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"Latar Belakang: Terdapat berbagai spesies bakteri yang berkoloni di dalam rongga mulut antara lain S.mutans merupakan bakteri penyebab utama karies gigi dan begitu pula C.albicans. Perkembangan kedua mikroorganisme ini saling berinteraksi berperan pada pembentukan karies gigi dan memiliki hubungan sinergisme. Terdapat S.sanguinis dapat pembentukan plak gigi mengakibatkan karies dan gingivitis. S.sanguinis memiliki efek antagonis terhadap S.mutans. Adapun hubungan S.sanguinis meningkatkan biomassa dan aktivitas metabolik pada biofilm C.albicans. Belum ada penelitian yang membuktikan apakah S.sanguinis dapat memberikan efek antagonis (menghambat) yang sama terhadap interaksi S.mutans dan C.albicans yang memiliki hubungan sinergistik. Dapat digunakan cell free-spent medium yang merupakan medium sisa hasil kultur bakteri yang telah disentrifugasi dan filter sehingga hanya tersisa produk ekskresi S.sanguinis sebagai intervensi untuk melihat pengaruh konsentrasi protein Streptococcus sanguinis terhadap dual-spesiesS.mutans dan C.albicans. Tujuan: Mengetahui efek cell-free spent media S.sanguinis terhadap interaksi mixed species biofilm C.albicans dan S.mutans.Metode Digunakan uji Bradford untuk menetapkan total konsentrasi protein, uji Crystal Violet untuk menetapkan pembentukan massa biofilm, dan uji Total Plate Count untuk menetapkan viabilitas spesies. Masing-masing perlakuan dibedakan berdasarkan konsentrasi spent medium 100%, 10%, dan 1%, serta waktu inkubasi 3 jam, 24 jam, dan 48 jam. Hasil: Analisis dari uji statistik terdapat perbedaan bermakna pada pembentukan massa biofilm dual-spesies S. mutans dan C.albicans berdasarkan konsentrasi protein dan waktu inkubasinya.Serta tidak terdapat perbedaan bermakna pada viabilitas biofilm S.mutans dan C.albicans berdasarkan konsentrasi protein dan waktu. Kesimpulan: Konsentrasi protein dan waktu inkubasi dapat mempengaruhi pembentukan massa biofilm pada dual-spesies S.mutans dan C.albicans, yang didukung secara statistik karena terdapat perbedaan bermakna. Sedangkan pada uji viabilitas biofilm, baik berdasarkan konsentrasi protein maupun waktu inkubasi dapat mempengaruhi viabilitas biofilm S.mutans dan C.albicans, namun tidak didukung secara statistik karena tidak terdapat perbedaan bermakna. Terdapat efek cell-free spent media S.sanguinis yaitu menghambat pembentukan massa biofilm pada kombinasi biofilm S.mutans dan C.albicans.

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Background: There are various species of bacteria that colonize in the oral cavity, including S.mutans is the main bacteria causing dental caries and C.albicans. The development of these two interacting microorganisms plays a role in the formation of dental caries and has a synergistic relationship. There is S.sanguinis bacteria forming dental plaque resulting in caries and gingivitis. S.sanguinis has an antagonistic effect against S.mutans. The relationship between S.sanguinis increased biomass and metabolic activity in C.albicans biofilms. There has been no research that proves whether S.sanguinis can provide the same antagonistic effect on the interaction of S.mutans and C.albicans which has a synergistic relationship. Cell free-spent medium can be used which is the remaining medium from filtered bacterial culture so that only S.sanguinis excretion products remain as an intervention to see the effect of protein concentration. S.sanguinis against dual-species S.mutans and C.albicans

Objective: To determine the effect of cell-free spent media S.sanguinis on the interaction of mixed species biofilm C.albicans and S.mutans.

Methods: The Bradford test was used to determine the total protein concentration, the Crystal Violet test to determine the mass formation of the biofilm, and the Total Plate Count test to determine the viability of the species. Each treatment was differentiated based on protein concentration spent medium 100%, 10%, and 1%, as well as incubation time of 3 hours, 24 hours, and 48 hours.

Results: From analysis statistic test there was a significant difference in the mass formation of dual-species S.mutans and C.albicans biofilms based on protein concentration and incubation time. And there was no significant difference in the viability of S.mutans and C.albicans biofilms based on protein concentration and incubation time.

Conclusion: Protein concentration and incubation time can affect the formation of biofilm mass in dual-species S.mutans and C.albicans, which is supported statistically because there is a significant difference. Meanwhile, the biofilm viability test, both based on protein concentration and incubation time, could affect the biofilm viability of S.mutans and C.albicans, but it was not statistically supported because there was no significant difference. There is an effect of cell-free spent media S.sanguinis which inhibits the formation of biofilm mass in the combination of S.mutans and C.albicans biofilms."

"Latar Belakang: Hubungan sinergistik antara bakteri etiologi karies Streptococcus mutans dan jamur patogen Candida albicans merupakan salah satu faktor yang berperan dalam memperparah penyakit karies. Selain itu, bakteri komensal Streptococcus salivarius telah dilaporkan dapat mempengaruhi pembentukan biofilm Streptococcus mutans dan Candida albicans ketika dikultur bersama-sama. Streptococcus salivarius telah diobservasi mampu menganggu sistem quorum sensing dari Streptococcus mutans dan mencegah perubahan morfologi Candida albicans dari ragi menjadi hifa. Tujuan: Menganalisis pengaruh keberadaan whole protein Streptococcus salivarius terhadap pertumbuhan biofilm Streptococcus mutans dan Candida albicans dalam berbagai konsentrasi dan waktu. Metode: Dilakukan uji pembentukan biofilm Streptococcus mutans ATCC 25175 dan Candida albicans ATCC 10231 yang dipaparkan whole protein hasil metabolit Streptococcus salivarius ATCC 9222 dalam konsentrasi yang bervariasi (1%, 10%, 100%). Kemudian biofilm diinkubasi dengan durasi 3 jam, 24 jam, dan 48 jam untuk melihat efek keberadaan protein terhadap fase pembentukkan biofilm. Uji massa biofilm dilakukan dengan menggunakan crystal violet assay. Pengamatan dengan mikroskop cahaya dilakukan untuk mengobservasi morfologi biofilm. Perbandingan jumlah sel viabel Streptococcus mutans dan Candida albicans diuji dengan metode total plate count.Kesimpulan: Terdapat indikasi jika whole protein hasil metabolit Streptococcus salivarius menghambat pertumbuhan biofilm Streptococcus mutans dan Candida albicans bergantung pada konsentrasi protein dan waktu inkubasi biofilm.

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Background: Commensal bacteria Streptococcus salivarius has been reported to influence Streptococcus mutans or Candida albicans when cultured together.

Objective: To analyze the effect of the presence of Streptococcus salivarius whole protein on the growth of Streptococcus mutans and Candida albicans dual-species biofilms in various concentrations and at various times representing the stage of biofilm formation.

Method: Biofilm formation assay was conducted for biofilm consisting of Streptococcus mutans ATCC 25175 and Candida albicans ATCC 10231. The exposure to whole protein from the metabolite of Streptococcus salivarius ATCC 9222 was done by infusing the spent medium in varying protein concentrations. Then the biofilm was incubated with varying duration to see the effect of the protein on different phase of biofilm formation. Biofilm mass measurement was carried out using crystal violet assay. Microscope observations were done to observe the morphology of the biofilm. Comparison of the number of viable cells between Streptococcus mutans and Candida albicans was done with total plate count method.

Conclusion: There is an indication that the whole protein metabolite of Streptococcus salivarius inhibits the growth of Streptococcus mutans and Candida albicans dual species biofilms depending on protein concentration and biofilm phase."

"Latar Belakang: Streptococcus mutans dan Candida albicans merupakan dua mikroba rongga mulut yang mengalami koagregasi dan membuat biofilm dual-spesies, menjadi suatu mekanisme untuk membantu keselamatan mereka. Actinomyces naeslundii juga dapat dijumpai dalam lingkungan oral dan telah dibuktikan dapat menjadi inhibitor biofilm tersebut. Spent medium mengandung metabolit sel, sehingga filtrasi medium tersebut dapat menuju pada perolehan protein tanpa adanya sel mikroba.Tujuan: Mengevaluasi efek protein yang disekresikan Actinomyces naeslundii terhadap biofilm koagregasi Streptococcus mutans dan Candida albicans. Metode: Analisa kualitatif dengan observasi inverted microscope dan observasi koloni mikroba dalam agar BHI, serta SDA. Analisa kuantitatif melalui uji statistik dan observasi data uji biomassa dengan Crystal Violet Assay dan viabilitas dengan Total Plate Count, yang dilakukan dalam agar BHI dan SDA. Eksperimen dilakukan dengan variabel independen waktu inkubasi 3 jam (fase inisial), 24 jam (fase pre-maturasi), dan 48 jam (fase maturasi), serta konsentrasi protein 1%, 10%, dan 100%. Hasil: Perbedaan bermakna secara statistik hanya ditemukan pada komparasi biomassa berdasarkan waktu inkubasi 3 jam-48 jam pada konsentrasi protein 1% dan 3 jam-48 jam, serta 34 jam-48 jam dengan konsentrasi protein 10%. Tidak ada perbedaan bermakna secara statistik pada biomassa berdasarkan konsentrasi protein, maupun viabilitas berdasarkan waktu inkubasi atau konsentrasi protein. Kesimpulan: Protein Actinomyces naeslundii dapat reduksi biomassa biofilm koagregasi Streptococcus mutans dan Candida Albicans pada fase inisial pembentukan biofilm, tanpa reduksi jumlah koloni mikroba. Diasumsikan terjadi reduksi komponen matriks EPS, tanpa reduksi sel mikroba.

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Background: Streptococcus mutans and Candida albicans are oral microbes that can coaggregate into a dual-species biofilm, creating a mechanism to help their survival. Actinomyces naeslundii can also be discovered in the oral microflora, and proven to act as an inhibitor towards said biofilm. Spent medium contains cell metabolites, so that if filtered, said medium can lead to protein acquisition without the presence of microbes.

Purpose: To examine the effect of proteins secreted from Actinomyces naeslundii towards the coaggregated biofilm of Streptococcus mutans and Candida albicans.

Methods: Qualitative analysis through inverted microscope and direct observation of microbial colonies on BHI and SDA agar mediums. Quantitative analysis was done statistically and by observing data discovered from biomass evaluation with Crystal Violet assay and viability testing with Total Plate Count on BHI and SDA agar. The experiment was carried out with the independent variables being the incubation period of 3 hours (initial phase), 24 hours (pre-maturation phase), and 48 hours (maturation phase), along with protein concentrations of 1%, 10%, and 100%.

Results: Statistically significant difference during biomass comparison of 3 and 48 hours with 1% protein concentration, as well as 3 and 48 hours, 24 and 48 hours with 10% protein concentration. No other statistical differences were found.

Conclusion: Actinomyces naeslundii protein can reduce the biomass of coaggregated Streptococcus mutans and Candida albicans biofilm during the initial stage of biofilm formation, without reducing microbial colonies. It is assumed that there is reduction in EPS matrix components, without microbial cell reduction."

"Latar Belakang: Silver Diamine Fluoride SDF merupakan agen antibakteri yang mempunyai efek samping yaitu timbulnya noda kehitaman pada permukaan gigi. Propolis Fluoride PPF dikenal sebagai agen antibakteri yang dapat menggantikan SDF tanpa memiliki efek samping yang sama. Tujuan: Menganalisis pengaruh PPF dalam menghambat pembentukan biofilm S. mutans dan S. gordonii serta dibandingkan dengan SDF, dengan menggunakan uji MTT. Metode: Suspensi bakteri S. mutans dan S. gordonii dalam media BHI yang diperkaya sukrosa 0,2 dipaparkan PPF. Kemudian diinkubasi pada 4 waktu berbeda yaitu selama 4 jam, 12 jam, 24 jam, dan 48 jam. Presentase inhibisi dianalisis menggunakan Uji MTT. Hasil: Tidak ada perbedaan bermakna p>0,05 antara inhibisi S. mutans dan S. gordonii dalam berbagai waktu. Kesimpulan: PPF memiliki potensi yang sama dengan SDF dalam menghambat pembentukan biofilm S. mutans dan S. gordonii.

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Background: Silver Diamine Fluoride SDF is an antibacterial agent that has a side effect like black stain appearance on the surface of the teeth. Propolis Fluoride PPF is an antibacterial agent which can replace SDF without having the same side effect.

Purpose: To analyze the effect of PPF in inhibiting biofilm formation of S. mutans dan S. gordonii in comprasion to SDF, by using MTT assay.

Methods: Bacterial suspension of S. mutans and S. gordonii was put inside the BHI medium that enriched with 0,2 sucrose and exposed to PPF, then incubated at 4 different times for 4 hours, 12 hours, 24 hours, and 48 hours. The percentage of inhibition was tested with MTT assay.

Result: There was no significant difference p 0,05 between inhibition of S. mutans and S. gordonii in various time.

Conclusion: PPF has the same potention as SDF in inhibiting biofilm formation of S. mutans and S. gordonii."

"Latar belakang: Saliva manusia terdiri atas berbagai komponen protein yang dapat bersifat mendukung dan menghambat keberadaan flora oral. Latihan fisik berperan sebagai aktivator sistem saraf simpatetik, yang mempengaruhi sekresi saliva yang kaya akan protein, salah satunya Streptococcus mutans-binding salivary protein. Adanya interaksi antara protein saliva dengan bakteri oral akan mempengaruhi pembentukan dan pemeliharaan biofilm oral, yang merupakan faktor virulensi utama pada rongga mulut. Tujuan: Menganalisis efek S. mutans-binding salivary protein dari subjek pelari dan nonpelari terhadap pembentukan biofilm S. gordonii pada fase perlekatan dan fase maturasi secara in vitro. Metode: Prosedur binding protein saliva total dengan S. mutans ATCC 25175 menggunakan binding buffer, elusi protein binding menggunakan elute buffer, dan uji pembentukan biofilm S. gordonii ATCC 10558T dengan prosedur pewarnaan crystal violet pada inkubasi 3 jam dan 24 jam. Hasil: S. mutans-binding salivary protein dari subjek pelari dan nonpelari tidak memiliki perbedaan bermakna dibanding kontrol baik pada fase perlekatan maupun fase maturasi p>0,05. Peningkatan konsentrasi protein pelari pada fase perlekatan diikuti dengan penurunan massa biofilm uji yang terbentuk r=-0,919, sedangkan pada kelompok nonpelari peningkatan konsentrasi protein pada fase maturasi diikuti dengan peningkatan massa biofilm yang terbentuk r=0,87. Kesimpulan: S. mutans-binding salivary protein dari kelompok pelari memiliki efek menghambat pembentukan biofilm S. gordonii pada fase perlekatan dan dalam konsentrasi tinggi, sedangkan pada kelompok nonpelari peningkatan konsentrasi protein efektif dalam memfasilitasi pembentukan biofilm uji pada fase maturasi.

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Background: Human salivary consists of various protein components that can be supportive or inhibit the presence of oral micloflora. Physical exercise acts as a strong activator for symphatetic nervous system, which increased protein rich salivary secretion, one of them is S. mutans binding salivary protein. The interaction between salivary proteins with oral bacteria will affect the formation and maintainance of oral biofilms, which is the major virulence factor in the oral cavity.

Objective: The aim of this study was to analyze the effect of S. mutans binding salivary protein isolated from runners and non runners to biofilm formation of S. gordonii in the adhesion and maturation phase.

Methods: Total salivary protein was bind with S. mutans ATCC 25175 using binding buffer, elution of binding proteins using elute buffer, and biofilm formation assay of S. gordonii ATCC 10558T using crystal violet staining procedure at 3 hours and 24 hours incubation.

Result: There was no significant difference between S. mutans binding salivary protein from runners and non runners against control in adhesion and maturatuion phase p 0.05. The increase of protein concentration in runners group followed by the decrease of biofilm formation in adhesion phase r 0.919, whereas the increase of salivary protein concentration in non runners group was followed by increasing of biofilm formation in maturation phase r 0.87.

Conclusion: S. mutans binding salivary protein from runners group have an effect in inhibiting S. gordonii biofilm formation at adherence phase and in high concentrations, whereas in non runners group increased protein concentrations were effective in facilitating S. gordonii biofilm formation at maturation phase."

"Latar belakang: ECC menjadi masalah serius di Indonesia dan Dunia. Terdapat 3komponen ECC, yaitu gigi, mikroba, serta lingkungan rongga mulut yang dalam hal iniyaitu protein saliva. Penyebab dari ECC sendiri yaitu bakteri Streptococcus mutans.Tidak hanya itu, Candida albicans sering dihubungkan dengan Streptococcus mutanspada plak ECC. Namun, adanya riset di mana Candida albicans cenderung mengurangisifat kariogenik Streptococcus mutans menarik untuk diteliti. Tujuan: menganalisisperan protein saliva ECC terhadap pertumbuhan biofilm Streptococcus mutans danStreptococcus mutans dan Candida albicans (atau dual-spesies) di rongga mulut.Metode: Setiap sampel dilakukan uji SDS-Page untuk melihat apakah terdapatperbedaan profil protein antar setiap sampel. Lalu, sampel dilakukan pengenceranmenjadi 3 konsentrasi, kemudian diinkubasi bersama dengan Streptococcus mutansserta dual-spesies di dalam 96-well plate selama 24 jam dan 48 jam secara anaerob.Lalu, masing-masing biofilm dilakukan uji Crystal Violet Staining (untuk mendapatkannilai Optical density) serta Total Plate Count. Hasil: Tidak terdapat perbedaan profilprotein antara saliva ECC dengan laju alir saliva <30 detik, 30-60 detik, 30-60 detikbebas ECC. Pada variabel konsentrasi protein, terdapat perbedaan dan kenaikan nilairerata pada nilai Optical density biofilm pada Streptococcus mutans dan dual-spesies.Tidak terdapat perbedaan secara statistik antara konsentrasi protein saliva denganviabilitas mikroba pada biofilm Streptococcus mutans dan dual-spesies meski nilairerata menunjukkan penurunan viabilitas mikroba. Pada biofilm Streptococcus mutansdan dual-spesies, tidak terdapat perbedaan bermakna pada hasil uji Optical density danviabilitas mikroba berdasarkan variabel waktu inkubasi biofilm. Meski nilai reratamenunjukkan adanya penurunan pada Optical density Streptococcus mutans, kenaikanpada viabilitas mikroba Streptococcus mutans, dan kenaikan pada Optical densitysekaligus viabilitas mikroba dual-spesies, namun tidak memengaruhi nilaikomparasinya. Kesimpulan: Protein saliva dapat memengaruhi pembentukan biofilmbaik Streptococcus mutans maupun kombinasi dual-spesies Streptococcus mutansdengan Candida albicans. Waktu inkubasi biofilm tidak dapat memengaruhipembentukan biofilm Streptococcus mutans maupun kombinasi dual-spesiesStreptococcus mutans dengan Candida albicans

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Background: ECC is a serious problem in Indonesia and the world. There are 3components of ECC, namely teeth, microbes, and the oral environment, in this casesalivary protein. The cause of ECC itself is Streptococcus mutans. Not only that,Candida albicans is often associated with Streptococcus mutans in ECC plaques.However, the research in which Candida albicans tends to reduce the cariogenicproperties of Streptococcus mutans is interesting. Purpose: to analyze the role of theECC salivary protein on the growth of Streptococcus mutans and combination ofStreptococcus mutans and Candida albicans (or dual-species) biofilms in the oral cavity.Methods: Each sample was subjected to an SDS-Page test to see if there weredifferences in protein profiles between each sample. Then, the sample was diluted into 3concentrations, then incubated together with Streptococcus mutans and dual-species in96-well plates for 24 hours and 48 hours anaerobically. Then, each biofilm wassubjected to a Crystal Violet Staining test (to obtain Optical density value) and TotalPlate Count. Results: There was no difference in protein profile between salivary ECCwith salivary flow rates <30 seconds, 30-60 seconds, ECC-free 30-60 seconds. In theprotein concentration variable, there were differences and an increase in trend lines inthe Optical density value of biofilms in Streptococcus mutans and dual-species. Therewas no statistical difference between salivary protein concentrations and microbialviability in Streptococcus mutans and dual-species biofilms, although the trend lineshowed a decrease in microbial viability. In Streptococcus mutans and dual-speciesbiofilms, there were no significant differences in the Optical density test results andmicrobial viability based on the biofilm incubation time variables. Although the trendline showed a decrease in Optical density Streptococcus mutans, an increase inmicrobial viability of Streptococcus mutans, and an increase in Optical density as wellas dual-species microbial viability, it did not affect the comparative value. Conclusion:Salivary protein can influence biofilm formation for both Streptococcus mutans and thedual-species combination of Streptococcus mutans and Candida albicans. Biofilmincubation time could not affect the biofilm formation of both Streptococcus mutansand the dual-species combination of Streptococcus mutans and Candida albicans"

"Latar Belakang: Perkembangan karies gigi berkaitan dengan bakteri Streptococcus mutans atau Streptococcus gordonii. Propolis dilaporkan sebagai agen antibakteri karena mengandung flavonoid berupa apigenin dan tt-farnesol yang dapat menghambat aktivitas enzim glukosiltransferase dan mempengaruhi integritas membran bakteri. Tujuan: Menganalisis potensi hambat pasta gigi mengandung ekstrak propolis UI terhadap pembentukan biofilm Streptococcus mutans atau Streptococcus gordonii. Metode: Biofilm Streptococcus mutans atau Streptococcus gordonii yang telah dipaparkan pasta gigi ekstrak propolis UI dengan  konsentrasi 25mg/10ml, 50mg/10ml, dan 100mg/10ml kemudian diinkubasi selama 4 jam (fase adhesi), 12 jam (fase akumulasi aktif) dan 24 jam (fase maturasi) pada suhu 37ºC. Persentase inhibisi dinilai dengan menggunakan MTT assay. Hasil: Persentase potensi hambat biofilm Streptococcus mutans tertinggi setelah inkubasi 12 jam dan Streptococcus gordonii setelah inkubasi 4 jam dengan konsentrasi 100mg/10 ml.  Kesimpulan: Efek paparan pasta gigi mengandung ekstrak propolis UI dalam menghambat pembentukan biofilm Streptococcus mutans atau Streptococcus gordonii dipengaruhi oleh konsentrasi dan durasi paparan pasta gigi UI.

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Background: The development of dental caries has been found to be associated with Streptococcus mutans and Streptococcus gordonii. Propolis has been reported as a potent antimicrobial material because containing flavonoids such as apigenin and tt-farnesol that inhibit glucosyltransferase enzyme activity and membrane integrity.

Objective: To analyze the effect of toothpaste containing propolis wax UI in inhibit Streptococcus mutans or Streptococcus gordonii biofilm formation.

Methods: Streptococcus mutans and Streptococcus gordonii biofilm that has been exposed by propolis UI toothpaste at concentration 25mg/10ml, 50mg/10ml, dan 100mg/10ml was incubated for 4 hours (adherence phase), 12 hours (active accumulation phase) and 24 hours (maturation phase) at 37ºC. The percentage of inhibition was tested with MTT assay.

Result: Inhibition percentage of Streptococcus mutans the highest is on active accumulation phase and Streptococcus gordonii biofilm is on adherence phase at concentraton 100mg/10ml.

Conclusion: Propolis UI toothpaste effect on inhibiting biofilm formation of Streptococcus mutans or Streptococcus gordonii depend on concentration and duration of time."

"Olahraga merupakan aktivator stimulus simpatis yang dapat mempengaruhi sekresi saliva sehingga menyebabkan peningkatan viskositas dan konsentrasi protein saliva, salah satunya Streptococcus mutans-binding salivary protein. Tujuan: Menganalisis pengaruh S. mutans-binding salivary protein yang diisolasi dari subjek pelari dan nonpelari terhadap pertumbuhan biofilm Streptococcus gordonii. Metode: Pemilihan subjek pelari dan nonpelari ditetapkan berdasarkan metode subjektif melalui riwayat lari dan metode objektif melalui pengukuran VO2max. S. mutans-binding salivary protein didapatkan melalui interaksi protein saliva pelari dan nonpelari dengan bakteri S. mutans. Uji pertumbuhan biofilm bakteri S. gordonii ATCC 10558T dilakukan dengan pewarnaan crystal violet. Data yang didapat kemudian dianalisis dengan uji statistik menggunakan uji One-way ANOVA. Hasil: Pertumbuhan biofilm S. gordonii pada S. mutans-binding salivary protein pelari meningkat tetapi tidak signifikan p>0.05 baik pada waktu 3 jam maupun 24 jam. Pertumbuhan biofilm S. gordonii pada S. mutans-binding salivary protein nonpelari tidak signifikan p>0.05 pada waktu 3 jam kemudian meningkat signifikan p 0.05 pada waktu 24 jam. Kesimpulan: S. mutans-binding salivary protein dari subjek pelari tidak memiliki pengaruh dalam menghambat pertumbuhan biofilm S. gordonii, sedangkan protein saliva dari subjek nonpelari efektif memfasilitasi pada fase maturasi.

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Physical exercise is a strong activator of sympathetic stimuli which may affect salivary secretion by increasing viscosity and concentration of salivary protein, including Streptococcus mutans binding salivary protein. Salivary protein may act as antimicrobial agent or may facilitate the growth of biofilm.

Objective: to analyze the impact of S. mutans binding salivary protein from runners and from non runners to biofilm growth of S. gordonii.

Methods: Runners and non runners were selected based on running history and VO2max test. S. mutans binding salivary protein was obtained through the interaction of runners and non runners salivary protein with S. mutans. Biofilm growth assay of S. gordonii ATCC 10558T was conducted using crystal violet staining. The data obtained was statistically tested using One way ANOVA test.

Results: Biofilm growth of S. gordonii in runners group is insignificantly increased p 0.05 either in three hour or twenty four hour incubation. Meanwhile, biofilm growth of S. gordonii in non runners group is significantly increased after twenty four hour incubation p 0.05 .

Conclusion: S. mutans binding salivary protein from runners has no inhibition effect on biofilm growth of S. gordonii, while that from non runners facilitates biofilm growth of S. gordonii at maturation phase. "

"Latar belakang: Kadar Bunuh Minimal (KBM) ekstrak etanol temulawak (Curcuma xanthorriza Roxb.) terhadap Streptococcus mutans 25% dan 15% terhadap Streptococcus sanguinis single species (in vitro). Streptococcus mutans dan Streptococcus sanguinis saling berkompetisi untuk memperoleh nutrisi. Tujuan: Menganalisis efek antibakteri ekstrak etanol temulawak terhadap dual species Streptococcus in vitro. Metode: Uji antibakteri dengan metode perhitungan koloni dan kuantifikasi dengan Real-time PCR. Analisis data menggunakan Kruskal Wallis, Mann-Whitney dan Unpaired T-test. Hasil: KHM ekstrak etanol temulawak terhadap dual species Streptococcus 0,2% dan KBM 10%. Di dalam biofilm dual species Streptococcus, proporsi S.mutans lebih tinggi daripada S. sanguinis (p<0.05). Simpulan: Konsentrasi efektif ekstrak etanol temulawak sebagai antibakteri terhadap S.mutans dan S.sanguinis dalam dual species lebih rendah dari pada terhadap kedua bakteri tersebut sebagai single species. Di dalam biofilm dual species, S. sanguinis lebih sensitif terhadap ekstrak temulawak daripada S.mutans.

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Background: Minimal Bactericidal Concentration (MBC) of Java turmeric (Curcuma xanthorriza Roxb.) ethanol extract against Streptococcus mutans is 25% and 15% against Streptococcus sanguinis. In dental biofilm S.mutans and S.sanguinis competes each other to obtain nutrients.

Objectives: Analize the antibacterial effect of Java tumeric ethanol extract (MIC and MBC) against dual species Streptococcus in vitro.

Methods: Antibacteria activity of the extract was analyzed by measuring the growth of the bacteria after being exposed to the extract by counting colony formation and by quantifying the existing bacterial cell number using real-time PCR. Statistic analysis using Kruskal Wallis, Mann Whitney test and Unpaired t-test.

Results: The MIC of the extract was 0,2% and the MBC was 10%. After exposure of the extract to the dual species biofilm, the growth of S.mutans was higher than S.sanguinis (p<0,05).

Conclutions: Java tumeric ethanol extract is more effective against S.mutans and S.sanguinis as dual species Streptococcus than as single species. S.sanguinis is more sensitive to Java tumeric ethanol extract than S. mutans."