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Schestakow A, Echterhoff B, Hannig M. Erosion protective properties of the enamel pellicle in-situ. J Dent 2024; 147:105103. [PMID: 38815730 DOI: 10.1016/j.jdent.2024.105103] [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: 04/29/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024] Open
Abstract
OBJECTIVES Previous studies on short- and long-term pellicles showed that the enamel pellicle provides partial protection against erosion. The aim of the present study was to investigate the protective properties of clinically relevant pellicles formed within 2 to 24 h. The hypothesis was that factors such as pellicle formation time, intraoral location, and acidic challenge severity would not influence the erosion-protective properties of the pellicle. METHODS Six subjects participated in the study. Bovine enamel specimens were prepared and intraorally exposed at buccal or palatal sites for 2, 6, 12, and 24 h to allow pellicle formation, followed by erosion using 0.1 % or 1 % citric acid. Calcium release and surface microhardness were measured, and specimens were analysed using scanning and transmission electron microscopy. Quantitative data were statistically analysed with three-way ANOVA and Tuckey's multiple comparison test (p = 0.05). RESULTS Pellicle formation time and intraoral location did not significantly influence the erosion-protective properties of the pellicle, while citric acid concentration significantly affected enamel erosion. The pellicle thickness increased with longer formation times and on buccal sites, but decreased or was entirely removed following treatment with 0.1 % or 1 % citric acid, respectively. The enamel surface exhibited a characteristic erosion pattern. CONCLUSIONS This study underscores the importance of investigating pellicle properties within the critical 2- to 24-h timeframe and highlights the significance of pellicle thickness in acid resistance. CLINICAL SIGNIFICANCE These findings provide valuable insights into the factors influencing the protective properties of enamel pellicles and could guide preventive measures in dental practice.
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Affiliation(s)
- Anton Schestakow
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg/Saar, Germany.
| | - Björn Echterhoff
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg/Saar, Germany
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg/Saar, Germany
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Nobrega C, Nunes GP, de Paiva Buischi Y, Kajimoto NDC, Delbem ACB. In vitro assessment of dental erosion caused by clear aligners. J Mech Behav Biomed Mater 2024; 152:106390. [PMID: 38277909 DOI: 10.1016/j.jmbbm.2024.106390] [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: 10/15/2023] [Revised: 01/05/2024] [Accepted: 01/07/2024] [Indexed: 01/28/2024]
Abstract
The primary objective of this in vitro study was to investigate the erosive potential of enamel under the use of clear aligners (CA), by simulating in vivo conditions experienced by patients who do not remove their CA during the consumption of acidic beverages. In addition, the difference in erosion protection conferred by artificial and human saliva was also evaluated. Sound-extracted human premolars (n = 20) had half of their surfaces protected with acid-resistant nail polish and were randomly distributed into two experimental groups (n = 10): teeth immersed in human saliva or artificial saliva. All teeth had half of their lingual surfaces enclosed by a CA device. The erosive challenges consisted of individual immersion of each sample in citrus acid three times a day, intermediated by immersion in human saliva or artificial saliva for 2 h, during ten days of the erosive protocol. The enamel mineral content was analyzed by high-resolution microtomography. The differential mineral concentration profiles were obtained by subtracting the profile of the mineral concentration of the exposed area and enamel under the CA area from the respective sound area (control). In addition, enamel wear and enamel volume loss were measured. Scanning electron microscopy (SEM) was also performed to analyze the enamel surface. Data were analyzed by two-way ANOVA, followed by the Student-Newman-Keuls test. The enamel wear was higher in teeth immersed in artificial saliva, when compared to human saliva (p < 0.001). The volume loss of the exposed enamel area was lower for tooth immersed in human saliva than in artificial saliva (p < 0.001), during the acid challenge protocol. The use of CA during acid challenges promoted wear and mineral loss of dental enamel, being these changes more pronounced on the enamel surface under the CA. These results open a new path for the development of further studies adopting clinical protocols that promote more accurate responses in the clinical practice during orthodontic treatment.
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Affiliation(s)
- Celestino Nobrega
- Department of Orthodontics, Case Western Reserve University, Cleveland, OH, United States.
| | - Gabriel Pereira Nunes
- Department of Preventive and Restorative Dentistry, São Paulo State University, Araçatuba, São Paulo, Brazil
| | - Yvonne de Paiva Buischi
- Department of Periodontics, The University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Natália de Campos Kajimoto
- Department of Periodontics, The University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
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Enax J, Ganss B, Amaechi BT, Schulze zur Wiesche E, Meyer F. The composition of the dental pellicle: an updated literature review. FRONTIERS IN ORAL HEALTH 2023; 4:1260442. [PMID: 37899941 PMCID: PMC10600522 DOI: 10.3389/froh.2023.1260442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/26/2023] [Indexed: 10/31/2023] Open
Abstract
Background The dental pellicle is a thin layer of up to several hundred nm in thickness, covering the tooth surface. It is known to protect the teeth from acid attacks through its selective permeability and it is involved in the remineralization process of the teeth. It functions also as binding site and source of nutrients for bacteria and conditioning biofilm (foundation) for dental plaque formation. Methods For this updated literature review, the PubMed database was searched for the dental pellicle and its composition. Results The dental pellicle has been analyzed in the past years with various state-of-the art analytic techniques such as high-resolution microscopic techniques (e.g., scanning electron microscopy, atomic force microscopy), spectrophotometry, mass spectrometry, affinity chromatography, enzyme-linked immunosorbent assays (ELISA), and blotting-techniques (e.g., western blot). It consists of several different amino acids, proteins, and proteolytic protein fragments. Some studies also investigated other compounds of the pellicle, mainly fatty acids, and carbohydrates. Conclusions The dental pellicle is composed mainly of different proteins, but also fatty acids, and carbohydrates. Analysis with state-of-the-art analytical techniques have uncovered mainly acidic proline-rich proteins, amylase, cystatin, immunoglobulins, lysozyme, and mucins as main proteins of the dental pellicle. The pellicle has protective properties for the teeth. Further research is necessary to gain more knowledge about the role of the pellicle in the tooth remineralization process.
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Affiliation(s)
- Joachim Enax
- Research Department, Dr. Kurt Wolff GmbH & Co. KG, Bielefeld, Germany
| | - Bernhard Ganss
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
| | - Bennett T. Amaechi
- Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, San Antonio, TX, United States
| | | | - Frederic Meyer
- Research Department, Dr. Kurt Wolff GmbH & Co. KG, Bielefeld, Germany
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New insights into the protective effect of statherin-derived peptide for different acquired enamel pellicle formation times on the native human enamel surfaces. Arch Oral Biol 2023; 148:105643. [PMID: 36773559 DOI: 10.1016/j.archoralbio.2023.105643] [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: 11/28/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/05/2023]
Abstract
OBJECTIVES This study evaluated the protective impact of acquired enamel pellicle (AEP) engineering with statherin-derived peptide (StatpSpS), considering different AEP formation times. DESIGN A total of 120 native human enamel specimens were divided into 2 main groups: 1) No AEP engineering and 2) AEP engineering with StatpSpS (pretreatment for 1 min; 37 °C, under agitation). Each group was further divided into 4 subgroups: No pellicle, or 1, 60-and-120 min AEP formation times (human saliva; 37 °C). The specimens were then subjected to an erosive challenge (1% citric acid; pH 3.6; 1 min; 25 °C). This procedure was repeated for 5 cycles. Relative surface reflection intensity (%SRI) was measured and scanning electron microscopy (SEM) of the enamel surface was done. RESULTS All AEP engineering groups protected against initial dental erosion in comparison with No pellicle (p < 0.001), likewise all groups with AEP, independent of engineering or formation times (p 0.001). Furthermore, engineering with StatpSpS even without the presence of AEP protected the enamel when compared to the No engineering/No pellicle group (p < 0.0001). No difference was observed regarding the protection from the different AEP formation times (p > 0.05). Regarding the SEM analysis, in the "No AEP engineering & No AEP" group, a more severe effect of citric acid was observed, with more enamel prism heads and scratches on the surface when compared with the other groups. CONCLUSIONS AEP provides almost instant protection at formation times even as short as 1 min, protecting the native enamel against erosion. Treatment with StatpSpS by itself provides similar protection as the AEP.
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Flemming J, Hannig C, Hannig M. Caries Management-The Role of Surface Interactions in De- and Remineralization-Processes. J Clin Med 2022; 11:jcm11237044. [PMID: 36498618 PMCID: PMC9737279 DOI: 10.3390/jcm11237044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Bioadhesion and surface interactions on enamel are of essential relevance for initiation, progression and prevention of caries and erosions. Salivary proteins on and within initial carious and erosive lesions can facilitate or aggravate de- and remineralization. This applies for the pellicle layer, the subsurface pellicle and for proteins within initial carious lesions. Little is known about these proteinaceous structures related to initial caries and erosion. Accordingly, there is a considerable demand for an understanding of the underlying processes occurring at the interface between the tooth surface and the oral cavity in order to develop novel agents that limit and modulate caries and erosion. Objectives and findings: The present paper depicts the current knowledge of the processes occurring at the interface of the tooth surface and the oral fluids. Proteinaceous layers on dental hard tissues can prevent or aggravate demineralization processes, whereas proteins within initial erosive or carious lesions might hinder remineralization considerably and restrict the entry of ions into lesions. CONCLUSIONS Despite the fact that organic-inorganic surface interactions are of essential relevance for de- and remineralization processes at the tooth surface, there is limited knowledge on these clinically relevant phenomena. Accordingly, intensive research is necessary to develop new approaches in preventive dentistry.
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Affiliation(s)
- Jasmin Flemming
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307 Dresden, Germany
- Correspondence:
| | - Christian Hannig
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307 Dresden, Germany
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, D-66424 Homburg, Germany
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Łysik D, Deptuła P, Chmielewska S, Bucki R, Mystkowska J. Degradation of Polylactide and Polycaprolactone as a Result of Biofilm Formation Assessed under Experimental Conditions Simulating the Oral Cavity Environment. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7061. [PMID: 36295125 PMCID: PMC9604997 DOI: 10.3390/ma15207061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/08/2022] [Accepted: 10/09/2022] [Indexed: 06/16/2023]
Abstract
Polylactide (PLA) and polycaprolactone (PCL) are biodegradable and bioabsorbable thermoplastic polymers considered as promising materials for oral applications. However, any abiotic surface used, especially in areas naturally colonized by microorganisms, provides a favorable interface for microbial growth and biofilm development. In this study, we investigated the biofilm formation of C. krusei and S. mutans on the surface of PLA and PCL immersed in the artificial saliva. Using microscopic (AFM, CLSM) observations and spectrometric measurements, we assessed the mass and topography of biofilm that developed on PLA and PCL surfaces. Incubated up to 56 days in specially prepared saliva and microorganisms medium, solid polymer samples were examined for surface properties (wettability, roughness, elastic modulus of the surface layer), structure (molecular weight, crystallinity), and mechanical properties (hardness, tensile strength). It has been shown that biofilm, especially S. mutans, promotes polymer degradation. Our findings indicate the need for additional antimicrobial strategies for the effective oral applications of PLA and PCL.
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Affiliation(s)
- Dawid Łysik
- Institute of Biomedical Engineering, Bialystok University of Technology, 15-351 Bialystok, Poland
| | - Piotr Deptuła
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, 15-222 Bialystok, Poland
| | - Sylwia Chmielewska
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, 15-222 Bialystok, Poland
| | - Robert Bucki
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, 15-222 Bialystok, Poland
| | - Joanna Mystkowska
- Institute of Biomedical Engineering, Bialystok University of Technology, 15-351 Bialystok, Poland
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Aljulayfi I, O'Toole S, Healy M, Sumaidaa S, Ali Z, Bartlett D, Austin R. The interplay of saliva, erosion and attrition on enamel and dentine. Saudi Dent J 2022; 34:232-236. [PMID: 35935719 PMCID: PMC9346941 DOI: 10.1016/j.sdentj.2022.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 01/07/2022] [Accepted: 01/25/2022] [Indexed: 11/17/2022] Open
Abstract
Purpose This investigation aimed to compare the protective role of saliva against erosion and attrition challenges. Method Polished enamel and dentine samples (n = 160) were prepared and randomly assigned to either the saliva or saliva-free group (n = 40 enamel and n = 40 dentine/group). Within each subgroup, they were allocated to four subgroups: negative control (deionized water exposure 10 min), erosion (0.3% citric acid 10 min), attrition (120 S of 300 g force), or combined erosion/attrition (0.3% citric acid 10 min then 120 S of 300 g force). Experimental cycles were repeated three times. Data analysis was performed using SPSS. Results The mean and standard deviation (SD) of step heights produced by the attrition and erosion/attrition groups in enamel in the saliva-free group were 5.6 µm (2.4) and 13.4 µm (2.8), respectively, while they were 2.4 µm (3.8) and 12.9 µm (3.5) in the saliva group, with no significant difference between the saliva and saliva-free groups. For dentine, the corresponding step heights were 25.2 µm (5.5) and 35.9 µm (7.9) for the saliva-free group, but 21.8 µm (5.3) and 27.3 µm (6.4) for the saliva group (p < 0.001). Conclusion There was a trend that saliva decreased wear, but this was only statistically significant for erosion/attrition dentine wear.
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Affiliation(s)
- I. Aljulayfi
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
- Prince Sattam bin Abdulaziz University, College of Dentistry, Alkharj, Saudi Arabia
- Corresponding author at: Prince Sattam bin Abdulaziz University, College of Dentistry, Alkharj, 16245, Saudi Arabia.
| | - S. O'Toole
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - M. Healy
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - S. Sumaidaa
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - Z. Ali
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - D. Bartlett
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - R. Austin
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
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Nekrashevych Y, Schestakow A, Hoth-Hannig W, Hannig M. Influence of periodic milk or cream treatment on the anti-erosive potential of the acquired enamel pellicle. J Dent 2021; 115:103858. [PMID: 34710546 DOI: 10.1016/j.jdent.2021.103858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/03/2021] [Accepted: 10/21/2021] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE The purpose of the present study was to assess the anti-erosive potential of the acquired enamel pellicle formed in situ under the influence of periodic milk or cream treatment. METHODS The pellicle was formed on bovine enamel specimens in the oral cavity at buccal and palatal sites of upper molars in 6 subjects, using removable acrylic splints. During 6-h of intraoral exposure, splints were removed from the oral cavity every 25 min, treated with milk or cream for 5 min, and subsequently re-inserted into the oral cavity. After 6 h, pellicle covered specimens were immersed in citric acid (0.1 or 1.0 %) for 1 min, and processed for measurement of surface microhardness, determination of calcium release by atomic absorption spectroscopy, scanning and transmission electron microscopy. Statistical analysis was performed with SAS. RESULTS Statistical analysis did not indicate major differences between erosive surface alterations on enamel specimens covered by pellicles treated with cream or milk, and those covered by control pellicles. In addition, TEM analysis did not reveal any differences concerning the ultrastructure of the different pellicle treatments during acid exposure. All pellicles were dissolved in part after exposure to 0.1 % citric acid and were nearly completely removed after treatment with 1.0% citric acid. CONCLUSIONS It is concluded that periodic treatment with milk or cream during pellicle formation in situ does not improve the protective potential of the acquired enamel pellicle against erosion. CLINICAL SIGNIFICANCE Modification of the pellicle by consumption of milk or cream prior to an acidic challenge cannot sufficiently protect enamel from erosion.
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Affiliation(s)
- Yuriy Nekrashevych
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Saar, Germany.
| | - Anton Schestakow
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Saar, Germany.
| | - Wiebke Hoth-Hannig
- Technical Staff, Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Saar.
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Saar, Germany.
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Zhang F, Cheng Z, Ding C, Li J. Functional biomedical materials derived from proteins in the acquired salivary pellicle. J Mater Chem B 2021; 9:6507-6520. [PMID: 34304263 DOI: 10.1039/d1tb01121a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In the oral environment, the acquired salivary pellicle (ASP) on the tooth surface comprises proteins, glycoproteins, carbohydrates, and lipids. The ASP can specifically and rapidly adsorb on the enamel surface to provide effective lubrication, protection, hydration, and remineralisation, as well as be recognised by various bacteria to form a microbial biofilm (plaque). The involved proteins, particularly various phosphoproteins such as statherins, histatins, and proline-rich proteins, are vital to their specific functions. This review first describes the relationship between the biological functions of these proteins and their structures. Subsequently, recent advances in functional biomedical materials derived from these proteins are reviewed in terms of dental/bone therapeutic materials, antibacterial materials, tissue engineering materials, and coatings for medical devices. Finally, perspectives and challenges regarding the rational design and biomedical applications of ASP-derived materials are discussed.
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Affiliation(s)
- Fan Zhang
- Physical Examination Center, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
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10
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Flemming J, Meyer-Probst CT, Speer K, Kölling-Speer I, Hannig C, Hannig M. Preventive Applications of Polyphenols in Dentistry-A Review. Int J Mol Sci 2021; 22:4892. [PMID: 34063086 PMCID: PMC8124254 DOI: 10.3390/ijms22094892] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/27/2021] [Accepted: 04/27/2021] [Indexed: 01/18/2023] Open
Abstract
Polyphenols are natural substances that have been shown to provide various health benefits. Antioxidant, anti-inflammatory, and anti-carcinogenic effects have been described. At the same time, they inhibit the actions of bacteria, viruses, and fungi. Thus, studies have also examined their effects within the oral cavity. This review provides an overview on the different polyphenols, and their structure and interactions with the tooth surface and the pellicle. In particular, the effects of various tea polyphenols on bioadhesion and erosion have been reviewed. The current research confirms that polyphenols can reduce the growth of cariogenic bacteria. Furthermore, they can decrease the adherence of bacteria to the tooth surface and improve the erosion-protective properties of the acquired enamel pellicle. Tea polyphenols, especially, have the potential to contribute to an oral health-related diet. However, in vitro studies have mainly been conducted. In situ studies and clinical studies need to be extended and supplemented in order to significantly contribute to additive prevention measures in caries prophylaxis.
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Affiliation(s)
- Jasmin Flemming
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307 Dresden, Germany; (J.F.); (C.H.)
| | - Clara Theres Meyer-Probst
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307 Dresden, Germany; (J.F.); (C.H.)
| | - Karl Speer
- Special Food Chemistry and Food Production, TU Dresden, Bergstraße 66, D-01069 Dresden, Germany; (K.S.); (I.K.-S.)
| | - Isabelle Kölling-Speer
- Special Food Chemistry and Food Production, TU Dresden, Bergstraße 66, D-01069 Dresden, Germany; (K.S.); (I.K.-S.)
| | - Christian Hannig
- Clinic of Operative Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, D-01307 Dresden, Germany; (J.F.); (C.H.)
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D-66421 Homburg, Germany;
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Nakamura K, Hamba H, Miyayoshi Y, Ishizuka H, Muramatsu T. In vitro remineralization of enamel with a solution containing casein and fluoride. Dent Mater J 2021; 40:1109-1114. [PMID: 33883330 DOI: 10.4012/dmj.2020-383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of the present study was to investigate the effects of casein in a remineralization solution on enamel remineralization. Bovine blocks were demineralized for 21 days, then, allocated into four groups. The specimens were remineralized for 21 days in the following artificial saliva solutions: 1) 0 µg/mL casein, 0 ppm fluoride (F) (C0-F0); 2) 0 µg/mL casein, 1 ppm F (C0-F1); 3) 10 µg/mL casein, 0 ppm F (C10-F0); and 4) 10 µg/mL casein, 1 ppm F (C10-F1). Micro-CT analyses were performed once a week. Specimens were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The present results suggest that casein by itself inhibits remineralization, whereas the coexistence of casein and F promotes the remineralization of caries bodies by interrupting mineral deposition on the enamel surface.
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Affiliation(s)
- Keiki Nakamura
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College
| | - Hidenori Hamba
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College
| | - Yoshihito Miyayoshi
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College
| | - Hisako Ishizuka
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College
| | - Takashi Muramatsu
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College
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Fischer NG, Aparicio C. The salivary pellicle on dental biomaterials. Colloids Surf B Biointerfaces 2021; 200:111570. [PMID: 33460965 PMCID: PMC8005451 DOI: 10.1016/j.colsurfb.2021.111570] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/23/2020] [Accepted: 01/07/2021] [Indexed: 12/18/2022]
Abstract
The salivary pellicle, an adlayer formed by adsorption of salivary components on teeth and dental biomaterials, has direct consequences on basic outcomes of dentistry. Here, we provide an overview of salivary pellicle formation processes with a critical focus on dental biomaterials. We describe and critique the array of salivary pellicle measurement techniques. We also discuss factors that may affect salivary pellicle formation and the heterogeneity of the published literature describing salivary pellicle formation on dental biomaterials. Finally, we survey the many effects salivary pellicles have on dental biomaterials and highlight its implications on design criteria for dental biomaterials. Future investigations may lead to rationally designed dental biomaterials to control the salivary pellicle and enhance material function and patient outcomes.
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Affiliation(s)
- Nicholas G Fischer
- MDRCBB, Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, Minneapolis, Minnesota, 55455, USA
| | - Conrado Aparicio
- MDRCBB, Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, Minneapolis, Minnesota, 55455, USA.
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Niemeyer SH, Baumann T, Lussi A, Meyer-Lueckel H, Scaramucci T, Carvalho TS. Salivary pellicle modification with polyphenol-rich teas and natural extracts to improve protection against dental erosion. J Dent 2020; 105:103567. [PMID: 33387569 DOI: 10.1016/j.jdent.2020.103567] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/22/2020] [Accepted: 12/19/2020] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE To investigate the modification of the salivary pellicle with different polyphenol-rich teas and natural extracts for the protection against dental erosion. METHODS We performed two experiments: one with teas (Green tea, Black tea, Peppermint tea, Rosehip tea, negative control [NC]) and other with natural extracts (Grape seed, Grapefruit seed, Cranberry, Propolis, NC), where NC was deionized water. A total of 150 enamel specimens were used (n = 15/group). Both experiments followed the same design, consisting of 5 cycles of: salivary pellicle formation (30 min, 37 °C), modification with the solutions (30 min, 25 °C), further salivary pellicle formation (60 min, 37 °C) and erosive challenge (1 min, 1% citric acid, pH 3.6). Relative surface microhardness (rSMH), relative surface reflection intensity (rSRI) and amount of calcium release (CaR) were evaluated. Data were analysed with Kruskal-Wallis and Wilcoxon rank sum tests with Bonferroni correction (α = 0.05). RESULTS Regarding teas, Black and Green teas showed the best protection against dental erosion, presenting higher rSMH and lower CaR than NC. Peppermint tea was not different to NC and Rosehip tea caused erosion, showing the highest CaR and greatest loss of SMH and SRI. Regarding natural extracts, Grape seed and Grapefruit seed extracts presented the best protective effect, with significantly higher rSMH and lower CaR. Cranberry caused significantly more demineralization; and Propolis did not differ from NC. CONCLUSION Green tea, Black tea, Grape seed extract and Grapefruit seed extract were able to modify the salivary pellicle and improve its protective effect against enamel erosion, but Rosehip tea and Cranberry extract caused erosion. CLINICAL RELEVANCE Some some bio-products, such as teas and natural extracts, improve the protective effect of the salivary pellicle against enamel erosion. More studies should be performed in order to test the viability of their use as active ingredients for oral care products.
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Affiliation(s)
- Samira Helena Niemeyer
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland.
| | - Tommy Baumann
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland.
| | - Adrian Lussi
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland.
| | - Hendrik Meyer-Lueckel
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland.
| | - Taís Scaramucci
- Department of Restorative Dentistry, University of São Paulo, School of Dentistry, Av. Prof. Lineu Prestes 2227, Cidade Universitária, São Paulo, SP, Zip code: 05508-000, Brazil.
| | - Thiago Saads Carvalho
- Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland.
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Pelá VT, Lunardelli JG, Ventura TM, Camiloti GD, Baumann T, Carvalho TS, Lussi A, Buzalaf MA. Proteomic profiles of the acquired enamel pellicle formed in vitro, in situ, or in vivo. Eur J Oral Sci 2020; 128:487-494. [DOI: 10.1111/eos.12744] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 10/06/2020] [Accepted: 10/13/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Vinícius T. Pelá
- Department of Genetics and Evolution Federal University of São Carlos São Carlos Brazil
| | - João G.Q. Lunardelli
- Department of Biological Sciences Bauru School of Dentistry University of São Paulo Bauru‐SP Brazil
| | - Talita M.O. Ventura
- Department of Biological Sciences Bauru School of Dentistry University of São Paulo Bauru‐SP Brazil
| | - Gabriel D. Camiloti
- Department of Biological Sciences Bauru School of Dentistry University of São Paulo Bauru‐SP Brazil
| | - Tommy Baumann
- Department of Restorative, Preventive and Pediatric Dentistry School of Dental Medicine University of Bern Bern Switzerland
| | - Thiago S. Carvalho
- Department of Restorative, Preventive and Pediatric Dentistry School of Dental Medicine University of Bern Bern Switzerland
| | - Adrian Lussi
- Department of Restorative, Preventive and Pediatric Dentistry School of Dental Medicine University of Bern Bern Switzerland
| | - Marília A.R. Buzalaf
- Department of Biological Sciences Bauru School of Dentistry University of São Paulo Bauru‐SP Brazil
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15
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Taira EA, Carvalho G, Ferrari CR, Martini T, Pelá VT, Ventura TMO, Dionizio AS, Crusca E, Marchetto R, Buzalaf MAR. Statherin-derived peptide protects against intrinsic erosion. Arch Oral Biol 2020; 119:104890. [DOI: 10.1016/j.archoralbio.2020.104890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 06/29/2020] [Accepted: 08/25/2020] [Indexed: 10/23/2022]
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Ayoub HM, Gregory RL, Tang Q, Lippert F. Influence of salivary conditioning and sucrose concentration on biofilm-mediated enamel demineralization. J Appl Oral Sci 2020; 28:e20190501. [PMID: 32236356 PMCID: PMC7105287 DOI: 10.1590/1678-7757-2019-0501] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 12/06/2019] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION The acquired pellicle formation is the first step in dental biofilm formation. It distinguishes dental biofilms from other biofilm types. OBJECTIVE To explore the influence of salivary pellicle formation before biofilm formation on enamel demineralization. METHODOLOGY Saliva collection was approved by Indiana University IRB. Three donors provided wax-stimulated saliva as the microcosm bacterial inoculum source. Acquired pellicle was formed on bovine enamel samples. Two groups (0.5% and 1% sucrose-supplemented growth media) with three subgroups (surface conditioning using filtered/pasteurized saliva; filtered saliva; and deionized water (DIW)) were included (n=9/subgroup). Biofilm was then allowed to grow for 48 h using Brain Heart Infusion media supplemented with 5 g/l yeast extract, 1 mM CaCl2.2H2O, 5% vitamin K and hemin (v/v), and sucrose. Enamel samples were analyzed for Vickers surface microhardness change (VHNchange), and transverse microradiography measuring lesion depth (L) and mineral loss (∆Z). Data were analyzed using two-way ANOVA. RESULTS The two-way interaction of sucrose concentration × surface conditioning was not significant for VHNchange (p=0.872), ∆Z (p=0.662) or L (p=0.436). Surface conditioning affected VHNchange (p=0.0079), while sucrose concentration impacted ∆Z (p<0.0001) and L (p<0.0001). Surface conditioning with filtered/pasteurized saliva resulted in the lowest VHNchange values for both sucrose concentrations. The differences between filtered/pasteurized subgroups and the two other surface conditionings were significant (filtered saliva p=0.006; DIW p=0.0075). Growing the biofilm in 1% sucrose resulted in lesions with higher ∆Z and L values when compared with 0.5% sucrose. The differences in ∆Z and L between sucrose concentration subgroups was significant, regardless of surface conditioning (both p<0.0001). CONCLUSION Within the study limitations, surface conditioning using human saliva does not influence biofilm-mediated enamel caries lesion formation as measured by transverse microradiography, while differences were observed using surface microhardness, indicating a complex interaction between pellicle proteins and biofilm-mediated demineralization of the enamel surface.
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Affiliation(s)
- Hadeel M Ayoub
- King Saud University, Dental Health Department, College of Applied Medical Sciences, Riyadh, Saudi Arabia.,Indiana University, School of Dentistry, Department of Biomedical Sciences and Comprehensive Care, Indianapolis, Indiana, USA
| | - Richard L Gregory
- Indiana University, School of Dentistry, Department of Biomedical Sciences and Comprehensive Care, Indianapolis, Indiana, USA
| | - Qing Tang
- Indiana University, School of Medicine, Department of Biostatistics, Indianapolis, Indiana, USA
| | - Frank Lippert
- Indiana University, School of Dentistry, Department of Cariology, Operative Dentistry and Dental Public Health, Indianapolis, Indiana, USA
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Mukai Y, Torii M, Urushibara Y, Kawai T, Takahashi Y, Maeda N, Ohkubo C, Ohshima T. Analysis of plaque microbiota and salivary proteins adhering to dental materials. J Oral Biosci 2020; 62:182-188. [PMID: 32151606 DOI: 10.1016/j.job.2020.02.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/10/2020] [Accepted: 01/23/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVES Plaque causes oral diseases and aspiration-pneumonia in the elderly. It is not known whether pellicle-like attached salivary proteins and microbiota on dental materials are identical to those on teeth. The purpose of this study was to determine the properties of salivary proteins and microbiota that attach to dental materials. METHODS Eight subjects wore removable oral splints with pieces of pure-titanium, cobalt-chromium alloy, silver-palladium-copper-gold-alloy, denture-base-resin, and hydroxyapatite for 24 h. The bacteria that adhered to each material were analyzed using 16S rRNA sequencing simultaneously. Each material sample was then immersed in pooled saliva, and the attached proteins were collected. Salivary proteins were analyzed using MALDI-TOF/MS, and high molecular weight proteins were identified using peptide mass fingerprinting. RESULTS Among the dental materials, the α- and β-diversity of adherent flora were similar. The bacterial species that adhered easily to materials were Streptococcus sp. oral taxon 058, Neisseria mucosa, Gemella haemolysans, and Rothia dentocariosa. Regardless of material, the peaks or spots of attached salivary proteins had similar patterns, containing functioning proteins such as anchoring receptors for early colonizers. CONCLUSIONS There were no significant differences in microbiota and protein adherence in hydroxyapatite compared to the dental materials. Therefore, similar microbiota was determined to have formed on the similar pellicle-like proteins. In our study, the characteristics of plaque adhesion on both hydroxyapatite and dental materials were clarified. Based on this study, the creation of new methods of inhibiting plaque adhesion to prevent aspiration-pneumonia and oral infections can be undertaken.
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Affiliation(s)
- Yoko Mukai
- Department of Oral Microbiology, Tsurumi University, School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, 230-8501, Japan.
| | - Mana Torii
- Department of Removable Prosthodontics, Tsurumi University, School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, Japan.
| | - Yu Urushibara
- Department of Removable Prosthodontics, Tsurumi University, School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, Japan.
| | - Tomomi Kawai
- Department of Oral Microbiology, Tsurumi University, School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, 230-8501, Japan.
| | - Yasuharu Takahashi
- Department of Oral Microbiology, Tsurumi University, School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, 230-8501, Japan.
| | - Nobuko Maeda
- Department of Oral Microbiology, Tsurumi University, School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, 230-8501, Japan.
| | - Chikahiro Ohkubo
- Department of Removable Prosthodontics, Tsurumi University, School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, Japan.
| | - Tomoko Ohshima
- Department of Oral Microbiology, Tsurumi University, School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, 230-8501, Japan.
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Erosive loss of tooth substance is dependent on enamel surface structure and presence of pellicle - An in vitro study. Arch Oral Biol 2020; 112:104686. [PMID: 32112967 DOI: 10.1016/j.archoralbio.2020.104686] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 02/04/2020] [Accepted: 02/20/2020] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Aim of this in vitro study was to investigate erosive tooth loss in dependence of the enamel surface structure and presence of an acquired pellicle. METHODS Enamel specimens from 19 bovine incisors (4 specimens/incisor) were allocated to four experimental groups (n = 19). The surfaces of half of the specimens were polished (two groups), while the other half was left native (two groups). Specimens of one polished and one native group were placed in pooled human saliva (30 min) for the formation of an acquired pellicle. Thereafter, all specimens were demineralized by superfusion with hydrochloric acid (17 min, pH 2.3) with collection of the superfluent. Erosive substance loss was determined by measuring the dissolved calcium content using a colorimetric assay with Arsenazo III reagent. Differences in erosive substance loss were statistically analyzed with respect to enamel surface and pellicle. A linear mixed effects model was fitted to the data and pairwise differences between groups were evaluated (significance level α= 0.05). RESULTS Enamel surface structure (p < 0.001) and presence of pellicle (p = 0.01) had a significant effect on erosive substance loss. Polished surfaces with pellicle showed the lowest cumulative calcium release [nmol Ca/mm2] (means ± standard deviation: 48+/-5), followed by polished specimens without (51+/-9) and native specimens with pellicle (54+/-10). No significant differences were found between these groups. Highest cumulative calcium release was found for native specimens without pellicle (61+/-9; p < 0.05). CONCLUSIONS Both enamel surface structure and the acquired pellicle are important determinants of the susceptibility to erosive tooth loss.
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Houghton JW, Yong JT, Carpenter G, Bartlett D, Moazzez R, O'Toole S. Differences in the Natural Enamel Surface and Acquired Enamel Pellicle following Exposure to Citric or Hydrochloric Acid. Caries Res 2020; 54:226-233. [PMID: 31962317 DOI: 10.1159/000504746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 11/13/2019] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES The aim of this study was to investigate variations in the interaction between enamel, that is, the acquired enamel pellicle (AEP) and citric or hydrochloric acid. MATERIALS AND METHODS A 24-h AEP was formed on natural enamel specimens (n = 40) from pooled whole mouth human saliva. Samples were randomly allocated to citric (0.3%, pH 3.2) or hydrochloric (HCl) acid (0.01 M, pH 2.38) exposure for 30 or 300 s. The total protein concentration (TPC), and phosphorous and calcium concentrations of the pellicle were determined before and after acid exposure, and again after re-immersion in saliva. Surface roughness and tandem scanning confocal microscopy imaging were used to assess enamel changes. RESULTS After 300 s of citric acid exposure, the mean ± SD TPC reduced from 5.1 ± 1.1 to 3.5 ± 1.1 mg/mL (p < 0.05). In contrast, after 300 s of HCl exposure, the mean TPC did not reduce significantly from baseline (6.6 ± 1.1 to 5.7 ± 0.7 mg/mL) but was significantly reduced in the reformed pellicle to 4.9 ± 1.2 mg/mL (p < 0.001). This reduction occurred after significant release of calcium and phosphorous from the enamel surface (p < 0.001). Thirty seconds of exposure to either acid had no obvious effect on the AEP. The surface roughness of the enamel decreased after acid exposure but no differences between groups was observed. CONCLUSIONS These findings indicate that citric acid interacted with proteins in the AEP upon contact, offering enamel protection. In contrast, HCl appeared to bypass the pellicle, and reduced protein was observed only after changes in the enamel chemical composition.
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Affiliation(s)
- Jack William Houghton
- Centre for Host Microbe-Interactions, King's College London Faculty of Dental, Oral and Craniofacial Sciences, London, United Kingdom,
| | - Jing Teng Yong
- Centre for Clinical, Oral and Translational Sciences, King's College London Faculty of Dental, Oral and Craniofacial Sciences, London, United Kingdom
| | - Guy Carpenter
- Centre for Host Microbe-Interactions, King's College London Faculty of Dental, Oral and Craniofacial Sciences, London, United Kingdom
| | - David Bartlett
- Centre for Clinical, Oral and Translational Sciences, King's College London Faculty of Dental, Oral and Craniofacial Sciences, London, United Kingdom
| | - Rebecca Moazzez
- Centre for Clinical, Oral and Translational Sciences, King's College London Faculty of Dental, Oral and Craniofacial Sciences, London, United Kingdom
| | - Saoirse O'Toole
- Centre for Clinical, Oral and Translational Sciences, King's College London Faculty of Dental, Oral and Craniofacial Sciences, London, United Kingdom
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20
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Enamel surface loss after erosive and abrasive cycling with different periods of immersion in human saliva. Arch Oral Biol 2020; 109:104549. [DOI: 10.1016/j.archoralbio.2019.104549] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 11/21/2022]
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21
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Xu X, Chen X, Li J. Natural protein bioinspired materials for regeneration of hard tissues. J Mater Chem B 2020; 8:2199-2215. [DOI: 10.1039/d0tb00139b] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This review describes the protein bioinspired materials for the repair of hard tissues such as enamel, dentin and bone.
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Affiliation(s)
- Xinyuan Xu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Xingyu Chen
- College of Medicine
- Southwest Jiaotong University
- Chengdu 610003
- China
| | - Jianshu Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
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Amado F, Calheiros-Lobo MJ, Ferreira R, Vitorino R. Sample Treatment for Saliva Proteomics. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1073:23-56. [DOI: 10.1007/978-3-030-12298-0_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Jordão MC, Ionta FQ, Bergantin BTP, Mendonça FL, Santos NMD, Honório HM, Oliveira TMD, Rios D. Influence of mandibular and palatal intraoral appliances on erosion in situ study outcome. J Appl Oral Sci 2019; 27:e20180153. [PMID: 30673029 PMCID: PMC6438665 DOI: 10.1590/1678-7757-2018-0153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 09/11/2018] [Indexed: 11/22/2022] Open
Abstract
The standardization of in situ protocols for dental erosion is important to enable comparison between studies.
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Affiliation(s)
- Maisa Camillo Jordão
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Franciny Querobim Ionta
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Bianca Tozi Portaluppe Bergantin
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Fernanda Lyrio Mendonça
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Natália Mello Dos Santos
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Heitor Marques Honório
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Thais Marchini de Oliveira
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Daniela Rios
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
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Güth-Thiel S, Kraus-Kuleszka I, Mantz H, Hoth-Hannig W, Hähl H, Dudek J, Jacobs K, Hannig M. Comprehensive measurements of salivary pellicle thickness formed at different intraoral sites on Si wafers and bovine enamel. Colloids Surf B Biointerfaces 2018; 174:246-251. [PMID: 30469045 DOI: 10.1016/j.colsurfb.2018.11.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 08/30/2018] [Accepted: 11/07/2018] [Indexed: 11/19/2022]
Abstract
The salivary pellicle is a thin acellular film formed on orally exposed surfaces by adsorption of macromolecules from the oral fluids and serves as a protective layer in the maintenance of oral health. Pellicle thickness measurements are a central tool helping to understand how exogenous manipulations may influence pellicle formation. This is of particular importance for the investigation of new preventive and therapeutic approaches. In the present study we determined the kinetics of the in situ pellicle thickness formation at different intraoral sites and investigated how pellicle formation occurs in different individuals. To address the kinetic aspect, the thickness of the in situ pellicle was determined after formation periods of 3 min, 30 min and 120 min. The thickness of the pellicle was either measured on silicon wafers by ellipsometry or on bovine enamel by transmission electron microscopy. We found a physiologically important rapid pellicle formation phase within the first minutes and a slow pellicle formation phase between 30 min and 120 min. Furthermore, our results identify significant inter-individual differences both for the pellicle thickness and for the formation kinetics, indicating the consideration of individual-specific differences of the pellicle layer as an important aspect for future studies.
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Affiliation(s)
- Sabine Güth-Thiel
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, 66421, Homburg, Saar, Germany
| | - Ines Kraus-Kuleszka
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, 66421, Homburg, Saar, Germany
| | - Hubert Mantz
- University of Applied Sciences Ulm, Albert-Einstein-Allee 55, 89081, Ulm, Germany
| | - Wiebke Hoth-Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, 66421, Homburg, Saar, Germany
| | - Hendrik Hähl
- Experimental Physics, Saarland University, Campus E2 9, 66123, Saarbrücken, Germany
| | - Johanna Dudek
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, 66421, Homburg, Saar, Germany
| | - Karin Jacobs
- Experimental Physics, Saarland University, Campus E2 9, 66123, Saarbrücken, Germany.
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, 66421, Homburg, Saar, Germany.
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25
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Ionta FQ, Alencar CRBD, Santos NMD, Bergantin BTP, Val PP, Honório HM, Oliveira TMD, Rios D. Effect of palm oil alone or associated to stannous solution on enamel erosive-abrasive wear: A randomized in situ/ex vivo study. Arch Oral Biol 2018; 95:68-73. [DOI: 10.1016/j.archoralbio.2018.07.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 07/14/2018] [Accepted: 07/17/2018] [Indexed: 11/30/2022]
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In vitro evaluation of the early erosive lesion in polished and natural human enamel. Dent Mater 2018; 34:1391-1400. [DOI: 10.1016/j.dental.2018.06.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/12/2018] [Accepted: 06/07/2018] [Indexed: 12/29/2022]
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27
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Yang X, Li Z, Xiao H, Wang N, Li Y, Xu X, Chen Z, Tan H, Li J. A Universal and Ultrastable Mineralization Coating Bioinspired from Biofilms. ADVANCED FUNCTIONAL MATERIALS 2018. [DOI: 10.1002/adfm.201802730] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xiao Yang
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; No. 24, South Section One of Yinhuan Road Chengdu 610065 P. R. China
| | - Zhenhua Li
- State Key Laboratory of Supramolecular Structure and Materials; Institute of Theoretical Chemistry; Jilin University; 2699 Qianjin Street Changchun 130012 P. R. China
| | - Hong Xiao
- Department of Pain Management; West China Hospital; Sichuan University; No. 37, GuoXue Xiang Chengdu 610041 P. R. China
| | - Ning Wang
- Regenerative Medicine Research Center; West China Hospital; Sichuan University; No. 37, GuoXue Xiang Chengdu 61004 P. R. China
| | - Yanpu Li
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; No. 24, South Section One of Yinhuan Road Chengdu 610065 P. R. China
| | - Xinyuan Xu
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; No. 24, South Section One of Yinhuan Road Chengdu 610065 P. R. China
| | - Zhijun Chen
- State Key Laboratory of Supramolecular Structure and Materials; Institute of Theoretical Chemistry; Jilin University; 2699 Qianjin Street Changchun 130012 P. R. China
| | - Hong Tan
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; No. 24, South Section One of Yinhuan Road Chengdu 610065 P. R. China
| | - Jianshu Li
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; No. 24, South Section One of Yinhuan Road Chengdu 610065 P. R. China
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Santos NM, Jordão MC, Ionta FQ, Mendonça FL, Di Leone CCL, Buzalaf MAR, Oliveira TM, Honório HM, Cruvinel T, Rios D. Impact of a simplified in situ protocol on enamel loss after erosive challenge. PLoS One 2018; 13:e0196557. [PMID: 29734362 PMCID: PMC5937767 DOI: 10.1371/journal.pone.0196557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 04/16/2018] [Indexed: 11/19/2022] Open
Abstract
This study investigated the effect of the period of use and location of intraoral appliances on enamel surface loss. This randomized, single blind in situ study was conducted in 2 crossover phases based on the period of use, in which maxillary and mandibular appliances were simultaneously worn. Bovine enamel blocks (n = 120) were randomly divided among the studied groups by surface hardness. In each phase, fifteen volunteers used one maxillary appliance and two mandibular appliances for 5 days. Erosive challenge was performed 4X/day by immersion in 0.01 M HCL for 2 minutes. In the continuous phase, the intraoral appliances were worn for 20 hours. In the intermittent phase the appliances were worn for 8 hours and 30 minutes. Enamel loss was determined profilometrically. The discomfort of use of the appliances were evaluated in a questionnaire. Data were analyzed by two-way ANOVA/Tukey’s test and chi-square test (p<0.05). The maxillary appliance promoted higher enamel loss compared to the mandibular one (p<0.001). Intermittent use of appliances resulted in similar enamel loss to the continuous one (p = 0.686). All volunteers preferred to use the maxillary appliance in an intermittent regimen. The intermittent use of maxillary appliance is a simplified reliable protocol appropriated for in situ erosion studies in enamel.
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Affiliation(s)
- Natália Mello Santos
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Maísa Camillo Jordão
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Franciny Querobim Ionta
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Fernanda Lyrio Mendonça
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Camilla Cristina Lira Di Leone
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | | | - Thais Marchini Oliveira
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Heitor Marques Honório
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Thiago Cruvinel
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Daniela Rios
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
- * E-mail:
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Milosevic A. Clinical guidance and an evidence-based approach for restoration of worn dentition by direct composite resin. Br Dent J 2018; 224:301-310. [PMID: 29495026 DOI: 10.1038/sj.bdj.2018.168] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2017] [Indexed: 11/09/2022]
Abstract
This paper aims to provide the dentist with practical guidance on the technique for direct composite restoration of worn teeth. It is based on current evidence and includes practical advice regarding type of composite, enamel and dentine preparation, dentine bonding and stent design. The application of direct composite has the advantage of being additive, conserving as much of the remaining worn tooth as possible, ease of placement and adjustment, low maintenance and reversibility. A pragmatic approach to management is advocated, particularly as many of the cases are older patients with advanced wear. Several cases restored by direct composite build-ups illustrate what can be achieved. The restoration of the worn dentition may be challenging for many dentists. Careful planning and simple treatment strategies, however, can prove to be highly effective and rewarding. By keeping any intervention as simple as possible, problems with high maintenance are avoided and management of future failure is made easier. An additive rather than a subtractive treatment approach is more intuitive for worn down teeth. Traditional approaches of full-mouth rehabilitation with indirect cast or milled restorations may still have their place but complex treatment modalities will inevitably be more time consuming, more costly, possibly require specialist care and still have an unpredictable outcome. Composite resin restorations are a universal restorative material familiar to dentists from early-on in the undergraduate curriculum. This review paper discusses the application of composite to restore the worn dentition.
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Affiliation(s)
- A Milosevic
- Head of Prosthodontics, Building 34, Hamdan Bin Mohamed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai Healthcare City, POB 505055, Dubai, UAE
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Buzalaf MAR, Magalhães AC, Rios D. Prevention of erosive tooth wear: targeting nutritional and patient-related risks factors. Br Dent J 2018; 224:371-378. [PMID: 29495031 DOI: 10.1038/sj.bdj.2018.173] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2017] [Indexed: 02/07/2023]
Abstract
This article provides an overview of the nutritional and patient-related risk factors involved in the aetiology of erosive tooth wear (ETW) and the preventive strategies to counteract them. The first step is to diagnose clinical signs of ETW and to recognise causal factors. Low pH and high buffer capacity of foods/drinks are the major risk factors, while the calcium concentration is the main protective factor. Reduction of frequency of consumption and contact time of erosive foods/drinks with the teeth, use of straws appropriately positioned and consumption of dairy products are advisable. Oral hygiene has a role in the development of ETW, however, postponing toothbrushing is not clinically advisable. In cases of drug abuse, chronic alcoholism, GERD or bulimia, the patient must be referred to a doctor. Immediately after vomiting, patients might be advised to rinse the mouth. Saliva has an important protective role and patients with reduced salivary flow can benefit from the use of chewing gum. Recent studies have focused on improving the protective capacity of the acquired pellicle as well as on the role of protease inhibitors on dentine erosion. However, the degree of evidence for these preventive measures is low. Clinical trials are necessary before these measures can be recommended.
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Affiliation(s)
- M A R Buzalaf
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, São Paulo, Brazil 17,012-901
| | - A C Magalhães
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, São Paulo, Brazil 17,012-901
| | - D Rios
- Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, São Paulo, Brazil 17,012-901
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Al-Ashtal A, Johansson A, Omar R, Johansson AK. Dental erosion in groups of Yemeni children and adolescents and the modification of an erosion partial recording system. Int J Paediatr Dent 2017; 27:283-292. [PMID: 27545983 DOI: 10.1111/ipd.12263] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND The prevalence of dental erosion is rising especially among children and adolescents and its grading needs further investigation. AIMS To determine the prevalence and severity of dental erosion in groups of Yemeni children and adolescents, and to clinically compare an erosion partial recording system (EPRS) with a proposed modified-simplified version (EPRS-M). DESIGN Of 6163 individuals aged 5-6, 13-14 and 18-19 years, 911 were randomly selected, of which 668 participated in the study. Dental erosion was graded using EPRS. EPRS-M was proposed, and its sensitivity and specificity was calculated in relation to EPRS. RESULTS Prevalence of erosion extending into dentine on at least one tooth was 6.8% among 5- to 6-year-olds, 3.0% among 13- to 14-year-olds and 14.6% among 18- to 19-year olds. The highest prevalence was 19.2% among girls aged 18-19 years which was significantly higher than boys (10.4%) in the same age group (P = 0.044). Sensitivity and specificity for EPRS-M in relation to EPRS were 85.7% and 100% for primary teeth, and 84.1% and 100% for permanent teeth. CONCLUSIONS Dental erosion was common among children and older teenagers and highest among older girls but less common among younger teenagers. The tested accuracy of EPRS-M qualifies it to be used as an initial quick detection tool in future dental erosion research.
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Affiliation(s)
- Amin Al-Ashtal
- Department of Clinical Dentistry - Cariology, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
| | - Anders Johansson
- Department of Clinical Dentistry - Prosthodontics, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
| | - Ridwaan Omar
- Department of Restorative Sciences, Faculty of Dentistry, Kuwait University, Safat, Kuwait
| | - Ann-Katrin Johansson
- Department of Clinical Dentistry - Cariology, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
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Ventura TMDS, Cassiano LDPS, Souza E Silva CMD, Taira EA, Leite ADL, Rios D, Buzalaf MAR. The proteomic profile of the acquired enamel pellicle according to its location in the dental arches. Arch Oral Biol 2017; 79:20-29. [PMID: 28282514 DOI: 10.1016/j.archoralbio.2017.03.001] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 02/28/2017] [Accepted: 03/01/2017] [Indexed: 01/10/2023]
Abstract
OBJECTIVE This study evaluated the variation in the protein profile of the acquired enamel pellicle (AEP) formed in vivo according to its location in the dental arches. DESIGN The AEP was formed for 120min in 9 volunteers. Pellicle formed at upper+lower anterior facial (ULAFa; teeth 13-23 and 33-43), upper anterior palatal (UAPa; teeth 13-23), lower anterior lingual (LALi; teeth 33-43), upper+lower posterior facial (ULPFa; teeth 14-17 24-27, 34-37 and 44-47), upper posterior palatal (UPPa; teeth 14-17 and 24-27) and lower posterior lingual (LPLi; teeth 34-37 and 44-47) regions were collected separately and processed for analysis by label-free LC-ESI-MS/MS. RESULTS Three-hundred sixty three proteins were identified in total, twenty-five being common to all the locations, such as Protein S100-A8, Lysozyme C, Lactoferrin, Statherin, Ig alpha-2, ALB protein, Myeloperoxidase and SMR3B. Many proteins were found exclusively in the AEP collected from one of the regions (46-UAPa, 33-LALi, 59-ULAFa, 31-ULPFa, 44-LPLi and 39-UPPa). CONCLUSIONS The protein composition of the AEP varied according to its location in the dental arches. These results provide important insights for understanding the differential protective roles of the AEP as a function of its location in the dental arches.
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Affiliation(s)
| | | | | | - Even Akemi Taira
- Department of Biological Science, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
| | - Aline de Lima Leite
- Department of Biological Science, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
| | - Daniela Rios
- Department of Pediatric Dentistry, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
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Milosevic A. Acid Erosion: An Increasingly Relevant Dental Problem. Risk Factors, Management and Restoration. Prim Dent J 2017; 6:37-45. [PMID: 28376962 DOI: 10.1177/205016841700600105] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A review of risk factors and management of acid erosion. Particular emphasis is placed on the use of direct composite as a reversible and relatively straightforward restorative option.
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Effect of gels containing chlorhexidine or epigallocatechin-3-gallate on the protein composition of the acquired enamel pellicle. Arch Oral Biol 2017. [PMID: 28622550 DOI: 10.1016/j.archoralbio.2017.05.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
OBJECTIVE This study evaluated changes in protein profile of the acquired enamel pellicle (AEP) formed in vivo, after application of gels containing chlorhexidine or EGCG and further challenge with citric acid. DESIGN AEP was formed in 9 volunteers for 2h and then treated with one of the following gels: placebo, 400μM EGCG or 0.012% chlorhexidine. A thin layer of gel was applied and after 1min the excess was removed. One hour after gel application, the AEP was collected from the buccal surface (upper and lower jaw) of one of the sides with filter paper dipped in 3% citric acid. On the other side, erosive challenge was performed through gentle application of 1% citric acid (pH 2.5) for 20s (using a pipette) followed by washing with deionized water. The AEP was collected as mentioned before. Proteomic analysis was performed through liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS). The MS/MS spectra obtained were compared with human protein databases (SWISS-PROT). Label-free quantitation was done using the PLGS software. RESULTS In total, 223 proteins were identified. After treatment with EGCG and CHX gels, proteins with potential functions to protect against caries and erosion such as PRPs, calcium-bind proteins and Statherin were increased. When EGCG and CHX-treated AEPs were challenged with citric acid, there was increase in cystatins and Profilin-1. CONCLUSION CHX- and EGCG-treated AEPs, submitted to challenge with citric acid or not, had remarkable changes in their proteomic profiles.
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Ablal MA, Milosevic A, Preston AJ, Higham SM. A novel approach to study in situ enamel erosion and abrasion lesions. J Dent 2017; 59:78-85. [PMID: 28232081 DOI: 10.1016/j.jdent.2017.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 02/15/2017] [Accepted: 02/18/2017] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES This study investigated previous hypotheses that the tongue can abrade acid softened/eroded enamel surfaces. METHODS Twelve upper removable appliances each retaining 2 anterior and 2 posterior human enamel specimens were constructed. Each specimen was exposed to acid on both surfaces, but only one surface was allowed contact with the tongue. Therefore, 96 surfaces were assessed. Appliances were worn from 9.30 to 17.00 Monday to Friday for 22days. Acid eroded lesions were created by immersing the specimens for 5min in 50ml orange juice three times daily. Enamel loss was measured using Quantitative light- induced fluorescence (QLF) and Non- contact profilometry (NCLP) and the differences (D) between tongue (Dt) and palate facing (DP) surfaces determined. RESULTS %ΔFD(t-p) from the two anterior specimens were greater than from those placed posteriorly with mean values of 15.9% (±9.1) and 14.4% (±8.4), 5.6% (±8.7) and 4.5% (±6.6) respectively. Similarly, NCLP data showed anterior specimens had greater differences for mean step height (MSH) between tongue- facing and the palate- facing (control) surfaces than posterior specimens. MSHD(t-p) values were 59.4μm (±30.3) for anterior tongue facing surfaces and 55.5μm (±29.4) for posterior palate facing surfaces. For the posterior specimens MSH was 48.1μm (±26.1) and 51.7μm (±30.4) respectively (p<0.05). CONCLUSION The greater enamel surface loss of the anterior specimens demonstrates that abrasion by the tongue on acid softened/eroded enamel in situ is likely.
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Affiliation(s)
- M A Ablal
- Department of Restorative Dentistry, Liverpool University Dental Hospital, UK.
| | - A Milosevic
- Department of Restorative Dentistry, Liverpool University Dental Hospital, UK
| | - A J Preston
- Department of Restorative Dentistry, Liverpool University Dental Hospital, UK
| | - S M Higham
- Department of Health Services Research/School of Dentistry, Institute of Psychology, Health and Society, University of Liverpool, UK
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A randomised clinical trial to determine the abrasive effect of the tongue on human enamel loss with and without a prior erosive challenge. J Dent 2017; 58:48-53. [PMID: 28161365 DOI: 10.1016/j.jdent.2017.01.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 01/17/2017] [Accepted: 01/29/2017] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVES To investigate the abrasive effect of the tongue on human enamel loss with and without a prior dietary acid challenge in an in situ model. METHODS A single centre, single blind, randomly allocated, split mouth, four treatment regimen, in situ study in healthy adult volunteers was undertaken. Twenty four subjects wore two lower intra-oral appliances each fitted with 4 human enamel samples 6h/day for 15 days. The samples were treated with either 50ml orange juice or water for 5min ex vivo 4x/day; prior to being licked or not licked with the subject's tongue for 60s. There were 2 samples per group per subject. Surface loss was measured by contact profilometry. RESULTS 23 subjects completed the study with no adverse events. The mean loss of enamel at 15days was: 0.08μm for water without licking, 0.10μm with water and licking; 1.55μm with orange juice alone, 3.65μm with orange juice and licking. In the absence of erosive challenge, licking had no detectable effect on enamel loss p=0.28. Without licking, orange juice had a highly significant effect on loss compared to water, p<0.001. Erosive challenge followed by licking more than doubled the loss of enamel p<0.001. CONCLUSIONS When enamel was exposed to orange juice prior to licking, tissue loss as a result of tongue abrasion of the eroded surface was increased, and double that of the erosive challenge alone. Licking enamel with the tongue had no perceptible effect on enamel loss in the absence of the erosive challenge. CLINICAL SIGNIFICANCE Enamel wear resulting from tongue abrasion on tooth surfaces softened by acid challenge, can be an unavoidable consequence of oral function. This may account for the pattern of erosive toothwear on palatal and occlusal tooth surfaces, reinforcing the importance of restricting the frequency of dietary acid challenge in susceptible individuals.
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Mendonça FL, Jordão MC, Ionta FQ, Buzalaf MAR, Honório HM, Wang L, Rios D. In situ effect of enamel salivary exposure time and type of intraoral appliance before an erosive challenge. Clin Oral Investig 2017; 21:2465-2471. [DOI: 10.1007/s00784-016-2043-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 12/21/2016] [Indexed: 02/03/2023]
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Sushma R, Sathe TT, Farias A, Sanyal PK, Kiran S. "Nature cures:" An alternative herbal formulation as a denture cleanser. Ann Afr Med 2017; 16:6-12. [PMID: 28300045 PMCID: PMC5452698 DOI: 10.4103/aam.aam_43_16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Candida albicans is one of the microorganisms which harbor the oral cavity, especially in elderly. However, the incidence of existence of this increases in patients using removable dental prosthesis. There is therefore a need to test the anticandidal efficacy of these cost-effective, easily available products to be used as routine denture cleansers. AIM AND OBJECTIVES (1) To evaluate antifungal properties of triphala churna on the heat cure denture base material. (2) To evaluate the antifungal effect of chlorhexidine gluconate on the heat cure denture base material. (3) To compare the antifungal effect of triphala churna and chlorhexidine gluconate with a control. (4) To evaluate which among triphala churna and chlorhexidine gluconate has a better antifungal property on the heat cure denture base material. MATERIALS AND METHODS Study population consisted of sixty dentures wearers from those attending the Outpatient Department of Prosthodontics of the School of Dentistry, Krishna Institute of Medical Sciences Deemed University, Karad. Swabs were collected from the dentures before and after the use of triphala and chlorhexidine. The swabs were cultured on Sabouraud dextrose agar and the total Candida counts were determined. CONCLUSION Triphala as an antifungal is shown to have more efficacy than the conventional chlorhexidine mouthwash. Résumé Arrière-plan: Candida albicans est l'un des micro-organismes qui abritent la cavité buccale surtout chez les personnes âgées. Cependant, l'incidence de l'existence de cette augmentation chez les patients utilisant des prothèses dentaires amovibles. Il est donc nécessaire de tester l'efficacité anticancédique de ces produits rentables et faciles à utiliser pour être utilisés comme nettoyants de routine pour prothèses dentaires. Buts et Objectifs: (1) Évaluer les propriétés antifongiques de Triphala churna sur le matériau de base de la prothèse thermo-durcissable. (2) Évaluer l'effet antifongique du gluconate de chlorhexidine sur le matériau de base de la prothèse thermo-durcissable. (3) Comparer l'effet antifongique de Triphala churna et du gluconate de chlorhexidine avec un témoin. (4) Évaluer lequel parmi Triphala churna et le gluconate de chlorhexidine a une meilleure propriété antifongique sur le matériel de base de la prothèse de durcissement à chaud. Matériaux et Méthode: La population de l'étude était constituée de soixante porteurs de prothèses dentaires de ceux qui fréquentaient le Département de Prosthodontie de l'École des Sciences Dentaires de l'Institut Krishna des Sciences Médicales de l'Université de Karad. Des prélèvements ont été effectués sur les prothèses avant et après l'utilisation de Triphala et de chlorhexidine. On a cultivé les écouvillons sur de l'agar Sabouraud dextrose et on a déterminé le nombre total de candida. CONCLUSION Triphala comme un anti fongique est démontré pour avoir plus d'efficacité que le lavage de la bouche classique chlorhexidine.
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Affiliation(s)
- R. Sushma
- Department of Prosthodontics and Crown and Bridge, School of Dental Sciences, Krishna Institute of Medical Sciences and Deemed University, Karad, Maharashtra, India
| | - Tanuja Tanaji Sathe
- Department of Prosthodontics and Crown and Bridge, School of Dental Sciences, Krishna Institute of Medical Sciences and Deemed University, Karad, Maharashtra, India
| | - Anand Farias
- Department of Prosthodontics and Crown and Bridge, Melaka-Manipal Medical College, Melaka, Malaysia
| | - Pronob Kumar Sanyal
- Department of Prosthodontics and Crown and Bridge, School of Dental Sciences, Krishna Institute of Medical Sciences and Deemed University, Karad, Maharashtra, India
| | - Shashi Kiran
- Department of Pedodontics and Preventive Dentistry, School of Dental Sciences, Krishna Institute of Medical Sciences and Deemed University, Karad, Maharashtra, India
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Jensdottir T, Holbrook P, Nauntofte B, Buchwald C, Bardow A. Immediate Erosive Potential of Cola Drinks and Orange Juices. J Dent Res 2016; 85:226-30. [PMID: 16498068 DOI: 10.1177/154405910608500304] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Little is known about the erosive potential of soft drinks within the first minutes of exposure to teeth, and about the potentially protective role of salivary proteins. We hypothesized that the erosive potential is determined primarily by pH and decreases in the presence of salivary proteins. To investigate this, we first added uncoated hydroxyapatite crystals and, second, salivary-protein-coated hydroxyapatite crystals to 20 commercially available cola drinks and orange juices simultaneously, with pH recordings every 15 sec for 3 min. The amount of apatite lost per liter of soft drink per sec was calculated from titratable acidity values to each pH obtained by crystal addition. The erosive potential within the first minutes of exposure was determined solely by the pH of the drink, and the erosive potential was ten-fold higher in cola drinks compared with juices. However, salivary proteins reduced the erosive potential of cola drinks by up to 50%.
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Affiliation(s)
- T Jensdottir
- Department of Oral Medicine, School of Dentistry, University of Copenhagen, Nørre Alle 20, 2200 Copenhagen N, Denmark.
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Sales-Peres SHDC, Xavier CNH, Mapengo MAA, Forim MR, Silva MDF, Sales-Peres A. Erosion and abrasion-inhibiting in situ effect of the Euclea natalensis plant of African regions. Braz Oral Res 2016; 30:S1806-83242016000100270. [PMID: 27305512 DOI: 10.1590/1807-3107bor-2016.vol30.0085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 02/05/2016] [Indexed: 02/01/2023] Open
Abstract
This study evaluated the effect of Euclea natalensis gel on the reduction of erosive wear with or without abrasion, in enamel and dentin. During two five-day experimental crossover phases, volunteers (n = 10) wore palatal devices containing human enamel and dentin blocks (E = 8 and D = 8). The gel was applied in a thin layer in the experimental group, and was not applied in the control group. In the intraoral phase, volunteers used the palatal appliance for 12 h before the gel treatment, and were instructed to start the erosive challenges 6 h after the gel application. Erosion was performed with Coca-Cola® (for 5 min) 4 times/day. The appliance was then put back into the mouth and was brushed after 30 minutes. After intraoral exposure, the appliances were removed and the specimens were analyzed using profilometry (mean ± SD, μm). The Euclea natalensis gel caused less wear in enamel in the experimental group (EROS = 12.86 ± 1.75 µm; EROS + ABRAS = 12.13 ± 2.12 µm) than in the control group (EROS = 14.12 ± 7.66 µm; EROS + ABRAS = 16.29 ± 10.72 µm); however, the groups did not differ from each other significantly. A statistically significant value was found for erosion and eros + abrasion in dentin (p = 0.001). Euclea natalensis may play a role in the prevention of dentin loss under mild erosive and abrasive conditions. A clinical trial is required to confirm these promising results in a clinical situation.
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Affiliation(s)
- Silvia Helena de Carvalho Sales-Peres
- Universidade de São Paulo, Universidade de São Paulo, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru SP , Brazil, Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru, SP, Brazil
| | - Cheila Nilza Hamina Xavier
- Universidade de São Paulo, Universidade de São Paulo, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru SP , Brazil, Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru, SP, Brazil
| | - Marta Artemisa Abel Mapengo
- Universidade de São Paulo, Universidade de São Paulo, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru SP , Brazil, Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru, SP, Brazil
| | - Moacir Rossi Forim
- Universidade Federal de São Carlos, Universidade Federal de São Carlos, Department of Chemistry, Laboratory of Natural Products, São Carlos SP , Brazil, Universidade Federal de São Carlos - UFSCAR, Department of Chemistry, Laboratory of Natural Products, São Carlos, SP, Brazil
| | - Maria de Fatima Silva
- Universidade Federal de São Carlos, Universidade Federal de São Carlos, Department of Chemistry, Laboratory of Natural Products, São Carlos SP , Brazil, Universidade Federal de São Carlos - UFSCAR, Department of Chemistry, Laboratory of Natural Products, São Carlos, SP, Brazil
| | - Arsenio Sales-Peres
- Universidade de São Paulo, Universidade de São Paulo, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru SP , Brazil, Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru, SP, Brazil
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Batista GR, Rocha Gomes Torres C, Sener B, Attin T, Wiegand A. Artificial Saliva Formulations versus Human Saliva Pretreatment in Dental Erosion Experiments. Caries Res 2016; 50:78-86. [PMID: 26870948 DOI: 10.1159/000443188] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 12/04/2015] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to evaluate the erosion-preventive effect of different artificial saliva formulations and human saliva in vitro compared to human saliva in situ. In the in vitro experiment, bovine enamel and dentin specimens were stored in artificial saliva (4 different formulations, each n = 20), deionized water (n = 20) or human saliva (n = 6 enamel and dentin specimens/volunteer) for 120 min. In the in situ experiment, each of the 6 enamel and dentin specimens was worn intraorally by 10 volunteers for 120 min. The specimens were then eroded (HCl, pH 2.6, 60 s). Half of the specimens were subjected to microhardness analysis (enamel) and the determination of calcium release into the acid (enamel and dentin), while the other half were again placed in the respective medium or worn intraorally, respectively, for 120 min before a second erosion was performed. Knoop microhardness of enamel and the calcium release of enamel and dentin into the acid were again determined. Statistical analysis was conducted by two-way repeated-measures ANOVA or two-way ANOVA (α = 0.05). Enamel microhardness was not significantly different between all test groups after the first and the second erosive challenge, respectively. Enamel calcium loss was significantly lower in situ compared to the in vitro experiment, where there was no significant difference between all test groups. Dentin calcium loss was significantly lower than deionized water only after the first and than all except one artificial saliva after the second erosion. Under the conditions of this experiment, the use of artificial saliva formulations and human saliva in vitro does not reflect the intraoral situation in dental erosion experiments adequately.
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Affiliation(s)
- Graziela Ribeiro Batista
- Department of Preventive Dentistry, Periodontology and Cariology, University of Zurich, Zurich, Switzerland
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Dawes C, Pedersen A, Villa A, Ekström J, Proctor G, Vissink A, Aframian D, McGowan R, Aliko A, Narayana N, Sia Y, Joshi R, Jensen S, Kerr A, Wolff A. The functions of human saliva: A review sponsored by the World Workshop on Oral Medicine VI. Arch Oral Biol 2015; 60:863-74. [DOI: 10.1016/j.archoralbio.2015.03.004] [Citation(s) in RCA: 262] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/28/2015] [Accepted: 03/02/2015] [Indexed: 12/22/2022]
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West N, Seong J, Macdonald E, He T, Barker M, Hooper S. A randomised clinical study to measure the anti-erosion benefits of a stannous-containing sodium fluoride dentifrice. J Indian Soc Periodontol 2015; 19:182-7. [PMID: 26015669 PMCID: PMC4439628 DOI: 10.4103/0972-124x.145817] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 08/18/2014] [Indexed: 11/21/2022] Open
Abstract
Background: To compare the enamel protection efficacy of stannous-containing sodium fluoride and sodium monofluorophosphate (MFP)/triclosan dentifrices marketed in India in an in situ erosion model with acidic challenge. Materials and Methods: This randomised and controlled, in situ, supervised, double-blind clinical trial employed a two-treatment, four-period crossover design, wherein subjects wore an appliance fitted with human enamel samples 6 h/day during each 10 day treatment period and swished twice daily with their assigned dentifrice slurry: Oral-B® Pro-Health (maximum 1,000 ppm F as sodium fluoride with stannous chloride) or Colgate® Strong Teeth with Cavity Protection (maximum 1,000 F as sodium MFP and triclosan). Subjects swished with 250 ml of orange juice over a 10 min period after each treatment and twice daily for the acidic erosive challenge. Enamel samples were measured for tooth surface loss using contact profilometry at baseline and day 10. Results: A total of 34 subjects were randomised to treatment; 32 subjects completed the final visit. Baseline profilometry measurements of the specimen surfaces were near zero within ± 0.3 μm, and no statistically significant difference (P > 0.48) on average was observed between the two test dentifrices. At day 10, the stannous-containing dentifrice demonstrated 88% less erosion (P < 0.0001) relative to the MFP/triclosan dentifrice. Estimated medians (95% confidence intervals) were 0.21 μm (0.17, 0.25) for the stannous-containing dentifrice versus 1.66 μm (1.39, 1.99) for the MFP/triclosan dentifrice. Both dentifrices were well-tolerated. Conclusions: Compared with MFP/triclosan toothpaste, a stabilised stannous-containing sodium fluoride dentifrice gave statistically significantly greater protection against tooth enamel surface loss in situ following repeated acid erosive challenge.
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Affiliation(s)
- Nicola West
- Department of Oral and Dental Sciences, University of Bristol Dental School and Hospital, Bristol, UK
| | - Joon Seong
- Department of Oral and Dental Sciences, University of Bristol Dental School and Hospital, Bristol, UK
| | - Emma Macdonald
- Department of Oral and Dental Sciences, University of Bristol Dental School and Hospital, Bristol, UK
| | - Tao He
- Procter and Gamble Company, Mason, OH, USA
| | | | - Susan Hooper
- Department of Oral and Dental Sciences, University of Bristol Dental School and Hospital, Bristol, UK
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Delecrode TR, Siqueira WL, Zaidan FC, Bellini MR, Leite AL, Xiao Y, Rios D, Magalhães AC, Buzalaf MAR. Exposure to acids changes the proteomic of acquired dentine pellicle. J Dent 2015; 43:583-8. [DOI: 10.1016/j.jdent.2015.02.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 01/29/2015] [Accepted: 02/02/2015] [Indexed: 02/07/2023] Open
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Alvarez Loureiro L, Fabruccini Fager A, Alves LS, Alvarez Vaz R, Maltz M. Erosive Tooth Wear among 12-Year-Old Schoolchildren: A Population-Based Cross-Sectional Study in Montevideo, Uruguay. Caries Res 2015; 49:216-25. [DOI: 10.1159/000368421] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 09/08/2014] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to assess the prevalence, extent, severity, intraoral distribution and risk indicators for erosive tooth wear (ETW) among 12-year-old schoolchildren from Montevideo, Uruguay. A population-based, cross-sectional survey was conducted using a representative sample of 1,136 12-year-old schoolchildren attending public and private schools. Parents answered questions on socioeconomic status and general health. Schoolchildren answered questions on dietary and oral hygiene habits. Two calibrated examiners recorded ETW on permanent teeth according to the Basic Erosive Wear Examination (BEWE) score system. Logistic regression models were performed to assess the association between the predictor variables and the prevalence of ETW (overall and severe ETW). Odds ratios (OR) and the respective 95% confidence intervals (CI) were estimated. The prevalence of ETW was 52.9%, being mild erosion (BEWE = 1) in the vast majority of cases (48.5%). Severe erosion (BEWE ≥2) was detected in 4.4% of schoolchildren. The overall prevalence of ETW differed significantly between categories of gender and socioeconomic status, but only between gender in the severe ETW analysis. The overall extent of ETW was significantly different between categories of gender, socioeconomic status, and swish before swallow. The extent of severe ETW differed between categories of swish before swallow and brushing frequency. In the logistic regression analysis, no association was found between the studied variables and the overall prevalence of ETW. Males were more likely to have severe ETW than females (OR = 3.22, 95% CI = 1.50-6.89). ETW may be considered a public health problem among 12-year-old-Uruguayan schoolchildren.
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Søvik JB, Tveit AB, Storesund T, Mulic A. Dental erosion: a widespread condition nowadays? A cross-sectional study among a group of adolescents in Norway. Acta Odontol Scand 2014; 72:523-9. [PMID: 24432788 DOI: 10.3109/00016357.2013.875588] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE This study aimed to investigate the prevalence, distribution and severity of erosive wear in a group of 16-18-year-olds in the western part of Norway. A second aim was to describe possible associations between caries experience, socioeconomic background and origin of birth. MATERIALS AND METHODS Adolescents (n = 795) attending recall examinations at Public Dental Service (PDS) clinics were also examined for dental erosive wear on index surfaces, using the Visual Erosion Dental Examination scoring system (VEDE). RESULTS In total, 795 individuals were examined. Dental erosive wear was diagnosed in 59% of the population (44% erosive wear in enamel only, 14% combination of enamel and dentine lesions, 1% erosive wear in dentine only). The palatal surfaces of upper central incisors and occlusal surfaces of first lower molars were affected the most (33% and 48% of all surfaces, respectively). Cuppings on molars were registered in 66% of the individuals with erosive wear. Erosive wear was significantly more prevalent among men (63%) than women (55%) (p = 0.018). CONCLUSIONS There were no significant associations between dental erosive wear and caries experience, socioeconomic background or origin of birth.
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Affiliation(s)
- Jenny Bogstad Søvik
- Department of Cariology, Faculty of Dentistry, University of Oslo , Oslo , Norway
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Er:YAG laser irradiation to control the progression of enamel erosion: an in situ study. Lasers Med Sci 2014; 30:1465-73. [PMID: 24985348 DOI: 10.1007/s10103-014-1620-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 06/22/2014] [Indexed: 10/25/2022]
Abstract
This in situ study evaluated the effect of Er:YAG laser irradiation in controlling the progression of enamel erosion-like lesions. Fifty-six enamel slabs (330 KHN ± 10 %) with one fourth of the surface covered with resin composite (control area) were submitted to initial erosion-like lesion formation with citric acid. The slabs were divided into two groups: irradiated with Er:YAG laser and non-irradiated. Fourteen volunteers used an intraoral palatal appliance containing two slabs, in two phases of 5 days each. During the intraoral phase, in a crossed-over design, half of the volunteers immersed the appliance in citric acid while the other half used deionized water, both for 5 min, three times per day. Enamel wear was determined by an optical 3D profilometer. ANOVA revealed that when deionized water was used as immersion solution during the intraoral phase, lower values of wear were showed when compared with the groups that were eroded with citric acid, whether irradiated or non-irradiated with Er:YAG laser. When erosion with citric acid was performed, Er:YAG laser was not able to reduce enamel wear. Small changes on enamel surface were observed when it was irradiated with Er:YAG laser. It may be concluded that Er:YAG laser irradiation did not reduce the progression of erosive lesions on enamel submitted to in situ erosion with citric acid.
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48
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Acquired pellicle as a modulator for dental erosion. Arch Oral Biol 2014; 59:631-8. [DOI: 10.1016/j.archoralbio.2014.02.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 11/11/2013] [Accepted: 02/04/2014] [Indexed: 11/19/2022]
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49
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Lepri TP, Scatolin RS, Colucci V, De Alexandria AK, Maia LC, Turssi CP, Corona SAM. In Situanalysis of CO2laser irradiation on controlling progression of erosive lesions on dental enamel. Microsc Res Tech 2014; 77:586-93. [DOI: 10.1002/jemt.22377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 04/30/2014] [Accepted: 05/01/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Taísa Penazzo Lepri
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto; University of São Paulo (USP) Avenida do Café; S/N Monte Alegre CEP: 14040-904 Ribeirão Preto-SP Brazil
| | - Renata Siqueira Scatolin
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto; University of São Paulo (USP) Avenida do Café; S/N Monte Alegre CEP: 14040-904 Ribeirão Preto-SP Brazil
| | - Vivian Colucci
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto; University of São Paulo (USP) Avenida do Café; S/N Monte Alegre CEP: 14040-904 Ribeirão Preto-SP Brazil
| | - Adílis Kalina De Alexandria
- Department of Pediatric and Orthodontics, School of Dentistry; Federal University of Rio de Janeiro (UFRJ) Rua Prof.; Rodolpho Paulo Rocco 325 CEP 21941-913 Cidade Universitária-Rio de Janeiro-RJ Brazil
| | - Lucianne Cople Maia
- Department of Pediatric and Orthodontics, School of Dentistry; Federal University of Rio de Janeiro (UFRJ) Rua Prof.; Rodolpho Paulo Rocco 325 CEP 21941-913 Cidade Universitária-Rio de Janeiro-RJ Brazil
| | - Cecília Pedroso Turssi
- Department of Restorative Dentistry; São Leopoldo Mandic Institute and Dental Research Center; Av. José Rocha Junqueira, 13 CEP 13045-755 Campinas-SP Brazil
| | - Silmara Aparecida Milori Corona
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto; University of São Paulo (USP) Avenida do Café; S/N Monte Alegre CEP: 14040-904 Ribeirão Preto-SP Brazil
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50
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Eversole SL, Saunders-Burkhardt K, Faller RV. Erosion protection comparison of stabilised SnF2, mixed fluoride active and SMFP/arginine-containing dentifrices. Int Dent J 2014; 64 Suppl 1:22-8. [DOI: 10.1111/idj.12099] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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