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Yaghmoor W, Ruiz-Torruella M, Ogata Y, Natto ZS, Finkelman M, Kawai T, Hur Y. Effect of preoperative chlorhexidine, essential oil, and cetylpyridinium chloride mouthwashes on bacterial contamination during dental implant surgery: A randomized controlled clinical trial. Saudi Dent J 2024; 36:492-497. [PMID: 38525187 PMCID: PMC10960146 DOI: 10.1016/j.sdentj.2023.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 12/23/2023] [Accepted: 12/25/2023] [Indexed: 03/26/2024] Open
Abstract
Background Although the role of chlorhexidine and other mouthwashes in periodontal therapy has been elucidated, little information is available on their use as routine preoperative mouth rinses before surgery, especially in periodontal procedures such as dental implant surgery. Objective This study aimed to compare the efficacy of preoperative chlorhexidine, essential oil, and cetylpyridinium chloride mouthwashes in reducing bacterial contamination at the time of implant placement. Materials and Methods Eligible patients who underwent dental implant surgery were randomly divided into four groups based on the mouthwash used: (1) 0.12 % chlorhexidine, (2) essential oil, (3) cetylpyridinium chloride, and (4) saline (served as the control group). All the patients of each group rinsed preoperatively with 15 mL of the respective mouthwash for 60 s. Saliva samples before (pre) and immediately after rinsing with the mouthwash (post) and after suturing the flap (end) were collected on the day of the implant placement. Real-time quantitative polymerase chain reaction (qPCR) was performed to analyze the samples and quantify the targeted periodontal pathogens using a propidium monoazide (PMA) dye. Results Forty patients were included in the study. Real-time qPCR demonstrated a significant reduction in the number of pathogens in the saliva samples of the mouthwash groups compared to that of the control group. A statistically significant difference was observed between the groups for the pre-post and pre-end samples (p < 0.001) but not for the post-end samples (p = 0.203). A statistically significant difference was observed between the chlorhexidine, essential oil, and cetylpyridinium chloride mouthwash groups and the saline group (P < 0.001). The bacterial counts significantly differed with and without the use of the PMA dye. Conclusions Preoperative chlorhexidine, essential oil, and cetylpyridinium chloride mouthwashes can reduce the bacterial load at the time of implant placement, thereby reducing the incidence of implant-related complications.
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Affiliation(s)
- Wael Yaghmoor
- Department of Basic and Clinical Oral Sciences, College of Dental Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Periodontology, Tufts University School of Dental Medicine, Boston, MA, USA
| | | | - Yumi Ogata
- Department of Periodontology, Tufts University School of Dental Medicine, Boston, MA, USA
| | - Zuhair S. Natto
- Department of Dental Public Health, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Matthew Finkelman
- Department of Public Health and Community Service, Tufts University School of Dental Medicine, Boston, MA, USA
| | - Toshi Kawai
- Department of Oral Science and Translation Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Yong Hur
- Department of Periodontology, Tufts University School of Dental Medicine, Boston, MA, USA
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Jowkar Z, Moaddeli A, Shafiei F, Tadayon T, Hamidi SA. Synthesis and characterization of mesoporous zinc oxide nanoparticles and evaluation of their biocompatibility in L929 fibroblasts. Clin Exp Dent Res 2024; 10:e844. [PMID: 38345519 PMCID: PMC10828904 DOI: 10.1002/cre2.844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 12/27/2023] [Accepted: 01/05/2024] [Indexed: 02/15/2024] Open
Abstract
OBJECTIVES This study aimed to synthesize and characterize mesoporous zinc oxide nanoparticles (ZnO NPs) and also to evaluate the cytotoxicity of mesoporous ZnO NPs on L929 mouse fibroblast cell lines using 3-(4,5- dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. MATERIALS AND METHODS The synthesized mesoporous ZnO NPs were extensively characterized using X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) analysis, field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectra (EDAX), Fourier-transform infrared spectroscopy (FTIR), and dynamic light scattering (DLS). The cytotoxicity of mesoporous ZnO NPs was assessed by MTT assay. The study groups for cytotoxicity assay were normal saline, 0.1% calcined mesoporous ZnO NP solution, 1% calcined mesoporous ZnO NP solution, 0.1% noncalcined mesoporous ZnO NP solution, 1% noncalcined mesoporous ZnO NP solution, 0.1% ZnO NP solution, 1% ZnO NP solution, 2% chlorhexidine, and phosphate-buffered saline (PBS). The percentages of mean ± standard deviation of viable cells were analyzed. RESULTS Characterization of mesoporous ZnO NPs revealed that all the particles were in a more or less spherical shape with a wide particle size distribution of 70-100 nm. TEM image showed the uniformed and aggregated ZnO NPs with a typical size of 10-15 nm. BET analysis showed a mesoporous structure for the prepared mesoporous ZnO NPs. According to the MTT assay, chlorhexidine had the lowest cell viability percentage. Cell viability percentages of 0.1% mesoporous ZnO NP solutions (calcined and noncalcined) were statistically, significantly higher than 0.1% ZnO NP solution (p < .05). Cell viability percentages of 0.1% calcined and noncalcined mesoporous ZnO NP solutions and 0.1% ZnO NP solution were statistically, significantly higher than the 1% solutions (p < .05). CONCLUSION Mesoporous ZnO NPs exhibited less cytotoxicity against L929 mouse fibroblast cell lines compared to CHX and ZnO NPs, hence are safe to use.
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Affiliation(s)
- Zahra Jowkar
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
| | - Ali Moaddeli
- Legal Medicine Research CenterLegal Medicine OrganizationTehranIran
| | - Fereshteh Shafiei
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
| | - Tara Tadayon
- Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
| | - Seyed Ahmadreza Hamidi
- Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
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Basha NA, Karkoutly M, Bshara N. Comparative efficacy of topical povidone-iodine and chlorhexidine gel on dental plaque regrowth in toddlers: A randomized controlled trial. Clin Exp Dent Res 2023; 9:764-771. [PMID: 37345210 PMCID: PMC10582209 DOI: 10.1002/cre2.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/27/2023] [Accepted: 06/09/2023] [Indexed: 06/23/2023] Open
Abstract
OBJECTIVES This study aimed to compare and evaluate the efficacy of topical use of povidone-iodine (PVP-I) solution and chlorhexidine (CHX) gel on dental plaque regrowth after 3 and 7 days in toddlers aged 24-36 months. MATERIALS AND METHODS A randomized controlled trial that included 45 healthy toddlers aged 24-36 months, who were randomly assigned to three groups. The first group received a placebo (distilled water (DW)) (negative control). The second group received topical CHX gel (0.2% w/v) (positive control). The third group received topical PVP-I solution (10% w/v). Plaque accumulation was measured at the baseline (t0 ), after 3 days (t1 ) and after 7 days (t2 ) using the Turesky-modified Quigley-Hein plaque index (TMQHPI). Oral hygiene practices were prohibited during the trial period. The trial ID is ACTRN12623000567628. RESULTS In the DW group, the mean of the TMQHPI score was 1.89 ± 0.67 at t0 and decreased to 1.45 ± 0.66 at t1 (p = .028). Similarly, in the CHX group, the mean of the TMQHPI score was 1.83 ± 1.06 at t0 and decreased to 1.02 ± 0.99 at t1 (p = .033). Regarding the PVP-I group, the mean of the TMQHPI score went from 1.84 ± 0.85 to 1.01 ± 0.61 at t1 and then increased to 1.57 ± 0.74 at t2 . Those changes were statistically significant (p = .001) and (p = .002), respectively. No statistically significant difference was noted between TMQHPI scores at t0 (p = .789). Regarding t1 and t2 , no statistically significant difference was found between the three groups (p > .05). CONCLUSION CHX and PVP-I efficacy lasted only for 3 days, and PVP-I was not superior to CHX in terms of plaque control in toddlers. However, further studies are needed to determine the long-term efficacy of these antiplaque agents in toddlers.
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Affiliation(s)
- Nour Al Basha
- Department of Pediatric DentistryDamascus UniversityDamascusSyrian Arab Republic
| | - Mawia Karkoutly
- Department of Pediatric DentistryDamascus UniversityDamascusSyrian Arab Republic
| | - Nada Bshara
- Department of Pediatric DentistryDamascus UniversityDamascusSyrian Arab Republic
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Kiperman T, Li W, Xiong X, Li H, Horne D, Ma K. Targeted screening and identification of chlorhexidine as a pro-myogenic circadian clock activator. Stem Cell Res Ther 2023; 14:190. [PMID: 37525228 PMCID: PMC10391781 DOI: 10.1186/s13287-023-03424-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 07/21/2023] [Indexed: 08/02/2023] Open
Abstract
BACKGROUND The circadian clock is an evolutionarily conserved mechanism that exerts pervasive temporal control in stem cell behavior. This time-keeping machinery is required for orchestrating myogenic progenitor properties in regenerative myogenesis that ameliorates muscular dystrophy. Here we report a screening platform to discover circadian clock modulators that promote myogenesis and identify chlorhexidine (CHX) as a clock-activating molecule with pro-myogenic activities. METHODS A high-throughput molecular docking pipeline was applied to identify compounds with a structural fit for a hydrophobic pocket within the key circadian transcription factor protein, Circadian Locomotor Output Cycles Kaput (CLOCK). These identified molecules were further screened for clock-modulatory activities and functional validations for pro-myogenic properties. RESULTS CHX was identified as a clock activator that promotes distinct aspects of myogenesis. CHX activated circadian clock that reduced cycling period length and augmented amplitude. This action was mediated by the targeted CLOCK structure via augmented interaction with heterodimer partner Bmal1, leading to enhanced CLOCK/Bmal1-controlled transcription with upregulation of core clock genes. Consistent with its clock-activating function, CHX displayed robust effects on stimulating myogenic differentiation in a clock-dependent manner. In addition, CHX augmented the proliferative and migratory activities of myoblasts. CONCLUSION Our findings demonstrate the feasibility of a screening platform to discover clock modulators with myogenic regulatory activities. Discovery of CHX as a pro-myogenic molecule could be applicable to promote regenerative capacities in ameliorating dystrophic or degenerative muscle diseases.
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Affiliation(s)
- Tali Kiperman
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Weini Li
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Xuekai Xiong
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Hongzhi Li
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - David Horne
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Ke Ma
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA.
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Shayegh M, Sorenson C, Downey J, Lin S, Jiang Y, Sodhi P, Sullivan V, Howard KM, Kingsley K. Assessment of SARS-CoV-2 (COVID-19) Clinical Mouthwash Protocol and Prevalence of the Oral Pathogen Scardovia wiggsiae: A Pilot Study of Antibacterial Effects. Methods Protoc 2023; 6:65. [PMID: 37489432 PMCID: PMC10366884 DOI: 10.3390/mps6040065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/01/2023] [Accepted: 07/04/2023] [Indexed: 07/26/2023] Open
Abstract
One protocol in healthcare facilities and dental offices due to the COVID-19 pandemic for reducing the amount of detectable oral SARS-CoV-2 has been gargling with mouthwash for 60 s. This protocol lasts longer than the daily routine for most patients and may have unexpected benefits in reducing oral microbes as a result. This project evaluated the prevalence of the newly identified oral pathogen Scardovia wiggsiae before and after this procedure to determine any measurable effects. Using an approved protocol, n = 36 pre-mouthwash patient samples, n = 36 matched post-mouthwash samples, and n = 36 matched recall samples were identified (total sample number n = 108). DNA was isolated from each sample (pre-, post-mouthwash, and recall). Screening using qPCR and validated primers revealed n = 10/36 or 27.8% tested positive for Scardovia among the pre-mouthwash (Sample A) isolates with n = 3/36 or 8.3% testing positive among the post-mouthwash (Sample B) isolates. Screening of the recall (Sample C) samples has revealed n = 10/36, or 27.8% once again tested positive for Scardovia, demonstrating that this pathogen was found among a significant proportion of pediatric patient samples. Moreover, the COVID-19-related procedure of requiring sustained mouth washing prior to clinical treatment appears to reduce the levels of detectable Scardovia, at least initially. However, this study found no long-term effects using this isolated protocol.
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Affiliation(s)
- Melika Shayegh
- Department of Advanced Education in Pediatric Dentistry, School of Dental Medicine, University of Nevada, Las Vegas, 1700 W Charleston Boulevard, Las Vegas, NV 89106, USA
| | - Chase Sorenson
- Department of Clinical Sciences, School of Dental Medicine, University of Nevada, Las Vegas, 1700 W Charleston Boulevard, Las Vegas, NV 89106, USA
| | - Jackson Downey
- Department of Clinical Sciences, School of Dental Medicine, University of Nevada, Las Vegas, 1700 W Charleston Boulevard, Las Vegas, NV 89106, USA
| | - Summer Lin
- Department of Clinical Sciences, School of Dental Medicine, University of Nevada, Las Vegas, 1700 W Charleston Boulevard, Las Vegas, NV 89106, USA
| | - Yuxin Jiang
- Department of Clinical Sciences, School of Dental Medicine, University of Nevada, Las Vegas, 1700 W Charleston Boulevard, Las Vegas, NV 89106, USA
| | - Praneeti Sodhi
- Department of Advanced Education in Pediatric Dentistry, School of Dental Medicine, University of Nevada, Las Vegas, 1700 W Charleston Boulevard, Las Vegas, NV 89106, USA
| | - Victoria Sullivan
- Department of Advanced Education in Pediatric Dentistry, School of Dental Medicine, University of Nevada, Las Vegas, 1700 W Charleston Boulevard, Las Vegas, NV 89106, USA
| | - Katherine M Howard
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada, Las Vegas, 1001 Shadow Lane Boulevard, Las Vegas, NV 89106, USA
| | - Karl Kingsley
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada, Las Vegas, 1001 Shadow Lane Boulevard, Las Vegas, NV 89106, USA
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Ahmedi J, Agani Z, Ademi Abdyli R, Prekazi Loxha M, Hamiti‐Krasniqi V, Rexhepi A, Stubljar D. Comparison between ozone and CHX gel application for reduction of pain and incidence of dry socket after lower third molar removal. Clin Exp Dent Res 2023; 9:75-81. [PMID: 36245293 PMCID: PMC9932237 DOI: 10.1002/cre2.675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/29/2022] [Accepted: 10/02/2022] [Indexed: 02/17/2023] Open
Abstract
OBJECTIVES The aim of this study is to evaluate the efficacy between ozone gas and 1% chlorhexidine (CHX) gel in the incidence of dry socket after surgical extraction of impacted lower third molars. MATERIAL AND METHODS Overall, 30 patients of both genders were included in the study, with indication of surgical extraction of lower third molar, positioned similarly after being clinically and radiographically checked by X-ray and orthopantomography. Each patient was subjected to both groups in separate sessions: treated with ozone gas and with CHX gel 1%. Data on pain intensity, number of taken analgesics-painkillers, and dry socket were recorded for 48 h and at Day 7. RESULTS Ozone gas and CHX gel effectively reduced pain intensity and prevented dry socket. The number of taken analgesics 48 h and 7 days after surgery showed no statistical significance. The same was observed for the distribution of pain. Only one patient reported the occurrence of dry socket 7 days after the surgical extraction. CONCLUSIONS Ozone gas and CHX 1% gel are both efficient in decreasing postoperative symptoms and incidence rates of dry socket, but in comparison to each other, the use of ozone gas is showing a bit better prevention capability.
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Affiliation(s)
- Jehona Ahmedi
- Department of Oral SurgeryUniversity of PrishtinaPrishtinaKosovo
| | - Zana Agani
- Department of Oral SurgeryUniversity of PrishtinaPrishtinaKosovo
| | | | | | | | | | - David Stubljar
- In‐medico, Department of Research and DevelopmentMetlikaSlovenia
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Muacevic A, Adler JR, Imran K, Lateef SS. Gas Chromatography-Mass Spectrometry (GC-MS) Metabolite Profiling of Citrus limon (L.) Osbeck Juice Extract Evaluated for its Antimicrobial Activity Against Streptococcus mutans. Cureus 2023; 15:e33585. [PMID: 36779149 PMCID: PMC9909753 DOI: 10.7759/cureus.33585] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2022] [Indexed: 01/11/2023] Open
Abstract
Purpose The present study aimed to determine the antimicrobial nature of Citrus limon juice extract against Streptococcus mutans and to identify its metabolic profile by gas chromatography-mass spectrometry (GC-MS) technique. Materials and methods The cariogenic bacteria S. mutans were procured from Microbial Type Culture Collection and Gene Bank (MTCC), Chandigarh, India, and revived on brain heart infusion (BHI) agar. The C. limon (L.) Osbeck fruits were authenticated from the University of Trans-Disciplinary Health Sciences and Technology (TDU), Bengaluru, India. The antibacterial property of lyophilized lemon juice extract (LJE) dissolved in methanol was evaluated against S. mutans (MTCC 497) by the agar well diffusion assay. GC-MS technique was employed to identify the volatile metabolite profile of the methanolic LJE sample. The metabolite masses of the respective compounds were identified using the National Institute of Standards and Technology (NIST) library. Results The methanolic LJE sample concentration from 5 to 25 mg/ml did not demonstrate antimicrobial activity, while 30 to 100 mg/ml displayed antibacterial activity against S. mutans. Chlorohexidine (100 µg/ml) was used as the positive control, while methanol was used as the negative control. Significant antimicrobial metabolites were detected in the methanolic LJE sample by GC-MS analysis. Maleic anhydride, succinic anhydride, 6-Oxa-bicyclo[3.1.0] hexan-3-one, and 3-methyl-2,5-Furandione were the key metabolites identified in the methanolic LJE sample. Conclusion The present study reports that C. limon is a potential candidate for the pharmaceutical industry as it possesses bioactive compounds demonstrating therapeutic properties. Further investigations are warranted to determine the individual and synergetic effects of identified metabolites in the methanolic LJE sample for its antimicrobial property. Special attention needs to be focussed on translational research for the development of anti-caries products from C. limon.
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Muacevic A, Adler JR. Chlorhexidine as a Disinfectant in the Prosthodontic Practice: A Comprehensive Review. Cureus 2022; 14:e30566. [PMID: 36415428 PMCID: PMC9676089 DOI: 10.7759/cureus.30566] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/12/2022] [Indexed: 01/25/2023] Open
Abstract
INTRODUCTION Controlling the cross-contamination between the dental clinic and laboratory is of utmost importance to maintain the health of dental healthcare personnel (DHCP) and patients. The aim of this paper was to review the current literature with regard to the use of chlorhexidine as a prosthetic disinfectant in prosthodontic practice. MATERIALS AND METHODS A scoping review of the literature was performed in Medline/PubMed, Ovid Embase, and the Cochrane Library. A search for all literature published from 1980 to 2021 was based on the following keywords: ['Chlorhexidine/gluconate' OR 'chlorhexidine', OR 'gluconate', OR 'denture disinfectants', OR 'antimicrobial', OR 'disinfectant', OR 'impression disinfectants, OR prosthesis' OR 'biofilm, microbiology'] OR [teeth]. We reviewed the disinfectant in terms of its mechanism of action, antimicrobial effectiveness, disinfection techniques, clinical applications, corrosiveness/damage to the structure of prostheses, and reasonable shelf life. RESULTS Chlorhexidine was tested under different concentrations ranging from 0.2 to 5%. It provided a significant reduction in biofilm viability but had a minimum effect on Candida albicans with a variable effect result that showed no significant differences in the dimensional changes by immersion of alginate dental impressions for no more than 10 minutes and no clinically significant dimensional differences on aluwax, polyether, condensation siloxane, and polyvinyl siloxane were noticed. Nonetheless, chlorhexidine altered the surface of the silicone and acrylic resins and affected the long-term hardness of the relining material. CONCLUSION Within the limitations of this review, the use of chlorhexidine disinfectant demonstrates a good measure in the reduction of contamination and cross-infection and has a minimal effect on the dimensional stability of most impression materials. Further studies with in-vitro testing are required to confirm these findings.
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Amaechi BT, Alshareif DO, Azees PAA, Shehata MA, Lima PP, Abdollahi A, Kalkhorani PS, Evans V, Bagheri A, Okoye LO. Anti-caries evaluation of a nano-hydroxyapatite dental lotion for use after toothbrushing: An in situ study. J Dent 2021; 115:103863. [PMID: 34743963 DOI: 10.1016/j.jdent.2021.103863] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 09/20/2021] [Accepted: 10/22/2021] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES The aim of this randomized, double-blind, two-arm crossover in situ study was to investigate whether nano-hydroxyapatite (nanoHAP) dental lotion (Apagard Deep Care) applied immediately after tooth-brushing with nanoHAP toothpaste (Apagard M-plus) enhances the remineralization promotion and the demineralization inhibition efficacies of nanoHAP toothpastes. METHODS 64 sound enamel blocks and 64 blocks bearing artificially-produced initial caries were produced from human permanent molar teeth. During each treatment period, lasting 14 days per arm, two blocks, one sound and one lesion-bearing, were exposed to either 5% nanoHAP-containing or placebo dental lotion after tooth-brushing with 5% nanoHAP toothpaste, via an intra-oral appliance worn by 30 adults in each of the study groups. Baseline and post-test mineral loss were quantified using transverse microradiography (TMR). One-sided t-test of one group mean was used for intragroup comparison, while two-sided t-test of two independent means was used to compare the two dental lotions. RESULTS Pairwise comparison (baseline vs. post-test) indicated significant (p<.001) remineralization by nanoHAP toothpaste in both groups. However, when compared against each other, there was a significantly (p<.001) greater percentage of remineralization with nanoHAP lotion [58.4(±1.8)%] than with placebo lotion [37.7(±2.2)%]. TMR examination showed absolute demineralization inhibition in sound enamel blocks exposed to either lotions. CONCLUSIONS Toothpaste containing 5% nanoHAP effectively remineralized initial caries and inhibited demineralization of healthy enamel; however, the application of a dental lotion containing 5% nanoHAP after brushing resulted in superior remineralization compared to a placebo lotion. CLINICAL SIGNIFICANCE Dental lotion containing 5% nanohydroxyapatite used immediately after toothbrushing with 5% nanohydroxyapatite toothpaste can serve as an adjunct to enhance the clinical benefits of the toothpaste.
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Affiliation(s)
- Bennett T Amaechi
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, United States.
| | - Dina O Alshareif
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, United States
| | - Parveez A Abdul Azees
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, United States
| | - Marina A Shehata
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, United States
| | - Patricia P Lima
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, United States
| | - Azadeh Abdollahi
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, United States
| | - Parisa S Kalkhorani
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, United States
| | - Veronica Evans
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, United States
| | - Ariana Bagheri
- Department of Biology, University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249, United States
| | - Linda O Okoye
- Faculty of Dentistry, College of Medicine, University of Nigeria, Ituku-Ozalla, Enugu, Nigeria
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Kalay TS, Kara Y, Karaoglu SA, Kolaylı S. Evaluation of Stabilized Chlorine Dioxide in Terms of Antimicrobial Activity and Dentin Bond Strength. Comb Chem High Throughput Screen 2021; 25:1427-1436. [PMID: 34397326 DOI: 10.2174/1386207324666210816121255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 03/30/2021] [Accepted: 04/12/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Antimicrobial agents are recommended for disinfection of the cavity following mechanical dental caries removal prior to application of restorative material. There is limited information about stabilized chlorine dioxide (ClO2) as a cavity disinfectant. OBJECTIVE The objective of this study is to determine the antimicrobial activity and effect on dentin bond strength of ClO2 compared to chlorhexidine digluconate (CHX), sodium hypochlorite (NaOCl) and ethanolic propolis extract (EPE). METHODS Antimicrobial activities of agents against oral pathogens (Staphylococcus aureus, Enterococcus faecalis, Streptococcus mutans, Lactobacillus acidophilus, Lactobacillus casei, Candida albicans, and Saccharomyces cerevisiae) and analyses of EPE were examined. Seventy-five mandibular third molars were sectioned, prepared and divided into five subgroups (n=15/group). Cavity disinfectants (2% CHX, 2.5% NaOCl, 30% EPE, 0.3% ClO2) were applied to etched dentin prior to adhesive and composite build-up. Shear bond strength (SBS) was evaluated with a universal testing machine at a crosshead speed of 0.5 mm/min. The SBS data were analyzed with one-way analysis of variance (ANOVA) and Tukey's post-hoc test (p <0.05). The failure modes were evaluated with a stereomicroscope. RESULTS It was determined that the compared disinfectants were showed different inhibition zone values against oral pathogens. ClO2 exhibited the highest antimicrobial activity, followed by CHX, NaOCI and EPE, respectively. No statistically significant difference was observed in the SBS values between the disinfectant treated groups and control group. The failure modes were predominantly mixed. CONCLUSION The use of 0.3% stabilized ClO2 as a cavity disinfectant agent exhibited high antimicrobial activity against oral pathogens and no adverse effects on SBS to etched dentin.
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Affiliation(s)
- Tugba Serin Kalay
- Department of Restorative Dentistry, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey
| | - Yakup Kara
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, Trabzon, Turkey
| | - Sengul Alpay Karaoglu
- Department of Biology, Faculty of Arts and Science, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sevgi Kolaylı
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, Trabzon, Turkey
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Khallaf YS, Hafez S, Shaalan OO. Evaluation of ICCMS versus CAMBRA Caries Risk Assessment Models Acquisition on Treatment Plan in Young Adult Population: A Randomized Clinical Trial. Clin Cosmet Investig Dent 2021; 13:293-304. [PMID: 34290532 PMCID: PMC8289689 DOI: 10.2147/ccide.s318313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/22/2021] [Indexed: 01/11/2023] Open
Abstract
PURPOSE To evaluate the difference between ICCMS and CAMBRA models on treatment plan of young adults. SETTINGS AND DESIGN A total of 104 young adult patients were randomly divided into two groups, either ICCMS or CAMBRA. PATIENTS AND METHODS Patients were examined according to the criteria of the ICDAS-II and caries risk was analyzed according to CAMBRA and divided into two equal groups according to treatment protocol. Caries incidence was assessed according to ICDAS-II criteria after 6 and 12 months. Statistical analysis used Chi-square test. A value of P ≤ 0.05 was considered statistically significant. Relative risk (RR) was used to determine the clinical significance. RESULTS The current study has revealed no statistically significant difference between both caries risk assessment models tested at baseline (P = 0.317), 6 months (P = 0.164) and 1 year (P = 0.287). Intra-group assessment of CAMBRA group showed a statistically significant difference in ICDAS scores (P = 0.002) after 12 months in high- and moderate-risk groups while low-risk group did not show statistically significant difference in ICDAS scores between different follow-up periods (P = 0.593) and (P = 1.000), respectively. ICCMS groups did not show statistically significant differences in any group along follow-up periods. CONCLUSION ICCMS and CAMBRA were equivalent in preventing new decay. The ICCMS treatment plan is a safe approach and its preventive products are available over the counter. However, it is more complicated than CAMBRA. While CAMBRA is simpler, it is less comprehensive, some of its products are not available over the counter worldwide (e.g. Duraphat 5000 ppm) and some of them may be accompanied by several side effects (e.g. chlorhexidine mouthwash), which may weaken its management protocol.
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Affiliation(s)
- Yomna Sayed Khallaf
- Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Shereen Hafez
- Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Omar Osama Shaalan
- Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
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12
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Alves D, Borges P, Grainha T, Rodrigues CF, Pereira MO. Tailoring the immobilization and release of chlorhexidine using dopamine chemistry to fight infections associated to orthopedic devices. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111742. [PMID: 33545884 DOI: 10.1016/j.msec.2020.111742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 11/03/2020] [Accepted: 11/17/2020] [Indexed: 11/30/2022]
Abstract
A crucial factor in the pathogenesis of orthopedics associated infections is that bacteria do not only colonize the implant surface but also the surrounding tissues. This study aimed to engineer an antimicrobial release coating for stainless steel (SS) surfaces, to impart them with the ability to prevent Staphylococci colonization. Chlorhexidine (CHX) was immobilized using two polydopamine (pDA)-based approaches: a one-pot synthesis, where CHX is dissolved together with dopamine before its polymerization; and a two-step methodology, comprising the deposition of a pDA layer to which CHX is immobilized. To modulate CHX release, an additional layer of pDA was also added for both strategies. Immobilization of CHX using a one-step approach yielded surfaces with a more homogenous coating and less roughness than the other strategies. The amount of released CHX was lower for the one-step approach, as opposed to the two-step approach yielding the higher release, which could be decreased by applying an outward layer of pDA. Both one and two-step approaches provided the surfaces with the ability to prevent bacterial colonization of the surface itself and kill most of bacteria in the bulk phase up to 10 days. This long-term antimicrobial performance alluded a stable and enduring immobilization of CHX. In terms of biocompatibility, the amount of CHX released from the one-step approach did not compromise the growth of mammalian cells, contrary to the two-step strategy. Additionally, the few bacteria that managed to adhere to surfaces modified with one-step approach did not show evidence of resistance towards CHX. Overall data underline that one-step immobilization of CHX holds great potential to be further applied in the fight against orthopedic devices associated infections.
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Affiliation(s)
- Diana Alves
- CEB - Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Patrick Borges
- CEB - Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Tânia Grainha
- CEB - Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Célia F Rodrigues
- CEB - Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Maria Olívia Pereira
- CEB - Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Mangal U, Kwon JS, Choi SH. Bio-Interactive Zwitterionic Dental Biomaterials for Improving Biofilm Resistance: Characteristics and Applications. Int J Mol Sci 2020; 21:E9087. [PMID: 33260367 PMCID: PMC7730019 DOI: 10.3390/ijms21239087] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 11/27/2020] [Accepted: 11/27/2020] [Indexed: 02/07/2023] Open
Abstract
Biofilms are formed on surfaces inside the oral cavity covered by the acquired pellicle and develop into a complex, dynamic, microbial environment. Oral biofilm is a causative factor of dental and periodontal diseases. Accordingly, novel materials that can resist biofilm formation have attracted significant attention. Zwitterionic polymers (ZPs) have unique features that resist protein adhesion and prevent biofilm formation while maintaining biocompatibility. Recent literature has reflected a rapid increase in the application of ZPs as coatings and additives with promising outcomes. In this review, we briefly introduce ZPs and their mechanism of antifouling action, properties of human oral biofilms, and present trends in anti-biofouling, zwitterionic, dental materials. Furthermore, we highlight the existing challenges in the standardization of biofilm research and the future of antifouling, zwitterated, dental materials.
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Affiliation(s)
- Utkarsh Mangal
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea;
| | - Jae-Sung Kwon
- Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul 03722, Korea;
- BK21 FOUR Project, Yonsei University College of Dentistry, Seoul 03722, Korea
| | - Sung-Hwan Choi
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea;
- BK21 FOUR Project, Yonsei University College of Dentistry, Seoul 03722, Korea
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Patil S, GS V, Baeshen H, Ali Sumayli MA, Saeed AlShahrani MA, Alkhallaf Najmi AI, Jafer MA, Vishwanathaiah S, Khan S. Current trends and future prospects of chemical management of oral biofilms. J Oral Biol Craniofac Res 2020; 10:660-664. [PMID: 32995256 PMCID: PMC7501456 DOI: 10.1016/j.jobcr.2020.08.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/16/2020] [Accepted: 08/25/2020] [Indexed: 01/13/2023] Open
Abstract
Oral biofilm, a tribulation encountered on a general basis is known to associate and contribute to many oral and systemic diseases. Eradication of these biofilms is a primary step in treatment of the underlying malady. Management of a biofilm is governed by various factors: the microenvironment within a biofilm, bond between the adhered surface and the biofilm, location of the biofilm, access to the biofilm for removal. Though annihilation is the priority, the mode of approach to achieve the same is equally important, because biofilm's heterogenic nature and location govern the strategical treatment required. Literature supports that the consequences of oral biofilms is not restricted to its home ground, but disseminated to other systems of the body. This contemplates us to procure knowledge on its development, structure and progression to aim its eradication. Therefore, this review attempts to recognize the type of biofilm based on location and enumerate all the possible chemical modes of management for the specific type of oral biofilms encountered. In addition, to the traditional strategies prescribed or administered, newer approaches which are gaining popularity due to their ease and efficiency are also addressed. Frontiers in the above field, under investigation and promising in near future are also compiled. Thus, the present review aims to provide a comprehensive elucidation of chemical management of oral biofilms, both the conventional and novel approaches under investigation.
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Affiliation(s)
- Shankargouda Patil
- Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Vidya GS
- Sree NRJV Specialists Dental Clinic, Bangalore, India
| | - Hosam Baeshen
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | | | | | - Mohammed Abdurabu Jafer
- Department of Preventive Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
- Health Promotion Unit, Maastricht University, the Netherlands
| | - Satish Vishwanathaiah
- Department of Preventive Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Shahrukh Khan
- School of Nursing and Midwifery, Faculty of Health, Deakin University, Geelong, Australia
- Alfred Health Partnership, Melbourne, Australia
- Centre for Rural Health, College of Health and Medicine, University of Tasmania, Hobart, Australia
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15
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Shafiei F, Memarpour M, Jowkar Z. Effect of Silver Antibacterial Agents on Bond Strength of Fiber Posts to Root Dentin. Braz Dent J 2020; 31:409-416. [PMID: 32901718 DOI: 10.1590/0103-6440202003300] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/20/2020] [Indexed: 11/22/2022] Open
Abstract
This study was conducted to evaluate whether antibacterial pretreatment irrigation with silver nanoparticles (SNPs) and silver diamine fluoride (SDF) has any effect on bond strength of fiber posts cemented with three types of resin cements in root canal space. Fifty-four endodontically treated maxillary central incisor roots were prepared for fiber post (FRC Postec Plus NO.3, Ivoclar Vivadent) cementation and divided into nine groups in terms of three cement types and two pretreatments with silver antibacterial agents. The cements were as follows: an etch-and-rinse cement (ER, Excite DSC/Variolink N), a self-etch cement (SE, ED Primer/Panavia F2.0), and a self-adhesive cement (SA, Panavia SA Luting Plus). For each cement, the control group was with no treatment and two experimental groups were with SNPs and SDF treatments that were used after acid-etching for ER cement and after EDTA treatment for SE and SA cements. After fiber post cementation, each bonded root was horizontally sectioned into 1-mm thickness microslices to create two slices for each root region (apical, middle and coronal) and underwent push-out bond strength (PBS) test. Data in MPa were analyzed with two-way ANOVA and Tukey test (p=0.05). The interaction of the pretreatment type and cement type was significant (p<0.001). SNPs and SDF significantly increased PBS with ER cement (p≤0.04). This positive effect was also marginally significant for SDF with SE cement (p=0.049). For SA cement, SNPs showed a significant positive effect, but SDF had a significant adverse effect on PBS (p<0.001). The effect of pretreatment with silver antibacterial agents prior to adhesive cementation of fiber posts depends on the resin cement used. Contrary to SNPs with beneficial or no significant effect on bonding for all cements, SDF exhibited a deleterious effect with self-adhesive cement.
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Affiliation(s)
- Fereshteh Shafiei
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahtab Memarpour
- Oral and Dental Disease Research Center, Department of Pediatric Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Jowkar
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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16
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Jowkar Z, Fattah Z, Ghanbarian S, Shafiei F. The Effects of Silver, Zinc Oxide, and Titanium Dioxide Nanoparticles Used as Dentin Pretreatments on the Microshear Bond Strength of a Conventional Glass Ionomer Cement to Dentin. Int J Nanomedicine 2020; 15:4755-4762. [PMID: 32753864 PMCID: PMC7351978 DOI: 10.2147/ijn.s262664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 06/23/2020] [Indexed: 02/01/2023] Open
Abstract
Aim This study was conducted to evaluate the effects of three nanoparticle solutions used as dentin pretreatments on the microshear bond strength (µSBS) of a conventional glass ionomer cement (GIC) to dentin. Materials and Methods Ninety intact human molars were used after sectioning their occlusal surfaces to expose flat dentin surfaces. The specimens were randomly assigned to nine groups (n = 10). Group A was the control group (without using the cavity disinfectant). In groups B, C, D, and E, the prepared dentin surfaces were treated with 1 cc 2% chlorhexidine (CHX), 0.1% silver nanoparticle (SNP), 0.1% titanium dioxide nanoparticle (TNP), and 0.1% zinc oxide nanoparticle (ZNP) solutions for 1 minute, respectively, before applying the conditioner. CHX, SNPs, TNPs, and ZNPs were applied for 1 minute after applying the conditioner in groups F, G, H, and I, respectively. The specimens were restored with a conventional GIC and underwent µSBS testing after 24 hours. The data were analyzed using the one-way analysis of variance and Tukey’s test (p=0.05). Results The applications of the nanoparticles (SNP, TNP, and ZNP) after the conditioner were associated with significantly greater µSBS values compared to that of the control group (p values < 0.05). Significantly higher µSBS values were observed when TNP or ZNP was applied after the conditioner compared to their applications before the conditioner (p values < 0.05). The highest µSBS values were observed when TNP was applied after the conditioner. Conclusion Dentin pretreatment with the nanoparticles after applying the conditioner enhanced the bond strength of the GIC to dentin compared with the control group. The best results were obtained for the TNPs applied after the conditioner.
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Affiliation(s)
- Zahra Jowkar
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Fattah
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeedreza Ghanbarian
- Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fereshteh Shafiei
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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DelMauro MA, Kalberer DC, Rodgers IR. Infection prophylaxis in periorbital Mohs surgery and reconstruction: a review and update to recommendations. Surv Ophthalmol 2020; 65:323-347. [DOI: 10.1016/j.survophthal.2019.12.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 11/27/2019] [Accepted: 12/02/2019] [Indexed: 01/04/2023]
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18
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Chatzigiannidou I, Teughels W, Van de Wiele T, Boon N. Oral biofilms exposure to chlorhexidine results in altered microbial composition and metabolic profile. NPJ Biofilms Microbiomes 2020; 6:13. [PMID: 32198347 PMCID: PMC7083908 DOI: 10.1038/s41522-020-0124-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/27/2020] [Indexed: 01/31/2023] Open
Abstract
Oral diseases (e.g., dental caries, periodontitis) are developed when the healthy oral microbiome is imbalanced allowing the increase of pathobiont strains. Common practice to prevent or treat such diseases is the use of antiseptics, like chlorhexidine. However, the impact of these antiseptics on the composition and metabolic activity of the oral microbiome is poorly addressed. Using two types of oral biofilms—a 14-species community (more controllable) and human tongue microbiota (more representative)—the impact of short-term chlorhexidine exposure was explored in-depth. In both models, oral biofilms treated with chlorhexidine exhibited a pattern of inactivation (>3 log units) and fast regrowth to the initial bacterial concentrations. Moreover, the chlorhexidine treatment induced profound shifts in microbiota composition and metabolic activity. In some cases, disease associated traits were increased (such as higher abundance of pathobiont strains or shift in high lactate production). Our results highlight the need for alternative treatments that selectively target the disease-associated bacteria in the biofilm without targeting the commensal microorganisms.
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Affiliation(s)
| | - Wim Teughels
- Department of Oral Health Sciences, KU Leuven, Kapucijnenvoer 33, 3000, Leuven, Belgium
| | - Tom Van de Wiele
- Center for Microbial Ecology and Technology, Coupure Links 653, 9000, Gent, Belgium
| | - Nico Boon
- Center for Microbial Ecology and Technology, Coupure Links 653, 9000, Gent, Belgium.
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19
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Amaechi BT, AbdulAzees PA, Alshareif DO, Shehata MA, Lima PPDCS, Abdollahi A, Kalkhorani PS, Evans V. Comparative efficacy of a hydroxyapatite and a fluoride toothpaste for prevention and remineralization of dental caries in children. BDJ Open 2019; 5:18. [PMID: 31839988 PMCID: PMC6901576 DOI: 10.1038/s41405-019-0026-8] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/12/2019] [Accepted: 10/21/2019] [Indexed: 12/18/2022] Open
Abstract
Objective This in situ study compared the effectiveness of two toothpastes containing hydroxyapatite or 500 ppm fluoride in promoting remineralization and inhibiting caries development. Materials and methods Two enamel blocks (human primary teeth), one sound and one with artificially-produced caries lesion, were exposed to toothpaste containing either 10% hydroxyapatite or 500 ppm F− (amine fluoride) via intra-oral appliance worn by 30 adults in two-arm double blind randomized crossover study lasting 14 days per arm (ClinicalTrials.gov: NCT03681340). Baseline and post-test mineral loss and lesion depth (LD) were quantified using microradiography. One-sided t-test of one group mean was used for intragroup comparison (baseline vs. post-test), while two-sided t-test of two independent means was used to compare the two toothpaste groups. Results Pairwise comparison (baseline vs. test) indicated significant (p < 0.0001) remineralization and LD reduction by either toothpaste; however, when compared against each other, there was no statistically significant difference in remineralization or LD reduction between the two toothpastes. No demineralization could be observed in sound enamel blocks exposed to either toothpaste. While F− induced lesion surface lamination, HAP produced a more homogenous lesion remineralization. Conclusions 10% hydroxyapatite achieved comparable efficacy with 500 ppm F− in remineralizing initial caries and preventing demineralization. Thus the HAP toothpaste is confirmed to be equal to the fluoride toothpaste in this study.
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Affiliation(s)
- Bennett T Amaechi
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900 USA
| | - Parveez Ahamed AbdulAzees
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900 USA
| | - Dina Ossama Alshareif
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900 USA
| | - Marina Adel Shehata
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900 USA
| | | | - Azadeh Abdollahi
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900 USA
| | - Parisa Samadi Kalkhorani
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900 USA
| | - Veronica Evans
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900 USA
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Jowkar Z, Shafiei F, Asadmanesh E, Koohpeima F. Influence of silver nanoparticles on resin-dentin bond strength durability in a self-etch and an etch-and-rinse adhesive system. Restor Dent Endod 2019; 44:e13. [PMID: 31149611 PMCID: PMC6529797 DOI: 10.5395/rde.2019.44.e13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 12/27/2018] [Accepted: 03/02/2019] [Indexed: 11/20/2022] Open
Abstract
Objectives This study evaluated the effect of dentin pretreatment with silver nanoparticles (SNPs) and chlorhexidine (CHX) on the microshear bond strength (µSBS) durability of different adhesives to dentin. Materials and Methods Occlusal surfaces of 120 human molars were ground to expose flat dentin surfaces. The specimens were randomly assigned to six groups (n = 20). Three groups (A, B, and C) were bonded with Adper Single Bond 2 (SB) and the other groups (D, E, and F) were bonded with Clearfil SE Bond (SEB). Dentin was pretreated with CHX in groups B and E, and with SNPs in groups C and F. The specimens were restored with Z250 composite. Half of the bonded surfaces in each group underwent µSBS testing after 24 hours and the other half was tested after 6 months of water storage. Results SNP application was associated with a higher µSBS than was observed in the CHX and control groups for SEB after 24 hours (p < 0.05). A significantly lower µSBS was observed when no dentin pretreatment was applied compared to dentin pretreatment with CHX and SNPs for SB after 24 hours (p < 0.05). The µSBS values of the 6-month specimens were significantly lower than those obtained from the 24-hour specimens for all groups (p < 0.05). This decrease was much more pronounced when both adhesives were used without any dentin pretreatment (p < 0.05). Conclusions SNPs and CHX reduced the degradation of resin-dentin bonds over a 6-month period for both adhesive systems.
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Affiliation(s)
- Zahra Jowkar
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fereshteh Shafiei
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Elham Asadmanesh
- Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Koohpeima
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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Topical chlorhexidine, povidone-iodine and erythromycin in the repair of traumatic ulcers on the rat tongue: Clinical, histological and microbiological evaluation. Arch Oral Biol 2018; 87:218-225. [PMID: 29316457 DOI: 10.1016/j.archoralbio.2018.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 01/02/2018] [Accepted: 01/03/2018] [Indexed: 12/26/2022]
Abstract
OBJECTIVE This study investigated the effect of topical application of 0.12% chlorhexidine, 10% povidone-iodine and 50% erythromycin on the optimization of healing process of traumatic ulcers made on ventral tongue of rats. DESIGN Forty-Eight Wistar rats were randomly divided into four groups: control, chlorhexidine (Chx), povidone-iodine (PvI) and erythromycin (Er). An ulcer of 5 mm in diameter was made on the ventral tongue of the animals. After 24 h, a microbiological sample was taken and daily application of the substances started. Six animals each group were euthanized at 4 days and the others at 8 days postoperative, totaling three and seven days of treatment. Prior to euthanasia, a new microbiological collection was performed. RESULTS The experimental groups showed less area of residual ulcer. A significant difference was seen between the PvI and Chx in relation to the control after three days of treatment (p < 0.05). Although the experimental groups displayed greater newly formed epithelial area, there was no significant difference compared to the control (p > 0.05). Er exhibed the lowest inflammation scores after seven days of treatment (p < 0.05). PvI showed reduction of microorganisms at both times and under aerobic (p < 0.01 at 3 days and p < 0.001 at 7 days) and microaerophilic (p < 0.05) conditions. Er significantly reduced the count of microorganisms in aerobic condition when compared to control group (p < 0.05 at 3 days and p < 0.01 at 7 days). CONCLUSIONS All drugs promoted reduction of the microorganisms at the site of the injury, which may have a direct effect on the tissue repair process.
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Efficacy of a mouthrinse based on hydroxyapatite to reduce initial bacterial colonisation in situ. Arch Oral Biol 2017; 80:18-26. [DOI: 10.1016/j.archoralbio.2017.03.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 02/15/2017] [Accepted: 03/17/2017] [Indexed: 12/30/2022]
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Bhate D, Jain S, Kale R, Muglikar S. The comparative effects of 0.12% chlorhexidine and herbal oral rinse on dental plaque-induced gingivitis: A randomized clinical trial. J Indian Soc Periodontol 2015; 19:393-5. [PMID: 26392686 PMCID: PMC4555795 DOI: 10.4103/0972-124x.153478] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 02/02/2015] [Indexed: 11/19/2022] Open
Abstract
Background: Chlorhexidine (CHX) is considered as a gold standard of antimicrobial rinses. Various herbal oral rinses are available in the market. However, little is known of its effectiveness. Aim: The aim of this study was to evaluate the clinical changes after the usage of herbal oral rinse and 0.12% CHX. Materials and Methods: In a randomized clinical trial, 76 patients with dental plaque-induced gingivitis were assigned to Group I (Herbal Oral Rinse - Hiora®) and 76 patients with dental plaque-induced gingivitis to Group II (0.12% Chlorhexidine-Peridex®). Gingival index and Plaque index scores were recorded at baseline and 21 days after scaling. Results: Intragroup comparison in both groups showed that plaque index and gingival index scores were statistically significant after 21 days as compared to baseline. Intergroup comparison showed that plaque index scores and gingival index scores were statistically significant in Group II as compared to Group I. Conclusion: When herbal oral rinse was compared to 0.12% CHX, 0.12% CHX mouth rinse effectively reduced the clinical symptoms of plaque-induced gingivitis.
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Affiliation(s)
- Devaki Bhate
- Department of Periodontics, M A Rangoonwala College of Dental Sciences and Research Centre, Pune, Maharashtra, India
| | - Sanjay Jain
- Department of Periodontics, M A Rangoonwala College of Dental Sciences and Research Centre, Pune, Maharashtra, India
| | - Rahul Kale
- Department of Periodontics, M A Rangoonwala College of Dental Sciences and Research Centre, Pune, Maharashtra, India
| | - Sangeeta Muglikar
- Department of Periodontics, M A Rangoonwala College of Dental Sciences and Research Centre, Pune, Maharashtra, India
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Tang X, Sensat ML, Stoltenberg JL. The antimicrobial effect of chlorhexidine varnish on mutans streptococci in patients with fixed orthodontic appliances: a systematic review of clinical efficacy. Int J Dent Hyg 2015; 14:53-61. [PMID: 26257398 DOI: 10.1111/idh.12163] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2015] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To conduct a systematic review aimed to determine the antimicrobial efficacy of chlorhexidine varnishes (CHX-V) on mutans streptococci (MS) in patients during orthodontic treatment with fixed appliances. MATERIALS AND METHODS A systematic computerized database search was conducted using Ovid MEDLINE, Scopus and EMBASE up to September 2014. A Google search was also conducted to further identify articles that met the eligibility criteria. Clinical trials which used CHX-V alone as the intervention to investigate the antimicrobial effect of the varnish in subjects undergoing orthodontic treatment were included. Outcome measures included MS level reduction and/or decreased caries incidence from baseline data. RESULTS Nineteen articles were identified for full-text reading; eleven articles met the criteria for inclusion in this review. Type and concentration of CHX-V, bacterial sampling method, application frequency, sampling schedule, risk of bias and study outcomes are presented. CONCLUSION A limited number of studies with low risk of bias were available to address the antimicrobial efficacy of CHX-V on MS in patients during orthodontic treatment with fixed appliances. Therefore, while the majority of studies found CHX-V to be an effective antimicrobial against MS at an interval of 3-4 weeks, the strength of the recommendation is weak. Longitudinal studies are needed to determine whether this antimicrobial effect will contribute to clinically significant caries reduction in patients undergoing orthodontic treatment with fixed appliances.
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Affiliation(s)
- X Tang
- Division of Dental Hygiene, Department of Primary Dental Care, School of Dentistry, University of Minnesota, Minneapolis, MN, USA
| | - M L Sensat
- Private practice at Boger Dental, Plymouth, MN, USA
| | - J L Stoltenberg
- Division of Dental Hygiene, Department of Primary Dental Care, School of Dentistry, University of Minnesota, Minneapolis, MN, USA
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Pandit S, Cai JN, Song KY, Jeon JG. Identification of anti-biofilm components in Withania somnifera and their effect on virulence of Streptococcus mutans biofilms. J Appl Microbiol 2015; 119:571-81. [PMID: 25976122 DOI: 10.1111/jam.12851] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 04/14/2015] [Accepted: 05/12/2015] [Indexed: 12/21/2022]
Abstract
AIMS The aim of this study was to identify components of the Withania somnifera that could show anti-virulence activity against Streptococcus mutans biofilms. METHODS AND RESULTS The anti-acidogenic activity of fractions separated from W. somnifera was compared, and then the most active anti-acidogenic fraction was chemically characterized using gas chromatography-mass spectroscopy. The effect of the identified components on the acidogenicity, aciduricity and extracellular polymeric substances (EPS) formation of S. mutans UA159 biofilms was evaluated. The change in accumulation and acidogenicity of S. mutans UA159 biofilms by periodic treatments (10 min per treatment) with the identified components was also investigated. Of the fractions, n-hexane fraction showed the strongest anti-acidogenic activity and was mainly composed of palmitic, linoleic and oleic acids. Of the identified components, linoleic and oleic acids strongly affected the acid production rate, F-ATPase activity and EPS formation of the biofilms. Periodic treatment with linoleic and oleic acids during biofilm formation also inhibited the biofilm accumulation and acid production rate of the biofilms without killing the biofilm bacteria. CONCLUSIONS These results suggest that linoleic and oleic acids may be effective agents for restraining virulence of S. mutans biofilms. SIGNIFICANCE AND IMPACT OF THE STUDY Linoleic and oleic acids may be promising agents for controlling virulence of cariogenic biofilms and subsequent dental caries formation.
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Affiliation(s)
- S Pandit
- Department of Preventive Dentistry, School of Dentistry, Institute of Oral Bioscience and BK 21 Plus Program, Chonbuk National University, Jeonju, Korea
| | - J N Cai
- Department of Preventive Dentistry, School of Dentistry, Institute of Oral Bioscience and BK 21 Plus Program, Chonbuk National University, Jeonju, Korea
| | - K Y Song
- Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - J G Jeon
- Department of Preventive Dentistry, School of Dentistry, Institute of Oral Bioscience and BK 21 Plus Program, Chonbuk National University, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
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Flamee S, Gizani S, Caroni C, Papagiannoulis L, Twetman S. Effect of a chlorhexidine/thymol and a fluoride varnish on caries development in erupting permanent molars: a comparative study. Eur Arch Paediatr Dent 2015; 16:449-54. [PMID: 26059497 DOI: 10.1007/s40368-015-0192-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 05/13/2015] [Indexed: 11/28/2022]
Abstract
AIM To compare the caries preventive effect of a chlorhexidine/thymol-containing antibacterial varnish with a fluoride varnish when topically applied during the eruption of permanent molars. METHODS The study group consisted of 189 patients, 5-14 years of age, with one 1st or 2nd permanent molar in the process of eruption. After stratification for type of molar and stage of eruption, the patients were randomised to either quarterly topical applications with an antibacterial varnish (Cervitec(®) Plus; CV group) or biannual applications with a fluoride varnish plus biannual treatments with placebo varnish (Fluor Protector; FV group). The duration of the study was 2 years. The primary endpoint was caries incidence (initial and cavitated) in the erupting molars and the secondary outcome was salivary mutans streptococci (MS) counts. RESULTS The groups were balanced with respect to socio-economy, oral hygiene, dietary habits and caries experience at baseline. The dropout rate was 11.6 %. The caries incidence was low (< 10 %) in both groups and there was no significant difference between the CV and FV groups with respect to occlusal caries development in the erupting molars (relative risk 1.08, 95 % CI 0.94-1.25). Significantly lower levels of salivary MS were disclosed in the CV group at the end of the study (p < 0.05). CONCLUSIONS No difference in occlusal caries development in young permanent molars was displayed after topical applications of either a chlorhexidine/thymol varnish or a fluoride varnish during tooth eruption.
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Affiliation(s)
- S Flamee
- Department of Paediatric Dentistry, Dental School, National and Kapodistrian University of Athens, 2 Thivon Str, Goudi, 11527, Athens, Greece
| | - S Gizani
- Department of Paediatric Dentistry, Dental School, National and Kapodistrian University of Athens, 2 Thivon Str, Goudi, 11527, Athens, Greece.
| | - C Caroni
- Department of Mathematics, National Technical University of Athens, 9 Heroon Polytechniou str, 15780, Zografou, Athens, Greece
| | - L Papagiannoulis
- Department of Paediatric Dentistry, Dental School, National and Kapodistrian University of Athens, 2 Thivon Str, Goudi, 11527, Athens, Greece
| | - S Twetman
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Nørre Allé 20, 2200, Copenhagen N, Denmark
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Evans A, Leishman SJ, Walsh LJ, Seow WK. Inhibitory effects of antiseptic mouthrinses onStreptococcus mutans, Streptococcus sanguinisandLactobacillus acidophilus. Aust Dent J 2015; 60:247-54; quiz 270. [DOI: 10.1111/adj.12312] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2014] [Indexed: 12/11/2022]
Affiliation(s)
- A Evans
- Centre for Paediatric Dentistry; School of Dentistry; The University of Queensland; Brisbane Queensland
| | - SJ Leishman
- Centre for Paediatric Dentistry; School of Dentistry; The University of Queensland; Brisbane Queensland
| | - LJ Walsh
- Centre for Paediatric Dentistry; School of Dentistry; The University of Queensland; Brisbane Queensland
| | - WK Seow
- Centre for Paediatric Dentistry; School of Dentistry; The University of Queensland; Brisbane Queensland
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Bailey D, Adams G, Marinho VCC, Tsao C, Hyslop A, Morgan M. Chlorhexidine interventions for the prevention of caries in adults. Hippokratia 2015. [DOI: 10.1002/14651858.cd007856.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Denise Bailey
- University of Melbourne; School of Dental Science; 720 Swanston Street Melbourne VIC Australia 3010
| | - Geoff Adams
- University of Melbourne; School of Dental Science; 720 Swanston Street Melbourne VIC Australia 3010
| | - Valeria CC Marinho
- Queen Mary University of London; Clinical and Diagnostic Oral Sciences, Barts and The London School of Medicine and Dentistry; Turner Street Whitechapel London UK E1 2AD
| | - Claudine Tsao
- University of Melbourne; School of Dental Science; 720 Swanston Street Melbourne VIC Australia 3010
| | - Anne Hyslop
- University of Melbourne; School of Dental Science; 720 Swanston Street Melbourne VIC Australia 3010
| | - Michael Morgan
- University of Melbourne; School of Dental Science; 720 Swanston Street Melbourne VIC Australia 3010
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Walsh T, Oliveira‐Neto JM, Moore D. Chlorhexidine treatment for the prevention of dental caries in children and adolescents. Cochrane Database Syst Rev 2015; 2015:CD008457. [PMID: 25867816 PMCID: PMC10726983 DOI: 10.1002/14651858.cd008457.pub2] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Dental caries (tooth decay) is a common disease that is preventable by reducing the dietary intake of free sugars and using topical sodium fluoride products. An antibacterial agent known as chlorhexidine may also help prevent caries. A number of over-the-counter and professionally administered chlorhexidine-based preparations are available in a variety of formulations and in a range of strengths. Although previous reviews have concluded that some formulations of chlorhexidine may be effective in inhibiting the progression of established caries in children, there is currently a lack of evidence to either claim or refute a benefit for its use in preventing dental caries. OBJECTIVES To assess the effects of chlorhexidine-containing oral products (toothpastes, mouthrinses, varnishes, gels, gums and sprays) on the prevention of dental caries in children and adolescents. SEARCH METHODS We searched the Cochrane Oral Health Group Trials Register (25 February 2015), the Cochrane Central Register of Controlled Trials (CENTRAL; 2014, Issue 12), MEDLINE via OVID (1946 to 25 February 2015), EMBASE via OVID (1980 to 25 February 2015) and CINAHL via EBSCO (1937 to 25 February 2015). We handsearched several journals placed no language restrictions on our search. After duplicate citations were removed, the electronic searches retrieved 1075 references to studies. SELECTION CRITERIA We included parallel-group, randomised controlled trials (RCTs) that compared the caries preventive effects of chlorhexidine gels, toothpastes, varnishes, mouthrinses, chewing gums or sprays with each other, placebo or no intervention in children and adolescents. We excluded trials with combined interventions of chlorhexidine and fluoride or comparisons between chlorhexidine and fluoride interventions. DATA COLLECTION AND ANALYSIS Two review authors independently extracted trial data and assessed risk of bias. We resolved disagreements by consensus. We contacted trial authors for clarification or additional study details when necessary. The number of included studies that were suitable for meta-analysis was limited due to the clinical diversity of the included studies with respect to age, composition of intervention, and variation in outcome measures and follow-up. Where we were unable to conduct meta-analysis, we elected to present a narrative synthesis of the results. MAIN RESULTS We included eight RCTs that evaluated the effects of chlorhexidine varnishes (1%, 10% or 40% concentration) and chlorhexidine gel (0.12%) on the primary or permanent teeth, or both, of children from birth to 15 years of age at the start of the study. The studies randomised a total of 2876 participants, of whom 2276 (79%) were evaluated. We assessed six studies as being at high risk of bias overall and two studies as being at unclear risk of bias overall. Follow-up assessment ranged from 6 to 36 months.Six trials compared chlorhexidine varnish with placebo or no treatment. It was possible to pool the data from two trials in the permanent dentition (one study using 10% chlorhexidine and the other, 40%). This led to an increase in the DMFS increment in the varnish group of 0.53 (95% confidence interval (CI) -0.47 to 1.53; two trials, 690 participants; very low quality evidence). Only one trial (10% concentration chlorhexidine varnish) provided usable data for elevated mutans streptococci levels > 4 with RR 0.93 (95% CI 0.80 to 1.07, 496 participants; very low quality evidence). One trial measured adverse effects (for example, ulcers or tooth staining) and reported that there were none; another trial reported that no side effects of the treatment were noted. No trials reported on pain, quality of life, patient satisfaction or costs.Two trials compared chlorhexidine gel (0.12% concentration) with no treatment in the primary dentition. The presence of new caries gave rise to a 95% confidence interval that was compatible with either an increase or a decrease in caries incidence (RR 1.00, 95% CI 0.36 to 2.77; 487 participants; very low quality evidence). Similarly, data for the effects of chlorhexidine gel on the prevalence of mutans streptococci were inconclusive (RR 1.26, 95% CI 0.95 to 1.66; two trials, 490 participants; very low quality evidence). Both trials measured adverse effects and did not observe any. Neither of these trials reported on the other secondary outcomes such as measures of pain, quality of life, patient satisfaction or direct and indirect costs of interventions. AUTHORS' CONCLUSIONS We found little evidence from the eight trials on varnishes and gels included in this review to either support or refute the assertion that chlorhexidine is more effective than placebo or no treatment in the prevention of caries or the reduction of mutans streptococci levels in children and adolescents. There were no trials on other products containing chlorhexidine such as sprays, toothpastes, chewing gums or mouthrinses. Further high quality research is required, in particular evaluating the effects on both the primary and permanent dentition and using other chlorhexidine-containing oral products.
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Affiliation(s)
- Tanya Walsh
- School of Dentistry, The University of ManchesterCoupland III Building, Oxford RoadManchesterUKM13 9PL
| | - Jeronimo M Oliveira‐Neto
- Faculdade de Odontologia de Ribeirão Preto, Universidade de São PauloDepartamento de Materiais Dentários e PróteseAv. Vereador Manir Cali265 Alto da Boa VistaRibeirão PretoBrazil14025‐170
| | - Deborah Moore
- School of Dentistry, The University of ManchesterCoupland III Building, Oxford RoadManchesterUKM13 9PL
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Asawahame C, Sutjarittangtham K, Eitssayeam S, Tragoolpua Y, Sirithunyalug B, Sirithunyalug J. Antibacterial activity and inhibition of adherence of Streptococcus mutans by propolis electrospun fibers. AAPS PharmSciTech 2015; 16:182-91. [PMID: 25245331 DOI: 10.1208/s12249-014-0209-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 08/25/2014] [Indexed: 11/30/2022] Open
Abstract
Mouth-dissolving fibers with antibacterial activity for the oral cavity were prepared by an electrospinning technique. Propolis extract was used as an active ingredient and polyvinylpyrrolidone (PVP) K90 as the polymer matrix. The morphology and diameter of the fibers were characterized by scanning electron microscopy. Antibacterial activity against Streptococcus mutans and the inhibition of S. mutans adhesion on a smooth glass surface during the biofilm formation were tested. Propolis, 5% (w/v), was combined with a PVP K90 solution, 8% (w/v), with or without Tween 80 including flavor additives and electrospun with an applied voltage of 15 kV. Uniform and smooth fibers of propolis-PVP K90 were obtained. The results showed that electrospun fibers with propolis extract can dissolve and release the propolis in water. Propolis-PVP electrospun fibers showed better antibacterial activity by reduction of bacteria adhesion on a smooth glass surface when compared to some commercial mouthwash products. These results indicated the potential of electrospun fibers to be used as mouth-dissolving fibers for effective antibacterial activity in the oral cavity.
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Vale GC, Cury AADB, Arthur RA, Cury JA, Tabchoury CPM. Recolonization of mutans Streptococci after application of chlorhexidine gel. Braz Dent J 2015; 25:485-8. [PMID: 25590193 DOI: 10.1590/0103-6440201300156] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 11/24/2014] [Indexed: 11/21/2022] Open
Abstract
Streptococcus mutans is specifically suppressed by intensive treatment with chlorhexidine gel, but the time for recolonization and the effect on other oral bacteria are not totally clear. In this study, recolonization of mutans streptococci was evaluated in nine healthy adult volunteers, who were highly colonized with this microorganism. Stimulated saliva was collected before (baseline) and at 1, 7, 14, 21 and 28 days after application of 1% chlorhexidine gel on volunteers' teeth for two consecutive days. On each day, the gel was applied using disposable trays for 3 x 5 min with intervals of 5 min between each application. Saliva was plated on blood agar to determine total microorganisms (TM); on mitis salivarius agar to determine total streptococci (TS) and on mitis salivarius agar plus bacitracin to determine mutans streptococci (MS). Chlorhexidine was capable of reducing the counts of MS and the proportion of MS with regard to total microorganisms (%MS/TM) (p<0.05), but these values did not differ statistically from baseline (p>0.05) after 14 days for MS and 21 days for %MS/TM. The counts of TM and TS and the proportion of MS to total streptococci did not differ statistically from baseline (p>0.05) after chlorhexidine treatment. The results suggest that the effect of chlorhexidine gel treatment on suppression of mutans streptococci is limited to less than a month in highly colonized individuals.
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Affiliation(s)
| | | | | | - Jaime Aparecido Cury
- Piracicaba Dental School, UNICAMP - University of Campinas, Piracicaba, SP, Brazil
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Bigucci F, Abruzzo A, Vitali B, Saladini B, Cerchiara T, Gallucci MC, Luppi B. Vaginal inserts based on chitosan and carboxymethylcellulose complexes for local delivery of chlorhexidine: Preparation, characterization and antimicrobial activity. Int J Pharm 2015; 478:456-63. [DOI: 10.1016/j.ijpharm.2014.12.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/01/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
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Paul S, Baranya Shrikrishna S, Suman E, Shenoy R, Rao A. Effect of fluoride varnish and chlorhexidine-thymol varnish on mutans streptococci levels in human dental plaque: a double-blinded randomized controlled trial. Int J Paediatr Dent 2014; 24:399-408. [PMID: 24372823 DOI: 10.1111/ipd.12085] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Recent systematic reviews on clinical trials comparing the efficacy of chlorhexidine and fluoride varnish found that the evidence was inconclusive and further well-conducted randomized controlled clinical trials were advocated. AIM To compare the effect of fluoride varnish (F) and Chlorhexidine-thymol varnish (CHX/T) with intensive application regimen on mutans streptococci (MS) levels in human dental plaque. DESIGN Seventy-five subjects between 6 and 10 years of age were allocated into three groups: Group 1-F varnish (n = 29); Group 2-CHX/T varnish(n = 29); Group 3-placebo varnish (n = 17) by stratified block randomization. After baseline plaque samples were obtained, varnish application was applied and repeated at an interval of 3 days in each group. Plaque samples were repeated at 48 h, 1 month, and 3 months. The samples were spread over mitis-salivarius-bacitracin (MSB) culture media, and the colony-forming units per ml (CFU) were measured. RESULTS In both Groups 1 and 2, Wilcoxon matched-pairs signed-rank test revealed significant differences in log CFU values of MS between baseline and 48 h, baseline and 1 month but no significant difference between baseline and 3 months. An intergroup comparison at different time intervals showed that the difference between three groups was statistically insignificant. CONCLUSION F varnish and CHX/T varnish, with an intensive regimen application have equivocal effect on MS levels in dental plaque.
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Affiliation(s)
- Sanchit Paul
- Department of Paedodontics and Preventive Dentistry, Manipal College of Dental Sciences, Manipal University, India
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Abouassi T, Hannig C, Mahncke K, Karygianni L, Wolkewitz M, Hellwig E, Al-Ahmad A. Does human saliva decrease the antimicrobial activity of chlorhexidine against oral bacteria? BMC Res Notes 2014; 7:711. [PMID: 25300308 PMCID: PMC4200226 DOI: 10.1186/1756-0500-7-711] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 10/02/2014] [Indexed: 11/20/2022] Open
Abstract
Background Several studies have shown the antibacterial effectiveness of 0.2% chlorhexidine (CHX) in both in vitro and in vivo studies. In this way, CHX comes directly in contact with saliva. This in vitro study aimed at investigating the possible neutralizing effect of saliva on CHX. Methods Saliva samples (12 ml) were collected from twenty healthy volunteers. The aerobic and anaerobic bacterial counts in saliva were determined on Colombia blood agar (CBA) and yeast cysteine agar (HCB), respectively. Saliva from each subject was divided among 4 experimental groups (3 ml/group). Samples were centrifuged at 4000 g for 10 min. The centrifuged salivary bacteria were incubated with the following solutions: 0.2% CHX in saliva, CHX in saliva with 7% ethanol, CHX in 0.9% NaCl, CHX in 0.9% NaCl with 7% ethanol. After exposure for 1 min or 3 min to these CHX solutions, the CHX was neutralized and the bacteria were cultivated, after which the number of colony forming units (aerobic and anaerobic) was determined. Results CHX reduced the CFU in all groups significantly (p = 0.0001). Therefore, CHX had a similar effect on both aerobic and anaerobic microorganisms. Significantly more bacteria survived the effect of CHX when kept in salivary solution. This effect from saliva could be compensated by the addition of ethanol. In the absence of saliva there was no significant difference observed in the effectiveness of CHX with respect to ethanol. Prolonging the exposure time to 3 min enhanced the effectiveness of CHX. Conclusions The effect of saliva on the antimicrobial activity of CHX was weak albeit statistically significant. However, addition of 7% ethanol compensates this effect. The impact of saliva on the reduction of the antimicrobial efficacy of mouthrinses such as CHX needs to be taken into consideration with regard to improving their antibacterial properties.
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Affiliation(s)
| | | | | | | | | | | | - Ali Al-Ahmad
- Department of Operative Dentistry and Periodontology, Albert Ludwigs University, Freiburg, Germany.
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Vieira DRP, Amaral FM, Maciel MCG, Nascimento FRF, Libério SA, Rodrigues VP. Plant species used in dental diseases: ethnopharmacology aspects and antimicrobial activity evaluation. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:1441-1449. [PMID: 25046828 DOI: 10.1016/j.jep.2014.07.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 07/08/2014] [Accepted: 07/11/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ethnopharmacological surveys show that several plant species are used empirically by the population, in oral diseases. However, it is necessary to check the properties of these plant species. AIM OF THE STUDY To evaluate in vitro antimicrobial activity against Streptococcus mutans from plant species selected in a previous ethnopharmacology study. MATERIALS AND METHODS An ethnopharmacological survey was conducted with users of a dental clinic school services, located in Sao Luis, Maranhão, Brazil, aiming to identify plant species used in oral diseases treatment. From the ethnopharmacological survey, species were selected for in vitro antimicrobial activity evaluation against Streptococcus mutans, by agar diffusion method and determination of Minimum Inhibitory Concentration (MIC). RESULTS Two hundred and seventy one people participated in the research: 55.7% reported the use of plants for medicinal purposes, 29.5% of which have knowledge and/or use plants for some type of oral disease. Thirty four species belonging to 24 (twenty four) botanical families were reported, being Aloe vera L., Anacardium occidentale L., Schinus terebinthifolius Raddi, Chenopodium ambrosioides L. and Punica granatum L. the most cited. The most commonly reported indications were healing after tooth extraction, followed by toothache, inflammation and bleeding gums., The determination of Minimum Inhibitory Concentration (MIC) demonstrated that Punica granatum L., Psidium guajava L. and Schinus terebinthifolius Raddi showed similar activity to 0.12% chlorhexidine, used as positive control. CONCLUSION That result is important to follow up the study of these species in the search for new anticariogenic agents originated by plants.
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Affiliation(s)
- Denise R P Vieira
- Federal University of Maranhão, Bacanga Campus, Portugueses Avenue, s/n, Odontology Building, 65085-580 São Luís, Maranhão, Brazil.
| | - Flavia MaM Amaral
- Federal University of Maranhão, Bacanga Campus, Portugueses Avenue, s/n, Pharmacy Building, 65085-580 São Luís, Maranhão, Brazil
| | - Márcia C G Maciel
- Federal University of Maranhão, Bacanga Campus, Portugueses Avenue, s/n, Immune Physiology Laboratory, 65085-580 São Luís, Maranhão, Brazil
| | - Flávia R F Nascimento
- Federal University of Maranhão, Bacanga Campus, Portugueses Avenue, s/n, Immune Physiology Laboratory, 65085-580 São Luís, Maranhão, Brazil
| | - Silvana A Libério
- Federal University of Maranhão, Bacanga Campus, Portugueses Avenue, s/n, Odontology Building, 65085-580 São Luís, Maranhão, Brazil
| | - Vandílson P Rodrigues
- Federal University of Maranhão, Bacanga Campus, Portugueses Avenue, s/n, Odontology Building, 65085-580 São Luís, Maranhão, Brazil
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Pedrazzi V, Escobar EC, Cortelli JR, Haas AN, Andrade AKPD, Pannuti CM, Almeida ERD, Costa FO, Cortelli SC, Rode SDM. Antimicrobial mouthrinse use as an adjunct method in peri-implant biofilm control. Braz Oral Res 2014; 28 Spec No:S1806-83242014000200301. [PMID: 25003787 DOI: 10.1590/1807-3107bor-2014.vol28.0022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 04/11/2014] [Indexed: 01/23/2023] Open
Abstract
Great possibilities for oral rehabilitation emerged as a result of scientific consolidation, as well as a large number of dental implant applications. Along with implants appeared diseases such as mucositis and peri-implantitis, requiring management through several strategies applied at different stages. Biofilm accumulation is associated with clinical signs manifest by both tooth and implant inflammation. With this in mind, regular and complete biofilm elimination becomes essential for disease prevention and host protection. Chemical control of biofilms, as an adjuvant to mechanical oral hygiene, is fully justified by its simplicity and efficacy proven by studies based on clinical evidence. The purpose of this review was to present a consensus regarding the importance of antimicrobial mouthrinse use as an auxiliary method in chemical peri-implant biofilm control. The active ingredients of the several available mouthrinses include bis-biguanide, essential oils, phenols, quaternary ammonium compounds, oxygenating compounds, chlorine derivatives, plant extracts, fluorides, antibiotics and antimicrobial agent combinations. It was concluded that there is strong clinical evidence that at least two mouthrinses have scientifically proven efficacy against different oral biofilms, i.e., chlorhexidine digluconate and essential oils; however, 0.12% chlorhexidine digluconate presents a number of unwanted side effects and should be prescribed with caution. Chemical agents seem beneficial in controlling peri-implant inflammation, although they require further investigation. We recommend a scientifically proven antiseptic, with significant short and long term efficacy and with no unwanted side effects, for the prevention and/or treatment of peri-implant disease.
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Affiliation(s)
- Vinicius Pedrazzi
- Department of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Elaine Cristina Escobar
- Periodontology Department, School of Dentistry, Faculdades Metropolitanas Unidas, São Paulo, SP, Brazil
| | - José Roberto Cortelli
- Periodontology Department, School of Dentistry, Universidade de Taubaté, Taubaté, SP, Brazil
| | - Alex Nogueira Haas
- Periodontology Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Rio Grande do Sul, RS, Brazil
| | | | - Claudio Mendes Pannuti
- Periodontology Department, School of Dentistry, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Eliete Rodrigues de Almeida
- Epidemiology and Pediatric Dentistry Department, School of Dentistry, Universidade Cruzeiro do Sul, São Paulo, SP, Brazil
| | - Fernando Oliveira Costa
- Periodontology Department, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Sheila Cavalca Cortelli
- Periodontology Department, School of Dentistry, Universidade de Taubaté, Taubaté, SP, Brazil
| | - Sigmar de Mello Rode
- Dental Materials and Prosthesis Department, Instituto de Ciência e Tecnologia, Univ Estadual Paulista, São José dos Campos, SP, Brazil
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Ros-Llor I, Lopez-Jornet P. Cytogenetic analysis of oral mucosa cells, induced by chlorhexidine, essential oils in ethanolic solution and triclosan mouthwashes. ENVIRONMENTAL RESEARCH 2014; 132:140-145. [PMID: 24769563 DOI: 10.1016/j.envres.2014.03.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/08/2014] [Accepted: 03/11/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVES The aim of this study was to evaluate DNA damage and cytokinetic defects, proliferative potential and cell death caused by the frequent use of mouthrinses containing chlorhexidine, triclosan and essential oils in ethanolic solution, compared to a placebo mouthwash. STUDY DESIGN This double-blind, prospective, randomized clinical trial included 80 Caucasian patients. Subjects were divided into four groups: Group I used a mouthrinse, Triclosan; Group II used physiological saline; Group III used chlorhexidine; Group IV a mouthrinse with essential oils in ethanolic solution. All subjects used the mouthrinses for two weeks (15 ml, twice a day, rinsing for 30s). Two cell samples per subject were collected, before and after mouthrinse use (on day 0 and day 15). Samples were processed as follows: cell collection from cheeks with a cytobrush; cell centrifuge; slide preparation, fixation and staining; and fluorescent microscope analysis. 2000 exfoliated cells were screened for nuclear abnormalities, particularly the presence of micronuclei by means of cytome assay. RESULTS No significant differences between study times (before and after use of mouthwash) were identified for any of the variables studied (p>0.05). Differences between mouthrinse groups were also compared but no significant differences were found (p>0.05). CONCLUSIONS This study did not observe any genotoxic effect resulting from mouthrinse use.
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Affiliation(s)
- Irene Ros-Llor
- Department of Oral Medicine, Faculty of Medicine and Dentistry. Ageing Research Institute, University of Murcia, Murcia, Spain
| | - Pia Lopez-Jornet
- Department of Oral Medicine, Faculty of Medicine and Dentistry. Ageing Research Institute, University of Murcia, Murcia, Spain.
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Gupta D, Bhaskar DJ, Gupta RK, Karim B, Jain A, Singh R, Karim W. A randomized controlled clinical trial of Ocimum sanctum and chlorhexidine mouthwash on dental plaque and gingival inflammation. J Ayurveda Integr Med 2014; 5:109-16. [PMID: 24948862 PMCID: PMC4061585 DOI: 10.4103/0975-9476.131727] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 08/04/2013] [Accepted: 09/05/2013] [Indexed: 11/05/2022] Open
Abstract
Background: Periodontal diseases are ubiquitous, affecting all dentate animals. Regular methods for controlling it have been found to be ineffective, which have paved the way for the use of herbal products as an adjunctive to mechanical therapy as they are free to untoward effects and hence can be used for a long period of time. Ocimum sanctum is a plant which has the greater medicinal value and enormous properties for curing and preventing disease. Objective: In the present study we assessed the effectiveness of Ocimum sanctum on dental plaque, gingival inflammation and comparison with gold standard chlorhexidine and normal saline (placebo). Materials and Methods: A triple blind randomized control trial was conducted among volunteered medical students. They were randomly allocated into three study groups: (1) Ocimum sanctum mouthwash (n = 36); (2) Chlorhexidine (active control) (n = 36); (3) normal saline (negative control) (n = 36). Assessment was carried out according to plaque score and gingival score. Statistical analysis was carried out later to compare the effect of both mouthwash. ANOVA (Analysis of variance) and post-hoc LSD tests were performed using software package used for statistical analysis (SPSS) version 17. P ≤0.05 was considered as statistically significant. Results: Our result showed that Ocimum sanctum mouthrinse is equally effective in reducing plaque and gingivitis as Chlorhexidine. The results demonstrated a significant reduction in gingival bleeding and plaque indices in both groups over a period of 15 and 30 days as compared to control group. Conclusion: The results of the present study indicate that Ocimum sanctum mouthrinse may prove to be an effective mouthwash owing to its ability in decreasing periodontal indices by reducing plaque accumulation, gingival inflammation and bleeding. It has no side effect as compared to chlorhexidine.
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Affiliation(s)
- Devanand Gupta
- Department of Public Health Dentistry, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Dara John Bhaskar
- Department of Public Health Dentistry, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | | | - Bushra Karim
- Department of Public Health Dentistry, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Ankita Jain
- Department of Public Health Dentistry, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Rajeshwar Singh
- Department of Orthodontics and Dentofacial Orthopaedics, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Wahaja Karim
- Department of Anesthesiology, Maulana Azad Medical College, New Delhi, India
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Johnson NR, Kazoullis A, Bobinskas AM, Jones L, Hutmacher DW, Lynham A. Bacterial comparison of preoperative rinsing and swabbing for oral surgery using 0.2% chlorhexidine. ACTA ACUST UNITED AC 2014; 6:193-6. [DOI: 10.1111/jicd.12099] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 02/15/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Nigel R. Johnson
- Department of Maxillofacial Surgery; Royal Brisbane and Women's Hospital; Brisbane Queensland Australia
| | - Andrea Kazoullis
- School Of Dentistry; University of Queensland; Brisbane Queensland Australia
| | - Alexander M. Bobinskas
- Department of Maxillofacial Surgery; Royal Melbourne Hospital; Melbourne Victoria Australia
| | - Lee Jones
- Queensland Institute of Medical Research; Brisbane Queensland Australia
| | - Dietmar W. Hutmacher
- Institute of Health and Biomedical Innovation; Queensland University of Technology; Brisbane Queensland Australia
| | - Anthony Lynham
- Department of Maxillofacial Surgery; Royal Brisbane and Women's Hospital; Brisbane Queensland Australia
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Kim HJ, Kwon TY, Kim KH, Kwon ST, Cho DH, Son JS. Long-term release of chlorhexidine from dental adhesive resin system using human serum albumin nanoparticles. Polym Bull (Berl) 2014. [DOI: 10.1007/s00289-014-1099-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chen Y, Wong RWK, Seneviratne CJ, Hagg U, McGrath C, Samaranayake LP. The effects of natural compounds-containing mouthrinses on patients with fixed orthodontic appliance treatment: clinical and microbiological outcomes. Int J Paediatr Dent 2013; 23:452-9. [PMID: 23278871 DOI: 10.1111/ipd.12018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AIM To investigate the effects of two natural compounds-containing mouthrinses (NCCMs) (a fructus mume (FM) extract-containing mouthrinse and an essential oil (EO)-containing mouthrinse) on gingival health and microbial profiles in young orthodontic patients. DESIGN This 6-month randomized, single-blinded, parallel-controlled clinical trial consists of 90 patients with fixed appliance treatment. The subjects were allocated to (1) negative control group: oral hygiene instruction (OHI) alone; (2) test group 1: OHI plus EO mouthrinse; and (3) test group 2: OHI plus FM mouthrinse. Clinical examinations included plaque index (PI), bleeding index (BI) and modified gingival index (MGI). Salivary microbial quantifications included total aerobic and anaerobic bacteria, Streptococci and Lactobacilli counts. Clinical and microbiological examinations were conducted at baseline, 3rd and 6th months (T1, T2, and T3). RESULTS BI was significantly reduced in both the FM mouthrinse and EO mouthrinse groups compared with the negative control group at T3 (P < 0.05). There were no significant intergroup differences in salivary bacteria counts in all groups (P > 0.05). CONCLUSION Both NCCMs effectively reduced gingival bleeding without causing significant alterations of microbial profile in young orthodontic patients.
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Affiliation(s)
- Yong Chen
- Discipline of Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
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Gupta D, Bhaskar DJ, Gupta RK, Karim B, Gupta V, Punia H, Batra M, Jain A, Agarwal A, Singh P. Effect ofTerminalia chebulaExtract and Chlorhexidine on Salivary pH and Periodontal Health: 2 Weeks Randomized Control Trial. Phytother Res 2013; 28:992-8. [DOI: 10.1002/ptr.5075] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 09/03/2013] [Accepted: 09/22/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Devanand Gupta
- Department of Public Health Dentistry; Teerthanker Mahaveer Dental College and Research Centre; Moradabad Uttar Pradesh India
| | - D. J. Bhaskar
- Department of Public Health Dentistry; Teerthanker Mahaveer Dental College and Research Centre; Moradabad Uttar Pradesh India
| | | | - Bushra Karim
- Department of Public Health Dentistry; Teerthanker Mahaveer Dental College and Research Centre; Moradabad Uttar Pradesh India
| | - Vipul Gupta
- Department of Public Health Dentistry; Teerthanker Mahaveer Dental College and Research Centre; Moradabad Uttar Pradesh India
| | - Himanshu Punia
- Department of Public Health Dentistry; Teerthanker Mahaveer Dental College and Research Centre; Moradabad Uttar Pradesh India
| | - Manu Batra
- Department of Public Health Dentistry; Teerthanker Mahaveer Dental College and Research Centre; Moradabad Uttar Pradesh India
| | - Ankita Jain
- Department of Public Health Dentistry; Teerthanker Mahaveer Dental College and Research Centre; Moradabad Uttar Pradesh India
| | - Amit Agarwal
- Department of O.M.F.S; Seema Dental College and Hospital; Rishikesh Uttrakhand India
| | - Pradeep Singh
- Department of Pharmacognosy; Teerthanker Mahaveer College of Pharmacy; Moradabad Uttar Pradesh India
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Besinis A, De Peralta T, Handy RD. Inhibition of biofilm formation and antibacterial properties of a silver nano-coating on human dentine. Nanotoxicology 2013; 8:745-54. [PMID: 23875717 DOI: 10.3109/17435390.2013.825343] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The survival of pathogenic bacteria in the oral cavity depends on their successful adhesion to dental surfaces and their ability to develop into biofilms, known as dental plaque. Bacteria from the dental plaque are responsible for the development of dental caries, gingivitis, periodontitis, stomatitis and peri-implantitis. Certain metal nanoparticles have been suggested for infection control and the management of the oral biofilm. Here, it is shown that application of a silver nano-coating directly on dentine can successfully prevent the biofilm formation on dentine surfaces as well as inhibit bacterial growth in the surrounding media. This silver nano-coating was found to be stable (>98.8%) and to maintain its integrity in biological fluids. Its antibacterial activity was compared to silver nitrate and the widely used clinical antiseptic, chlorhexidine. The bacterial growth and cell viability were quantitatively assessed by measuring the turbidity, proportion of live and dead cells and lactate production. All three bioassays showed that silver nanoparticles and silver nitrate dentine coatings were equally highly bactericidal (>99.5%), while inhibiting bacterial adhesion. However, the latter caused significant dentine discolouration (ΔE* = 50.3). The chlorhexidine coating showed no antibacterial effect. Thus, silver nanoparticles may be a viable alternative to both chlorhexidine and silver nitrate, protecting from dental plaque and secondary caries when applied as a dentine coating, while they may provide the platform for creating anti-biofilm surfaces in medical devices and other biomedical applications.
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Affiliation(s)
- Alexandros Besinis
- School of Biomedical and Biological Sciences, The University of Plymouth , Plymouth PL4 8AA , UK
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Rodríguez-Pérez M, Bravo-Pérez M, Sánchez-López JD, Muñoz-Soto E, Romero-Olid MN, Baca-García P. Effectiveness of 1% versus 0.2% chlorhexidine gels in reducing alveolar osteitis from mandibular third molar surgery: a randomized, double-blind clinical trial. Med Oral Patol Oral Cir Bucal 2013; 18:e693-700. [PMID: 23722126 PMCID: PMC3731100 DOI: 10.4317/medoral.18702] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 02/03/2013] [Indexed: 11/05/2022] Open
Abstract
Purpose: Alveolar osteitis (AO) is the most common postoperative complication of dental extractions. The purpose of this study was to compare the effectiveness of 1% versus 0.2% chlorhexidine (CHX) gel in reducing postoperative AO after surgical extraction of mandibular third molars, and assess the impact of treatment on the Oral HealthRelated Quality of Life (OHRQoL).
Material and Methods: This clinical study was a randomized, double-blind clinical trial. Eighty eight patients underwent surgical extraction of one retained mandibular third molar with the intra-alveolar application of 0.2% CHX gel. Afterwards, they were assigned to one of two groups: 1% CHX gel (n=42) or 0.2% CHX gel (n=46). The patients applied the gel twice a day to the wound for one week. All patients were evaluated for AO.
Results: In the 0.2% CHX gel group, 13% of AO incidence was found, while in the 1% CHX gel group, AO incidence was 7%, a difference that was not statistically significant. Variables such as sensation of pain and inflammation at baseline and during one week, as well as OHRQoL of the patients at 24 hours and 7 days post-extraction, gave no statistically significant differences.
Conclusions: There are no significant differences in AO after surgical extraction of mandibular third molars, when comparing applying 1% CHX gel twice a day for 7 days with 0.2% CHX gel.
Key words:Alveolar osteitis, chlorhexidine gel, third molar.
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Sajjan PG, Nagesh L, Sajjanar M, Reddy SKK, Venktesh UG. Comparative evaluation of chlorhexidine varnish and fluoride varnish on plaque Streptococcus mutans count--an in vivo study. Int J Dent Hyg 2013; 11:191-7. [PMID: 23721577 DOI: 10.1111/idh.12028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2013] [Indexed: 11/27/2022]
Abstract
AIM The aim of the study was to assess and compare the effect of chlorhexidine varnish and fluoride varnish application on Streptococcus mutans counts in plaque of occlusal pits and fissures of permanent mandibular first molars. MATERIALS AND METHODS The study was an in vivo comparative study, conducted among 50 schoolchildren aged 7-8 years under a field setting. The 50 subjects were randomly allocated into two groups. Baseline plaque samples were collected from all the subjects followed by the application of two varnishes, Cervitec and Duraphat. The varnish was applied to pit and fissures of occlusal surface of mandibular first molar. The varnish application was carried out on the first day, fifth day and tenth day after baseline plaque sampling. Subsequent plaque samples were collected at the end of 1 month and at the end of 3 months after the varnish application. RESULTS The Cervitec varnish has shown a statistically significant reduction at the end of 1 month and at the end of 3 months (P < 0.05). Duraphat varnish did not show a statistically significant difference in reducing the plaque S. mutans count at the end of 1 month and third month (P > 0.05). CONCLUSION Cervitec varnish was found to be effective in reducing S. mutans count for a 3-month period, when compared to Duraphat varnish.
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Affiliation(s)
- P G Sajjan
- Department of Public Health Dentistry, PMNM Dental College and Hospital, Bagalkot, India.
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Wikén Albertsson K, Persson A, van Dijken JWV. Effect of essential oils containing and alcohol-free chlorhexidine mouthrinses on cariogenic micro-organisms in human saliva. Acta Odontol Scand 2013; 71:883-91. [PMID: 23088552 DOI: 10.3109/00016357.2012.734414] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the effect on mutans streptococci and lactobacilli in saliva of mouthrinsing with essential oils and an alcohol-free chlorhexidine. MATERIALS AND METHOD Twenty healthy volunteers (mean age 59 years) participated in the double-blind randomized cross-over study. Three mouthrinses were used in 16 days rinsing periods in addition to their regular mechanical oral hygiene: a solution with essential oils (EO; Listerine), a solution with alcohol-free chlorhexidine (CHX; Paroex) and water (negative control). The mouthrinse periods were separated by 3-month washout periods. At days 0 (baseline) and 17 (end) of each mouthrinse period, paraffin stimulated whole saliva was collected in order to analyse CFU/ml saliva of mutans streptococci and lactobacilli. RESULTS Only the CHX rinse showed a significant difference for CFU mutans streptococci between baseline and end (p = 0.004). The CFU mutans streptococci at the end of the rinse periods showed statistically significant differences between CHX vs EO (p = 0.039) and CHX vs water (p = 0.022). The difference in CFU lactobacilli between baseline and end was significant for CHX (p = 0.031), but not for the other rinses. No statistically significant differences for lactobacilli were found at the end of the rinse periods between the mouthrinses. CONCLUSION A significant reduction in amount of cariogenic bacteria in saliva was observed after 16 days of alcohol-free chlorhexidine mouthrinse but not after the essential oils rinse. The high number of participant's not changing to a bacterial class with a reduced number of micro-organisms showed that both rinses had little clinical significance as a caries preventing treatment method, which can decrease the number of CFU cariogenic micro-organisms.
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Ruiz M, Baca P, Pardo-Ridao MDM, Arias-Moliz MT, Ferrer-Luque CM. Ex vivo study of bacterial coronal leakage in indirect pulp treatment. Med Oral Patol Oral Cir Bucal 2013; 18:e319-24. [PMID: 23229261 PMCID: PMC3613331 DOI: 10.4317/medoral.18425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 08/18/2012] [Indexed: 11/11/2022] Open
Abstract
Objective: The aim of this study was to evaluate, ex vivo, bacterial coronal leakage with different antimicrobial agents applied to the dentine for indirect pulp treatment (IPT).
Study Design: Sixty extracted teeth were prepared and randomly distributed into 5 groups (n=10): Group 1: no antimicrobial dentine treatment; group 2: 1% chlorhexidine (CHX)+1% thymol varnish (Cervitec®); group 3: 2 % CHX solution; group 4: 40% CHX varnish (EC40™) and group 5: Clearfil™ Protect Bond (CPB). Ten teeth served as controls. The teeth were restored using a resin-modified glass ionomer cement (GIC) and then mounted in a two-chamber device. The coronal access was exposed to Streptococcus mutans for 45 days. The appearance of turbidity in the BHI broth of the lower chamber was considered as specimen leakage.
Results: Survival analysis, determined by non parametric Kaplan-Meier and log-rank tests, showed that the best results were for groups EC40™+GIC and GIC alone; yet there were not statistically significant differences between them. All specimens of CPB+GIC and 2% CHX+GIC, leaked at 45 days.
Conclusions: In IPT the use of GIC without pretreatment of the dentine and pretreatment with 40% CHX varnish resulted in a significant delay of bacterial coronal leakage.
Key words:Streptococcus mutans, bacterial leakage, resin-modified glass ionomer cement, indirect pulp treatment.
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Affiliation(s)
- Matilde Ruiz
- Department of Paediatric Dentistry, School of Dentistry, University of Granada, Campus de Cartuja, Colegio Máximo s/n, Granada, Spain.
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Hannig C, Gaeding A, Basche S, Richter G, Helbig R, Hannig M. Effect of Conventional Mouthrinses on Initial Bioadhesion to Enamel and Dentin in situ. Caries Res 2013. [DOI: 10.1159/000345083] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Popelka A, Novák I, Lehocký M, Chodák I, Sedliačik J, Gajtanska M, Sedliačiková M, Vesel A, Junkar I, Kleinová A, Špírková M, Bílek F. Anti-bacterial treatment of polyethylene by cold plasma for medical purposes. Molecules 2012; 17:762-85. [PMID: 22245943 PMCID: PMC6268539 DOI: 10.3390/molecules17010762] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 01/09/2012] [Accepted: 01/10/2012] [Indexed: 11/16/2022] Open
Abstract
Polyethylene (PE) is one of the most widely used polymers in many industrial applications. Biomedical uses seem to be attractive, with increasing interest. However, PE it prone to infections and its additional surface treatment is indispensable. An increase in resistance to infections can be achieved by treating PE surfaces with substances containing antibacterial groups such as triclosan (5-Chloro-2-(2,4-dichlorophenoxy)phenol) and chlorhexidine (1,1'-Hexamethylenebis[5-(4-chlorophenyl)biguanide]). This work has examined the impact of selected antibacterial substances immobilized on low-density polyethylene (LDPE) via polyacrylic acid (PAA) grafted on LDPE by low-temperature barrier discharge plasma. This LDPE surface treatment led to inhibition of Escherichia coli and Staphylococcus aureus adhesion; the first causes intestinal disease, peritonitis, mastitis, pneumonia, septicemia, the latter is the reason for wound and urinary tract infections.
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Affiliation(s)
- Anton Popelka
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava 45, Slovakia
| | - Igor Novák
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava 45, Slovakia
- Author to whom correspondence should be addressed; ; Tel.: +421-903-925-725
| | - Marián Lehocký
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Nad Ovčírnou 3685, 760 01 Zlín, Czech Republic
| | - Ivan Chodák
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava 45, Slovakia
| | - Ján Sedliačik
- Faculty of Wood Sciences and Technology, Technical University in Zvolen, T.G. Masaryka 2117/24, 960 53 Zvolen, Slovakia
| | - Milada Gajtanska
- Faculty of Wood Sciences and Technology, Technical University in Zvolen, T.G. Masaryka 2117/24, 960 53 Zvolen, Slovakia
| | - Mariana Sedliačiková
- Faculty of Wood Sciences and Technology, Technical University in Zvolen, T.G. Masaryka 2117/24, 960 53 Zvolen, Slovakia
| | - Alenka Vesel
- Plasma Laboratory, Department of Surface Engineering, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Ita Junkar
- Plasma Laboratory, Department of Surface Engineering, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Angela Kleinová
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava 45, Slovakia
| | - Milena Špírková
- Institute of Macromolecular Chemistry AS CR, v. v. i, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - František Bílek
- Polymer Centre, Faculty of Technology, Tomas Bata University in Zlín, T.G.M Sq. 275, 762 72 Zlín, Czech Republic
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