scholarly journals The potency of Immunoglobulin Y anti Porphyromonas gingivalis to inhibit the adherence ability of Porphyromonas gingivalis on enterocytes

2020 ◽  
Vol 53 (1) ◽  
pp. 20
Author(s):  
Nova Andriani Hepitaria ◽  
Indeswati Diyatri ◽  
Markus Budi Rahardjo ◽  
Rini Devijanti Ridwan
Keyword(s):  
Porphyromonas Gingivalis ◽  
Chronic Periodontitis ◽  
Main Type ◽  
Bacterial Suspension ◽  
Control Group ◽  
Immunoglobulin Y ◽  
Index Value ◽  
Phosphate Buffered Saline ◽  
Number Of Bacteria ◽  
Adherence Index

Background: Pophyromonas gingivalis (P. gingivalis) bacteria are the main type of bacterium that cause chronic periodontitis. Immunoglobulin Y (IgY) is a type of immunoglobulin found in poultry, such as chickens and birds. IgY can be used as an alternative method of preventing the accumulation of plaque that causes chronic periodontitis. Purpose: To determine the ability of IgY anti P. gingivalis to inhibit adherence of P. gingivalis. Methods: The samples were divided into eight groups, each group containing 10 ml of IgY anti P. gingivalis and 50 ml of enterocyte cells. The control group contained 50 ml of IgY anti P. gingivalis, and 50 ml of enterocyte cells. Serial dilution was carried out to the first seven groups, with the first group containing 90 ml phosphate-buffered saline (PBS) and 10 ml IgY anti P. gingivalis, and the second to seventh groups containing 50 ml PBS before adding 50 ml of enterocyte cells and 50 ml of bacterial suspension per group. The number of bacteria was calculated as an adherence index value using a light microscope. Results: This study shows that IgY anti P. gingivalis significantly reduces the adherence index value of P. gingivalis. Conclusion: IgY anti P. gingivalis has potency to inhibit the adherence of P. gingivalis.

scholarly journals ANTIBACTERIAL EFFECTIVITY OF FLAVONOID FRACTION OF RAMANIA LEAF EXTRACT (Bouea macrophylla Griffith) AGAINST Porphyromonas gingivalis

2021 ◽  
Vol 6 (1) ◽  
pp. 72
Author(s):  
Lailatul Qomariyah ◽  
Fransiska Uli Arta Panjaitan
Keyword(s):  
Periodontal Disease ◽  
Porphyromonas Gingivalis ◽  
Chronic Periodontitis ◽  
Leaf Extract ◽  
Antibacterial Properties ◽  
Chlorhexidine Gluconate ◽  
Control Group ◽  
Dilution Method ◽  
Control Group Design ◽  
Flavonoid Fraction

ABSTRACTBackground: Chronic periodontitis is a periodontal disease with 80% of all cases of periodontitis. The major causes are the accumulation of plaque and bacteria. The dominant bacteria in chronic periodontitis is Porphyromonas gingivalis. Treatment of chronic periodontitis can be done by scaling and root planing and supporting therapy by using mouthwash such as Chlorhexidine gluconate 0.2% which is the gold standard in the treatment of periodontal disease. Chlorhexidine gluconate 0.2% has disadvantages so that nowadays research on herbal plants is being done to find alternative medicines that are more effective. Ramania (Bouea machropylla Griffith) leaf contains flavonoids that have antibacterial properties. Objective: To analyze the antibacterial effectivity of the flavonoid fraction of Ramania leaf extract against Porphyromonas gingivalis that causes chronic periodontitis. Method: True experimental study and post-test with control group design consisting of 5 treatment groups, namely flavonoid fraction of ramania leaf extract with concentrations of 0.1%, 0.3%, and 0.5%, chlorhexidine gluconate 0.2% as a control positive and aquadest as a negative control. Each group was repeated 6 times. Antibacterial tests using the dilution method with inhibitory rates calculated using a UV-Vis spectrophotometer and killing rates were calculated using a Colony Counter. Results: The average difference in absorbance values obtained inhibitory rates at concentrations of 0.1%, 0.3%, and 0.5%. One Way Anova Test showed a significance value of 0,000 (p < 0.05). The average number of colonies after 24 hours incubation showed the results of a kill rates in the concentration group of 0.3%, 0.5%, and positive control. The Kruskal Wallis test showed a significance value of 0,000 (p < 0.05). Conclusion: The minimum inhibitory concentration (MIC) was obtained at a concentration of 0.1% and the minimum bactericidal concentration (MBC) was obtained at 0.3% concentration.Keywords: Flavonoid Fraction, MBC, MIC, Porphyromonas Gingivalis, Ramania Leaf Extract.

scholarly journals ANTIBACTERIAL EFFECTIVITY TEST OF ULIN BARK EXTRACT (Eusideroxylon zwageri) ON THE GROWTH OF Porphyromonas gingivalis

2021 ◽  
Vol 6 (1) ◽  
pp. 37
Author(s):  
Della Isnadya Noor ◽  
I Wayan Arya Krishnawan Firdaus ◽  
Beta Widya Oktiani
Keyword(s):  
Side Effects ◽  
Porphyromonas Gingivalis ◽  
Chronic Periodontitis ◽  
Bacterial Colonization ◽  
Bark Extract ◽  
Control Group ◽  
Dilution Method ◽  
Control Group Design ◽  
Significant Difference ◽  
Post Hoc

ABSTRACTBackground: Chronic periodontitis is an infectious disease caused by bacterial colonization of dental plaque. Bacteria that play a role in chronic periodontitis is Porphyromonas gingivalis. One of mouthwash that reduce the number of P.gingivalis colonies is chlorhexidine 0.2%. Long term use of chlorhexidine 0.2% can cause some side effects to the oral cavity, so we need an alternative mouthwash from natural ingredients that can reduce the side effects of chlorhexidine 0.2%. Ulin bark extract contains phenolic, flavonoid, tannin, alkaloid, terpenoid, and saponin which can be an alternative base for mouthwash besides chlorhexidine 0.2%. Purpose: It is to analyze antibacterial effectivity of ulin bark extract on the growth of Porphyromonas gingivalis. Methods: This study was using true experimental research and post-test only with control group design, that used 9 treatment groups with 4 replications, that were 5%, 10%, 20%, 40%, 60%, 80%, 100% concentrations, chlorhexidine 0.2%, and sterile aquadest against P. gingivalis. The total samples were as many as 36. Result: One Way ANOVA and Post-Hoc Games Howell tests showed that the average absorbance values has a significant difference, then Kruskall Wallis and Post Hoc Mann Whitney tests showed the number of colonies with significant differences. MIC in this study was at 5% concentration and MBC was at 20% concentration.. Conclusion: Ulin bark extract with 40% concentration has an absorbance value equivalent to 0.2% chlorhexidine and 20% concentration has a bactericidal effects equivalent to 0.2% chlorhexidine against the growth of P.gingivalis.Keywords:Antibacterial, Dilution method,Porphyromonas gingivalis, Ulin Bark Extract.

scholarly journals Uji Daya Hambat Ekstrak Daun Salam (Syzygium polyanthum wight) Terhadap Pertumbuhan Bakteri Porphyromonas Gingivalis Secara In Vitro

2021 ◽  
Vol 9 (1) ◽  
pp. 19-28
Author(s):  
Monalisa Monalisa ◽  
Erly Erly ◽  
Aria Fransiska
Keyword(s):  
Porphyromonas Gingivalis ◽  
Chronic Periodontitis ◽  
Leaf Extract ◽  
Bacterial Colonization ◽  
Inhibition Zone ◽  
Control Group ◽  
Significant Difference ◽  
One Way Anova ◽  
Paper Disc

Chronic periodontitis is the most common type of periodontitis. The main cause of chronic periodontitis is bacterial colonization of plaque. Porphyromonas gingivalis is the main pathogen and has the highest prevalence of chronic periodontitis. Bay leaf extract (Syzygium polyanthum wight) is believed to have the pharmacological effect that can be used as antibacterial. The purpose of this research was to determine the inhibitory of bay leaf extract on the growth of Porphyromonas gingivalis in vitro. The method of this research was experimental laboratories with posttest only control group design. There were 30 samples divided into 6 groups, namely bay leaf extract concentration of 2.5%, 5%, 10%, 20%, 40% and Dimethyl Sulfoxide (DMSO) as a control. Inhibitory test using the Kirby-Bauer method with a paper disc on Mueller Hinton medium agar. Inhibition zone that created around paper disc was measured with the sliding caliper. The results were analyzed with One Way Anova and Post Hoc LSD test. The results of this research showed that the mean of bay leaf extract 40% had the largest inhibition zone that was 7,6 mm and the lowest formed by bay leaf extract 2,5% that was 1,94 mm. One Way Anova test showed that there was a significant difference among the group (p<0,05). The conclusion of this research there was significant difference inhibition among 2,5%, 5%, 10%, 20%, and 40% concentration of bay leaf extract on the growth of Porphyromonas gingivalis in vitro. The higher concentration of bay leaf extract resulting the greater inhibition zone.

scholarly journals ANTIBACTERIAL EFFECTIVITY OF FLAVONOID FRACTION OF RAMANIA LEAF EXTRACT (Bouea macrophylla Griffith) AGAINST Porphyromonas gingivalis

2021 ◽  
Vol 6 (2) ◽  
pp. 147
Author(s):  
Lailatul Qomariyah ◽  
Fransiska Uli Arta Panjaitan ◽  
Rosihan Adhani
Keyword(s):  
Periodontal Disease ◽  
Porphyromonas Gingivalis ◽  
Chronic Periodontitis ◽  
Leaf Extract ◽  
Antibacterial Properties ◽  
Chlorhexidine Gluconate ◽  
Control Group ◽  
Dilution Method ◽  
Control Group Design ◽  
Flavonoid Fraction

Background: Chronic periodontitis is a periodontal disease with 80% of all cases of periodontitis. The major causes are the accumulation of plaque and bacteria. The dominant bacteria in chronic periodontitis is Porphyromonas gingivalis. Treatment of chronic periodontitis can be done by scaling and root planing and supporting therapy by using mouthwash such as Chlorhexidine gluconate 0.2% which is the gold standard in the treatment of periodontal disease. Chlorhexidine gluconate 0.2% has disadvantages so that nowadays research on herbal plants is being done to find alternative medicines that are more effective. Ramania (Bouea machropylla Griffith) leaf contains flavonoids that have antibacterial properties. Objective: To analyze the antibacterial effectivity of the flavonoid fraction of Ramania leaf extract against Porphyromonas gingivalis that causes chronic periodontitis. Method: True experimental study and post-test with control group design consisting of 5 treatment groups, namely flavonoid fraction of ramania leaf extract with concentrations of 0.1%, 0.3%, and 0.5%, chlorhexidine gluconate 0.2% as a control positive and aquadest as a negative control. Each group was repeated 6 times. Antibacterial tests using the dilution method with inhibitory rates calculated using a UV-Vis spectrophotometer and killing rates were calculated using a Colony Counter. Results: The average difference in absorbance values obtained inhibitory rates at concentrations of 0.1%, 0.3%, and 0.5%. One Way Anova Test showed a significance value of 0,000 (p < 0.05). The average number of colonies after 24 hours incubation showed the results of a kill rates in the concentration group of 0.3%, 0.5%, and positive control. The Kruskal Wallis test showed a significance value of 0,000 (p < 0.05). Conclusion: The minimum inhibitory concentration (MIC) was obtained at a concentration of 0.1% and the minimum bactericidal concentration (MBC) was obtained at 0.3% concentration. Keywords: Flavonoid Fraction, MIC, MBC, Porphyromonas Gingivalis, Ramania Leaf Extract.

Daya Hambat Minyak Hati Ikan Hiu Terhadap Pertumbuhan Bakteri Porphyromonas gingivalis

DENTA ◽  
2015 ◽  
Vol 9 (2) ◽  
pp. 129
Author(s):  
Felisitas Maria Agustina ◽  
Dian Mulawarmanti ◽  
Yoifah Rizka Wedarti
Keyword(s):  
Porphyromonas Gingivalis ◽  
Control Group ◽  
Strain Atcc ◽  
Control Group Design ◽  
Group Design ◽  
Post Test

<p><strong> </strong></p><p><strong>Latar belakang : </strong><em>Porphyromonas gingivalis </em>adalah bakteri paling dominan yang ditemukan pada periodontitis kronis. Antibakteri konvensional(antibiotik), terutama tetrasiklin sering digunakan untuk menunjang terapi periodontal, akan tetapi penggunaan antibiotik sering menimbulkan resisten, alergi, dan toksik.  Minyak hati ikan hiu spesies <em>Cenctrophorus sp </em>memiliki sifat antibakteri melalui kandungannya yaitu <em>squalene </em>dan<em> squalamine, </em>sehingga memiliki potensi untuk dikembangkan sebagai terapi ajuvan pada penyakit periodontal. <strong>Tujuan : </strong>Mengetahui daya hambat minyak hati ikan hiu terhadap pertumbuhan bakteri <em>Porphyromonas gingivalis. </em><strong>Metode : </strong>Penelitian ini menggunakan rancangan penelitian <em>post test only control group design.</em> Subjek penelitian adalah bakteri <em>Porphyromonas gingivalis </em>strain ATCC 33277 sebanyak 30 sampel yang dibagi menjadi 5 kelompok. Tiga kelompok diberi minyak hati ikan hiu dengan konsentrasi 10%, 15%, dan 20%. Kontrol positif diberi tetrasiklin dan kontrol negatif diberi DMSO 1%. Daya hambat diperiksa dengan menggunakan metode difusi dan diinokulasikan pada media <em>MH </em>agar. Daya hambat dihitung dengan mengukur diameter zona jernih pada disk dengan menggunakan <em>digital callipers </em>dalam satuan milimeter. <strong>Hasil : </strong>Minyak hati ikan hiu dapat menghambat pertumbuhan bakteri <em>Porphyromonas gingivalis </em>pada setiap konsentrasi. Konsentrasi 10% (9,06 mm), konsentrasi 15% (11,31 mm), konsentrasi 20% (13,2 mm), sedangkan kontrol negatif (6,01 mm), dan  kontrol positif (30,09 mm). <strong>Simpulan : </strong>Minyak hati ikan hiu dapat menghambat pertumbuhan bakteri <em>Porphyromonas gingivalis.</em><em></em></p><p><em> </em></p>

Comparative analysis of polymorphic variants of IL-17A and MMP-1 genes with the risk of developing chronic periodontitis in petrochemical workers

2020 ◽  
Vol 60 (10) ◽  
pp. 687-693
Author(s):  
Iskander I. Zaidullin ◽  
Denis O. Karimov ◽  
Lilija K. Karimova ◽  
Milyausha F. Kabirova ◽  
Rasima R. Galimova ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Chronic Periodontitis ◽  
Periodontal Diseases ◽  
Clinical Manifestations ◽  
Control Group ◽  
Periodontal Tissues ◽  
Dental Examination ◽  
Number Of Patients ◽  
Increased Risk ◽  
Harmful Substances

The susceptibility to the development and progression of inflammatory periodontal diseases, which depends on genetic and external factors (smoking, stress, oral hygiene), varies widely. In the development of these diseases, an important role is played not only by the presence of periodontal pathogenic microorganisms, but also by the presence of congenital or acquired immunodeficiency, immunoregulatory defects. The immune system plays a key role in the physiological and pathological processes of periodontal tissues. In this regard, IL17, produced by CD4+ Th cells, which has both Pro-inflammatory and protective activity, is of particular interest in the pathogenesis of periodontitis. The aim of study was to identify the relationship between polymorphic loci of the IL-17A (rs2275913) and MMP-1 (rs1799750) genes and clinical manifestations of chronic periodontitis in petrochemical workers. Dental examination was performed in 92 ethylene oxide production workers with chronic periodontitis and 74 patients with chronic periodontitis who did not come into contact with chemical factors (control group). Genotyping of polymorphisms rs2275913 of the IL17A gene and rs1799750 of the MMP1 gene was performed by allele-specific real-time polymerase chain reaction (PCR). Hygienic assessment of the degree of air pollution of the working area with harmful substances was carried out by gas chromatography according to the guidelines for the determination of harmful substances in the air № 5098-89, № 3119-84. When comparing the results of studies of both groups, there were no statistically significant differences in the frequency distributions of allelic variants and genotypes of the IL-17A and MMP-1 genes. The AA/AG genotypes of the IL-17A gene were associated with an increased risk of severe disease compared to the GG genotype in workers in the main group (OR=6.1; 95% CI 1.33-28.5; p=0.021) and in the control group (OR=7.26; 95% CI 1.34-39.25; p=0.016). Carriers of the A allele in the control group increased the risk of severe chronic periodontitis by 2.4 times compared to carriers of the G allele (OR=2.41; 95% CI 1.19-4.87; p=0.014). During the dental examination of employees of the ethylene oxide plant, the clinical course of periodontal diseases was more severe in comparison with the control group, and the number of patients with severe periodontitis was twice as high. It was found that the AA/AG genotypes of the IL-17A gene and the carrier of the A allele are associated with increased susceptibility to the development of severe chronic periodontitis. The association between the MMP-1 gene polymorphism and the risk of severe forms of chronic periodontitis has not been established. A risk factor for the development of inflammatory periodontal diseases in employees of the petrochemical complex is a complex of harmful production factors.

Optimization of the terms of supportive periodontal therapy using photoactivated disinfection

2019 ◽  
Vol 24 (2) ◽  
pp. 121-126 ◽  
Author(s):  
V. G. Atrushkevich ◽  
L. Yu. Orekhova ◽  
O. O. Yanushevich ◽  
E. Yu. Sokolova ◽  
E. S. Loboda
Keyword(s):  
Chronic Periodontitis ◽  
Adjunctive Treatment ◽  
Control Group ◽  
Clinical Parameters ◽  
Ozone Therapy ◽  
Pocket Depth ◽  
Clinical Attachment Loss ◽  
Supportive Periodontal Therapy ◽  
Tannerella Forsythensis ◽  
Observation Period

Relevance: to indentify if periodontal treatment which is presented by photoactivated disinfection (PAD) adjunctively to scaling and root planing (SRP) yield better outcomes than ozone therapy as an adjunct to SRP in periodontitis.Materials and methods: we examined 57 (mean age 49,3 ± 1,02) patients with chronic periodontitis, divided into groups, SRP + PAD, SRP + ozone therapy and SRP alone. Subgingival plaque samples were subjected to DNA extraction and real time PCR amplifcation for detection Porphyromonas gingivalis (Pg), Prevotella intermedia (Pi), Tannerella forsythensis (Tf), Treponema denticola (Td), Aggregatibacter actinomycetemcomitans (Aa). The amount of periodontopathogens and clinical parameters including plaque index, clinical attachment loss, pocket depth, bleeding on probing were measured at baseline, after 40, 90 and 180 days.Results: the results in groups of PAD+SRP and ozone therapy+SRP showed an improvement in all clinical parameters PI, BOP, PD, CAL and the quantity of Pg, Td and Tf compared to the control group during an observation period.Conclusion: the results showed additional benefts from PAD and ozone therapy as an adjunctive treatment to SRP for patients of chronic periodontitis.

scholarly journals POS0068 HIGH LEVELS OF PORPHYROMONAS GINGIVALIS AND PREVOTELLA INTERMEDIA ANTIBODIES IN CHILDREN WITH JUVENILE IDIOPATHIC ARTHRITIS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 240.2-241
Author(s):  
F. Zekre ◽  
R. Cimaz ◽  
M. Paul ◽  
J. L. Stephan ◽  
S. Paul ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Juvenile Idiopathic Arthritis ◽  
Periodontal Disease ◽  
Porphyromonas Gingivalis ◽  
Joint Disease ◽  
Control Group ◽  
Prevotella Intermedia ◽  
Igg Antibodies ◽  
Idiopathic Juvenile Arthritis ◽  
High Level

Background:Idiopathic juvenile arthritis (JIA) is a heterogeneous group of pathologies whose origin remains unknown at present (1). They are characterised by a systemic inflammatory and joint disease affecting children under 16 years of age. The current classification groups the different forms of JIA into 7 distinct entities (systemic forms, polyarticular forms with or without rheumatoid factors, oligoarticular forms, inflammatory arthritis associated with enthesopathies (ERA), arthritis associated with psoriasis and unclassifiable arthritis). Exact etiology of JIA is still unknown. To date, the various hypotheses put forward on the occurrence of JIAs integrate the genetic and environmental framework.The link between periodontal disease and rheumatoid arthritis (RA) is largely reported. Recently, Porphyromonas gingivalis (P. gingivalis) infection explained the occurrence of arthritis in rodent and in RA (2). Several studies mention the beneficial effect of P. gingivalis treatment on disease activity.Currently, there are very few studies on the prevalence of P. gingivalis in patients with JIA and the possible involvement of the germ in the development of inflammatory joint diseases in the pediatric population(3)(4).Objectives:The objective of our study is to determine presence of high IgG antibodies against P. gingivalis and Prevotella Intermedia in a cohort of patients with JIA compared to a control population and to determine variation of level according to sub-classes of JIA.Methods:Sera were obtained from 101 patients satisfying the ILAR classification criteria for JIA and in 25 patients with two other dysimmune disorders (type 1 diabetes and juvenile inflammatory bowel disease). Level of IgG antibodies against P. gingivalis and Prevotella Intermedia were obtained by homemade ELISA already used previously (5).Results:In the JIA group, major children were oligarthritis (47.5%), polyarthritis represents 31.7% of JIAs, ERA and systemic forms of JIA are respectively 9 and 11%. For the control group, 10 (40%) children had diabetes and 15 (60%) had IBD.Levels of anti-P. gingivalis anti-Prevotella Intermedia antibodies were higher in AJI group compared at control groups (P<0.01, P<0.05). Theses difference are mainly related to oligoarthritis and ERA subsets for both P. gingivalis and Prevotella Intermedia.Figure 1.Relative titer of antibodies to P. gingivalis and anti Prevotella intermedia. *: P<0.05; **: P<0.01; ***: P<0.001. P. gingivalis (control vs oligoarthritis p= 0.0032. control vs ERA p= 0.0092). Prevotella intermedia (control vs oligoarthritis p= 0.0194. control vs ERA p= 0.0039).Conclusion:We confirmed high level of anti-P. gingivalis and anti-Prevotella intermedia antibodies in JIA compared to other inflammatory disorders. For the first time, we observed that this high level was mainly in oligoarthritis and ERA. Further investigations are required to investigate involvement of oral dysbiosis in AJI pathogenesis. As observed in RA, it could be a new way to integrate in JIA therapy management.References:[1]Thatayatikom A, De Leucio A. Juvenile Idiopathic Arthritis (JIA). StatPearls Publishing; 2020[2]Cheng Z, Meade J, Mankia K, Emery P, Devine DA. Periodontal disease and periodontal bacteria as triggers for rheumatoid arthritis. Best Pract Res Clin Rheumatol. 2017;31(1):19–30.[3]Romero-Sánchez C, Malagón C, Vargas C, Fernanda Torres M, Moreno LC, Rodríguez C, et al. Porphyromonas Gingivalis and IgG1 and IgG2 Subclass Antibodies in Patients with Juvenile Idiopathic Arthritis. J Dent Child Chic Ill. 2017 May 15;84(2):72–9.[4]Lange L, Thiele GM, McCracken C, Wang G, Ponder LA, Angeles-Han ST, et al. Symptoms of periodontitis and antibody responses to Porphyromonas gingivalis in juvenile idiopathic arthritis. Pediatr Rheumatol Online J. 2016 Feb 9[5]Rinaudo-Gaujous M, Blasco-Baque V, Miossec P, Gaudin P, Farge P, Roblin X, et al. Infliximab Induced a Dissociated Response of Severe Periodontal Biomarkers in Rheumatoid Arthritis Patients. J Clin Med. 2019 May 26;8(5).Disclosure of Interests:None declared.

scholarly journals Detection of Salivary miRNAs That Predict Chronic Periodontitis Progression: A Cohort Study

2021 ◽  
Vol 18 (15) ◽  
pp. 8010
Author(s):  
Kohei Fujimori ◽  
Toshiki Yoneda ◽  
Takaaki Tomofuji ◽  
Daisuke Ekuni ◽  
Tetsuji Azuma ◽  
...  
Keyword(s):  
Cohort Study ◽  
Chronic Periodontitis ◽  
Characteristic Curve ◽  
Control Group ◽  
Discrimination Power ◽  
Whole Saliva ◽  
Supportive Periodontal Therapy ◽  
New Biomarkers ◽  
Unstimulated Whole Saliva ◽  
Attachment Level

The aim of this two-year cohort study was to investigate salivary microRNAs (miRNAs) that predict periodontitis progression. A total of 120 patients who underwent supportive periodontal therapy were recruited. Unstimulated whole saliva was collected at baseline. Two years later, 44 patients were followed up (median age, 67.1 years) and divided into two groups: progression group (n = 22), with one or more sites with clinical attachment level (CAL) progression (>3 mm compared with baseline) or tooth extraction due to periodontitis progression; and the control group (n = 22), which did not exhibit CAL progression. In the microarray analysis of salivary miRNAs, hsa-miR-5571-5p, hsa-miR-17-3p, hsa-let-7f-5p, hsa-miR-4724-3p, hsa-miR-99a-5p, hsa-miR-200a-3p, hsa-miR-28-5p, hsa-miR-320d, and hsa-miR-31-5p showed fold change values <0.5 or ≥2.0 in the progression group compared with the control group (p < 0.05). On receiver operating characteristic curve analysis, areas under the curves of hsa-miR-5571-5p, hsa-let-7f-5p, hsa-miR-99a-5p, hsa-miR-28-5p, and hsa-miR-320d were >0.7, indicating fair discrimination power. The expressions of salivary hsa-miR-5571-5p, hsa-let-7f-5p, hsa-miR-99a-5p, hsa-miR-28-5p, and hsa-miR-320d were associated with periodontitis progression in patients with chronic periodontitis. These salivary miRNAs may be new biomarkers for progression of periodontitis, and monitoring them may contribute to new diagnostics and precision medicine for periodontitis.

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