 24 hour. Data were statistically analyzed by one-way ANOVA and Tukey HSDa post-hoc test. Results: Difference of the surface roughness(Ra) between groups was not statistically significant in both non CNPs group and CNPs group(p>0.05). In CNPs group, the amount of S. mutans adhesion was significantly different between control group and decreased in order of CNPs 4.0, CNPs 0.5, CNPs 1.0 and CNPs 2.0(p<0.05). Conclusions: Within the limitation of this study, these aspects of oral bacteria performances suggest potential usefulness of the CNPs incorporation, especially CNPs 1% and 2%, in pit and fissure sealant for inducing antibacterial effect.

Antimicrobial Activities and Adherence Inhibition on Streptococcus mutans by Ethyl Acetate Extract from Caesalpinia sappan L. (소목(Caesalpinia sappan L.)의 에틸아세테이트 분획물이 Streptococcus mutans에 대한 항균활성 및 부착 억제)

  • Kwon, Hyun-Jung;Kim, Yong-Hyun;Han, Kook-Il;Jeon, Mi-Ae;Han, Man-Deuk
    • Journal of dental hygiene science
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    • v.12 no.2
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    • pp.155-162
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    • 2012
  • Somok, the heart wood of Caesalpinia sappan is used in traditional Chinese medicine. Adherence of S. mutans to the tooth surface can result in the formation of a dental plaque. This study was performed to investigate the antibacterial activity and bacterial adhesion of ethyl acetate extract from C. sappan against S. mutans ATCC 25175. The bacteria were cultured in brain heart infusion(BHI) broth, and then incubated under 5% $CO_2$ at $37^{\circ}C$ for 18~24 hours. The antimicrobial activity of the ethyl acetate extract of C. sappan was then examined using the paper disc methods and MIC. In addition, bacterial adherence to hydroxyapatite was also examined. The ethyl acetate extract was shown to produce inhibitory effects and had MIC values of 125 mg/ml against S. mutans ATCC 25175. The ethyl acetate extract inhibited adhesion of S. mutans to saliva coated-hydroxyapatite beads(S-HA). At 24 hr, the ethyl acetate extract significantly reduced the adherence of S. mutans to S-HA beads relative to the control. The isolated active substance was identified as brazilin($C_{16}H_{14}O_5$) by $^1H-NMR$ and $^{13}C-NMR$. Thus, the application of C. sappan can be considered a useful and practical method for the prevention of dental caries.