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Kang S, Shon B, Park EY, Jeong S, Kim EK. Diagnostic accuracy of dental caries detection using ensemble techniques in deep learning with intraoral camera images. PLoS One 2024; 19:e0310004. [PMID: 39241044 PMCID: PMC11379315 DOI: 10.1371/journal.pone.0310004] [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: 11/02/2023] [Accepted: 08/22/2024] [Indexed: 09/08/2024] Open
Abstract
Camera image-based deep learning (DL) techniques have achieved promising results in dental caries screening. To apply the intraoral camera image-based DL technique for dental caries detection and assess its diagnostic performance, we employed the ensemble technique in the image classification task. 2,682 intraoral camera images were used as the dataset for image classification according to dental caries presence and caries-lesion localization using DL models such as ResNet-50, Inception-v3, Inception-ResNet-v2, and Faster R-convolutional neural network according to diagnostic study design. 534 participants whose mean age [SD] was 47.67 [±13.94] years were enrolled. The dataset was divided into training (56.0%), validation (14.0%), and test subset (30.0%) annotated by one experienced dentist as a reference standard about dental caries detection and lesion location. The confusion matrix, area under the receiver operating characteristic curve (AUROC), and average precision (AP) were evaluated for performance analysis. In the end-to-end dental caries image classification, the ensemble DL models had consistently improved performance, in which as the best results, the ensemble model of Inception-ResNet-v2 achieved 0.94 of AUROC and 0.97 of AP. On the other hand, the explainable model achieved 0.91 of AUROC and 0.96 of AP after the ensemble application. For dental caries classification using intraoral camera images, the application of ensemble techniques exhibited consistently improved performance regardless of the DL models. Furthermore, the trial to create an explainable DL model based on carious lesion detection yielded favorable results.
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Affiliation(s)
- Sohee Kang
- Department of Dentistry, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Byungeun Shon
- Research Center for Artificial Intelligence in Medicine, Kyungpook National University Hospital, Daegu, South Korea
- Department of Medical Informatics, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Eun Young Park
- Department of Dentistry, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Sungmoon Jeong
- Research Center for Artificial Intelligence in Medicine, Kyungpook National University Hospital, Daegu, South Korea
- Department of Medical Informatics, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Eun-Kyong Kim
- Department of Dental Hygiene, College of Science and Technology, Kyungpook National University, Sangju, South Korea
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2
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Kielbassa AM, Summer S, Frank W, Lynch E, Batzer JS. Equivalence study of the resin-dentine interface of internal tunnel restorations when using an enamel infiltrant resin with ethanol-wet dentine bonding. Sci Rep 2024; 14:12444. [PMID: 38816512 PMCID: PMC11139992 DOI: 10.1038/s41598-024-63289-0] [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: 02/18/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024] Open
Abstract
This preregistered ex vivo investigation examined the dentinal hybrid layer formation of a resinous infiltrant (Icon), with reference to both thickness (HLT) and homogeneity when combined with modified tunnel preparation (occlusal cavity only) and internal/external caries infiltration. The adhesives Syntac and Scotchbond MP were used as controls (Groups 1 and 3) or in combination with Icon (Groups 2 and 4). A split-tooth design using healthy third molars from 20 donors resulted in 20 prepared dentine cavities per experimental group. The cavity surfaces (n = 80) were etched (37% H3PO4), rinsed, and air-dried. Rewetting with ethanol was followed by application of the respective primers. After labeling with fluorescent dyes, either Syntac Adhesive/Heliobond or Scotchbond MP Adhesive was used alone or supplemented with Icon. HLT, as evaluated by scanning electron microscopy, did not significantly differ (P > 0.05), and confocal laser scanning microscopy revealed homogeneously mixed/polymerized resin-dentine interdiffusion zones in all groups. Icon can be successfully integrated into an ethanol-wet dentine bonding strategy, and will result in compact and homogeneous hybrid layers of comparable thickness considered equivalent to the non-Icon controls, thus allowing for preservation of the tooth's marginal ridge and interdental space in the case of internal/external infiltration of proximal caries.
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Affiliation(s)
- Andrej M Kielbassa
- Centre for Operative Dentistry, Periodontology, and Endodontology, Department of Dentistry, Faculty of Medicine and Dentistry, Danube Private University (DPU), Steiner Landstraße 124, 3500, Krems an der Donau, Austria.
| | - Sabrina Summer
- Department for Biomedical Research, Centre of Experimental Medicine, University for Continuing Education Krems, Krems an der Donau, Austria
| | - Wilhelm Frank
- Centre for Health Sciences, Department of Medicine, Faculty of Medicine and Dentistry, Danube Private University (DPU), Krems an der Donau, Austria
| | - Edward Lynch
- Leicester School of Pharmacy, De Montfort University, Leicester, UK
| | - Julia-Susanne Batzer
- Centre for Operative Dentistry, Periodontology, and Endodontology, Department of Dentistry, Faculty of Medicine and Dentistry, Danube Private University (DPU), Steiner Landstraße 124, 3500, Krems an der Donau, Austria
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3
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Topolska JM, Jagielska A, Motyl S, Kozub-Budzyń GA, Kępa L, Wagner B, Wątor K. Metal leakage from orthodontic appliances chemically alters enamel surface during experimental in vitro simulated treatment. Sci Rep 2024; 14:5412. [PMID: 38443566 PMCID: PMC10914722 DOI: 10.1038/s41598-024-56111-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 03/01/2024] [Indexed: 03/07/2024] Open
Abstract
Human enamel is composed mainly of apatite. This mineral of sorption properties is susceptible to chemical changes, which in turn affect its resistance to dissolution. This study aimed to investigate whether metal leakage from orthodontic appliances chemically alters the enamel surface during an in vitro simulated orthodontic treatment. Totally 107 human enamel samples were subjected to the simulation involving metal appliances and cyclic pH fluctuations over a period of 12 months in four complimentary experiments. The average concentrations and distribution of Fe, Cr, Ni, Ti and Cu within the enamel before and after the experiments were examined using ICP‒MS and LA‒ICP‒MS techniques. The samples exposed to the interaction with metal appliances exhibited a significant increase in average Fe, Cr and Ni (Kruskal-Wallis, p < 0.002) content in comparison to the control group. The outer layer, narrow fissures and points of contact with the metal components showed increased concentrations of Fe, Ti, Ni and Cr after simulated treatment, conversely to the enamel sealed with an adhesive system. It has been concluded that metal leakage from orthodontic appliances chemically alters enamel surface and microlesions during experimental in vitro simulated treatment.
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Affiliation(s)
- Justyna M Topolska
- Department of Mineralogy, Petrography and Geochemistry, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, 30-059, Krakow, Poland.
| | - Agata Jagielska
- Laboratory of Theoretical Aspects of Analytical Chemistry, Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, 02-089, Warsaw, Poland
| | - Sylwia Motyl
- Department of Oral and Maxillofacial Surgery, Rydygier Hospital, 31-826, Krakow, Poland
| | - Gabriela A Kozub-Budzyń
- Department of Geology of Mineral Deposits and Mining Geology, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, 30-059, Krakow, Poland
| | - Luiza Kępa
- Laboratory of Theoretical Aspects of Analytical Chemistry, Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, 02-089, Warsaw, Poland
| | - Barbara Wagner
- Laboratory of Theoretical Aspects of Analytical Chemistry, Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, 02-089, Warsaw, Poland
| | - Katarzyna Wątor
- Department of Hydrogeology and Engineering Geology, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, 30-059, Krakow, Poland
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Ouldyerou A, Mehboob H, Mehboob A, Merdji A, Aminallah L, Mukdadi OM, Barsoum I, Junaedi H. Biomechanical performance of resin composite on dental tissue restoration: A finite element analysis. PLoS One 2023; 18:e0295582. [PMID: 38128035 PMCID: PMC10734934 DOI: 10.1371/journal.pone.0295582] [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: 08/17/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
This study investigates the biomechanical performance of various dental materials when filled in different cavity designs and their effects on surrounding dental tissues. Finite element models of three infected teeth with different cavity designs, Class I (occlusal), Class II mesial-occlusal (MO), and Class II mesio-occluso-distal (MOD) were constructed. These cavities were filled with amalgam, composites (Young's moduli of 10, 14, 18, 22, and 26 GPa), and glass carbomer cement (GCC). An occlusal load of 600 N was distributed on the top surface of the teeth to carry out simulations. The findings revealed that von Mises stress was higher in GCC material, with cavity Class I (46.01 MPa in the enamel, 23.61 MPa in the dentin), and for cavity Class II MO von Mises stress was 43.64 MPa, 39.18 MPa in enamel and dentin respectively, while in case of cavity Class II MOD von Mises stress was 44.67 MPa in enamel, 27.5 in the dentin. The results showed that higher stresses were generated in the non-restored tooth compared to the restored one, and increasing Young's modulus of restorative composite material decreases stresses in enamel and dentin. The use of composite material showed excellent performance which can be a good viable option for restorative material compared to other restorative materials.
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Affiliation(s)
- Abdelhak Ouldyerou
- Department of Mechanical Engineering, Faculty of Science and Technology, University of Mascara, Mascara, Algeria
| | - Hassan Mehboob
- Department of Engineering Management, College of Engineering, Prince Sultan University, Riyadh, Saudi Arabia
| | - Ali Mehboob
- Advanced Digital & Additive Manufacturing Center, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Ali Merdji
- Department of Mechanical Engineering, Faculty of Science and Technology, University of Mascara, Mascara, Algeria
| | - Laid Aminallah
- Department of Mechanical Engineering, Faculty of Science and Technology, University of Mascara, Mascara, Algeria
| | - Osama M. Mukdadi
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, West Virginia, United States of America
| | - Imad Barsoum
- Advanced Digital & Additive Manufacturing Center, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Engineering Mechanics, Royal Institute of Technology – KTH, Teknikringen, Stockholm, Sweden
| | - Harri Junaedi
- Department of Engineering Management, College of Engineering, Prince Sultan University, Riyadh, Saudi Arabia
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Hossain MI, Shams AB, Das Gupta S, Blanchard GJ, Mobasheri A, Hoque Apu E. The Potential Role of Ionic Liquid as a Multifunctional Dental Biomaterial. Biomedicines 2023; 11:3093. [PMID: 38002093 PMCID: PMC10669305 DOI: 10.3390/biomedicines11113093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/27/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
In craniofacial research and routine dental clinical procedures, multifunctional materials with antimicrobial properties are in constant demand. Ionic liquids (ILs) are one such multifunctional intelligent material. Over the last three decades, ILs have been explored for different biomedical applications due to their unique physical and chemical properties, high task specificity, and sustainability. Their stable physical and chemical characteristics and extremely low vapor pressure make them suitable for various applications. Their unique properties, such as density, viscosity, and hydrophilicity/hydrophobicity, may provide higher performance as a potential dental material. ILs have functionalities for optimizing dental implants, infiltrate materials, oral hygiene maintenance products, and restorative materials. They also serve as sensors for dental chairside usage to detect oral cancer, periodontal lesions, breath-based sobriety, and dental hard tissue defects. With further optimization, ILs might also make vital contributions to craniofacial regeneration, oral hygiene maintenance, oral disease prevention, and antimicrobial materials. This review explores the different advantages and properties of ILs as possible dental material.
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Affiliation(s)
- Md Iqbal Hossain
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA; (M.I.H.); (G.J.B.)
| | - Abdullah Bin Shams
- The Edward S. Rogers Sr. Department of Electrical Computer Engineering, University of Toronto, Toronto, ON M5S 3G4, Canada;
| | - Shuvashis Das Gupta
- Research Unit of Health Science and Technology, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland; (S.D.G.); (A.M.)
| | - Gary J. Blanchard
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA; (M.I.H.); (G.J.B.)
| | - Ali Mobasheri
- Research Unit of Health Science and Technology, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland; (S.D.G.); (A.M.)
- Division of Public Health, Epidemiology and Health Economics, WHO Collaborating Center for Public Health Aspects of Musculo-Skeletal Health and Ageing, University of Liège, 4000 Liège, Belgium
- State Research Institute Centre for Innovative Medicine, 08410 Vilnius, Lithuania
- Department of Joint Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Ehsanul Hoque Apu
- Research Unit of Health Science and Technology, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland; (S.D.G.); (A.M.)
- Department of Biomedical Sciences, College of Dental Medicine, Lincoln Memorial University, Knoxville, TN 37923, USA
- Institute for Quantitative Health Science and Engineering, Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
- Division of Hematology and Oncology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Centre for International Public Health and Environmental Research, Bangladesh (CIPHER,B), Dhaka 1207, Bangladesh
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Zhou W, Chen H, Weir MD, Oates TW, Zhou X, Wang S, Cheng L, Xu HH. Novel bioactive dental restorations to inhibit secondary caries in enamel and dentin under oral biofilms. J Dent 2023; 133:104497. [PMID: 37011782 DOI: 10.1016/j.jdent.2023.104497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/16/2023] [Accepted: 03/20/2023] [Indexed: 04/03/2023] Open
Abstract
OBJECTIVE To provide the first review on cutting-edge research on the development of new bioactive restorations to inhibit secondary caries in enamel and dentin under biofilms. State-of-the-art bioactive and therapeutic materials design, structure-property relationships, performance and efficacies in oral biofilm models. DATA, SOURCES AND STUDY SELECTION Researches on development and assessment new secondary caries inhibition restorations via in vitro and in vivo biofilm-based secondary caries models were included. The search of articles was carried out in Web of Science, PubMed, Medline and Scopus. CONCLUSIONS Based on the found articles, novel bioactive materials are divided into different categories according to their remineralization and antibacterial biofunctions. In vitro and in vivo biofilm-based secondary caries models are effective way of evaluating the materials efficacies. However, new intelligent and pH-responsive materials were still urgent need. And the materials evaluation should be performed via more clinical relevant biofilm-based secondary caries models. CLINICAL SIGNIFICANCE Secondary caries is a primary reason for dental restoration failures. Biofilms produce acids, causing demineralization and secondary caries. To inhibit dental caries and improve the health and quality of life for millions of people, it is necessary to summarize the present state of technologies and new advances in dental biomaterials for preventing secondary caries and protecting tooth structures against oral biofilm attacks. In addition, suggestions for future studies are provided.
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Mazzitelli C, Josic U, Maravic T, Mancuso E, Goracci C, Cadenaro M, Mazzoni A, Breschi L. An Insight into Enamel Resin Infiltrants with Experimental Compositions. Polymers (Basel) 2022; 14:polym14245553. [PMID: 36559920 PMCID: PMC9782164 DOI: 10.3390/polym14245553] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/09/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
Resin infiltration is a conservative treatment of initial enamel carious lesions. Only one infiltrant material is available on the market (Icon, DMG), and research is now investigating new chemical compositions so as to further exploit the benefits of the resin infiltration technique. A literature search of the articles testing the effects of different formulations on mechanical properties, resin penetration ability, remineralizing, and antibacterial activities was conducted. Of 238 articles, 29 resulted in being eligible for the literature review. The formulations investigated were all different and consisted in the inclusion of hydrophobic monomers (i.e., BisEMA, UDMA), solvents (ethanol, HEMA), alternative etchants (PAM) or molecules with antibacterial or bioactivity features (i.e., AgNP, YbF3, MTZ, chitosan, DMAMM, HAp, MC-IL, NACP, PUA, CHX) and microfilled resins. Information on the long-term performances of the tested experimental materials were scarce. The combination of TEGDMA with hydrophobic monomers and the inclusion of a solvent alternative to ethanol reinforced mechanical properties of the materials. Hybrid-glass materials demonstrated an enhanced remineralization capacity. Techniques such as tunnelization increased the penetration depth and preserved the recourse to less-conservative treatments. Combining the min-invasive infiltrant approach with remineralizing and bacteriostatic properties would be beneficial for therapeutic and economical aspects, according to the principles of minimally invasive dentistry.
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Affiliation(s)
- Claudia Mazzitelli
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
| | - Uros Josic
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
| | - Tatjana Maravic
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
- Correspondence:
| | - Edoardo Mancuso
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
| | - Cecilia Goracci
- Dipartimento di Biotecnologie Mediche, University of Siena, Policlinico Le Scotte, Viale Bracci 1, 53100 Siena, Italy
| | - Milena Cadenaro
- Department of Medical Sciences, University of Trieste, Strada di Fiume 447, 34125 Trieste, Italy
- Institute for Maternal and Child Health-IRCCS “Burlo Garofolo”, Via dell’Istria 65/1, 34137 Trieste, Italy
| | - Annalisa Mazzoni
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
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Resin Infiltration of Non-Cavitated Enamel Lesions in Paediatric Dentistry: A Narrative Review. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9121893. [PMID: 36553336 PMCID: PMC9776437 DOI: 10.3390/children9121893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/29/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
The resin infiltration (RI) technique was introduced as one of the minimal intervention dentistry strategies in addressing dental caries among the paediatric population. This technique used the low-viscosity resin monomer to infiltrate the non-cavitated carious lesion and other developmental enamel porosities, thus allowing the conservation of the tooth structure. This narrative review aims to explore the value of RI in Paediatric Dentistry. Through our search of the literature, the development of the material, their clinical applications and shortcomings, as well as the innovation that has been carried out to improve the current RI, were discussed. There are number of high-level evidence supporting the use of RI in arresting non-cavitated proximal caries lesions in primary and permanent teeth, but its efficacy in managing anterior white spot lesions is still unclear. Limited penetration depth, not radiopaque and questionable long-term colour and material stability were among the limitation of the material. Various laboratory-based studies have been conducted to improve the current properties of RI. Nevertheless, RI has emerged as one of the important micro-invasive techniques in addressing non-cavitated and anterior white-spot enamel lesions in children and adolescents with great success.
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Huang X, Liang J, Zhou W, Ma T, Weir MD, Hack GD, Fay GG, Oates TW, Cheng L, Xu HHK. Novel dental resin infiltrant containing smart monomer dodecylmethylaminoethyl methacrylate. Front Cell Infect Microbiol 2022; 12:1063143. [PMID: 36519132 PMCID: PMC9743298 DOI: 10.3389/fcimb.2022.1063143] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 10/24/2022] [Indexed: 11/16/2022] Open
Abstract
Objectives White spot lesions (WSLs) are prevalent and often lead to aesthetic problems and progressive caries. The objectives of this study were to: (1) develop a novel resin infiltrant containing smart monomer dodecylmethylaminoethyl methacrylate (DMAEM) to inhibit WSLs, and (2) investigate the effects of DMAEM incorporation on cytotoxicity, mechanical properties, biofilm-inhibition and protection of enamel hardness for the first time. Methods DMAEM was synthesized using 1-bromododecane, 2-methylamino ethanol and methylmethacrylate. DMAEM with mass fractions of 0%, 1.25%, 2.5% and 5% were incorporated into a resin infiltant containing BisGMA and TEGDMA. Cytotoxicity, mechanical properties and antibacterial effects were tested. After resin infiltration, bovine enamel was demineralized with saliva biofilm acids, and enamel hardness was measured. Result DMAEM infiltration did not increase the cytotoxicity or compromise the physical properties when DMAEM mass fraction was below 5% (p > 0.05). Biofilm metabolic activity was reduced by 90%, and biofilm lactic acid production was reduced by 92%, via DMAEM (p < 0.05). Mutans streptococci biofilm CFU was reduced by 3 logs (p < 0.05). When demineralized in acid and then under biofilms, the infiltrant + 5% DMAEM group produced an enamel hardness (mean ± sd; n = 6) of 2.90 ± 0.06 GPa, much higher than 0.85 ± 0.12 GPa of the infiltrant + 0% DMAEM group (p < 0.05). Significance A novel resin infiltrant with excellent mechanical properties, biocompability, strong antibacterial activity and anti-demineralization effect was developed using DMAEM for the first time. The DMAEM resin infiltrant is promising for inhibiting WSLs, arresting early caries, and protecting enamel hardness.
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Affiliation(s)
- Xiaoyu Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China,Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, United States,Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Jingou Liang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China,Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, United States,Department of Pediatric Dentistry, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Wen Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China,Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, United States,Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Tao Ma
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, MD, United States
| | - Michael D. Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, United States
| | - Gary D. Hack
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, United States
| | - Guadalupe Garcia Fay
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, United States
| | - Thomas W. Oates
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, United States
| | - Lei Cheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China,Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China,*Correspondence: Hockin H. K. Xu, ; Lei Cheng,
| | - Hockin H. K. Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD, United States,Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD, United States,Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, United States,*Correspondence: Hockin H. K. Xu, ; Lei Cheng,
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Yang S, Sui B, Cui Y, Liu X, Sun J, Wang J. A novel dental infiltration resin based on isosorbide-derived dimethacrylate with high biocompatibility, hydrolysis resistance, and antibacterial effect. Front Bioeng Biotechnol 2022; 10:1049894. [PMID: 36440443 PMCID: PMC9685411 DOI: 10.3389/fbioe.2022.1049894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 10/18/2022] [Indexed: 09/10/2023] Open
Abstract
Objectives: The available infiltration resin has raised biosafety and treatment stability concerns because of the cytotoxicity of the main component, TEGDMA, and its susceptibility to hydrolysis in the oral environment. This study aimed to develop a TEGDMA-free infiltration resin to overcome these drawbacks. Methods: Using the synthetic bioderived monomer bis(methacrylate) isosorbide (IBM) and the zwitterionic compound 2-methacryloyloxyethyl phosphorylcholine (MPC), a novel infiltrant IBMA was developed and preferentially selected. We investigated the performance of the IBMA resin regarding cytotoxicity, antibiofilm adhesion, and hydrolysis resistance and further verified its ability to restore the demineralized enamel and stability of the infiltrated area under artificial aging conditions. Results: Compared with the commercial TEGDMA-based infiltration resin ICON, IBMA not only demonstrated similar enamel morphologic and esthetic restorative effects in chalky lesions but also exhibited favorable cell viability, durable Streptococcus mutans UA159 biofilm-repellent performance, and higher enamel microhardness (204.0 ± 5.12 HV) of the infiltrated enamel. Specifically, because of the high crosslink density [(47.77 ± 5.76) ×103 mol/mm3] and low water sorption [12.79 ± 2.56 µg/mm3] of the polymer network, the IBMA resin was more resistant to hydrolysis than ICON, which prevents the disruption of the infiltrant's micropore-blocking effect after aging. Enamel lesions treated with IBMA demonstrated good color stability after the tea-staining challenge, which was significantly better than that in the ICON group. Conclusion: Based on these findings, the IBMA resin exhibits favorable cell viability, hydrolysis resistance, and biofilm-repellent properties, which alleviates the defects of traditional TEGDMA systems. Therefore, it is a better alternative for microinvasive treatment involving early caries and enamel whitish discoloration.
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Affiliation(s)
- Su Yang
- Department of Pediatric Dentistry, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Innovative Research Team of High-Level Local Universities in Shanghai, China
| | - Baiyan Sui
- Department of Dental Materials, Shanghai Biomaterials Research and Testing Center, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Yinan Cui
- Department of Dental Materials, Shanghai Biomaterials Research and Testing Center, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Xin Liu
- Department of Dental Materials, Shanghai Biomaterials Research and Testing Center, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Jiao Sun
- Department of Dental Materials, Shanghai Biomaterials Research and Testing Center, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Jun Wang
- Department of Pediatric Dentistry, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Innovative Research Team of High-Level Local Universities in Shanghai, China
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11
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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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12
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Li M, Yang Z, Huang Y, Li Y, Zhou Z. In vitro effect of resin infiltrant on resistance of sound enamel surfaces in permanent teeth to demineralization. PeerJ 2022; 9:e12008. [PMID: 35047244 PMCID: PMC8759355 DOI: 10.7717/peerj.12008] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 07/27/2021] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE To investigate the effect of resin infiltrant on resistance of sound permanent enamel surfaces to demineralization. METHOD Eighty healthy premolars were sectioned to obtain enamel blocks from the buccal surface. Specimens with baseline surface microhardness values of 320-370 were selected. The experimental group were treated with resin infiltrant, while the control group was not. Specimens from each group were artificially demineralized and the surface microhardness values were measured again. Confocal laser scanning microscopy was used to measure the depth of demineralization and detect the penetration ability of the resin infiltrant. The specimens were subjected to a simulated toothbrushing abrasion test. Scanning electron microscopy was used to observe changes in the surface morphology of specimens after each of these procedures. RESULTS No significant differences between the experimental and control groups were observed in the baseline microhardness values or in the experimental group after resin infiltration compared with the baseline conditions. After artificial demineralization, the microhardness value in the control group was significantly lower than that in the experimental group (266.0 (±34.5) compared with 304.0 (±13.0), P = 0.017). Confocal laser scanning microscopy results showed that the demineralization depth in the control group was significantly deeper than that in the experimental group (97.9 (±22.8) µm vs. 50.4 (±14.3) µm, P < 0.001), and that resin infiltrant completely penetrated the acid-etched demineralized area of the tooth enamel with a mean penetration depth of 31.6 (±9.0) µm. Scanning electron microscopy showed that the surface morphology was more uniform and smoother after simulated toothbrushing. The enamel surface structure was more severely destroyed in the control group after artificial demineralization compared with that of the experimental group. CONCLUSION Resin infiltrant can completely penetrate an acid-etched demineralized enamel area and improve resistance of sound enamel surfaces to demineralization. Our findings provide an experimental basis for preventive application of resin infiltrant to sound enamel surfaces to protect tooth enamel against demineralization.
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Affiliation(s)
- Meng Li
- Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Zhengyan Yang
- Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yajing Huang
- Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yueheng Li
- Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Zhi Zhou
- Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
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13
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Al-Saeed EJ, AlMarhoon ZW, Al-Eid ZAA, AlAhmari TA, AlJamed SH, AlSarhan R, AlShehri A, Al-Debasi YT, Badaoud OM, AlHussain BS. Properties, Success, and Applications of Resin Infiltration for Minimal Invasive Restoration: A Scoping Review. ARCHIVES OF PHARMACY PRACTICE 2022. [DOI: 10.51847/nabhjpaqo7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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14
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Desai H, Stewart CA, Finer Y. Minimally Invasive Therapies for the Management of Dental Caries—A Literature Review. Dent J (Basel) 2021; 9:dj9120147. [PMID: 34940044 PMCID: PMC8700643 DOI: 10.3390/dj9120147] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 11/28/2021] [Accepted: 12/01/2021] [Indexed: 02/07/2023] Open
Abstract
In recent years, due to a better understanding of the caries pathology and advances in dental materials, the utilization of non-invasive and minimally invasive techniques that delay/obviate the need for traditional restorations has started gaining momentum. This literature review focuses on some of these approaches, including fluoride varnish, silver diamine fluoride, resin sealants, resin infiltration, chemomechanical caries removal and atraumatic restorative treatment, in the context of their chemistries, indications for use, clinical efficacy, factors determining efficacy and limitations. Additionally, we discuss strategies currently being explored to enhance the antimicrobial properties of these treatment modalities to expand the scope of their application.
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Affiliation(s)
- Hetal Desai
- Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, Canada; (H.D.); (C.A.S.)
| | - Cameron A. Stewart
- Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, Canada; (H.D.); (C.A.S.)
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Yoav Finer
- Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, Canada; (H.D.); (C.A.S.)
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Correspondence:
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15
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Zeng S, Huang Y, Huang W, Pathak JL, He Y, Gao W, Huang J, Zhang Y, Zhang J, Dong H. Real-Time Monitoring and Quantitative Evaluation of Resin In-Filtrant Repairing Enamel White Spot Lesions Based on Optical Coherence Tomography. Diagnostics (Basel) 2021; 11:diagnostics11112046. [PMID: 34829392 PMCID: PMC8618956 DOI: 10.3390/diagnostics11112046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/02/2021] [Accepted: 11/02/2021] [Indexed: 01/11/2023] Open
Abstract
The aim of the present study was to explore the feasibility of real-time monitoring and quantitative guiding the repair of enamel white spot lesions (WSLs) with resin infiltration by optical coherence tomography (OCT). Seven New Zealand rabbits were treated with 37% phosphoric acid etchant for 15 min to establish the model of enamel demineralization chalk spots of upper incisors, which were repaired by Icon resin infiltrant. OCT, stereo microscope (SM) imaging, scanning electron microscope (SEM) imaging and hematoxylin eosin (HE) staining were used to image each operation step. The changes of WSLs of enamel before and in the process of restoration with resin infiltrant showed specific performance in OCT images, which were consistent with the corresponding results of stereomicroscope and SEM. OCT can non-invasively and accurately image the whole process of repairing enamel demineralization layer with resin infiltration real-time, which can effectively guide the clinical use of resin infiltrant to repair enamel WSLs and be used as an imaging tool to evaluate the process and effect of restoration with resin infiltrant at the same time.
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Affiliation(s)
- Sujuan Zeng
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Yuhang Huang
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Wenyan Huang
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Janak L. Pathak
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Yanbing He
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China; (S.Z.); (Y.H.); (W.H.); (J.L.P.); (Y.H.)
| | - Weijian Gao
- Department of Biomedical Engineering, School of Basic Medical Sciences, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou Medical University, Guangzhou 511436, China; (W.G.); (J.H.); (Y.Z.)
| | - Jing Huang
- Department of Biomedical Engineering, School of Basic Medical Sciences, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou Medical University, Guangzhou 511436, China; (W.G.); (J.H.); (Y.Z.)
| | - Yiqing Zhang
- Department of Biomedical Engineering, School of Basic Medical Sciences, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou Medical University, Guangzhou 511436, China; (W.G.); (J.H.); (Y.Z.)
| | - Jian Zhang
- Department of Biomedical Engineering, School of Basic Medical Sciences, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou Medical University, Guangzhou 511436, China; (W.G.); (J.H.); (Y.Z.)
- Correspondence:
| | - Huixian Dong
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Regenerative Medicine, Guangzhou 510182, China;
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16
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Tavares MI, Saraiva J, do Vale F, Coelho AS, Amaro IF, Marto CM, Francisco I, Ferreira MM, Paula AB, Carrilho EV. Resin infiltration in white spot lesions caused by orthodontic hypomineralisation: a minimally invasive therapy. Br Dent J 2021; 231:387-392. [PMID: 34625686 DOI: 10.1038/s41415-021-3476-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 02/17/2021] [Indexed: 01/11/2023]
Abstract
Objective White spot lesions are characterised by the presence of clinically detectable opaque lesions due to enamel demineralisation. These frequently present in patients following fixed orthodontic treatment, mostly due to the prolonged accumulation of bacterial plaque on the dental surface. When remineralisation is not achieved through good oral hygiene and prophylaxis with fluoride products, the infiltration of lesions with low-viscosity photopolymerised resin has proved to be a valid micro-invasive alternative compared to traditional conservative therapy.Clinical considerations A case series will be presented, where the chosen approach was resin infiltration, a micro-invasive and aesthetic technique.Clinical significance Infiltrative resin therapies are single-session procedures that reduce the need for more invasive therapies such as the use of rotary instruments for greater patient comfort. The need for periodic fluoride applications is also avoided. This approach increases the durability of the infiltrated lesion without compromising its mechanical properties and impedes the development of recurrent or secondary caries.Conclusions Resin infiltration might be considered as a routine procedure in the treatment of post-eruptive hypomineralised lesions. This follows the line of thought of minimally invasive dentistry, is an excellent treatment option and prevents the lesion's progression.
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Affiliation(s)
- Maria Inês Tavares
- University of Coimbra, Institute of Integrated Clinical Practice, Faculty of Medicine, 3000-075 Coimbra, Portugal
| | - José Saraiva
- University of Coimbra, Institute of Integrated Clinical Practice, Faculty of Medicine, 3000-075 Coimbra, Portugal
| | - Francisco do Vale
- University of Coimbra, Institute of Orthodontics, Faculty of Medicine, 3000-075 Coimbra, Portugal
| | - Ana Sofia Coelho
- University of Coimbra, Institute of Integrated Clinical Practice, Faculty of Medicine, 3000-075 Coimbra, Portugal; University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, 3000-548 Coimbra, Portugal; University of Coimbra, Centre for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; Clinical Academic Centre of Coimbra (CACC), 3004-561 Coimbra, Portugal
| | - Inês Flores Amaro
- University of Coimbra, Institute of Integrated Clinical Practice, Faculty of Medicine, 3000-075 Coimbra, Portugal
| | - Carlos Miguel Marto
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, 3000-548 Coimbra, Portugal; University of Coimbra, Centre for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; Clinical Academic Centre of Coimbra (CACC), 3004-561 Coimbra, Portugal; University of Coimbra, Institute of Experimental Pathology, Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Inês Francisco
- University of Coimbra, Institute of Orthodontics, Faculty of Medicine, 3000-075 Coimbra, Portugal
| | - Manuel Marques Ferreira
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, 3000-548 Coimbra, Portugal; University of Coimbra, Centre for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; Clinical Academic Centre of Coimbra (CACC), 3004-561 Coimbra, Portugal; University of Coimbra, Institute of Endodontics, Faculty of Medicine, 3000-075 Coimbra, Portugal
| | - Anabela Baptista Paula
- University of Coimbra, Institute of Integrated Clinical Practice, Faculty of Medicine, 3000-075 Coimbra, Portugal; University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, 3000-548 Coimbra, Portugal; University of Coimbra, Centre for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; Clinical Academic Centre of Coimbra (CACC), 3004-561 Coimbra, Portugal.
| | - Eunice Virgínia Carrilho
- University of Coimbra, Institute of Integrated Clinical Practice, Faculty of Medicine, 3000-075 Coimbra, Portugal; University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), area of Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, 3000-548 Coimbra, Portugal; University of Coimbra, Centre for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; Clinical Academic Centre of Coimbra (CACC), 3004-561 Coimbra, Portugal
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17
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Marouane O, Manton DJ. The influence of lesion characteristics on application time of an infiltrate applied to MIH lesions on anterior teeth: An exploratory in vivo pilot study. J Dent 2021; 115:103814. [PMID: 34543698 DOI: 10.1016/j.jdent.2021.103814] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/02/2021] [Accepted: 09/07/2021] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES To evaluate the factors that influences the kinetics of resin infiltration of molar incisor hypomineralisation (MIH) lesions on permanent anterior teeth. METHODS Demarcated MIH lesions with homogeneous and heterogeneous lesion body appearance, Types 1 (n = 14) and 2 (n = 18), respectively, were selected. After removal of the lesion surface layer using a tapered diamond finishing bur, the lesions were etched and ethanol was applied to the lesions and it was determined if the lesion was still visible or not. Images were taken just prior infiltrant (Icon; DMG) application (T0), during the infiltration process (Tx) and when infiltration had ceased progressing or opacity disappearance was clinically apparent (Tmax). Surface-area measurements of the opacity and infiltrated area were calculated and the infiltration proportion (IPx) was calculated over the infiltration time. RESULTS Type 1 and positive ethanol test lesions showed significantly lower mean Tmax (3.4 min) in comparison with Type 2 and negative ethanol test lesions (9.9 min) [Student t-test/Fisher's exact test; p < .01]. A non-linear correlation was observed (R2 = 0.88) indicating that the IPx was rapid at the beginning of resin application, decreasing over time. CONCLUSION In comparison with Type 1 and positive ethanol test lesions, Type 2 and negative ethanol test lesions require longer application time to infiltrate. CLINICAL SIGNIFICANCE MIH-lesion type and the 'ethanol test' were reliable predictive factors for the application time required for infiltrating MIH lesions on permanent anterior teeth.
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Affiliation(s)
- Omar Marouane
- Restorative Dentistry and Endodontics, Private Practice, Oralys Dental Clinic Tunis, Tunisia.
| | - David John Manton
- Paediatric Dentistry and Cariology, Centrum voor Tandheelkunde en Mondzorgkunde, UMCG, University of Groningen, Groningen, the Netherlands.
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18
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Hashemian A, Shahabi S, Behroozibakhsh M, Najafi F, Abdulrazzaq Jerri Al-Bakhakh B, Hajizamani H. A modified TEGDMA-based resin infiltrant using polyurethane acrylate oligomer and remineralising nano-fillers with improved physical properties and remineralisation potential. J Dent 2021; 113:103810. [PMID: 34530057 DOI: 10.1016/j.jdent.2021.103810] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/25/2021] [Accepted: 08/31/2021] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVES This study aimed to modify an experimental triethylene glycol dimethacrylate (TEGDMA) based resin infiltrant using PUA oligomer and two remineralising fillers, including fluorohydroxyapatite (FHA) and fluoride-doped bioactive glass (FD-BG), to improve the mechanical and physical properties and induce remineralising potential. MATERIALS AND METHODS The polyurethane acrylate oligomer (PUA) was synthesised and characterised. Experimental resin infiltrant was prepared by mixing 10% of synthesised PUA with 88% TEGDMA. Water contact angle, penetration coefficient, and penetration depth were then measured. The FHA and FD-BG fillers were synthesised and characterised. To prepare nano-filled resin infiltrant, 5% of each powder was mixed with the prepared resin infiltrant. The prepared resin infiltrants were characterised to evaluate their degree of conversion, mechanical properties, water sorption, and solubility. The ion release of filled resin was also assessed. The non-infiltrated and infiltrated enamel specimens underwent fourteen days of pH-cycling, and a surface microhardness was done to assess the resistance to demineralisation. RESULTS The results showed that the addition of PUA to TEGDMA increased the mechanical properties and decreased water sorption and solubility. The addition of synthesised FD-BG fillers to resin infiltrant significantly improved the resistance to demineralisation of enamel samples compared with other groups (p ≤ 0.001). The FHA fillers also improved the resistance to demineralisation; however, the produced changes were not statistically meaningful (p > 0.05). CONCLUSIONS Based on the results, the PUA+TEGDMA+ FD-BG/FHA composite can be used as an alternative material for pure TEGDMA in enamel infiltration approaches owing to its better mechanical properties, lower water sorption and solubility, and also remineralisation potential. CLINICAL SIGNIFICANCE A resin infiltrant with remineralisation potential, lower water sorption and solubility and higher mechanical properties may enhance the management of early caries lesions.
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Affiliation(s)
- Atieh Hashemian
- Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences (TUMS), Ghods Street, Keshavarz Blvd., Tehran, Iran. 14176-14411, Tehran, Iran
| | - Sima Shahabi
- Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences (TUMS), Ghods Street, Keshavarz Blvd., Tehran, Iran. 14176-14411, Tehran, Iran
| | - Marjan Behroozibakhsh
- Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences (TUMS), Ghods Street, Keshavarz Blvd., Tehran, Iran. 14176-14411, Tehran, Iran.
| | - Farhood Najafi
- Department of Resin and Additives, Institute for Color Science and Technology, P.O. Box:16765-564, Tehran, Iran
| | | | - Hamidreza Hajizamani
- Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences (TUMS), Ghods Street, Keshavarz Blvd., Tehran, Iran. 14176-14411, Tehran, Iran
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Fernandez CC, Sokolonski AR, Fonseca MS, Stanisic D, Araújo DB, Azevedo V, Portela RD, Tasic L. Applications of Silver Nanoparticles in Dentistry: Advances and Technological Innovation. Int J Mol Sci 2021; 22:2485. [PMID: 33801230 PMCID: PMC7957900 DOI: 10.3390/ijms22052485] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/21/2021] [Accepted: 02/21/2021] [Indexed: 12/13/2022] Open
Abstract
Silver nanoparticles (AgNPs) have been successfully applied in several areas due to their significant antimicrobial activity against several microorganisms. In dentistry, AgNP can be applied in disinfection, prophylaxis, and prevention of infections in the oral cavity. In this work, the use of silver nanoparticles in dentistry and associated technological innovations was analyzed. The scientific literature was searched using PubMed and Scopus databases with descriptors related to the use of silver nanoparticles in dentistry, resulting in 90 open-access articles. The search for patents was restricted to the A61K code (International Patent Classification), using the same descriptors, resulting in 206 patents. The results found were ordered by dental specialties and demonstrated the incorporation of AgNPs in different areas of dentistry. In this context, the search for patents reaffirmed the growth of this technology and the dominance of the USA pharmaceutical industry over AgNPs product development. It could be concluded that nanotechnology is a promising area in dentistry with several applications.
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Affiliation(s)
- Clara Couto Fernandez
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (C.C.F.); (M.S.F.)
| | - Ana Rita Sokolonski
- Laboratory of Oral Biochemistry, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (A.R.S.); (D.B.A.)
| | - Maísa Santos Fonseca
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (C.C.F.); (M.S.F.)
| | - Danijela Stanisic
- Laboratory of Chemical Biology, Institute of Chemistry, State University of Campinas, Campinas, SP 13083-970, Brazil; (D.S.); (L.T.)
| | - Danilo Barral Araújo
- Laboratory of Oral Biochemistry, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (A.R.S.); (D.B.A.)
| | - Vasco Azevedo
- Laboratory of Cellular and Molecular Genetics, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, MG 31270-901, Brazil;
| | - Ricardo Dias Portela
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, BA 40140-100, Brazil; (C.C.F.); (M.S.F.)
| | - Ljubica Tasic
- Laboratory of Chemical Biology, Institute of Chemistry, State University of Campinas, Campinas, SP 13083-970, Brazil; (D.S.); (L.T.)
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Cuppini M, Garcia IM, de Souza VS, Zatta KC, Visioli F, Leitune VCB, Guterres SS, Scholten JD, Collares FM. Ionic liquid-loaded microcapsules doped into dental resin infiltrants. Bioact Mater 2021; 6:2667-2675. [PMID: 33665499 PMCID: PMC7895677 DOI: 10.1016/j.bioactmat.2021.02.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 01/02/2021] [Accepted: 02/01/2021] [Indexed: 12/31/2022] Open
Abstract
Resin infiltrants have been effectively applied in dentistry to manage non-cavitated carious lesions in proximal dental surfaces. However, the common formulations are composed of inert methacrylate monomers. In this study, we developed a novel resin infiltrant with microcapsules loaded with an ionic liquid (MC-IL), and analyzed the physical properties and cytotoxicity of the dental resin. First, the ionic liquid 1-n-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (BMI.NTf2) was synthesized. BMI.NTf2 has previously shown antibacterial activity in a dental resin. Then, MC-IL were synthesized by the deposition of a preformed polymer. The MC-IL were analyzed for particle size and de-agglomeration effect via laser diffraction analysis and shape via scanning electron microscopy (SEM). The infiltrants were formulated, and the MC-IL were incorporated at 2.5%, 5%, and 10 wt%. A group without MC-IL was used as a control. The infiltrants were evaluated for ultimate tensile strength (UTS), contact angle, surface free energy (SFE), and cytotoxicity. The MC-IL showed a mean particle size of 1.64 (±0.08) μm, shriveled aspect, and a de-agglomeration profile suggestive of nanoparticles' presence in the synthesized powder. There were no differences in UTS among groups (p > 0.05). The incorporation of 10 wt% of MC-IL increased the contact angle (p < 0.05), while the addition from 5 wt% reduced the SFE in comparison to the control group (p < 0.05). The human cell viability was above 90% for all groups (p > 0.05). The incorporation of microcapsules as a drug-delivery system for ionic liquids may be a promising strategy to improve dental restorative materials. Ionic liquid was used as core of synthesized polymeric-based microcapsules. Microcapsules doped with ionic liquid were incorporated into a dental resin. The dental resins presented proper mechanical and biocompatibility properties. The particles incorporation reduced the surface free energy of dental resins. Biointeractivity may be obtained through MC-IL addition into dental resins.
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Affiliation(s)
- Marla Cuppini
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos Street, 2492, Rio Branco, 90035-003, Porto Alegre, RS, Brazil
| | - Isadora Martini Garcia
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos Street, 2492, Rio Branco, 90035-003, Porto Alegre, RS, Brazil
| | - Virgínia Serra de Souza
- Laboratory of Molecular Catalysis, Institute of Chemistry, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue, 9500, Agronomia, 91501-970, Porto Alegre, RS, Brazil
| | - Kelly Cristine Zatta
- Cosmetology and Pharmaceutical Nanotechnology Laboratory, School of Pharmaceutical Sciences, Universidade Federal do Rio Grande do Sul, Av. Ipiranga 2752, 90610-000, Porto Alegre, RS, Brazil
| | - Fernanda Visioli
- Oral Pathology Department, School of Dentistry, Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2492, Rio Branco, 90035-003, Porto Alegre, RS, Brazil
| | - Vicente Castelo Branco Leitune
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos Street, 2492, Rio Branco, 90035-003, Porto Alegre, RS, Brazil
| | - Sílvia Stanisçuazki Guterres
- Cosmetology Laboratory, School of Pharmaceutical Sciences, Universidade Federal do Rio Grande do Sul, Av. Ipiranga 2752, 90610-000, Porto Alegre, RS, Brazil
| | - Jackson Damiani Scholten
- Laboratory of Molecular Catalysis, Institute of Chemistry, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue, 9500, Agronomia, 91501-970, Porto Alegre, RS, Brazil
| | - Fabrício Mezzomo Collares
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos Street, 2492, Rio Branco, 90035-003, Porto Alegre, RS, Brazil
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Aldhaian BA, Balhaddad AA, Alfaifi AA, Levon JA, Eckert GJ, Hara AT, Lippert F. In vitro demineralization prevention by fluoride and silver nanoparticles when applied to sound enamel and enamel caries-like lesions of varying severities. J Dent 2020; 104:103536. [PMID: 33217487 DOI: 10.1016/j.jdent.2020.103536] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/12/2020] [Accepted: 11/15/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES To investigate the effect of fluoride and silver nanoparticles on the prevention of in vitro demineralization of sound enamel and enamel caries-like lesions of varying severities. METHODS Caries-like lesions of different severities (1/6/15 days) were created in bovine enamel specimens. One group remained sound. All specimens were demineralized again using a partially saturated acetic acid solution. Mimicking the intra-oral retention of fluoride and silver in vitro, this solution was supplemented with fluoride (0/1/10 ppm) and/or silver nanoparticles (0/10 ppm) in a factorial design. Changes in lesion depth (ΔL) and integrated mineral loss (ΔΔZ) were evaluated by digital transverse microradiography. Data was analyzed using three-way ANOVA. RESULTS Lesion severity significantly affected ΔΔZ and ΔL, after no treatment and after the treatment of fluoride and silver independently (p = 0.012 and p = 0.037, respectively). Fluoride and the fluoride × lesion severity interaction were shown to be significant (p < 0.001) on ΔΔZ and ΔL. Silver nanoparticles significantly affected ΔΔZ (p = 0.041), but not ΔL (p = 0.15). The silver nanoparticles × lesion severity interaction was significant for ΔΔZ and ΔL (p = 0.032 and p = 0.024, respectively). No interaction was observed for ΔΔZ and ΔL between fluoride and silver (p = 0.962 and p = 0.971, respectively) as well as lesion severity and the use of fluoride and silver combined (p = 0.722 and p = 0.158, respectively). CONCLUSION Fluoride and silver nanoparticles had a significant effect on the prevention of in vitro demineralization of sound enamel and enamel caries-like lesions of varying severities. CLINICAL SIGNIFICANCE Fluoride and silver nanoparticles may potentially allow for more tailored caries prevention.
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Affiliation(s)
- Bader A Aldhaian
- Indiana University School of Dentistry, Department of Prosthodontics, 1121 W Michigan St., Indianapolis, IN, 46202, USA; King Saud Bin Abdulaziz University for Health Sciences, College of Dentistry, Department of Prosthodontics, Riyadh, Saudi Arabia
| | - Abdulrahman A Balhaddad
- Department of Restorative Dental Sciences, Imam Abdulrahman Bin Faisal University, College of Dentistry, Dammam, Saudi Arabia
| | - Areej A Alfaifi
- Indiana University School of Dentistry, Department of Prosthodontics, 1121 W Michigan St., Indianapolis, IN, 46202, USA; King Saud Bin Abdulaziz University for Health Sciences, College of Dentistry, Department of Prosthodontics, Riyadh, Saudi Arabia
| | - John A Levon
- Indiana University School of Dentistry, Department of Prosthodontics, 1121 W Michigan St., Indianapolis, IN, 46202, USA
| | - George J Eckert
- Indiana University School of Medicine, Department of Biostatistics, 410 W. Tenth St., Suite 3000, Indianapolis, IN, 46202, USA
| | - Anderson T Hara
- Indiana University School of Dentistry, Department of Cariology, Operative Dentistry and Dental Public Health, 1121 W Michigan St, Indianapolis, IN, 46202, USA
| | - Frank Lippert
- Indiana University School of Dentistry, Department of Cariology, Operative Dentistry and Dental Public Health, 1121 W Michigan St, Indianapolis, IN, 46202, USA.
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Wang L, Freitas MCCDA, Prakki A, Mosquim V, González AHM, Rios D, Honório HM. Experimental self-etching resin infiltrants on the treatment of simulated carious white spot lesions. J Mech Behav Biomed Mater 2020; 113:104146. [PMID: 33125956 DOI: 10.1016/j.jmbbm.2020.104146] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 11/16/2022]
Abstract
OBJECTIVES To evaluate the penetration depth (μm) of experimental resin infiltrants containing different percentages of triethylene glycol dimethacrylate (TEGDMA) and phosphoric acid 2-hydroxyethyl methacrylate ester (PAM) in artificial carious white spot lesions (WSL). METHODS WSL were produced in 65 bovine flat enamel specimens by pH cycling protocol, which were treated with either Icon (control) or experimental acidic infiltrants based on different percentages of TEGDMA and PAM monomers (acidic), and their association or not with previous acid-etching with phosphoric acid. Ten readings using Confocal Laser Scanning Microscopy were conducted on each specimen and the penetration depth was calculated from the surface until the deepest point with the fluorescent dye Rhodamine B (0.02 mg/mL). The pH and the viscosity of the experimental infiltrants were also tested. Data were statistically analyzed with two-way ANOVA and Tukey tests (α < 0.05). RESULTS The material factor and the interaction material*acid-etching were statistically significant. The lowest penetration depth was observed for the samples treated with the commercial infiltrant after etching with 15% hydrochloric acid. When specimens were pre-treated with PA, highest penetration was seen for specimens treated with 100% TEGDMA, which differed from all other groups. The lowest penetration was seen for those treated with 50:50 TEGDMA:PAM infiltrants. When specimens were not previously etched, highest penetration was seen for Icon, which differed only from those treated with 25% TEGDMA 75% PAM, where the lowest values were seen. The values of viscosity increased and the pH decreased with the addition of PAM in the infiltrant formulations. CONCLUSION the association between TEGDMA and PAM seems to allow similar infiltration depth reached by Icon infiltrant without acid etching the enamel surface.
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Affiliation(s)
- Linda Wang
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru-SP, Brazil.
| | - Maria Cristina Carvalho de Almendra Freitas
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru-SP, Brazil; DeVry FACID, DeVry Education Group, Teresina-PI, Brazil
| | - Anuradha Prakki
- Faculty of Dentistry, University of Toronto, Restorative Department, Toronto-ON, Canada
| | - Victor Mosquim
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru-SP, Brazil
| | | | - Daniela Rios
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru-SP, Brazil
| | - Heitor Marques Honório
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru-SP, Brazil
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3D imaging of proximal caries in posterior teeth using optical coherence tomography. Sci Rep 2020; 10:15754. [PMID: 32978464 PMCID: PMC7519687 DOI: 10.1038/s41598-020-72838-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 09/07/2020] [Indexed: 11/08/2022] Open
Abstract
Optical coherence tomography (OCT) can create cross-sectional images of tooth without X-ray exposure. This study aimed to investigate the diagnostic accuracy of 3D imaging of OCT for proximal caries in posterior teeth. Thirty-six human molar teeth with 51 proximal surfaces visibly 6 intact, 16 slightly demineralized, and 29 distinct carious changes were mounted to take digital radiographs and 3D OCT images. The sensitivity, specificity and area under the receiver operating characteristic curve (AUC) for the diagnosis of enamel caries and dentin caries were calculated to quantify the diagnostic ability of 3D OCT in comparison with digital radiography. Diagnostic accuracy was evaluated by the agreement with histology using weighted Kappa. OCT showed significantly higher sensitivity, AUC and Kappa values than radiography. OCT can be a safer option for the diagnosis of proximal caries in posterior teeth that can be applied to the patients without X-ray exposure.
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Yu J, Huang X, Zhou X, Han Q, Zhou W, Liang J, Xu HHK, Ren B, Peng X, Weir MD, Li M, Cheng L. Anti-caries effect of resin infiltrant modified by quaternary ammonium monomers. J Dent 2020; 97:103355. [PMID: 32380134 DOI: 10.1016/j.jdent.2020.103355] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/24/2020] [Accepted: 04/28/2020] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES Resin infiltrant is used in early enamel caries. However, commercial resin infiltrant lacks persistent antibacterial activity. Dimethylaminododecyl methacrylate (DMADDM) was added to resin infiltrant to give it sustainable antibacterial properties and inhibit demineralization. METHODS After the application of resin infiltrant to bovine enamel, cytotoxicity, surface roughness, and aesthetics were assessed. A multi-species biofilm was incubated on the enamel disk before and one month after microbial-aging. After a 48-h anaerobic incubation, biomass accumulation, metabolic activity, and lactic acid were analyzed using a crystal violet assay, an MTT (3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, and a lactic acid assay. Biofilm structure and composition were determined by live/dead staining, exopolysaccharide (EPS) staining, scanning electron microscopy (SEM), and quantitative polymerase chain reaction (qPCR). The depth and content of demineralization were tested by transverse microradiography (TMR). RESULTS Incorporating DMADDM did not increase the cytotoxicity or change the physical properties when the mass fraction of the DMADDM was 2.5-10 %. The modification decreased the amount of bacterial biofilm, metabolic activity, lactic acid production, EPS, and the proportion of Streptococcus mutans in the biofilms. It also provided anti-demineralization effects. The surface roughness and antibacterial ability were not changed after one month of microbial-aging. CONCLUSION The incorporation of DMADDM improved the antibacterial and anti-demineralization effects of the material. It demonstrated a sustained antibacterial effect. CLINICAL SIGNIFICANCE The antibacterial modification might be a potential choice for future clinical applications to inhibit early enamel caries.
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Affiliation(s)
- Jinzhao Yu
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China; Department of Endodontics, Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Xiaoyu Huang
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Qi Han
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Wen Zhou
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Jingou Liang
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, 21201, USA
| | - Biao Ren
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Xian Peng
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, 21201, USA
| | - Mingyun Li
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China.
| | - Lei Cheng
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China.
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