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Gruba AS, Nunes GP, Marques MT, Danelon M, Alves RDO, de Toledo PTA, Briso ALF, Delbem ACB. Influence of bleaching gels formulated with nano-sized sodium trimetaphosphate and fluoride on the physicochemical, mechanical, and morphological properties of dental enamel. J Dent 2023; 139:104743. [PMID: 37839624 DOI: 10.1016/j.jdent.2023.104743] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/02/2023] [Accepted: 10/12/2023] [Indexed: 10/17/2023] Open
Abstract
OBJECTIVES To evaluate in vitro the effects of sodium fluoride (F) and nano-sized sodium trimetaphosphate (TMPnano) added to a 35% hydrogen peroxide (H2O2) bleaching gel on the color alteration, enamel mechanical and morphological properties, and H2O2 transamelodentinal diffusion. MATERIALS AND METHODS Bovine enamel/dentin discs (n = 180) were divided according to the bleaching gel: 35% H2O2 (HP); 35% H2O2 + 0.1% F (HP/F); 35% H2O2 + 1% TMPnano (HP/TMPnano); 35% H2O2 + 0.1% F + 1% TMPnano (HP/F/TMPnano) and 35% H2O2 + 2% calcium gluconate (HP/Ca). The gels were applied 3 times by 40 min; once each 7-day. The Commission Internationale de l'Eclairage (CIE) L*a*b* total color alteration (ΔE), color alteration by CIEDE2000 (ΔE00), whitening index (ΔWID), surface (SH) and cross-sectional hardness (ΔKHN), surface roughness (Ra), and transamelodentinal diffusion were determined. Enamel surfaces were evaluated by Scanning Electron Microscopy (SEM) and X-ray Dispersive Energy (EDX). Data were submitted to ANOVA, followed by the Student-Newman-Keuls test (p <0.05). RESULTS ΔE, ΔE00, and ΔWID were similar among the gels that promoted a bleaching effect after treatment (p <0.001). Mineral loss (SH and ΔKHN), Ra, and H2O2 diffusion were lower for HP/F/TMPnano; the HP and HP/Ca groups presented the highest values (p <0.001). For SEM/EDX, surface changes were observed in all bleached groups, but less intense with TMPnano. CONCLUSIONS Gels containing F/TMPnano do not interfere with the bleaching effect and reduce enamel demineralization, roughness, H2O2 diffusion, and morphological changes. CLINICAL RELEVANCE Whitening gels containing F/TMPnano can be used as a new strategy to increase safety and maintain clinical performance.
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Affiliation(s)
- Amanda Scarpin Gruba
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Gabriel Pereira Nunes
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Mariana Takatu Marques
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Marcelle Danelon
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Renata de Oliveira Alves
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Priscila Toninatto Alves de Toledo
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - André Luiz Fraga Briso
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Alberto Carlos Botazzo Delbem
- Department of Preventive and Restorative Dentistry, Araçatuba School of Dentistry, Sao Paulo State University (UNESP), Araçatuba, SP, Brazil.
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Heshmat H, Kazemi H, Hoorizad Ganjkar M, Chaboki F, Shokri M, Kharazifard MJ. Effect of Two Remineralizing Agents on Dentin Microhardness of Non-Caries Lesions. JOURNAL OF DENTISTRY (SHIRAZ, IRAN) 2023; 24:417-421. [PMID: 38149233 PMCID: PMC10749432 DOI: 10.30476/dentjods.2023.95663.1883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 12/17/2022] [Accepted: 01/14/2023] [Indexed: 12/28/2023]
Abstract
Statement of the Problem The prevalence of non-carious dentin lesions is on the rise mainly due to improved life expectancy. Successful management of these lesions is often challenging, and given that dentin can be remineralized, adverse consequences due to progression of these lesions can be prevented or minimized as such. Purpose This study aimed to assess the effect of casein phosphopeptide amorphous calcium phosphate (CPP-ACP) and Remin-Pro remineralizing agents on dentin microhardness of non-carious dentin lesions. Materials and Method This in vitro, experimental study evaluated 36 extracted sound human premolars. The teeth were decoronated at the cementoenamel junction. Enamel was removed, and dentin was exposed at the cervical third of the buccal surface. The primary microhardness of dentin was then measured. The teeth, standardized in terms of dentin microhardness, then underwent demineralization by acid etching and were subjected to microhardness test again. They were then randomized into three groups for treatment with CPP-ACP, Remin-Pro, and artificial saliva (control), and dentin microhardness was measured for the third time after treatment. Data were analyzed using ANOVA. Results Within group comparisons showed a significant difference in microhardness at the three time points in all three groups (p< 0.005). Between-group comparisons revealed that the microhardness of the three groups was not significantly different at baseline or after demineralization. However, the microhardness of the three groups was significantly different after the intervention (p= 0.000). Pairwise comparisons revealed significantly higher microhardness in the CPP-ACP group than the other two groups (p= 0.003). Remin-Pro and the control groups were not significantly different in this respect (p= 0.340). Conclusion CPP-ACP can be used for remineralization of non-caries dentin lesions; however, Remin-Pro does not appear to be effective for this purpose.
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Affiliation(s)
- Haleh Heshmat
- Dept. of Restorative Dentistry, Member of Dental Material Research Center, Islamic Azad University of Medical Sciences, Tehran, Iran
| | - Haleh Kazemi
- Dept. of Restorative Dentistry, School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
| | - Maryam Hoorizad Ganjkar
- Dept. of Restorative Dentistry, School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
| | - Farhad Chaboki
- Postgraduate Student, School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
| | - Mahoor Shokri
- School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
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Besnard C, Marie A, Sasidharan S, Harper RA, Shelton RM, Landini G, Korsunsky AM. Synchrotron X-ray Studies of the Structural and Functional Hierarchies in Mineralised Human Dental Enamel: A State-of-the-Art Review. Dent J (Basel) 2023; 11:98. [PMID: 37185477 PMCID: PMC10137518 DOI: 10.3390/dj11040098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/19/2023] [Accepted: 03/28/2023] [Indexed: 05/17/2023] Open
Abstract
Hard dental tissues possess a complex hierarchical structure that is particularly evident in enamel, the most mineralised substance in the human body. Its complex and interlinked organisation at the Ångstrom (crystal lattice), nano-, micro-, and macro-scales is the result of evolutionary optimisation for mechanical and functional performance: hardness and stiffness, fracture toughness, thermal, and chemical resistance. Understanding the physical-chemical-structural relationships at each scale requires the application of appropriately sensitive and resolving probes. Synchrotron X-ray techniques offer the possibility to progress significantly beyond the capabilities of conventional laboratory instruments, i.e., X-ray diffractometers, and electron and atomic force microscopes. The last few decades have witnessed the accumulation of results obtained from X-ray scattering (diffraction), spectroscopy (including polarisation analysis), and imaging (including ptychography and tomography). The current article presents a multi-disciplinary review of nearly 40 years of discoveries and advancements, primarily pertaining to the study of enamel and its demineralisation (caries), but also linked to the investigations of other mineralised tissues such as dentine, bone, etc. The modelling approaches informed by these observations are also overviewed. The strategic aim of the present review was to identify and evaluate prospective avenues for analysing dental tissues and developing treatments and prophylaxis for improved dental health.
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Affiliation(s)
- Cyril Besnard
- MBLEM, Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, Oxfordshire, UK
| | - Ali Marie
- MBLEM, Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, Oxfordshire, UK
| | - Sisini Sasidharan
- MBLEM, Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, Oxfordshire, UK
| | - Robert A. Harper
- School of Dentistry, University of Birmingham, 5 Mill Pool Way, Edgbaston, Birmingham B5 7EG, West Midlands, UK
| | - Richard M. Shelton
- School of Dentistry, University of Birmingham, 5 Mill Pool Way, Edgbaston, Birmingham B5 7EG, West Midlands, UK
| | - Gabriel Landini
- School of Dentistry, University of Birmingham, 5 Mill Pool Way, Edgbaston, Birmingham B5 7EG, West Midlands, UK
| | - Alexander M. Korsunsky
- MBLEM, Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, Oxfordshire, UK
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Nunes GP, Danelon M, Pessan JP, Capalbo LC, Junior NAN, Matos AA, Souza JAS, Buzalaf MAR, Delbem ACB. Fluoride and trimetaphosphate association as a novel approach for remineralization and antiproteolytic activity in dentin tissue. Arch Oral Biol 2022; 142:105508. [PMID: 35901595 DOI: 10.1016/j.archoralbio.2022.105508] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/28/2022] [Accepted: 07/10/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE The study evaluated the effect of solutions containing fluoride (F) and/or sodium trimetaphosphate (TMP) and F/TMP on the inhibition of MMP-2 and MMP-9, and on dentin remineralization in vitro. DESIGN Bovine root dentin blocks were prepared, and caries-like lesions were induced in two thirds of the surface. Blocks were then randomly divided into 13 groups/solutions (n = 10): Placebo; 0.3 %, 1 % and 3 % NaOH-hydrolyzed TMP; 0.3 %, 1 % and 3 % TMP; 250, 500 and 1100 ppm F; 250 ppm F + 0.3 % TMP; 500 ppm F + 1 % TMP and 1100 ppm F + 3 % TMP. One third of each specimen was treated with the respective solutions in pH-cycling. The mineral concentration (gHAp × cm-3 × µm) was determined by computed X-ray microtomography, and data submitted to ANOVA and Student-Newman-Keuls' test (p < 0.05). The ability of the solutions to inhibit MMP-2 and MMP-9 activity was assessed by zymography. RESULTS F/TMP association led to less mineral loss in the deeper region of the lesion and reduced the depth of lesions when compared to its counterpart without TMP (p < 0.001). 3 % TMP (hydrolyzed or not), 500 ppm F and 1100 ppm F completely inhibited MMP-2 activity, while for MMP-9 such effects were only achieved by treatment with 1100 ppm F + 3 % TMP. CONCLUSION Treatment with 1100 ppm F + 3 % TMP fully inhibits the gelatinolytic activity of MMPs-2 and - 9 and shows greater remineralizing capacity in artificial caries lesions in dentin. However, hydrolyzing TMP does not improve its anti-proteolytic activity and its remineralizing capacity.
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Affiliation(s)
- Gabriel Pereira Nunes
- São Paulo State University (UNESP), School of Dentistry, Araçatuba, Department of Preventive and Restorative Dentistry, Brazil
| | - Marcelle Danelon
- São Paulo State University (UNESP), School of Dentistry, Araçatuba, Department of Preventive and Restorative Dentistry, Brazil; School of Dentistry, University of Ribeirão Preto - UNAERP, Ribeirão Preto, Brazil
| | - Juliano Pelim Pessan
- São Paulo State University (UNESP), School of Dentistry, Araçatuba, Department of Preventive and Restorative Dentistry, Brazil
| | - Letícia Cabrera Capalbo
- São Paulo State University (UNESP), School of Dentistry, Araçatuba, Department of Preventive and Restorative Dentistry, Brazil
| | - Nilson Antônio Nunes Junior
- São Paulo State University (UNESP), School of Dentistry, Araçatuba, Department of Preventive and Restorative Dentistry, Brazil
| | - Adriana Arruda Matos
- São Paulo State University (USP), School of Dentistry, Bauru, Department of Biological Sciences, Brazil
| | - José Antonio Santos Souza
- São Paulo State University (UNESP), School of Dentistry, Araçatuba, Department of Preventive and Restorative Dentistry, Brazil
| | | | - Alberto Carlos Botazzo Delbem
- São Paulo State University (UNESP), School of Dentistry, Araçatuba, Department of Preventive and Restorative Dentistry, Brazil.
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Franco S, Cardoso-Martins I, Arantes-Oliveira S, Pessanha S, Marques PF. In vitro polarized Raman analysis for the evaluation of the efficacy of CPP-ACP remineralizing mousse in tooth hypomineralization. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Effect of fluoride, casein phosphopeptide-amorphous calcium phosphate and sodium trimetaphosphate combination treatment on the remineralization of caries lesions: An in vitro study. Arch Oral Biol 2020; 122:105001. [PMID: 33316658 DOI: 10.1016/j.archoralbio.2020.105001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 11/16/2020] [Accepted: 11/22/2020] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the effects of combination of treatments with fluoridated toothpastes supplemented with sodium trimetaphosphate (TMP) and casein phosphopeptide-amorphous calcium phosphate (MI Paste Plus®), on the remineralization of dental enamel. DESIGN Enamel blocks with artificial caries were randomly allocated into six groups (n = 12), according to the toothpastes: 1) without F-TMP-MI Paste Plus® (Placebo); 2) 1100 ppm F (1100 F), 3) MI Paste Plus®, 4) 1100 F + MI Paste Plus® (1100 F-MI Paste Plus®), 5) 1100 F + 3% TMP (1100 F-TMP) and 6) 1100 F-TMP + MI Paste Plus® (1100 F-TMP-MI Paste Plus®). Blocks were treated 2×/day with slurries of toothpastes (1 min). Furthermore, groups 4 and 6 received the application of MI Paste Plus® for 3 min. After pH cycling, the percentage of surface hardness recovery (%SHR); integrated loss of subsurface hardness (ΔKHN); profile analysis and lesion depth subsurface through polarized light microscopy (PLM), confocal laser scanning microscopy (LSCM), scanning electron microscopy (SEM), fluoride (F), calcium (Ca), phosphorus (P) concentrations in the enamel were determined. The data were analyzed by ANOVA (1-criterion) and Student-Newman-Keuls test (p < 0.001). RESULTS 1100 F-TMP-MI Paste Plus® group showed the best results of %SHR, ΔKHN and PLM (p < 0.001). F concentration was similar between the 1100 F, 1100 F-MI Paste Plus®, and 1100 F-TMP-MI Paste Plus® groups (p > 0.001). 1100 F-TMP-MI Paste Plus® group showed the highest concentration of Ca and P in the enamel (p < 0.001). CONCLUSION The association of 1100 F-TMP and MI Paste Plus® led to a significant increase in the remineralization of initial carious lesions.
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Gonçalves FMC, Delbem ACB, Gomes LF, Emerenciano NG, Dos Passos Silva M, Cannon ML, Danelon M. Combined effect of casein phosphopeptide-amorphous calcium phosphate and sodium trimetaphosphate on the prevention of enamel demineralization and dental caries: an in vitro study. Clin Oral Investig 2020; 25:2811-2820. [PMID: 32995976 DOI: 10.1007/s00784-020-03597-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 09/15/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To evaluate the effect of treatment with fluoridated toothpaste supplemented with a combination of sodium trimetaphosphate (TMP) and casein phosphopeptide-amorphous calcium phosphate (MI Paste Plus®) on the demineralization of dental enamel. METHODS Bovine enamel blocks selected by initial surface hardness (SHi) were randomly allocated into six groups (n = 12), according to the test toothpastes: (1) without F-TMP-MI Paste Plus® (Placebo); (2) 1100 ppm F (1100F); (3) MI Paste Plus®; (4) 1100F + MI Paste Plus® (1100F-MI Paste Plus), (5) 1100F + 3 % TMP (1100F-TMP); and (6) 1100F-TMP + MI Paste Plus® (1100F-TMP-MI Paste Plus). Blocks were treated two times per day with slurries of toothpaste (1 min), and groups 4 and 6 received an application of MI Paste Plus (3 min). Next, the samples were subjected to five pH cycles (demineralizing/remineralizing solutions) at 37 °C, to produce subsurface enamel lesions.Thereafter, the blocks were maintained for 2 days in fresh remineralizing solution. After pH cycling, the following were obtained: percentage of surface hardness loss (%SH); integrated loss of subsurface hardness (ΔKHN); profile analysis and lesion depth subsurface through polarized light microscopy (PLM); scanning electron microscopy (SEM); and fluoride (F), calcium (Ca), and phosphorus (P) in the enamel. The data were subjected to ANOVA (1-criterion), followed by the Student-Newman-Keuls test (p < 0.001). RESULTS The 1100F-TMP-MI Paste Plus group showed better results for SHR, ΔKHN, and PLM (p < 0.001). The F concentration was similar among all groups (p > 0.001). The 1100F-TMP-MI Paste Plus group showed the highest concentration of Ca and P in the enamel (p < 0.001). CONCLUSION The application of 1100F-TMP-MI Paste Plus promoted a higher inhibitory effect against enamel demineralization. CLINICAL SIGNIFICANCE The combination of treatments with F, TMP, and MI Paste Plus® can be an effective alternative to improve the oral health of individuals, especially those with high activity of dental caries and at high risk for its development.
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Affiliation(s)
- Francyenne Maira Castro Gonçalves
- Department of Preventive and Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araçatuba, Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil
| | - Alberto Carlos Botazzo Delbem
- Department of Preventive and Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araçatuba, Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil
| | - Leonardo Fernandes Gomes
- Department of Materials Engineering, Federal University of São Carlos - UFSCar, São Carlos, SP, Cep 13565-905, Brazil
| | - Nayara Gonçalves Emerenciano
- Department of Preventive and Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araçatuba, Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil
| | - Matheus Dos Passos Silva
- Department of Preventive and Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araçatuba, Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil
| | - Mark L Cannon
- Feinberg School of Medicine, Ann and Robert Lurie Children's Hospital, Northwestern University, Chicago, IL, USA
| | - Marcelle Danelon
- Department of Preventive and Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araçatuba, Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil.
- School of Dentistry, University of Ribeirão Preto-UNAERP, Ribeirão Preto, SP, Cep 14096-900, Brazil.
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Effect of daily use of fluoridated dentifrice and bleaching gels containing calcium, fluoride, or trimetaphosphate on enamel hardness: an in vitro study. Clin Oral Investig 2020; 25:883-889. [PMID: 32488489 DOI: 10.1007/s00784-020-03375-5] [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: 10/24/2019] [Accepted: 05/25/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE This study evaluated the effects of calcium gluconate (CaGlu), sodium fluoride (NaF), sodium trimetaphosphate (TMP), and NaF/TMP added to a 35% hydrogen peroxide (HP) bleaching gel for the reduction in enamel demineralization in vitro, with and without the use of a fluoridated dentifrice. DESIGN Enamel blocks (n = 100) were obtained from bovine incisors (n = 200) after flattening and subjected to initial surface hardness (SH) analysis. The blocks were divided according to the bleaching gel (35% HP; 35% HP + 0.05% NaF; 35% HP + 0.25% TMP; 35% HP + 0.05% NaF + 0.25% TMP; 35% HP + 2% CaGlu) and were treated with ether non-fluoridated or fluoridated (1100 ppm) dentifrice. The bleaching gels were applied thrice (40 min/session) at the intervals of 7 days between each application. After 21 days, the final SH for the calculation of the percentage of SH loss (%SH) and cross-sectional hardness for the evaluation of the integrated hardness area (IH) were determined. RESULTS Bleaching containing HP + NaF + TMP presented lowest %SH (p < 0.001), regardless of the dentifrice used. HP + NaF + TMP bleaching gel led to lower subsurface enamel mineral loss (IH) compared to the other groups (p < 0.001), and these did not differ from each other (p > 0.05). Daily use of fluoride dentifrice led to higher IH values (p < 0.001), regardless of the bleaching gels. CONCLUSION The addition of NaF/TMP to a 35% HP bleaching gel remarkably reduced the mineral loss compared to the cases of the other bleaching gels, regardless of dentifrice. CLINICAL RELEVANCE The association of TMP/NaF can be used as a strategy for reducing mineral loss during the bleaching procedure, even without the daily use of fluoride dentifrice.
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Gouvêa DB, Santos NMD, Pessan JP, Jardim JJ, Rodrigues JA. Enamel Subsurface Caries-Like Lesions Induced in Human Teeth By Different Solutions: A TMR Analysis. Braz Dent J 2020; 31:157-163. [PMID: 32556015 DOI: 10.1590/0103-6440202003123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 11/20/2019] [Indexed: 11/22/2022] Open
Abstract
This study assessed the effectiveness of models for developing subsurface caries lesions in vitro and verified mineral changes by transverse microradiography (TMR). Enamel blocks from permanent (n=5) and deciduous teeth (n=5) were submitted to lesion induction by immersion in demineralizing solutions during 96 h, followed by pH cycles of demineralization (de) and remineralization (re) for 10 days. Two de-/re solutions were tested. Demineralizing solution "A" was composed by 2.2 mM CaCl2, 2.2 mM KH2PO4, 0.05 M acetic acid, with pH 4.4 adjusted by 1 M KOH. Demineralizing solution "B" was composed by 2.2 mM CaCl2, 2.2 mM NaH2PO4, 0.05 M acetic acid and 0.25 ppmF, with pH 4.5 adjusted by 1M KOH. Solution "A" produced cavitated lesions in permanent teeth, whereas solution "B" led to subsurface lesions in deciduous teeth. Solution "B" was then tested in enamel blocks from permanent teeth (n=5) and subsurface lesions were obtained, so that solution "B" was employed for both substrates, and the blocks were treated with slurries of a fluoride dentifrice (1450 ppm F, as NaF, n=5) or a fluoride-free dentifrice (n=5). Solution "B" produced subsurface lesions in permanent and primary teeth of an average (±SD) depth of 88.4µm (±14.3) and 89.3µm (±15.8), respectively. TMR analysis demonstrated that lesions treated with fluoride-free dentifrice had significantly greater mineral loss. This study concluded that solution "B" developed subsurface lesions after pH cycling, and that mineral changes were successfully assessed by TMR.
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Affiliation(s)
- Daiana Back Gouvêa
- Pediatric Dentistry Division, UFRGS - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | - Juliano Pelim Pessan
- Department of Preventive and Restorative Dentistry, UNESP - Univ Estadual Paulista, Aracatuba, SP, Brazil
| | - Juliana Jobim Jardim
- Cariology Division, UFRGS - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Jonas Almeida Rodrigues
- Pediatric Dentistry Division, UFRGS - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Huang X, Moon SH, Lee J, Paik H, Lee EJ, Min B, Ahn DU. Effective Preparation Method of Phosphopeptides from Phosvitin and the Analysis of Peptide Profiles Using Tandem Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:14086-14101. [PMID: 31766846 DOI: 10.1021/acs.jafc.9b05973] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The effect of high-temperature and mild-pressure (HTMP) pretreatment on the enzymatic hydrolysis of phosvitin and the structural characteristics of the phosphopeptides produced were analyzed using tandem mass spectrometry. The HTMP pretreatment hydrolyzed phosvitin at random sites and helped the subsequent enzyme hydrolysis of the peptides produced. With the HTMP pretreatment alone, 154 peptides were produced, while the use of trypsin, Protex 6L, and Multifect 14L in combination with the pretreatment produced 252, 280, and 164 peptides, respectively. The use of two enzyme combinations (trypsin + Protex 6L and trypsin + Multifect 14L) helped the hydrolysis further. The number of phosphopeptides produced increased when the modifications within the same amino acid sequences were considered. This study indicated that HTMP pretreatment was a breakthrough method to improve the enzymatic hydrolysis of phosvitin that enabled an easy production of phosvitin phosphopeptides for their subsequent functional characterizations.
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Affiliation(s)
- Xi Huang
- College of Food Science & Technology , Huazhong Agricultural University , Egg Processing Technology Local Joint National Engineering Research Center, National R&D Center for Egg Processing, Wuhan , Hubei 430070 , People's Republic of China
| | - Sun Hee Moon
- Animal Science Department , Iowa State University , Ames , Iowa 50011 , United States
| | - Jaehoon Lee
- Division of Animal Life Science , Konkuk University , Seoul 05029 , Korea
| | - Hyundong Paik
- Division of Animal Life Science , Konkuk University , Seoul 05029 , Korea
| | - Eun Joo Lee
- Department of Food and Nutrition , University of Wisconsin-Stout , Menomonie , Wisconsin 54751 , United States
| | - Byungrok Min
- Food Science and Technology Ph.D. Program, Department of Agriculture, Food, and Resource Sciences , University of Maryland Eastern Shore , Princess Anne , Maryland 21853 , United States
| | - Dong U Ahn
- Animal Science Department , Iowa State University , Ames , Iowa 50011 , United States
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Thierens LAM, Moerman S, Elst CV, Vercruysse C, Maes P, Temmerman L, Roo NMCD, Verbeeck RMH, Pauw GAMD. The in vitro remineralizing effect of CPP-ACP and CPP-ACPF after 6 and 12 weeks on initial caries lesion. J Appl Oral Sci 2019; 27:e20180589. [PMID: 31116280 PMCID: PMC6534368 DOI: 10.1590/1678-7757-2018-0589] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/24/2019] [Indexed: 11/29/2022] Open
Abstract
Objective: The aim of this in vitro study was to determine the effects of remineralization promoting agents containing casein phosphopeptide-stabilized amorphous calcium phosphate (CPP-ACP), or CPP-ACP in combination with fluoride (CPP-ACPF) on artificial white spot lesions (WSLs) after 6 and 12 weeks. Methodology: White spot lesions were created on 123 sectioned premolars (246 specimens) with a demineralization solution during a 96 hours pH-cycling regime. Two experimental groups were created: a CPP-ACP group (Tooth Mousse™), and a CPP-ACPF group (Mi Paste Plus™). Additionally, two control groups were created, one using only a conventional toothpaste (1450 ppm fluoride) and another one without any working agents. All teeth were also daily brushed with the conventional toothpaste except the second control group. Tooth Mousse™ and Mi Paste Plus™ were applied for 180 seconds every day. The volume of demineralization was measured with transverse microradiography. Six lesion characteristics regarding the lesion depth and mineral content of WSLs were also determined. Results: The application of CPP-ACP and CPP-ACPF had a significant regenerative effect on the WSLs. Compared to Control group 1 and 2 the volume of demineralization after 6 weeks decreased significantly for CPP-ACP (respectively p<0.001 and p<0.001) and CPP-ACPF (respectively p=0.001 and p=0.003). The same trend was observed after 12 weeks. For the CPP-ACPF group, WSL dimensions decreased significantly between 6 and 12 weeks follow-up (p=0.012). The lesion depth reduced significantly after application of CPP-ACP and CPP-ACPF but increased significantly in the Control groups. Mineral content increased for CPP-ACP and CPP-ACPF after an application period of 12 weeks, but this was only significant for CPP-ACP. Conclusions: Long-term use of CPP-ACP and CPP-ACPF in combination with a conventional tooth paste shows beneficial effects in the recovery of in vitro subsurface caries lesions.
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Affiliation(s)
- Laurent A M Thierens
- Ghent University, Department of Orthodontics, Oral Health Sciences, Ghent, Belgium
| | - Sophie Moerman
- Ghent University, Department of Orthodontics, Oral Health Sciences, Ghent, Belgium
| | - Charlotte van Elst
- Ghent University, Department of Orthodontics, Oral Health Sciences, Ghent, Belgium
| | - Chris Vercruysse
- Ghent University, Department of Basic Medical Sciences, Biomaterials Group, Ghent, Belgium
| | - Petra Maes
- Vrije Universiteit Brussel (VUB), Faculty of Medicine and Pharmacy, Oral Health Research Group (ORHE), Brussels, Belgium
| | - Liesbeth Temmerman
- Ghent University, Department of Orthodontics, Oral Health Sciences, Ghent, Belgium
| | - Noëmi M C de Roo
- Ghent University, Department of Orthodontics, Oral Health Sciences, Ghent, Belgium
| | - Ronald M H Verbeeck
- Ghent University, Department of Basic Medical Sciences, Biomaterials Group, Ghent, Belgium
| | - Guy A M de Pauw
- Ghent University, Department of Orthodontics, Oral Health Sciences, Ghent, Belgium
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