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Hotic M, Ackermann M, Bopp J, Hofmann N, Karygianni L, Paqué PN. Critical hydrodynamic force levels for efficient removal of oral biofilms in simulated interdental spaces. Clin Oral Investig 2024; 28:346. [PMID: 38819592 PMCID: PMC11142948 DOI: 10.1007/s00784-024-05739-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 05/23/2024] [Indexed: 06/01/2024]
Abstract
OBJECTIVES Sonic toothbrushes generate hydrodynamic shear forces for oral biofilm removal on tooth surfaces, but the effective thresholds for biofilm removal remain unexplored. This in vitro study aimed to investigate various threshold values for hydrodynamic biofilm removal in vitro. MATERIALS AND METHODS A specialized test bench was designed with a known water flow field within a gap, ensuring that hydrodynamic shear forces on the wall were solely dependent on the volume flow, which was quantifiable using an integrated flow meter and proven by a computational fluid dynamics simulation. A young 20 h supragingival six-species biofilm was developed on hydroxyapatite disks (∅ 5 mm) and applied into the test bench, subjecting them to ascending force levels ranging from 0 to 135 Pa. The remaining biofilms were quantified using colony forming units (CFU) and subjected to statistical analysis through one-way ANOVA. RESULTS Volume flow measures < 0.1 l/s: Error 1% of reading were established with the test bench. Untreated biofilms (0 Pa, no hydrodynamic shear forces) reached 7.7E7 CFU/harvest and differed significantly from all treated biofilm groups. CFU reductions of up to 2.3E6 were detected using 20 Pa, and reductions of two orders of magnitude were reached above wall shear forces of 45 Pa (6.9E5). CONCLUSIONS Critical hydrodynamic force levels of at least 20 Pa appear to be necessary to have a discernible impact on initial biofilm removal. CLINICAL RELEVANCE Pure hydrodynamic forces alone are insufficient for adequate biofilm removal. The addition of antiseptics is essential to penetrate and disrupt hydrodynamically loosened biofilm structures effectively.
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Affiliation(s)
- Merima Hotic
- School of Engineering, Institute of Thermal and Fluid Engineering, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland
| | - Mario Ackermann
- School of Engineering, Institute of Thermal and Fluid Engineering, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland
| | - Joshua Bopp
- University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland
| | - Norbert Hofmann
- School of Engineering, Institute of Thermal and Fluid Engineering, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland
| | - Lamprini Karygianni
- Center for Dental Medicine, University of Zurich, Clinic for Conservative and Preventive Dentistry, Zurich, Switzerland
| | - Pune Nina Paqué
- Center for Dental Medicine, University of Zurich, Clinic for Reconstructive Dentistry, Plattenstrasse 11, Zurich, CH-8032, Switzerland.
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Orilisi G, Vitiello F, Notarstefano V, Furlani M, Riberti N, Monterubbianesi R, Bellezze T, Campus G, Carrouel F, Orsini G, Putignano A. Multidisciplinary evaluation of the remineralization potential of three fluoride-based toothpastes on natural white spot lesions. Clin Oral Investig 2023; 27:7451-7462. [PMID: 37857734 PMCID: PMC10713761 DOI: 10.1007/s00784-023-05334-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/11/2023] [Indexed: 10/21/2023]
Abstract
OBJECTIVES This in vitro study aimed assessing the remineralization potential of three commercial fluoride-based toothpastes in permanent teeth with natural white spot lesions (WSLs). A multidisciplinary approach based on Raman microspectroscopy (RMS), Scanning electron microscopy (SEM), Energy-dispersive x-ray spectroscopy (EDS), and Vickers microhardness (VMH) was exploited. METHODS N = 12 human molars with natural WSLs in the proximal-vestibular zone were selected and divided into 4 groups (n = 3) according to the different treatments: HAF (hydroxyapatite with fluoride ions); SMF (sodium monofluorophosphate with arginine); SF (sodium fluoride with enzymes), and CTRL (untreated group). All toothpastes tested contained 1450 ppm of fluoride. Teeth samples were submitted to the following protocol: a 7-day pH cycling treatment, with two daily exposures (2 min each time) to the commercial toothpastes described above. The surface micromorphology (SEM), the chemical/elemental composition (RMS and EDS), and the Vickers microhardness (VMH) were evaluated. Statistical analysis was performed. RESULTS A remarkable remineralization of WSLs in SEM images was observed in all treated groups compared to CTRL. In particular, HAF and SF displayed higher values of VMH, phosphates amount (I960), crystallinity (FWHM960), and lower ones of C/P (I1070/I960) with respect to CTRL. Intermediate values were found in SMF, higher than CTRL but lower with respect to HAF and SF. As regards the Ca/P ratio, statistically significant differences (p < 0.05) were found between SF and the other groups. CONCLUSIONS All the tested dentifrices have shown to remineralize the WSLs. SF and HAF have comparable capability in hardness recovery and crystallinity; however, SF shows the best remineralizing potential according to both micromorphological and chemical analyses. Clinical relevance The daily use of toothpastes containing hydroxyapatite partially replaced with fluoride, sodium monofluorophosphate with arginine and sodium fluoride toothpaste associated with enzymes represents a preventive, therapeutic, effective, and non-invasive tool for remineralize WSLs.
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Affiliation(s)
- Giulia Orilisi
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
| | - Flavia Vitiello
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
- Health, Systemic, Process (P2S), Research Unit UR 4129, University Claude Bernard Lyon 1, University of Lyon, 69008, Lyon, France
| | - Valentina Notarstefano
- Department of Life and Environmental Sciences, Università Politecnica Delle Marche (DISVA), 60131, Ancona, Italy
| | - Michele Furlani
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
| | - Nicole Riberti
- Department of Neurosciences Imaging and Clinical Sciences (DNISC), University of Chieti-Pescara, 66100, Chieti, Italy
| | - Riccardo Monterubbianesi
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
| | - Tiziano Bellezze
- Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Università Politecnica Delle Marche, 60131, Ancona, Italy
| | - Guglielmo Campus
- Department of Surgery, Microsurgery and Medicine Sciences, School of Dentistry, University of Sassari, 07100, Sassari, Italy
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, CH-3010, Bern, Switzerland
| | - Florence Carrouel
- Health, Systemic, Process (P2S), Research Unit UR 4129, University Claude Bernard Lyon 1, University of Lyon, 69008, Lyon, France
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy.
| | - Angelo Putignano
- Department of Clinical Sciences and Stomatology (DISCO), Università Politecnica Delle Marche, 60126, Ancona, Italy
- National Institute of Health and Science of Aging (INRCA), 60124, Ancona, Italy
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Kumar V, Mangla B, Javed S, Ahsan W, Kumar P, Garg V, Dureja H. Bromelain: a review of its mechanisms, pharmacological effects and potential applications. Food Funct 2023; 14:8101-8128. [PMID: 37650738 DOI: 10.1039/d3fo01060k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The utilization of plant-derived supplements for disease prevention and treatment has long been recognized because of their remarkable potential. Ananas comosus, commonly known as pineapple, produces a group of enzymes called bromelain, which contains sulfhydryl moieties. Recent studies have shown that bromelain exhibits a wide range of activities, including anti-inflammatory, anti-diabetic, anti-cancer, and anti-rheumatic properties. These properties make bromelain a promising drug candidate for the treatment of various diseases. The anti-inflammatory activity of bromelain has been shown to be useful in treating inflammatory conditions such as osteoarthritis, rheumatoid arthritis, and asthma, whereas the anti-cancer activity of bromelain is via induction of apoptosis, inhibition of angiogenesis, and enhancement of the body's immune response. The anti-diabetic property of bromelain is owing to the improvement in glucose metabolism and reduction in insulin resistance. The therapeutic potential of bromelain has been investigated in numerous preclinical and clinical studies and a number of patents have been granted to date. Various formulations and delivery systems are being developed in order to improve the efficacy and safety of this molecule, including the microencapsulated form to treat oral inflammatory conditions and liposomal formulations to treat cancer. The development of novel drug delivery systems and formulations has further ameliorated the therapeutic potential of bromelain by improving its bioavailability and stability, while reducing the side effects. This review intends to discuss various properties and therapeutic applications of bromelain, along with its possible mechanism of action in treating various diseases. Recent patents and clinical trials concerning bromelain have also been covered.
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Affiliation(s)
- Virender Kumar
- Department of Pharmaceutical Sciences, M.D. University, Rohtak, Haryana-124001, India.
- College of Pharmacy, Pandit Bhagwat Dayal Sharma University of Health Sciences, Rohtak, Haryana-124001, India
| | - Bharti Mangla
- Centre for Advanced Formulation and Technology, Delhi Pharmaceutical Sciences and Research University, New Delhi-110017, India.
| | - Shamama Javed
- Department of Pharmaceutics, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
| | - Waquar Ahsan
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
| | - Pankaj Kumar
- Centre for Advanced Formulation and Technology, Delhi Pharmaceutical Sciences and Research University, New Delhi-110017, India.
| | - Vandana Garg
- Department of Pharmaceutical Sciences, M.D. University, Rohtak, Haryana-124001, India.
| | - Harish Dureja
- Department of Pharmaceutical Sciences, M.D. University, Rohtak, Haryana-124001, India.
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Antibacterial and Antibiofilm Effect of Honey in the Prevention of Dental Caries: A Recent Perspective. Foods 2022; 11:foods11172670. [PMID: 36076855 PMCID: PMC9455747 DOI: 10.3390/foods11172670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/30/2022] [Accepted: 09/01/2022] [Indexed: 12/14/2022] Open
Abstract
The successful application of honey in wound care management has been achieved due to honey’s potent antibacterial effects, characterised by its multifactorial action. Impressive clinical efficacy has ignited its further use in diverse clinical disciplines, including stomatology. Indeed, there is increasing usage of honey in dental medicine as a preventive or therapeutic remedy for some periodontal diseases mainly associated with bacteria, such as dental caries, gingivitis and mucositides. Dental caries is undoubtedly a major oral health problem worldwide, with an increasing tendency of incidence. The purpose of this perspective review is to describe the recent progress in the laboratory and clinical use of honey in the prevention of dental caries, with emphasis on the antibacterial and antibiofilm effects of honey. The role of honey in the cariogenic process is also discussed. In addition, the quality of honey and the urgent in vitro evaluation of its antibacterial/antibiofilm properties before clinical use are highlighted. Findings based on data extracted from laboratory studies demonstrate the pronounced antibacterial effect of different honeys against a number of periodontal pathogens, including Streptococcus mutans. Although the promising antibiofilm effects of honey have been reported mainly against S. mutans, these results are limited to very few studies. From a clinical point of view, honey significantly reduces dental plaque; however, it is not superior to the conventional agent. Despite the positive in vitro results, the clinical effectiveness of honey in the prevention of dental caries remains inconclusive since further robust clinical studies are needed.
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