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Lima LC, Silva FRO, Viana ÍEL, Denucci GC, Mumaw CL, Walker C, Hara AT, Scaramucci T, Sochacki SF. Novel resin-based material containing β-tricalcium phosphate nanoparticles for the reduction of dentin permeability. J Dent 2024; 141:104827. [PMID: 38159901 DOI: 10.1016/j.jdent.2023.104827] [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: 09/14/2023] [Revised: 12/11/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024] Open
Abstract
OBJECTIVES To synthesize and characterize a novel dentin adhesive containing Beta-Tricalcium Phosphate (β-TCP) nanoparticles and test its ability to reduce dentin permeability (dP). METHODS Experimental adhesives were prepared by mixing Bis-GMA, TEGDMA, HEMA (50/25/25 wt.%), photo-initiators, and inhibitors. The following groups were tested: Experimental adhesives without β-TCP (Exp.); with 10 wt.% β-TCP (Exp.10 wt.% β-TCP); with 15 wt.% β-TCP (Exp.15 wt.% β-TCP), Scotchbond Multi-Purpose (SBMP) and Clearfil SE Protect Bond (CFPB). Degree of conversion (DC%, 10 and 20 s); Flexural Strength (FS), Knoop Hardness (KHN), and Cell Viability (OD%) tests were performed. dP was evaluated by hydraulic conductance, using human dentin disks (n=12), at three-time intervals: post-EDTA (T0); post-treatment (T1); and post-erosion/abrasion cycling (T2). Data were statistically analyzed (α=0.05). RESULTS For all groups, exposure time for 20 s presented a higher DC% than for 10 s. For FS, filled adhesives did not differ from unfilled and from CFPB. Experimental adhesives did not differ among them and showed lower KHN than the commercial products. Cell viability did not differ among adhesives, except Exp. 15 wt.%, which showed lower OD% than Exp., Exp. 10% and, CFPB. For dP, only Exp.10 and 15 wt.% β-TCP did not present difference between the times T1 and T2. After cycling, Exp.10 wt.% β-TCP presented lower permeability than Exp. and CFPB. CONCLUSIONS The incorporation of 10 wt.% β-TCP nanoparticles into the resin-based dental material did not affect its mechanical properties and biocompatibility, and promoted the greatest reduction in dentin permeability, sustaining this effect under erosive/abrasive challenges. CLINICAL SIGNIFICANCE A novel resin-based dental material containing β-TCP nanoparticles was able to reduce dentin permeability, maintaining its efficacy after erosive/abrasive challenges. The synthesized material did not affect dental pulp cell viability and might be promising for other conditions that require dental remineralization, such as tooth wear and dental caries.
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Affiliation(s)
- Leonardo Custódio Lima
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP 05508-000, Brazil
| | - Flávia Rodrigues Oliveira Silva
- Material Science and Technology Center, Nuclear and Energy Research Institute (IPEN-CNEN), Av. Prof. Lineu Prestes 2242, São Paulo, SP 05508-000, Brazil
| | - Ítallo Emídio Lira Viana
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP 05508-000, Brazil; Department of Comprehensive Care, Division of Operative Dentistry - Tufts University School of Dental Medicine, Boston, MA, USA
| | - Giovanna Corrêa Denucci
- Department of Cariology and Operative Dentistry, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Christen Leigh Mumaw
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Chandler Walker
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Anderson T Hara
- Department of Cariology and Operative Dentistry, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Taís Scaramucci
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP 05508-000, Brazil.
| | - Sabrina Feitosa Sochacki
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
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Simionato AA, Vivanco RG, Tonani-Torrieri R, Arruda CNFD, Pires-de-Souza FCP. Whitening Effect of Different Toothpastes on Bovine Dental Enamel: an in situ study. Braz Dent J 2023; 34:61-70. [PMID: 36888846 PMCID: PMC10027098 DOI: 10.1590/0103-6440202304940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 11/28/2022] [Indexed: 03/08/2023] Open
Abstract
The aim of this in situ study was to evaluate color change, surface roughness, gloss, and microhardness in tooth enamel submitted to whitening and remineralizing toothpastes. Fifteen healthy adults (REBEC - RBR-7p87yr) (with unstimulated salivary flow ≥ 1.5 ml for 5 minutes, pH=7) wore two intraoral devices containing four bovine dental fragments (6 x 6 x 2 mm). Participants were randomly assigned and instructed to toothbrush the devices with the tested toothpastes (30 days): CT: conventional; WT: whitening; WTP: whitening with peroxide, and RT: remineralizing toothpaste. A washout period of 7 days was established. Readouts of color, gloss, surface roughness, and microhardness were performed before and after brushing. The results demonstrated no color, gloss, and microhardness differences (p>0.5). The samples brushed with WTP (0.2(0.7) showed higher surface roughness (p=0.0493) than those with WT (-0.5(1.0). The toothpastes did not alter the properties of the dental enamel, except for the roughness. Toothpaste with an abrasive system based on sodium bicarbonate and silica, and that contains sodium carbonate peroxide increased the surface roughness of the enamel.
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Affiliation(s)
- Anselmo Agostinho Simionato
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Rocío Geng Vivanco
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Rafaella Tonani-Torrieri
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto, SP, Brazil
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Molaasadolah F, Hosseinipour ZS, Afzali F, Parhizkar A, Poorzandpoush K. The effect of two calcium phosphate-containing agents on the enamel resistance of permanent molars to demineralization: An experimental study. Clin Exp Dent Res 2022; 8:1533-1539. [PMID: 35993588 PMCID: PMC9760130 DOI: 10.1002/cre2.649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 08/03/2022] [Accepted: 08/07/2022] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The main purpose of this experimental study was to determine the in vitro effects of two calcium phosphate-containing agents (Remin Pro® and GC Tooth mousse™) on the enamel resistance of permanent molars to demineralization. METHODS Fifty extracted human third molars were randomly divided into four groups; that is the control group and three case groups treated with Remin Pro®, GC Tooth mousse™, and sodium fluoride gel. The three case groups were treated with 0.25 ml of the paste associated with each experimental group for 5 min, kept in fluoride-free artificial saliva, and incubated at 37°C for 28 days. After the treatment regimen, 10 samples of each case group were subjected to demineralization using an acetic acid-containing solution, and remineralization using a remineralizing solution. The morphology of enamel was observed via scanning electron microscopy and their enamel calcium/phosphorus (Ca/P) ratios were measured before/after the demineralization cycle with energy-dispersive X-ray analysis. Data were statistically analyzed using one-way analysis of variance and post hoc Tukey tests. RESULTS The enamel Ca/P ratios in the case study groups were significantly higher than that of the control group before/after the demineralization regimen (p < .0001). However, the ratios were not significantly different between the case study groups after the treatment regimen and demineralization cycle (p > .05). CONCLUSION The outcomes of the current study indicated that all three agents seemed to increase the enamel resistance of permanent molar teeth to demineralization.
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Affiliation(s)
- Fatemeh Molaasadolah
- Department of Pediatric Dentistry, School of DentistryShahid Beheshti University of Medical SciencesTehranIran
| | - Zohre Sadat Hosseinipour
- Department of Pediatric Dentistry, School of DentistryAJA University of Medical SciencesTehranIran
| | | | - Ardavan Parhizkar
- Iranian Centre for Endodontic Research, Research Institute for Dental SciencesShahid Beheshti University of Medical SciencesTehranIran
| | - Kiana Poorzandpoush
- Department of Pediatric Dentistry, School of DentistryShahid Beheshti University of Medical SciencesTehranIran
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DIAGNOdent pen quantification of the synergy of NovaMin® in fluoride toothpaste to remineralize white spot lesions in patients with fixed orthodontic appliances: A double-blind, randomized, controlled clinical trial. Int Orthod 2022; 20:100632. [DOI: 10.1016/j.ortho.2022.100632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/13/2022] [Accepted: 02/20/2022] [Indexed: 01/17/2023]
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Nowak-Wachol A, Korytkowska-Wałach A, Chmiela B, Wachol K, Łopaciński M, Wyszyńska M, Al-Dulaimi Y, Skucha-Nowak M. Yttrium Trifluoride as a Marker of Infiltration Rate of Decalcified Root Cementum: An In Vitro Study. Polymers (Basel) 2022; 14:polym14040780. [PMID: 35215693 PMCID: PMC8880519 DOI: 10.3390/polym14040780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/09/2022] [Accepted: 02/14/2022] [Indexed: 01/27/2023] Open
Abstract
Research related to the development of a dental infiltrant for minimally invasive treatment of initial caries of hard dental tissues is presented. The formulation of the developed infiltrant material includes typical methacrylate monomers used in dentistry, an author’s adhesion monomer containing metronidazole, a photoinitiating system and yttrium trifluoride (YF3). The main objective of the study was to evaluate penetration into decalcified root cementum using scanning electron microscope of an experimental preparation with the characteristics of a dental infiltrant compared to a commercial preparation with the addition of YF3 as a contrast agent. Microscopic observations showed that YF3 particles virtually did not penetrate deep into the root cementum—this was mainly due to the particle size of YF3. Observations of cementum and root dentin tissue infiltration: resin tissue infiltration was visible to a depth of about 80 to 120 μm without the use of a tracer, which, due to agglomeration and particle size, remained on the cementum surface or in the resin used for inlaying. There were no differences between the degree of penetration of an experimental preparation with the characteristics of a dental infiltrant, as compared to a commercial preparation.
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Affiliation(s)
- Anna Nowak-Wachol
- Department of Dental Propedeutics, Division of Medical Sciences in Zabrze, Doctoral School, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland
- Correspondence:
| | - Anna Korytkowska-Wałach
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, ul. Krzywoustego 4, 44-100 Gliwice, Poland;
| | - Bartosz Chmiela
- Department of Materials Technologies, Faculty of Materials Engineering, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland;
| | - Kacper Wachol
- Department of Oral Surgery, Division of Medical Sciences in Zabrze, Medical University of Silesia, 15 Poniatowskiego Street, 40-055 Katowice, Poland;
| | - Maciej Łopaciński
- Department of Periodontal and Oral Mucosa Diseases, Division of Medical Sciences in Zabrze, Medical University of Silesia, 15 Poniatowskiego Street, 40−055 Katowice, Poland;
| | - Magdalena Wyszyńska
- Department of Dental Material Sciences, Division of Medical Sciences in Zabrze, Medical University of Silesia, 15 Poniatowskiego Street, 40−055 Katowice, Poland;
| | - Yousuf Al-Dulaimi
- 5th Year Dentistry Program, Student Scientific Society in Department of Prosthetic Dentistry and Dental Material Sciences, Division of Medical Sciences in Zabrze, Medical University of Silesia, 15 Poniatowskiego Street, 40−055 Katowice, Poland;
| | - Małgorzata Skucha-Nowak
- Department of Dental Propedeutics, Division of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland;
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Wakamatsu K, Kurokawa H, Okuwaki T, Takamizawa T, Tsujimoto A, Shiratsuchi K, Ishii R, Miyazaki M. Ultrasonic measurement of dentin remineralization effects of dentifrices and silver diamine fluoride. Acta Odontol Scand 2021; 79:528-535. [PMID: 33822667 DOI: 10.1080/00016357.2021.1906442] [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] [Indexed: 10/21/2022]
Abstract
OBJECTIVE This study investigated the dentin remineralization effect of the application of a functionalized tri-calcium phosphate (fTCP) dentifrice and a silver diamine fluoride (SDF) solution. MATERIAL AND METHODS The materials used were: a fluoride-containing dentifrice with fTCP (fTCP+), a fluoride-containing dentifrice without fTCP (fTCP-) and a 38% SDF solution. Following treatment, the dentin slabs were immersed in a 0.1-M lactic acid buffer solution and then placed in artificial saliva. This procedure was repeated three times daily for 28 days. The propagation time of longitudinal ultrasonic velocities (UV) and the Knoop hardness (KH) of the samples were measured. The samples were also observed using scanning electron microscopy. RESULTS The SDF and fTCP+ groups showed higher UV than the fTCP - group regardless of the application method. The F-SDF group at 28 days showed significantly higher UV (4121 ± 102 m/s) than the F-fTCP + group (3731 ± 65 m/s) (p < .05). The F-SDF group at 28 days showed significantly higher KH (47.4 ± 2.2) than the F-fTCP+ group (43.3 ± 1.0) and the F-fTCP - group (42.9 ± 2.1) (p < .05). Closure of the dentinal tubules and crystal precipitation was detected on the surface of the fTCP+ group to a greater extent than the fTCP - group. CONCLUSIONS The fTCP-containing dentifrice and SDF solution effectively enhanced bovine dentin remineralization.
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Affiliation(s)
- Kengo Wakamatsu
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Hiroyasu Kurokawa
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Taketo Okuwaki
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Toshiki Takamizawa
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Akimasa Tsujimoto
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Koji Shiratsuchi
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Ryo Ishii
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Masashi Miyazaki
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
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Is there evidence for Novamin application in remineralization?: A Systematic review. J Oral Biol Craniofac Res 2020; 10:87-92. [PMID: 32190542 DOI: 10.1016/j.jobcr.2020.01.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 01/13/2020] [Indexed: 11/23/2022] Open
Abstract
Background Calcium sodium phosphor-silicate material, a type of bio-glass was originally developed as an implant material to regenerate bone and recently adapted for use in oral care products (NovaMin Technology Inc.). Novamin is used for many dental problems like hypersensitivity, gingivitis, bleeding, non-carious lesions, carious lesions, whitening and is currently emerging as one of the treatment modality for the remineralization of the tooth. Since the prescription of these novel materials to the patients are based on cost effectiveness, efficacy and effectiveness, a clinician should make decision based on best available evidence. Hence, the objective of this review is to find out the current evidence available on the use of Novamin as an agent for remineralization. Materials and methods Relevant articles were searched and screened from several databases including PubMed, Cochrane review, Science Direct and trip which were published till 1988 to July 2017; The articles relevant to the objective of this review were included (RCT's) and articles out of interest of this review were excluded. The primary outcome for the chosen studies is the remineralization capacity of Novamin. Data extraction is done independently and jointly by 3 authors using data collection forms. Studies obtained were evaluated using the Cochrane Collaboration tools for accessing risk bias. The assessment of the quality of the evidence and the bias risk was obtained using the Grading of Recommendations Assessment Development and evaluation System. Results The articles from the database obtained for further review was N = 1. According to the study reviewed, the baseline comparisons using decalcification index obtained between Novamin study group (ReNew) and the control group (Crest) yield a P-value of 0.97 whereas after a 3 months interval follow up the value is 0.0403 suggesting there was a trend towards improvement in white spot lesions in the control group and at 6 months' time point the p-value is 0.81 concluding that there are no significant difference of remineralization process obtained by using traditional toothpaste and Novamin. Conclusion Review shows that Novamin has significantly less clinical evidence to prove its effectiveness as a remineralization agent in treating both carious and non-carious lesion. Hence, better designed clinical trials should be carried out in the future before definitive recommendations can be made.
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High fluoride dentifrice for preventing and arresting root caries in community-dwelling older adults: A randomized controlled clinical trial. J Dent 2019; 86:110-117. [DOI: 10.1016/j.jdent.2019.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 06/03/2019] [Accepted: 06/05/2019] [Indexed: 01/14/2023] Open
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Tulumbacı F, Oba AA. Efficacy of different remineralization agents on treating incipient enamel lesions of primary and permanent teeth. J Conserv Dent 2019; 22:281-286. [PMID: 31367114 PMCID: PMC6632635 DOI: 10.4103/jcd.jcd_509_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Aims and Objectives: The aim of this study was to compare the in vitro efficacy of different remineralization (RM) agents on RM of artificial caries by evaluating the density, light reflection, and the crystal size of the newly formed mineral in primary and permanent teeth. Materials and Methods: Caries-free primary and permanent molars were divided into seven groups (n = 20) and treated with: G1 – Deionized water, G2 – Colgate Cavity Protection, G3 – Sensodyne Rapid Relief, G4 – GC MI Paste Plus, G5 – Clinpro Tooth Creme, G6 – Clinpro 5000, and G7 – Sensodyne Repair and Protect. Lesion depths were evaluated using laser fluorescence (DIAGNOdent), and polarized light microscopy (PLM), and the minerals were evaluated using X-ray diffractometry (XRD). Results: The highest decrease in laser fluorescence readings was observed in G6 for both primary and permanent teeth. No significant difference was observed between G2, G4, G5, and G6 in permanent teeth and G4 and G6 in primary teeth (P > 0.05). In PLM analyses, lesions depths were found to be lower in G6 compared to the other groups. No significant difference was observed between G2, G4, and G6 (P < 0.05). XRD evaluation showed that the newly formed mineral in G6 was denser and highly crystallized compared to the other groups. Conclusion: This in vitro study demonstrated that Clinpro 5000 is more efficient in remineralizing incipient enamel lesions compared to the other agents tested.
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Affiliation(s)
- Fatih Tulumbacı
- Department of Pediatric Dentistry, Faculty of Dentistry, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Aylin Akbay Oba
- Department of Pediatric Dentistry, Faculty of Dentistry, Kırıkkale University, Kırıkkale, Turkey
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Manchery N, John J, Nagappan N, Subbiah G, Premnath P. Remineralization potential of dentifrice containing nanohydroxyapatite on artificial carious lesions of enamel: A comparative in vitro study. Dent Res J (Isfahan) 2019. [DOI: 10.4103/1735-3327.266096] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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de Paula B, Alencar C, Ortiz M, Couto R, Araújo J, Silva C. Effect of photobiomodulation with low-level laser therapy combined with potassium nitrate on controlling post-bleaching tooth sensitivity: clinical, randomized, controlled, double-blind, and split-mouth study. Clin Oral Investig 2018; 23:2723-2732. [PMID: 30361793 DOI: 10.1007/s00784-018-2715-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 10/17/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To evaluate the effect of photobiomodulation with low-level laser therapy (PBM-LLLT) combined with 5% potassium nitrate (KNO3) on controlling tooth sensitivity (TS) after in-office tooth bleaching. MATERIALS AND METHODS Fifty volunteers were selected based on the inclusion and exclusion criteria and were randomly allocated into four groups: G1 (control): placebo gel application, 35% hydrogen peroxide bleaching (HP35) and mock PBM-LLLT without light emission; G2: placebo gel application, bleaching with HP35 and PBM-LLLT; G3: application of KNO3, bleaching with HP35 and mock PBM-LLLT; and G4: application of KNO3, bleaching with HP35 and PBM-LLLT. A pain assessment questionnaire was used to evaluate TS during the 21 days of treatment. The Friedman test was used for intragroup analysis, and the Wilcoxon and Mann-Whitney tests were used for intergroup comparisons. RESULTS The intragroup evaluation showed significant differences among the evaluation times in all groups (p ≤ 0.05). The highest pain sensitivity levels were recorded on the 1st, 8th, and 15th days. In G1, TS manifested for up to 3 days after each bleaching session, while G2, G3, and G4 presented TS only on the days of the bleaching sessions. Intergroup analysis showed that TS manifestation differed significantly between G1 and the other groups (p ≤ 0.05) but did not differ significantly among G2, G3, and G4 (p ≥ 0.05). CONCLUSION PBM-LLLT and KNO3 are effective at reducing pain sensitivity after tooth bleaching, but no synergistic effect between these treatments was observed for the different evaluation periods. CLINICAL RELEVANCE The effect of PBM-LLLT combined with KNO3 on post-bleaching tooth sensitivity is similar to their individual use alone.
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Affiliation(s)
- Brennda de Paula
- Graduate Program in Dentistry, Federal University of Pará, Belém, PA, Brazil
| | - Cristiane Alencar
- Graduate Program in Dentistry, Federal University of Pará, Belém, PA, Brazil
| | - Mariángela Ortiz
- Graduate Program in Dentistry, Federal University of Pará, Belém, PA, Brazil
| | - Roberta Couto
- Graduate Program in Dentistry, Federal University of Pará, Belém, PA, Brazil
| | - Jesuína Araújo
- School of Dentistry, Federal University of Pará, Belém, PA, Brazil
| | - Cecy Silva
- Graduate Program in Dentistry, Federal University of Pará, Belém, PA, Brazil. .,Faculdade de Odontologia, Universidade Federal do Pará, Avenida Augusto Correa, no 1, Guamá, Belém, PA, 66075-110, Brazil.
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Aguiar JD, Medeiros IS, Souza Junior MHSE, Loretto SC. Influence of the Extended Use of Desensitizing Toothpastes on Dentin Bonding, Microhardness and Roughness. Braz Dent J 2018; 28:346-353. [PMID: 29297556 DOI: 10.1590/0103-6440201601292] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 03/14/2017] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to evaluate the influence of an extended use of desensitizing toothpastes (DTs) on dentin bonding, microhardness and roughness. One hundred and twenty bovine incisor teeth were randomly divided into four groups: G1, distilled water (WATER); G2, Colgate Total 12 (CT12); G3, Colgate Sensitive Pro-Relief (CSPR); and G4, Sensodyne Repair ?αμπ; Protect (SRP). Dentin surfaces were etched with 17% EDTA and 2 years of simulated tooth brushing (20,000 cycles) was performed on their surfaces. Knoop microhardness, surface roughness and scanning electron microscopy (SEM) were performed before and after the simulated tooth brushing. For microshear bonding test, a 2-step self-etching adhesive system (Clearfil SE Bond) was used and 0.8 mm diameter composite resin (Filtek Z350 XT) cylinders were built. Microshear test was performed with an orthodontic wire and with a crosshead speed of 0.5 mm/min. The data were analyzed for: 1) bond strength (one-way ANOVA), 2) microhardness intra-group (Student's test) and inter-group (one-way ANOVA/Tukey's test) comparisons, 3) roughness intra-group (Student's test/Wilcoxon's test) and inter-group (Kruskal-Wallis/Student-Newman-Keuls test) comparisons. The extended use of both dentifrices (conventional and for sensitive teeth) did not affect the bond strength and produced a significant increase in microhardness and roughness of the dentin, except for the microhardness of the SRP group. The simulated tooth brushing technique with water produced an increase in roughness, without reducing significantly the dentin microhardness.
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Affiliation(s)
- Juliana Dias Aguiar
- Department of Biomaterials and Oral Biology, Dental School, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Igor Studart Medeiros
- Department of Biomaterials and Oral Biology, Dental School, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - Sandro Cordeiro Loretto
- Department of Restorative Dentistry, Dental School, UFPA - Universidade Federal do Pará, Belém, PA, Brazil
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Alencar CDM, De Paula BLF, Araújo JLN, Alves EB, De Albuquerque Jassé FF, Silva CM. Effect of low-level laser therapy combined with 5000 parts per million fluoride dentifrice on postbleaching sensitivity: A clinical, randomized, and double-blind study. J ESTHET RESTOR DENT 2018; 30:352-359. [PMID: 30079637 DOI: 10.1111/jerd.12386] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 01/26/2023]
Abstract
OBJECTIVE The aim of this double-blind, randomized, controlled clinical study was to assess the efficacy of low-level laser therapy (LLLT) combined with 5000 ppm fluoride dentifrice on postbleaching sensitivity in teeth exposed to 35% hydrogen peroxide for four weeks. MATERIALS AND METHODS Twenty-five volunteers were evaluated using the split-mouth model in which the right and left maxillary/mandibular quadrants were randomized and allocated to one of two groups: GPLACEBO, in which the laser tip was positioned without the emission of light (placebo effect) + 5000 ppm sodium fluoride, or GLASER, which comprised LLLT + 5000 ppm sodium fluoride. For both groups, LLLT and placebo were used before bleaching, whereas fluoride was applied after bleaching. LLLT was applied at two points: on the central cervical and medial regions of the incisors, canines, and premolars in the corresponding hemi-arch. At each point, 60 J/cm2 was applied for 16 seconds with an irradiance of 3.75 W/cm2 using the therapeutic infrared device. To assess tooth sensitivity, a modified visual analogue scale was used after an evaporative stimulus, and a daily pain questionnaire was also applied. RESULTS The Wilcoxon and Friedman tests demonstrated a significant difference in the incidence of sensitivity pain between GPLACEBO and GLASER (P ≤ .05), with different evaluation times. CONCLUSION Teeth treated with laser therapy in combination with the topical use of sodium fluoride at each bleaching session demonstrated less sensitivity compared with the application of sodium fluoride only. CLINICAL SIGNIFICANCE The use of a low-level laser therapy in combination with topical use of sodium fluoride improves symptoms of dentin sensitivity at each bleaching session.
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Affiliation(s)
- Cristiane De Melo Alencar
- Department of restorative dentistry, School of Dentistry, Federal University of Pará, Belém, Pará, Brazil
| | | | | | - Eliane Bemerguy Alves
- Department of restorative dentistry, School of Dentistry, Federal University of Pará, Belém, Pará, Brazil
| | | | - Cecy Martins Silva
- Department of restorative dentistry, School of Dentistry, Federal University of Pará, Belém, Pará, Brazil
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Han J, Qiu W, Campbell EC, White JC, Xing B. Nylon Bristles and Elastomers Retain Centigram Levels of Triclosan and Other Chemicals from Toothpastes: Accumulation and Uncontrolled Release. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:12264-12273. [PMID: 29067803 DOI: 10.1021/acs.est.7b02839] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Triclosan (TCS), a broad-spectrum antimicrobial, is used in commercial toothpastes with reported dental benefits. Our studies on 22 popular manual toothbrushes in the U.S. showed that common toothbrush head components can accumulate substantial amounts of TCS after brushing with TCS-formulated toothpastes (TCS-TPs). After simulated 3-month brushing with a commercial best-selling TCS-TP, over one third of the adults' toothbrushes showed a cumulative TCS uptake of 21-37.5 mg, equivalent to 7-12.5 doses of the TCS used per brushing. Similar results were observed on children's toothbrushes with small pea-size heads. Elastomer components were found to be the main contributor while both nylon bristles and elastomers could act as absorptive sinks for TCS during brushing. Studies on six different TCS-TPs containing 0.3 wt% TCS showed similar profiles of TCS accumulation. The absorbed TCS was gradually released into toothpaste slurries after switching to TCS-free alternatives. Release of TCS, which typically measured at a fraction (<75%) of the standard dose using the TCS-TPs, continued for over 2 weeks and occurred most rapidly in peroxide-containing "whitening" toothpastes, followed by alkaline and surfactant-rich toothpastes. The accumulating effect was not exclusive to TCS but was commonly observed on several chemicals identified in TCS-TPs and a range of regular toothpastes.
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Affiliation(s)
- Jie Han
- Paige Laboratory, Stockbridge School of Agriculture, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Department of Chemical and Materials Engineering, The University of Auckland , Auckland 1010, New Zealand
| | - Wei Qiu
- Paige Laboratory, Stockbridge School of Agriculture, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Department of Chemical and Materials Engineering, The University of Auckland , Auckland 1010, New Zealand
| | - Elizabeth C Campbell
- Paige Laboratory, Stockbridge School of Agriculture, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Jason C White
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station , New Haven, Connecticut 06504, United States
| | - Baoshan Xing
- Paige Laboratory, Stockbridge School of Agriculture, University of Massachusetts , Amherst, Massachusetts 01003, United States
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15
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Cai J, Palamara JEA, Manton DJ, Burrow MF. Status and progress of treatment methods for root caries in the last decade: a literature review. Aust Dent J 2017; 63:34-54. [DOI: 10.1111/adj.12550] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2017] [Indexed: 12/26/2022]
Affiliation(s)
- J Cai
- Melbourne Dental School; The University of Melbourne; Melbourne Victoria Australia
| | - JEA Palamara
- Melbourne Dental School; The University of Melbourne; Melbourne Victoria Australia
| | - DJ Manton
- Melbourne Dental School; The University of Melbourne; Melbourne Victoria Australia
| | - MF Burrow
- Melbourne Dental School; The University of Melbourne; Melbourne Victoria Australia
- Faculty of Dentistry; The University of Hong Kong; Hong Kong China
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16
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Soares R, De Ataide IDN, Fernandes M, Lambor R. Assessment of Enamel Remineralisation After Treatment with Four Different Remineralising Agents: A Scanning Electron Microscopy (SEM) Study. J Clin Diagn Res 2017; 11:ZC136-ZC141. [PMID: 28571281 DOI: 10.7860/jcdr/2017/23594.9758] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 01/20/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Decades of research has helped to increase our knowledge of dental caries and reduce its prevalence. However, according to World Oral Health report, dental caries still remains a major dental disease. Fluoride therapy has been utilised in a big way to halt caries progression, but has been met with limitations. This has paved the way for the development of newer preventive agents that can function as an adjunct to fluoride or independent of it. AIM The purpose of the present study was to evaluate the ability of Casein Phosphopeptide-Amorphous Calcium Phosphate Fluoride (CPP ACPF), Bioactive Glass (BAG), fluoride enhanced Hydroxyapatite (HA) gel and self-assembling peptide P11-4 to remineralise artificial carious lesions in enamel in vitro using a 30 day pH cycling model through surface microhardness analysis and SEM. MATERIALS AND METHODS Sixty enamel samples were divided into five groups of 12 samples each. The control Group A consisted of intact enamel samples, Group B: CPP-ACPF (Tooth Mousse Plus), Group C: BAG (SHY- NM), Group D: fluoride enhanced HA gel (ReminPro) and Group E: Self-assembling peptide P11-4 (Curodont Protect). All groups excluding the control group were subjected to demineralisation following which four of these groups were remineralised using the four remineralising agents. The treated groups were subjected to pH cycling over a period of 30 days. This was followed by assessment of surface microhardness and SEM for qualitative evaluation of surface changes. The results were analysed by One-Way Analysis Of Variance (ANOVA). Multiple comparisons between groups were performed by paired t-test and post-hoc Tukey test. RESULTS The results of the study revealed that remineralisation of enamel was the highest in samples of Group E (Self assembling peptide P11-4) followed by Group B (CPP-ACPF), Group C (BAG) and Group D (fluoride enhanced HA gel). There was a significant difference (p<0.05) in the remineralising ability between the self assembling peptide P11-4 group and BAG and fluoride enhanced HA gel group. Although no significant difference was observed between the self assembling peptide P11-4 and CPP-ACPF group, the self assembling peptide P11-4 remineralised the enamel lesions more effectively. SEM photomicrographs of the test groups demonstrated either amorphous crystals or particles scattered on the surface or lines of remineralisation along the prismatic borders. CONCLUSION Self assembling peptide P11-4 demonstrated promising results by effectively and significantly remineralising the enamel lesions as compared to other test agents.
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Affiliation(s)
- Renita Soares
- Senior Resident, Deprtment of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Goa, India
| | - Ida De Noronha De Ataide
- Professor and Head of Deprtment, Deprtment of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Goa, India
| | - Marina Fernandes
- Assistant Professor, Deprtment of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Goa, India
| | - Rajan Lambor
- Assistant Professor, Deprtment of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Goa, India
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17
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Matsuyoshi S, Murayama R, Akiba S, Yabuki C, Takamizawa T, Kurokawa H, Miyazaki M. Enamel remineralization effect of a dentifrice containing calcium sodium phosphosilicate: an optical coherence tomography observation. Acta Odontol Scand 2017; 75:191-197. [PMID: 28090810 DOI: 10.1080/00016357.2016.1277588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The purpose of this study was to examine the effects of a dentifrice containing 5% calcium sodium phosphosilicate (CSP) on the remineralization of the enamel using optical coherence tomography (OCT). MATERIALS AND METHODS Bovine incisors were sliced and shaped in a rectangular form. One group of five specimens was treated with undersaturated 0.1 M lactic acid buffer solution (pH 4.75) for 10 min and then placed in artificial saliva (pH 7.0) (De group). Other specimens were stored in solutions of toothpaste containing CSP for 10 min, followed by 10-min immersion in the lactic acid buffer solution twice a day before storage in artificial saliva (CSP group). An additional group was stored in only artificial saliva (control group). OCT imaging on the selected location of the enamel surface was performed. The peak intensity and width at 1/e2 were recorded in each of the six areas on the sample and averaged, and the sample size of each group was six. The integrated value in units (dB × μm) was calculated in the area of peak intensity. The data for each group was subjected to one-way repeated-measures ANOVA and Tukey HSD tests (α = 0.05). RESULTS The changes in integrated values of each group were different. A slight but significant increase in the integrated value was observed in the control group, whereas a slight but significant decrease in the value was observed the De group. Integrated values increased in the CSP group. CONCLUSIONS Remineralization occurred upon immersion in the toothpaste containing CSP.
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Affiliation(s)
- Saki Matsuyoshi
- Department of Operative Dentistry, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan
| | - Ryosuke Murayama
- Department of Operative Dentistry, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan
| | - Shunsuke Akiba
- Department of Operative Dentistry, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan
| | - Chiaki Yabuki
- Department of Operative Dentistry, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan
| | - Toshiki Takamizawa
- Department of Operative Dentistry, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan
| | - Hiroyasu Kurokawa
- Department of Operative Dentistry, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan
| | - Masashi Miyazaki
- Department of Operative Dentistry, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan
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18
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Xia W, Qin T, Suska F, Engqvist H. Bioactive Spheres: The Way of Treating Dentin Hypersensitivity. ACS Biomater Sci Eng 2016; 2:734-740. [DOI: 10.1021/acsbiomaterials.5b00499] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Wei Xia
- Applied
Materials Science, Department of Engineering Sciences, Uppsala University, Lägerddsv 1, 75120 Uppsala, Sweden
| | - Tao Qin
- Applied
Materials Science, Department of Engineering Sciences, Uppsala University, Lägerddsv 1, 75120 Uppsala, Sweden
| | - Felicia Suska
- Department
of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Arvid
Wallgrens Backe 20, 40530 Göteborg, Sweden
| | - Håkan Engqvist
- Applied
Materials Science, Department of Engineering Sciences, Uppsala University, Lägerddsv 1, 75120 Uppsala, Sweden
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Altinci P, Mutluay M, Seseogullari-Dirihan R, Pashley D, Tjäderhane L, Tezvergil-Mutluay A. NaF Inhibits Matrix-Bound Cathepsin-Mediated Dentin Matrix Degradation. Caries Res 2016; 50:124-32. [DOI: 10.1159/000444222] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 01/24/2016] [Indexed: 11/19/2022] Open
Abstract
Matrix metalloproteinases (MMPs) and cysteine cathepsins (CCs) degrade the collagen fibrils of demineralized dentin. Sodium fluoride (NaF) has previously been shown to inhibit recombinant MMP-2 and MMP-9. This study aimed to evaluate the efficacy of NaF on the inhibition of dentin-bound MMPs and CCs. Dentin beams were completely demineralized in 10% phosphoric acid. The baseline total MMP activity and dry masses were measured. Beams were assigned to test groups based on similar MMP activity and dry mass (n = 10/group), and incubated in artificial saliva (control) or artificial saliva with NaF containing 6-238 mM fluoride for 1, 7 and 21 days. The dry mass loss and MMP activities were reassessed at each time point. The proteolytic activity was screened by gelatin zymography. ICTP and CTX released to the incubation medium were analyzed as indices of MMP and cathepsin K activity, respectively. The beams were examined under scanning electron microscopy. All NaF doses reduced the dry mass loss after 21 days (p < 0.05). NaF inhibition of the total MMP activity ranged between 5 and 80%. In gelatin zymography, the bands of MMP-2 and MMP-9 became less prominent with increasing NaF levels. NaF did not decrease the released ICTP (p > 0.05). Less CTX release was detected with F ≥179 mM (p < 0.05). CaF2-like minerals were observed on the beams. High levels of NaF may slow the degradation of the dentin matrix due to the inhibition of cathepsin K. Fluoride does not seem effective in the direct inhibition of proteolysis by dentin matrix-bound MMPs.
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20
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Hoffman DA, Clark AE, Rody WJ, McGorray SP, Wheeler TT. A prospective randomized clinical trial into the capacity of a toothpaste containing NovaMin to prevent white spot lesions and gingivitis during orthodontic treatment. Prog Orthod 2015; 16:25. [PMID: 26268772 PMCID: PMC4534479 DOI: 10.1186/s40510-015-0095-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 08/04/2015] [Indexed: 11/10/2022] Open
Abstract
Background White spot lesions and gingivitis represent common, yet challenging, dilemmas for orthodontists. Fluoride has shown some benefit as a protective measure against demineralization; however, this is usually insufficient for orthodontic patients with less than ideal oral hygiene. Dentifrices containing calcium sodium phosphosilicate bioactive glass (NovaMin) have been proposed to aid in prevention of white spot lesions and gingival inflammation. Thus, the purpose of this study was to determine if the use of NovaMin reduces the formation of white spot lesions and improves gingival health in orthodontic patients. Methods This was a prospective, double-blind, randomized controlled trial. Forty-eight patients undergoing orthodontic treatment were randomly allocated to two groups. The control group consisted of 24 patients who received over-the-counter fluoride toothpaste (Crest®), while the study group consisted of 24 patients who were given the test dentifrice (ReNew™) containing 5 % NovaMin and fluoride. Patients were followed up for 6 months on a monthly basis. Decalcification, gingival health, plaque, and bacteria levels were evaluated every 3 months. Statistical analysis was performed using both parametric and non-parametric tests to identify differences between groups at different time points. Results There were no significant differences between the groups in regard to changes in white spot lesions, plaque, or gingival health (P > 0.05). There was a trend toward improvement in white spot lesions found in subjects using Crest® at the 3-month time point; however, this was not sustained throughout the study. Conclusions Our results indicate that a toothpaste containing NovaMin does not differ significantly compared to traditional fluoride toothpaste for improving white spot lesions and gingivitis in orthodontic patients.
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Affiliation(s)
- Derek A Hoffman
- Department of Orthodontics, College of Dentistry, University of Florida, PO Box 100444, Gainesville, FL, USA,
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21
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Pinto SCS, Bandéca MC, Pinheiro MC, Cavassim R, Tonetto MR, Borges AH, Sampaio JEC. Preventive effect of a high fluoride toothpaste and arginine-carbonate toothpaste on dentinal tubules exposure followed by acid challenge: a dentine permeability evaluation. BMC Res Notes 2014; 7:385. [PMID: 24958423 PMCID: PMC4105831 DOI: 10.1186/1756-0500-7-385] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 06/20/2014] [Indexed: 11/23/2022] Open
Abstract
Background Considering the current high use of high fluoride toothpastes, the aim of the study was to quantify alterations in the root dentine permeability submitted to treatment with a high fluoride toothpaste and 8% arginine, calcium carbonate, sodium monofluorophosphate toothpaste as a preventive treatment for dentinal tubules exposure followed by acid challenge. Methods Thirty-third molars were sectioned below the cementoenamel. The root segments were connected to a hydraulic pressure apparatus to measure dentine permeability after the following sequential steps (n = 10 per group): I) Baseline; II) treatment with phosphoric acid for 30 s (maximum permeability); III) Toothbrushing (1 min) according to the experimental groups (G1- control; G2- 5000 ppm fluoride toothpaste; G3- 8% arginine-calcium carbonate toothpaste); IV) acid challenge for 5 min (orange juice). The data were converted into percentage, considering stage II as 100%. Results The results have shown a statistically significant decreasing on dentine permeability after treatment with toothpaste (Friedman test and Dunn’s post hoc test). Comparison among groups demonstrated a high increasing on dentine permeability when acid challenge was performed after toothbrushing with distilled water (control group) (Kruskal-Wallis and Dunn’s post hoc test). Conclusion The toothpaste treatment may provide sufficient resistance on dentine surface, preventing dentinal tubules exposure after acid challenge.
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Affiliation(s)
| | - Matheus Coelho Bandéca
- Department of Post-Graduate Program in Dentistry, CEUMA University, Sao Luis, MA, Brazil.
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Bakry AS, Marghalani HY, Amin OA, Tagami J. The effect of a bioglass paste on enamel exposed to erosive challenge. J Dent 2014; 42:1458-63. [PMID: 24907559 DOI: 10.1016/j.jdent.2014.05.014] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 05/24/2014] [Accepted: 05/27/2014] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES The current study is evaluating the effect of using a 45S5 bioglass paste and topical fluoride application on the cross sectional micro-hardness and the chemical surface changes of eroded enamel. METHODS Enamel discs were obtained from the buccal surface of one hundred extracted human non-carious third molars. The enamel surfaces were ground flat and each disc was coated with two layers of acid resistant nail varnish except for an exposed treatment window (3mm×2mm) on the buccal surface of the tooth. All specimens were challenged for 60 min by orange juice (Tropicana, Chicago, USA) pH 3.85+0.5. The specimens were divided into four groups: the 45S5 bioglass paste group, fluoride gel group (5 min application), fluoride gel group (24h application) while the rest of specimens served as control. The cross-sectional micro-hardness of 20 specimens from each group was measured. Five specimens from each group had their top eroded enamel surfaces examined by SEM-EDS. One-way ANOVA was used to compare the cross-sectional micro-hardness of the three groups p<0.05. RESULTS 45S5 bioglass paste application significantly improved the sub-surface eroded enamel when compared to fluoride and control specimens (p<0.05). CONCLUSION 45S5 bioglass paste can efficiently improve the micro-hardness of the sub-surface eroded enamel surface. CLINICAL SIGNIFICANCE The use of the 45S5 Bioglass paste can be used efficiently as a potent remineralizing agent for the sub-surface enamel lesions resulting from erosive challenges.
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Affiliation(s)
- Ahmed Samir Bakry
- Operative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudia Arabia; Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Egypt; Japan Society for the Promotion of Science, Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
| | - Hanadi Y Marghalani
- Operative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudia Arabia
| | - Omayma A Amin
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudia Arabia; Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Alexandria University, Egypt
| | - Junji Tagami
- Cariology and Operative Dentistry Department, Global Center of Excellence Program, Tokyo Medical and Dental University, Japan
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Poggio C, Lombardini M, Vigorelli P, Colombo M, Chiesa M. The role of different toothpastes on preventing dentin erosion: an SEM and AFM study®. SCANNING 2014; 36:301-310. [PMID: 23784952 DOI: 10.1002/sca.21105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 05/09/2013] [Indexed: 06/02/2023]
Abstract
The aim of the present in vitro study was the evaluation of new formulation toothpastes on preventing dentin erosion produced by a soft drink (Coca Cola®), using atomic force microscopy (AFM) and scanning electron microscopy (SEM). Fifty dentin specimens were divided in treatment and control halves and were than assigned to 5 groups of 10 specimens each: group 1a: intact dentin, group 1b: dentin + soft drink, group 2a: intact dentin + Biorepair Plus-Sensitive Teeth®, group 2b: dentin + soft drink + Biorepair Plus-Sensitive Teeth®, group 3a: intact dentin + Biorepair Plus-Total Protection®, group 3b: dentin + soft drink + Biorepair Plus-Total Protection®, group 4a: intact dentin + Sensodyne Repair & Protect®, group 4b: dentin + soft drink + Sensodyne Repair & Protect®, group 5a: intact dentin + Colgate Sensitive Pro Relief®, group 5b: dentin + soft drink + Colgate Sensitive Pro Relief®. The surface of each specimen was imaged by AFM and SEM. Comparing specimens of group a and b (no demineralization and demineralization), a statistically significant difference (p < 0.01) in Rrms values was registered. Comparing b groups, all the analyzed toothpastes tended to remineralize the dentine surface in different extent. Biorepair Plus-Total Protection® and Sensodyne Repair & Protect® provided higher protective effect against dentin demineralization.
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Affiliation(s)
- Claudio Poggio
- Department of Operative Dentistry, Policlinico "San Matteo", Pavia, Italy
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24
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Elkassas D, Arafa A. Remineralizing efficacy of different calcium-phosphate and fluoride based delivery vehicles on artificial caries like enamel lesions. J Dent 2014; 42:466-74. [DOI: 10.1016/j.jdent.2013.12.017] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/30/2013] [Accepted: 12/31/2013] [Indexed: 11/16/2022] Open
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Balakrishnan A, Jonathan R, Benin P, Kuumar A. Evaluation to determine the caries remineralization potential of three dentifrices: An in vitro study. J Conserv Dent 2013; 16:375-9. [PMID: 23956545 PMCID: PMC3740654 DOI: 10.4103/0972-0707.114347] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 04/08/2013] [Accepted: 05/05/2013] [Indexed: 11/08/2022] Open
Abstract
Aim: The aim of this study was to evaluate the remineralizing potential of three different remineralizing agents (GC tooth Mousse, Clinpro tooth crθme and SHY-NM) on demineralized tooth surfaces using micro CT and microhardness. Materials and Methods: Forty five freshly extracted mandibular premolars were collected and enamel specimens were prepared. The samples were assigned to three groups with fifteen specimens in each group. The specimens were then demineralized using McInne's demineralizing solution in two cycles. After that, remineralization was carried out in two cycles for 30 days using Casein phosphopeptide - Amorphous calcium phosphate (CPP - ACP), 0.21% sodium fluoride - Tricalcium phosphate (f-TCP) and Calcium Sodium Phosphosilicate (CSP) containing tooth pastes for groups I, II, III respectively. The specimens were evaluated for Linear attenuation co-efficient using micro CT (Scanco™) and Vicker's Micro Hardness (Schimadzu™) testing at different time periods. The results were tabulated and statistically analysed. Results: It was observed that all the three remineralizing agents used in the study significantly increased the Linear Attenuation Co-efficient and Vicker's hardness number values of the enamel specimens following 15 days and 30 days application. Conclusion: CPP – ACP showed the better remineralizing potential than the other two agents and there was no statistical significant difference between f-TCP and CSP groups.
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Affiliation(s)
- Arun Balakrishnan
- Department of Conservative Dentistry and Endodontics, Rajas Dental College, Tirunelveli, Tamil Nadu, India
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Utaka S, Nakashima S, Sadr A, Ikeda M, Nikaido T, Shimizu A, Tagami J. Cariotester, a new device for assessment of dentin lesion remineralization in vitro. Dent Mater J 2013; 32:241-7. [PMID: 23538759 DOI: 10.4012/dmj.2012-275] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study aimed to evaluate the potential of a new device (Cariotester) for monitoring of incipient carious lesion remineralization in root dentin by topical fluoride in vitro. Demineralized bovine dentin specimens were treated by fluoride solutions (APF or neutral NaF) and remineralized for 4 weeks. Cariotester was used to measure penetration depth (CTR depth) of the indenter into the de- and remineralized specimen surface. The specimens were assessed by transverse microradiography (TMR) to determine lesion parameters (depth: LD, mineral loss: ΔZ). Pearson's correlation analysis showed an overall significant relationship between CTR depth and both TMR parameters. CTR depth appeared to distinguish the positive effect that topical fluoride application had on the remineralization of the outer zone of dentin lesions. Cariotester had the potential to serve as a quantitative tool for monitoring of incipient carious lesion remineralization in root dentin.
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Affiliation(s)
- Sachiko Utaka
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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de Francisco LMB, Cerquetani JA, Bruschi ML. Development and characterization of gelatin and ethylcellulose microparticles designed as platforms to delivery fluoride. Drug Dev Ind Pharm 2012; 39:1644-50. [PMID: 23034061 DOI: 10.3109/03639045.2012.728610] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE To develop and characterize microparticles containing fluoride sources (FS) from sodium fluoride, sodium monofluorophosphate (MFP) or aminofluoride and evaluate their characteristics as fluoride delivery systems. METHODS Ethylcellulose microparticles containing fluoride (EM) were prepared by emulsification of ethyl acetate dispersion containing polymer and FS (ethylcellulose:FS ratio of 1:0.25 wt/wt) with aqueous external phase containing polysorbate 80 (0.8% vol/vol) using the volume ratio (organic:aqueous) of 1:5. The organic solvent was evaporated; microparticles were collected by centrifuging, washed with deionized water and freeze-dried. Gelatin microparticles containing FS (GM) was obtained by dispersion of the natural polymer in water, adding FS (6:1 wt/wt) and 20% (wt/wt) of mannitol. The final dispersions were spray-dried. Particle morphology and size were investigated using optical microscopy. The content of fluoride ions in the microparticles was quantified using a potentiometric method. The encapsulation efficiency and in vitro release profile of fluoride was also determined. RESULTS Microparticles exhibited polydispersity and mean diameters <145.35 and <124.22 µm for EM and GM, respectively. Considering the entrapment efficiency, the spray-drying technique exhibited greater values than microencapsulation by emulsification and solvent evaporation. The release profile of fluoride ions from microparticles was shown to be modified, fitted first order and guided by Fickian diffusion. CONCLUSIONS Microparticles prepared with ethylcellulose or gelatin can be used as platform for oral delivery of fluoride, providing a means to increase the local supply of this ion in a controlled manner, providing an increased protection against caries. Moreover, further investigations are needed to demonstrate this property in vivo.
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Affiliation(s)
- Lizziane M B de Francisco
- Laboratory of Research and Development of Drug Delivery System, Graduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringá , Maringá, Paraná , Brazil
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Diamanti I, Koletsi-Kounari H, Mamai-Homata E, Vougiouklakis G. In vitro evaluation of fluoride and calcium sodium phosphosilicate toothpastes, on root dentine caries lesions. J Dent 2011; 39:619-28. [DOI: 10.1016/j.jdent.2011.06.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Revised: 06/26/2011] [Accepted: 06/27/2011] [Indexed: 11/30/2022] Open
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Lim BS, Lee SJ, Lim YJ, Ahn SJ. Effects of periodic fluoride treatment on fluoride ion release from fresh orthodontic adhesives. J Dent 2011; 39:788-94. [PMID: 21896303 DOI: 10.1016/j.jdent.2011.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 08/03/2011] [Accepted: 08/22/2011] [Indexed: 10/17/2022] Open
Abstract
OBJECTIVE Periodic fluoride treatment may contribute to the ability of fresh orthodontic adhesives to provide long-term F(-) release. The effects of periodic fluoride treatment on the amount of F(-) release from fresh orthodontic adhesives was investigated. METHODS F(-) release was measured from a nonfluoride-releasing composite, a fluoride-releasing composite, a polyacid-modified composite (compomer), and two resin-modified glass-ionomer cements (RMGICs) at 1, 2, and 5 days after one of the following treatments: 225 ppm F(-) solution, 900 ppm F(-) solution, acidulated phosphate fluoride gel (APF), fluoridated dentifrice, and deionised water (control). F(-) release was measured in a 5-day cycle, which was repeated 9 consecutive times. The amount of F(-) release for each group was analysed using the repeated measures analysis of variance. Statistical significance was set at a level of α=0.05. RESULTS Periodic fluoride treatment temporarily increased F(-) release in fresh fluoride-releasing orthodontic adhesives, but not in fresh nonfluoride-releasing composite. The order of effective fluoride-release was RMGICs>compomer>fluoride-releasing composite>nonfluoride-releasing composite. The application of APF or 900 ppm F(-) solution was the most effective way to maintain F(-) release from fresh orthodontic adhesives. However, the amount of F(-) release gradually decreased with increasing specimen age. CONCLUSION Given the difficulty of routine use of APF at home, the results of this study show that a combination of RMGICs and high-dose fluoride mouth rinse is the most effective protocol to maintain F(-) release from fresh orthodontic adhesives. CLINICAL SIGNIFICANCE Most studies have investigated fluoride-uptake abilities using aged materials in which fluoride had been lost for at least 1 month. This study has found that periodic fluoride treatment altered the conventional F(-) release pattern of fresh fluoride-releasing materials and type of fluoride-containing medium plays a more critical role in fluoride recharging of the materials than fluoride concentration. This study will help clinicians to find the most effective fluoride treatment protocol of fresh materials.
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Affiliation(s)
- Bum-Soon Lim
- Dental Research Institute and Department of Dental Biomaterials, School of Dentistry, Seoul National University, 28-22 Yungeon-Dong, Jongro-Gu, Seoul 110-768, Republic of Korea
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