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Santos M, Leandro F, Barroso H, Delgado AHS, Proença L, Polido M, Vasconcelos e Cruz J. Antibacterial Effect of Ozone on Cariogenic Bacteria and Its Potential Prejudicial Effect on Dentin Bond Strength-An In Vitro Study. Pharmaceutics 2024; 16:614. [PMID: 38794276 PMCID: PMC11125016 DOI: 10.3390/pharmaceutics16050614] [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: 02/15/2024] [Revised: 04/28/2024] [Accepted: 04/28/2024] [Indexed: 05/26/2024] Open
Abstract
Ozone is increasingly utilized in dental caries treatment due to its antibacterial properties. In a context of limited studies and no consensus on protocols, this research aims to assess ozone's antibacterial efficacy on cariogenic bacteria and its potential adverse impact on dentin bond strength. Streptococcus mutans, Streptococcus sobrinus, Lactobacillus casei, and Actinomyces naeslundii suspensions were exposed to 40 μg/mL of ozone gas and 60 μg/mL of ozonated water (80 s) via a medical ozone generator. Negative and positive control groups (chlorhexidine 2%) were included, and UFC/mL counts were recorded. To examine microtensile bond strength (µTBS), 20 human molars were divided into four groups, and class I cavities were created. After ozone application, samples were restored using an etch-and-rinse and resin composite, then sectioned for testing. The SPSS v. 28 program was used with a significance level of 5%. The µTBS results were evaluated using one-way ANOVA, Tukey HSD, and Games-Howell. Bacterial counts reduced from 106 to 101, but dentin µTBS was significantly impacted by ozone (ANOVA, p < 0.001). Despite ozone's attractive antibacterial activity, this study emphasizes its detrimental effect on dentin adhesion, cautioning against its use before restorative treatments.
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Affiliation(s)
- Marta Santos
- Egas Moniz School of Health and Science, Monte da Caparica, 2829-511 Almada, Portugal; (M.S.); (F.L.); (H.B.); (A.H.S.D.); (L.P.); (M.P.)
| | - Flávia Leandro
- Egas Moniz School of Health and Science, Monte da Caparica, 2829-511 Almada, Portugal; (M.S.); (F.L.); (H.B.); (A.H.S.D.); (L.P.); (M.P.)
| | - Helena Barroso
- Egas Moniz School of Health and Science, Monte da Caparica, 2829-511 Almada, Portugal; (M.S.); (F.L.); (H.B.); (A.H.S.D.); (L.P.); (M.P.)
- Egas Moniz Center for Interdisciplinary Research (CiiEM), Monte da Caparica, 2829-511 Almada, Portugal
| | - António H. S. Delgado
- Egas Moniz School of Health and Science, Monte da Caparica, 2829-511 Almada, Portugal; (M.S.); (F.L.); (H.B.); (A.H.S.D.); (L.P.); (M.P.)
- Egas Moniz Center for Interdisciplinary Research (CiiEM), Monte da Caparica, 2829-511 Almada, Portugal
| | - Luís Proença
- Egas Moniz School of Health and Science, Monte da Caparica, 2829-511 Almada, Portugal; (M.S.); (F.L.); (H.B.); (A.H.S.D.); (L.P.); (M.P.)
- Egas Moniz Center for Interdisciplinary Research (CiiEM), Monte da Caparica, 2829-511 Almada, Portugal
| | - Mário Polido
- Egas Moniz School of Health and Science, Monte da Caparica, 2829-511 Almada, Portugal; (M.S.); (F.L.); (H.B.); (A.H.S.D.); (L.P.); (M.P.)
- Egas Moniz Center for Interdisciplinary Research (CiiEM), Monte da Caparica, 2829-511 Almada, Portugal
| | - Joana Vasconcelos e Cruz
- Egas Moniz School of Health and Science, Monte da Caparica, 2829-511 Almada, Portugal; (M.S.); (F.L.); (H.B.); (A.H.S.D.); (L.P.); (M.P.)
- Egas Moniz Center for Interdisciplinary Research (CiiEM), Monte da Caparica, 2829-511 Almada, Portugal
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Kibe K, Hatayama T, Shimada Y. In vitro performance of an autocured universal adhesive system in bonding to dentin. BMC Oral Health 2023; 23:933. [PMID: 38012568 PMCID: PMC10683120 DOI: 10.1186/s12903-023-03645-0] [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: 08/28/2023] [Accepted: 11/09/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND The successful integration of resin-based dental adhesives significantly impacts restorative dentistry, providing efficient and aesthetically pleasing caries treatments. Among various adhesives, one-step self-etching adhesives (1-SEAs) have gained popularity due to their simplicity and short application time. However, concerns have been raised regarding their bonding performance and marginal adaptation characteristics, which differ from two-step self-etching adhesives (2-SEAs) and three-step etch-and-rinse adhesives. Additionally, light-cured bonding materials may encounter challenges in deep cavities and inaccessible areas, necessitating extended light irradiation time. Autocured bonding materials are a potential solution, but limited comparative studies have been conducted on their performance. METHODS In this in vitro study, we evaluated a new autocured universal bonding material (Bondmer Lightless 2) and compared the results with recent light-cured bonding materials. Microshear bond strength (μSBS) tests were performed on 25 human molars using five different combinations of adhesives and composite resins: Bondmer Lightless 2 with Estelite Bulk Fill Flow (BE group), Bondmer Lightless 2 with a prototype composite resin (BO group), Prime&Bond Universal with SDR flow + (PS group), Scotchbond Universal with Filtek Bulk Fill (SF group), and G-Premio Bond with Gracefil BulkFlo (GG group). The bond strengths and failure modes were assessed using a universal testing machine and scanning electron microscope (SEM), respectively. Marginal adaptation was evaluated using swept-source optical coherence tomography (SS-OCT) and confocal laser scanning microscopy (CLSM) on 40 sound bovine maxillary incisors. RESULTS The μSBS test showed no significant differences in bond strength among the tested groups. Most failure modes were observed at the bond interface between the adhesive and the dentin. The autocured bonding material demonstrated significantly higher marginal adaptation (SI%) than PS, SF, and GG. The CLSM images corresponded with gaps observed in the SS-OCT images, indicating improved marginal sealing in the autocured group. CONCLUSIONS The new autocured universal bonding material exhibited comparable bond strength to a conventional light-cured material while demonstrating a superior marginal adaptation level. This finding suggested that the autocured material could be a valuable alternative, especially when extended light irradiation would pose a challenge. Further clinical studies would be warranted to evaluate the performance of the autocured bonding material in actual restorative dental practice.
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Affiliation(s)
- Kota Kibe
- Division of Oral Health Sciences, Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-Ku, Tokyo, 113-8510, Japan
| | - Takashi Hatayama
- Division of Oral Health Sciences, Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-Ku, Tokyo, 113-8510, Japan.
| | - Yasushi Shimada
- Division of Oral Health Sciences, Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-Ku, Tokyo, 113-8510, Japan
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Nakano EL, de Souza A, Boaro L, Catalani LH, Braga RR, Gonçalves F. Polymerization Stress and Gap Formation of Self-adhesive, Bulk-fill and Flowable Composite Resins. Oper Dent 2020; 45:E308-E316. [PMID: 32516396 DOI: 10.2341/19-166-l] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2020] [Indexed: 11/23/2022]
Abstract
CLINICAL RELEVANCE Bulk-fill materials show a similar or better performance than control flowable materials regarding interfacial integrity. However, some self-adhesive composites need improvements to achieve competitive performance. SUMMARY Objective: This laboratory study compared the polymerization stress and gap formation of self-adhesive, bulk-fill and control flowable composites. The degree of conversion (DC) and post-gel shrinkage were also assessed.Methods: Two self-adhesive (Vertise Flow and Fusio Liquid Dentin), two bulk-fill (Tetric N-Flow Bulk-Fill and Filtek Bulk-Fill Flowable Restorative), and two control flowable (Z350 XT Flowable Restorative and Tetric N-Flow) composites were evaluated. Polymerization stress (PS) was determined in a universal testing machine (n=5). Gap formation was evaluated by scanning electron microscopy in class I restorations (n=6). DC was measured by Fourier transform infrared spectroscopy (n=3). Post-gel volumetric shrinkage (VS) was measured using the strain gauge method (n=5). Data were submitted to one-way analysis of variance or a Kruskal-Wallis test (α=0.05).Results: Vertise Flow and Fusio Liquid Dentin presented the highest interfacial gap (27%±5% and 21%±6%, respectively), which was associated with their highest PS (4.1±0.8 MPa and 3.5±0.6 MPa, respectively) and DC (63%±2% and 60%±2%, respectively) in spite of the lowest VS (1.0%±0.2% and 1.0%±0.3%, respectively). Tetric N-Flow Bulk-Fill and Filtek Bulk-Fill Flowable Restorative presented similar PS (2.9± 0.3 MPa and 2.4±0.2 MPa, respectively) to both control materials. However, the Tetric N-Flow Bulk-Fill showed the lowest gap (7%±2%) and the highest DC (64.3%±0.4%), and the Filtek Bulk-fill presented a marginal gap (17.8%±3.4%) and a DC (54.5%±2.7%) similar to the control materials. The VS values of both bulk-fill materials were similar to those of Tetric N-Flow and lower than that of Z350 XT Flowable Restorative.Conclusions: Bulk-fill composites showed either similar or significantly lower interfacial gaps and PS than the control flowable composites. The self-adhesive composites showed a significantly higher gap percentage and PS than the control and bulk-fill materials.
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Han SH, Shimada Y, Sadr A, Tagami J, Yang SE. Interfacial Evaluation of CAD/CAM Resin Inlays on the Cavity Floor Using Swept-source Optical Coherence Tomography. Oper Dent 2020; 45:664-676. [PMID: 32997740 DOI: 10.2341/19-141-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2019] [Indexed: 11/23/2022]
Abstract
CLINICAL RELEVANCE When a resin nanoceramic inlay is cemented using self-adhesive cement, a universal dentin adhesive can be applied to the prepared cavity. The application of the adhesive before self-adhesive cement placement provides similar or better interfacial adaptation than without the adhesive. SUMMARY Purpose: The first objective of this study was to determine whether the luting material used for computer-aided design and computer-aided manufacture resin nanoceramic inlays affected interfacial adaptation. The second objective was to investigate whether application of a universal dentin adhesive before cementation affected interfacial adaptation. The final objective was to compare the inlay-side and dentin-side interfaces in the cement space.Methods and Materials: Seventy-four class I cavities were prepared on extracted human third molars. Cavities were optically scanned, and resin nanoceramic inlays were milled using Lava Ultimate blocks (3M ESPE). For the control groups, the fabricated inlays were cemented using Panavia V5 (Kuraray Noritake) or FujiCem 2 (GC). For the experimental groups, the teeth were randomly divided into groups I and II. Group I contained four subgroups using different luting materials; in all subgroups, the inlays were cemented and dual cured without pretreatment. Group II contained six subgroups in which inlays were cemented and dual cured after application of a universal dentin adhesive. After thermocycling, interfacial adaptation was measured using swept-source optical coherence tomography (SS-OCT) imaging and statistically compared among groups.Results: Interfacial adaptation was different depending on the luting material used (p<0.05). After application of a universal adhesive, some subgroups showed improved interfacial adaptation (p<0.05). In the comparison of inlay-side and dentin-side interfaces, no difference was found in interfacial adaptation (p>0.05).Conclusions: Interfacial adaptation for resin nanoceramic inlays differed with luting material. For some self-adhesive cements, application of a universal adhesive before cementation improved interfacial adaptation.
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Impact of Different Etching Strategies on Margin Integrity of Conservative Composite Restorations in Demineralized Enamel. MATERIALS 2020; 13:ma13204500. [PMID: 33050594 PMCID: PMC7600983 DOI: 10.3390/ma13204500] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/04/2020] [Accepted: 10/09/2020] [Indexed: 12/28/2022]
Abstract
Good margin integrity with a tight seal of the adhesive interface is considered one of the key factors for the clinical success of composite restorations. This study investigated the effect of enamel etching with phosphoric acid on the margin integrity of self-etch bonded composite restorations in demineralized enamel. Crowns of bovine incisors were assigned into 14 groups (n = 10 per group) of which ten groups (groups 1–5 and 8–12) were demineralized (21 days, acid buffer, pH 4.95) to create artificial carious lesions. Standardized Class V cavities were prepared in all specimens. Demineralized groups were either etched with phosphoric acid for 10, 30, 60, or 120 s (groups 2–5 and 9–12), or no etching was performed (groups 1 and 8). The non-demineralized (sound) groups were etched for 10 s (groups 7 and 14) or remained non-etched (groups 6 and 13). Resin composite restorations were then placed using either a one-step (iBond Self Etch, groups 1–7) or two-step self-etch adhesive (Clearfil SE Bond, groups 8–14). Margin integrity of the restorations was assessed after thermocycling (5000×, 5–55 °C) using scanning electron microscopy, and the percentage of continuous margins (%CM) was statistically analyzed (α = 0.05). Phosphoric acid etching significantly increased %CM in both demineralized and sound enamel. For iBond Self Etch, a significant increase in %CM in demineralized enamel was observed with increased etching times. All etched groups treated with Clearfil SE Bond and those etched for 60 or 120 s and treated with iBond Self Etch showed similar %CM in demineralized enamel as in etched sound enamel, and significantly higher %CM than in non-etched sound enamel. In conclusion, enamel etching with phosphoric acid improves margin integrity of composite restorations in demineralized enamel when bonded with the examined adhesives.
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Han SH, Shimada Y, Sadr A, Tagami J, Kum KY, Park SH. Effect of Pretreatment and Activation Mode on the Interfacial Adaptation of Nanoceramic Resin Inlay and Self-adhesive Resin Cement. Dent Mater 2020; 36:1170-1182. [PMID: 32536587 DOI: 10.1016/j.dental.2020.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/31/2020] [Accepted: 05/13/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The first objective of this study was to determine if the luting material used for resin nanoceramic inlay affects interfacial adaptation. The second was to investigate whether pretreatment and the adhesive curing method before cementation affects interfacial adaptation. The final objective was to compare activation modes of luting material. METHODS Class I cavities were prepared on extracted human third molars. Resin nanoceramic inlays were fabricated using Lava Ultimate CAD/CAM block (3 M). For the control groups, inlays were cemented using Panavia V5 (Kuraray Noritake). For the experimental groups, teeth were randomly divided into five experimental groups with four subgroups using different self-adhesive cements (SACs). Cement in Group I was dual-cured without pretreatment. In Group II, the cement was dual-cured after polyacrylic acid treatment of the tooth cavity. In Groups III and IV, the cement was dual-cured after universal dentin adhesive treatment with pre-cure and co-cure methods. In Group V, the inlay was cemented in self-cure mode. After thermocycling, interfacial adaptation at the inlay-tooth interface was measured using swept-source optical coherence tomography (SS-OCT) imaging. Finally, polymerization shrinkage strain of the luting material was measured and compared. RESULTS Interfacial adaptation differed depending on the luting material. After application of a universal adhesive, some subgroups showed improved interfacial adaptation. Interfacial adaptation and polymerization shrinkage strain differed significantly depending on activation mode. SIGNIFICANCE Interfacial adaptation for a resin nanoceramic inlay can differ according to the type of SAC and activation mode. For some SACs, application of a universal adhesive before cementation improves interfacial adaptation.
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Affiliation(s)
- Seung-Hoon Han
- Department of Conservative Dentistry, St. Vincent Hospital, College of Medicine, The Catholic University of Korea, 93 Jungbu-daero, Paldal-gu, Suwon, Gyeonggi-do, South Korea.
| | - Yasushi Shimada
- Department of Operative Dentistry, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8525, Japan; Department of Cariology and Operative Dentistry, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-0034 Japan.
| | - Alireza Sadr
- Department of Restorative Dentistry, School of Dentistry, University of Washington, 1959 NE Pacific St, B162, Seattle, WA, 98195 USA.
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-0034 Japan.
| | - Kee-Yeon Kum
- Department of Conservative Dentistry, Dental Research Institute, National Dental Care Center for Persons with Special Needs, Seoul National University Dental Hospital, Seoul National University School of Dentistry, 101 Daehak-ro, Jongno-gu, Seoul, 08030, Republic of Korea.
| | - Sung-Ho Park
- Department of Conservative Dentistry, Oral Science Research Center, College of Dentistry, Yonsei University, #50 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea.
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Sampaio CS, Fernández Arias J, Atria PJ, Cáceres E, Pardo Díaz C, Freitas AZ, Hirata R. Volumetric polymerization shrinkage and its comparison to internal adaptation in bulk fill and conventional composites: A μCT and OCT in vitro analysis. Dent Mater 2019; 35:1568-1575. [PMID: 31500903 DOI: 10.1016/j.dental.2019.07.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 07/10/2019] [Accepted: 07/25/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To quantify the volumetric polymerization shrinkage (VPS) of different conventional and bulk fill resin composites, through micro-computed tomography (μCT), and qualitative comparison of gap formation through optical coherence tomography (OCT). METHODS Box-shaped class I cavities were prepared in 30 third-molars and divided into 5 groups (n=6): G1- Filtek Z100 (Z100); G2- Tetric Evoceram Bulk Fill (TEC); G3- Tetric EvoFlow Bulk fill (TEF); G4- Filtek Bulk fill (FBU); and G5- Filtek Bulk fill Flowable (FBF). All groups were treated with Adper Single Bond Plus adhesive and light cured (Bluephase 20i). Each tooth was scanned three times using a μCT apparatus: after cavity preparation (empty scan); after cavity filling (uncured scan) and after light curing of the restorations (cured scan). The μCT images were imported into a three-dimensional rendering software, and volumetric polymerization shrinkage percentage was calculated (%) for each sample. In the same images, interfacial gaps in the pulpal floor were qualitatively evaluated. After μCT evaluation, the pulpal floor from each tooth was polished until a thin tooth structure was obtained and OCT images were obtained by scanning the pulpal portion. Gap formation was observed and qualitatively compared to the μCT images. RESULTS VPS means ranged from 2.31 to 3.96% for the studied resin composites. The bulk fill materials, either high viscosity or flowable, were not statistically different from each other (p>0.05). The conventional resin composite Z100 presented statistically higher VPS than both high viscosity bulk fill materials studied (p<0.05), although it was statistically similar to the flowable bulk fill materials studied (p>0.05). Both μCT and OCT methodologies enabled gap formation visualization, and images from both technologies could be associated. Gap formation was mostly observed for G1-Z100, G4-FBU, and G5-FBF. VPS% and pulpal gap formation could not be completely associated with each other for all groups and samples. Voids were observed in most of the resin composite fillings, and most VPS were observed in the occlusal area of the samples. SIGNIFICANCE Volumetric polymerization shrinkage was material-dependent, although bulk fill materials did not differ from each other. Both μCT and OCT enabled interfacial pulpal gap formation visualization. VPS and gap formation cannot be completely associated with one another.
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Affiliation(s)
- Camila S Sampaio
- Department of Biomaterials, School of Dentistry, Universidad de los Andes, Avenue Monseñor Alvaro del Portillo, 12455 Santiago, Chile; Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 First Avenue, 10010 New York, NY, USA.
| | - Jessica Fernández Arias
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 First Avenue, 10010 New York, NY, USA
| | - Pablo J Atria
- Department of Biomaterials, School of Dentistry, Universidad de los Andes, Avenue Monseñor Alvaro del Portillo, 12455 Santiago, Chile; Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 First Avenue, 10010 New York, NY, USA
| | - Eduardo Cáceres
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 First Avenue, 10010 New York, NY, USA; Department of Dental Materials, School of Dentistry, University Andres Bello, Quillota 980, Viña del Mar, Chile
| | - Carolina Pardo Díaz
- Department of Biomaterials, School of Dentistry, Universidad de los Andes, Avenue Monseñor Alvaro del Portillo, 12455 Santiago, Chile; Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227 - Butantã, São Paulo, SP, Brazil
| | - Anderson Z Freitas
- Nuclear and Energy Research Institute, IPEN-CNEN/SP, University of São Paulo, Av. Prof. Lineu Prestes, 2242 - Butantã, São Paulo, SP, Brazil
| | - Ronaldo Hirata
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 First Avenue, 10010 New York, NY, USA
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Bakhsh TA, Al-Jeffery B, Zaatari G, Badr H, Ameen S, Gashlan S, Dughmash L, Jamleh A. Evaluation of the adaptation of dental polymers using cross-polarization optical coherence tomography. Biomed Phys Eng Express 2019. [DOI: 10.1088/2057-1976/aafbad] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Han SH, Sadr A, Shimada Y, Tagami J, Park SH. Internal adaptation of composite restorations with or without an intermediate layer: Effect of polymerization shrinkage parameters of the layer material. J Dent 2018; 80:41-48. [PMID: 30391684 DOI: 10.1016/j.jdent.2018.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 10/19/2018] [Accepted: 10/31/2018] [Indexed: 10/27/2022] Open
Abstract
OBJECTIVES The purpose of this study was to compare the internal adaptation of resin composite restorations in Class I cavities with or without an intermediate layer, and to identify the relationships between the internal adaptation and the polymerization shrinkage parameters of the layer material. METHODS Class I cavities prepared in human third molars were treated with a one-step self-etch adhesive (G-Premio Bond, GC). In the control group, Tetric-EvoCeram Bulk-Fill (TBF, Ivoclar Vivadent) was placed using the bulk-fill technique and then light-cured. In the experimental groups, six different layer materials (three flowable resin composites, two bulk-fill resin composites, and a resin-modified glass-ionomer) were applied to a 1.5-mm thickness and light-cured, which was followed by TBF filling. After thermo-cycling, internal adaptation was measured using swept-source optical coherence tomography (SS-OCT) imaging and compared in terms of high brightness percentage (HB%) to represent the microgap. Shrinkage strain (SS), flexural modulus (FM), and polymerization shrinkage stress of the intermediate layer-resin composite complex (PS) were measured for each material. The relationships among HB%, SS, FM, and PS were evaluated statistically. RESULTS Groups with an intermediate layer showed lower HB% than the control group. The HB% correlated with PS (Pearson's correlation: R2 = 0.883, p < 0.05), and the PS correlated with the product of SS and FM. CONCLUSION Internal adaptation depended on the polymerization shrinkage stress of the intermediate layer-resin composite complex. CLINICAL SIGNIFICANCE Bulk-fill resin composite, which can show low polymerization shrinkage stress, may be used as an intermediate layer for better internal adaptation.
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Affiliation(s)
- Seung-Hoon Han
- Department of Conservative Dentistry, St. Vincent Hospital, College of Medicine, Catholic University of Korea, #93 Jungbu-daero, Paldal-gu, Suwon, Gyeonggi-do, South Korea.
| | - Alireza Sadr
- Department of Restorative Dentistry, School of Dentistry, University of Washington, 1959 NE Pacific St, B162, Seattle, WA, USA.
| | - Yasushi Shimada
- Department of Operative Dentistry, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan; Department of Cariology and Operative Dentistry, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 1-5-45, Japan.
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 1-5-45, Japan.
| | - Sung-Ho Park
- Department of Conservative Dentistry, Oral Science Research Center, College of Dentistry, Yonsei University, #50 Yonsei- ro, Seodaemun-gu, Seoul, Republic of Korea.
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Bakhsh TA, Altouki NH, Baeesa LS, Baamer RA, Alshebany RM, Natto Z, Nasir A, Turkistani A, Hasanain F, Naguib GH. Effect of self-etch adhesives on the internal adaptation of composite restoration: a CP-OCT Study. Odontology 2018; 107:165-173. [PMID: 30094650 DOI: 10.1007/s10266-018-0381-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 07/10/2018] [Indexed: 12/20/2022]
Abstract
Despite improvements in dental adhesive materials, internal adaptation remains a challenge in bonded restorations. The aim of this study was to compare microgaps and internal floor adaptation between two different self-etch adhesives in class-V cavities using cross-polarization optical coherence tomography (CP-OCT). In this in vitro study, standardized round class-V cavities were prepared in 20 non-carious human upper central incisor teeth. They were randomly divided into two groups, TN and SE, with each group receiving a different dental adhesive. In TN group, the adhesive used was all-in-one Tetric N-Bond Self-Etch (TN; Ivoclar/Vivadent, Liechtenstein), while SE group was bonded with two-step self-etch Clearfil SE Bond 2 adhesive (SE; Kuraray Noritake Dental Inc, Japan). The prepared cavities were restored with flowable composite and then stored in distilled water for 24 h. Next, they were immersed in silver nitrate, followed by immersion in a photo-developing solution. Optical comparison was carried out by CP-OCT to assess microgaps and composite adaptation at the cavity floor. A Mann-Whitney test was applied to the data, which showed a statistically significant difference in composite adaptation among the two groups (p < 0.001) with the SE group showing superior adaptation. CP-OCT is a reliable tool for non-invasive imaging that gives an insight into composite performance. Better adaptation was found with the two-step self-adhesive for the composite used in this study.
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Affiliation(s)
- Turki A Bakhsh
- Operative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia. .,Dental Department, International Medical Center, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia.
| | - Nour H Altouki
- Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia
| | - Lina S Baeesa
- Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia
| | - Ruba A Baamer
- Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia
| | - Reema M Alshebany
- Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia
| | - Zuhair Natto
- Department of Dental Public Health, Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia
| | - Adnan Nasir
- Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia
| | - Alaa Turkistani
- Operative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia
| | - Fatin Hasanain
- Operative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia
| | - Ghada H Naguib
- Division of Biomaterials, Department of Operative Dentistry, Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah, 215-89, Saudi Arabia.,Department of Oral Biology, Faculty of Dentistry, Cairo University, Manual Al Roda, Cairo, Egypt
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11
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Evaluation of Ultrasonic Bonding Strength with Optoacoustic Methods. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8071026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Turkistani A, Almutairi M, Banakhar N, Rubehan R, Mugharbil S, Jamleh A, Nasir A, Bakhsh T. Optical Evaluation of Enamel Microleakage with One-Step Self-Etch Adhesives. Photomed Laser Surg 2018; 36:589-594. [PMID: 29813001 DOI: 10.1089/pho.2018.4441] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE In this in vitro study, cross-polarization optical coherence tomography (CP-OCT) was used to evaluate microleakage in dental composite restorations bonded to enamel with two types of one-step self-etching (SE) adhesives. BACKGROUND DATA One-step SE adhesives were proposed to simplify bonding of composite restorations. However, bonding of these simplified adhesive to dental enamel is still questionable. OCT is a promising diagnostic tool that allows micron-scale imaging of biological tissues and structures. METHODS Class-V cavities (4-mm diameter × 1-mm depth) were prepared on the labial surfaces of extracted human anterior teeth with margins and floor located in enamel. The cavities were then divided into two groups (n = 5) and restored with either Tetric N-Bond Universal (Ivoclar Vivadent, Liechtenstein) or Palfique Bond (Tokuyama Dental Corporation, Japan), followed by Estelite Flow Quick flowable composite (Tokuyama Dental Corporation). After storage in 100% humidity for 24 h, specimens were immersed in ammoniacal silver nitrate solution for another 24 h. Later, they were rinsed and immersed in photo-developing solution under fluorescent light for 8 h. CP-OCT at 1310 nm center wavelength was used to scan seven two-dimensional cross-sectional images from each specimen. Each cross-sectional image was analyzed using ImageJ software to quantify interfacial microleakage at the cavity floor. RESULTS Student's t-test showed significant difference between the tested adhesives (p < 0.05). Palfique Bond adhesive presented inferior interfacial adaptation as it obtained higher values of floor microleakage compared to Tetric N-Bond Universal adhesive group. CONCLUSIONS CP-OCT enabled nondestructive quantitative assessment of microleakage in enamel dental restorations.
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Affiliation(s)
- Alaa Turkistani
- 1 Operative Dentistry Division, Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Maha Almutairi
- 2 Faculty of Dentistry, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Nouf Banakhar
- 2 Faculty of Dentistry, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Reem Rubehan
- 2 Faculty of Dentistry, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Sulafa Mugharbil
- 2 Faculty of Dentistry, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Ahmed Jamleh
- 3 King Abdullah International Medical Research Centre, King Saud bin Abdulaziz University for Health Sciences , Restorative and Prosthetic Dental Sciences, College of Dentistry, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Adnan Nasir
- 2 Faculty of Dentistry, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Turki Bakhsh
- 1 Operative Dentistry Division, Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University , Jeddah, Saudi Arabia
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Kaczor K, Gerula-Szymańska A, Smektała T, Safranow K, Lewusz K, Nowicka A. Effects of different etching modes on the nanoleakage of universal adhesives: A systematic review and meta-analysis. J ESTHET RESTOR DENT 2018; 30:287-298. [PMID: 29573132 DOI: 10.1111/jerd.12375] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of this systematic review was to evaluate how etching modes affect the nanoleakage of universal adhesive from in vitro studies. MATERIALS AND METHODS PubMed/MEDLINE, Web of Science, Scopus and Science Direct electronic databases were searched for in vitro studies that evaluated the nanoleakage of universal adhesives. A total of 511 (after duplicate removal) potentially relevant records were identified in the literature search. The titles and abstracts of the retrieved studies were screened by two independent researchers according to the main concept. Subsequently, the full text of potentially relevant studies was screened using the exclusion criteria. Thirteen studies were subjected to qualitative analysis, and 5 of them were selected for a detailed meta-analysis. RESULTS Seven universal adhesives were evaluated in this review. The meta-analysis demonstrated that the etch-and-rinse technique significantly reduced the nanoleakage of the Peak Universal and G-Bond Plus adhesives, whereas the self-etch mode reduced the nanoleakage of All-Bond Universal. In comparison, the etching technique did not significantly alter the nanoleakage of either Prime&Bond Elect or Scotchbond Universal which was characterized by the smallest nanoleakage. CONCLUSIONS Etching modes significantly, in various ways, influence the nanoleakage of universal adhesives. CLINICAL SIGNIFICANCE Contrary to the drive to simplify bonding technologies, an appreciation of their adhesive components and how these perform according to bonding technique could yield a knowledge-based practical approach that ultimately improves the longevity of direct composite restorations.
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Affiliation(s)
- Kinga Kaczor
- Department of Conservative Dentistry and Endodontics, Pomeranian Medical University in Szczecin, Poland
| | | | - Tomasz Smektała
- Department of Maxillofacial Surgery, Pomeranian Medical University in Szczecin, Poland
| | - Krzysztof Safranow
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Poland
| | - Katarzyna Lewusz
- The University Dental Clinic of Pomeranian Medical University in Szczecin, Poland
| | - Alicja Nowicka
- Department of Conservative Dentistry and Endodontics, Pomeranian Medical University in Szczecin, Poland
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14
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Minamino T, Mine A, Shintani A, Higashi M, Kawaguchi-Uemura A, Kabetani T, Hagino R, Imai D, Tajiri Y, Matsumoto M, Yatani H. Advanced Statistical Analyses to Reduce Inconsistency of Bond Strength Data. J Dent Res 2017; 96:1400-1405. [DOI: 10.1177/0022034517725691] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- T. Minamino
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - A. Mine
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - A. Shintani
- Department of Clinical Epidemiology and Biostatistics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - M. Higashi
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - A. Kawaguchi-Uemura
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - T. Kabetani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - R. Hagino
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - D. Imai
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Y. Tajiri
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - M. Matsumoto
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
- Division of Oral Health Science, Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine, Hokkaido, Japan
| | - H. Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
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Machoy M, Seeliger J, Szyszka-Sommerfeld L, Koprowski R, Gedrange T, Woźniak K. The Use of Optical Coherence Tomography in Dental Diagnostics: A State-of-the-Art Review. JOURNAL OF HEALTHCARE ENGINEERING 2017; 2017:7560645. [PMID: 29065642 PMCID: PMC5534297 DOI: 10.1155/2017/7560645] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/02/2017] [Accepted: 05/31/2017] [Indexed: 12/14/2022]
Abstract
Optical coherence tomography provides sections of tissues in a noncontact and noninvasive manner. The device measures the time delay and intensity of the light scattered or reflected from biological tissues, which results in tomographic imaging of their internal structure. This is achieved by scanning tissues at a resolution ranging from 1 to 15 μm. OCT enables real-time in situ imaging of tissues without the need for biopsy, histological procedures, or the use of X-rays, so it can be used in many fields of medicine. Its properties are not only particularly used in ophthalmology, in the diagnosis of all layers of the retina, but also increasingly in cardiology, gastroenterology, pulmonology, oncology, and dermatology. The basic properties of OCT, that is, noninvasiveness and low wattage of the used light, have also been appreciated in analytical technology by conservators, who use it to identify the quality and age of paintings, ceramics, or glass. Recently, the OCT technique of visualization is being tested in different fields of dentistry, which is depicted in the article.
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Affiliation(s)
- Monika Machoy
- Division of Orthodontics, Pomeranian Medical University in Szczecin, Ul. Powstańców Wlkp 72, 70-111 Szczecin, Poland
| | - Julia Seeliger
- Division of Orthodontics, Technical University Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Liliana Szyszka-Sommerfeld
- Division of Orthodontics, Pomeranian Medical University in Szczecin, Ul. Powstańców Wlkp 72, 70-111 Szczecin, Poland
| | - Robert Koprowski
- Department of Biomedical Computer Systems, Faculty of Computer Science and Materials Science, Institute of Computer Science, University of Silesia, Ul. Będzińska 39, 41-200 Sosnowiec, Poland
| | - Tomasz Gedrange
- Division of Orthodontics, Technical University Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Krzysztof Woźniak
- Division of Orthodontics, Pomeranian Medical University in Szczecin, Ul. Powstańców Wlkp 72, 70-111 Szczecin, Poland
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Makishi P, André CB, Ayres A, Martins AL, Giannini M. Effect of Storage Time on Bond Strength and Nanoleakage Expression of Universal Adhesives Bonded to Dentin and Etched Enamel. Oper Dent 2015; 41:305-17. [PMID: 26666389 DOI: 10.2341/15-163-l] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
PURPOSE To investigate bond strength and nanoleakage expression of universal adhesives (UA) bonded to dentin and etched enamel. METHODS Extracted human third molars were sectioned and ground to obtain flat surfaces of dentin (n = 36) and enamel (n = 48). Dentin and etched enamel surfaces were bonded with one of two UAs, All-Bond Universal (ABU) or Scotchbond Universal (SBU); or a two-step self-etching adhesive, Clearfil SE Bond (CSEB). A hydrophobic bonding resin, Adper Scotchbond Multi-Purpose Bond (ASMP Bond) was applied only on etched enamel. Following each bonding procedure, resin composite blocks were built up incrementally. The specimens were sectioned and subjected to microtensile bond strength (MTBS) testing after 24 hours or one year water storage, or immersed into ammoniacal silver nitrate solution after aging with 10,000 thermocycles and observed using scanning electron microscopy. The percentage distribution of silver particles at the adhesive/tooth interface was calculated using digital image-analysis software. RESULTS The MTBS (CSEB = SBU > ABU, for dentin; and CSEB > ABU = SBU = ASMP Bond, for etched enamel) differed significantly between the adhesives after 24 hours. After one year, MTBS values were reduced significantly within the same adhesive for both substrates (analysis of variance, Bonferroni post hoc, p<0.05), and no significant differences were found among the adhesives for etched enamel. Silver particles could be detected within the adhesive/dentin interface of all specimens tested. Kruskal-Wallis mean ranks for nanoleakage in ABU, SBU, and CSEB were 16.9, 18.5 and 11, respectively (p>0.05). CONCLUSIONS In the short term, MTBS values were material and dental-substrate dependent. After aging, a decrease in bonding effectiveness was observed in all materials, with nanoleakage at the adhesive/dentin interface. The bonding of the UAs was equal or inferior to that of the conventional restorative systems when applied to either substrate and after either storage period.
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