1
|
Bian C, Guo Y, Zhu M, Liu M, Xie X, Weir MD, Oates TW, Masri R, Xu HHK, Zhang K, Bai Y, Zhang N. New generation of orthodontic devices and materials with bioactive capacities to improve enamel demineralization. J Dent 2024; 142:104844. [PMID: 38253119 DOI: 10.1016/j.jdent.2024.104844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/14/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
OBJECTIVE The article reviewed novel orthodontic devices and materials with bioactive capacities in recent years and elaborated on their properties, aiming to provide guidance and reference for future scientific research and clinical applications. DATA, SOURCES AND STUDY SELECTION Researches on remineralization, protein repellent, antimicrobial activity and multifunctional novel bioactive orthodontic devices and materials were included. The search of articles was carried out in Web of Science, PubMed, Medline and Scopus. CONCLUSIONS The new generation of orthodontic devices and materials with bioactive capacities has broad application prospects. However, most of the current studies are limited to in vitro studies and cannot explore the true effects of various bioactive devices and materials applied in oral environments. More research, especially in vivo researches, is needed to assist in clinical application. CLINICAL SIGNIFICANCE Enamel demineralization (ED) is a common complication in orthodontic treatments. Prolonged ED can lead to dental caries, impacting both the aesthetics and health of teeth. It is of great significance to develop antibacterial orthodontic devices and materials that can inhibit bacterial accumulation and prevent ED. However, materials with only preventive effect may fall short of addressing actual needs. Hence, the development of novel bioactive orthodontic materials with remineralizing abilities is imperative. The article reviewed the recent advancements in bioactive orthodontic devices and materials, offering guidance and serving as a reference for future scientific research and clinical applications.
Collapse
Affiliation(s)
- Ce Bian
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Yiman Guo
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Mengyao Zhu
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Miao Liu
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Xianju Xie
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Michael D Weir
- Department of Biomaterials and Regenerative Dental Medicine, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Thomas W Oates
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD 21201, USA
| | - Radi Masri
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD 21201, USA
| | - Hockin H K Xu
- Department of Biomaterials and Regenerative Dental Medicine, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Ke Zhang
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Yuxing Bai
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Ning Zhang
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, 100050, China.
| |
Collapse
|
2
|
Karabay F, Demirci M, Tuncer S, Tekçe N, Berkman M. A bibliometric and Altmetric analysis of the 100 top most cited articles on dentin adhesives. Clin Oral Investig 2024; 28:92. [PMID: 38217685 PMCID: PMC10787682 DOI: 10.1007/s00784-024-05498-5] [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: 11/06/2023] [Accepted: 01/07/2024] [Indexed: 01/15/2024]
Abstract
OBJECTIVE This study aimed to identify the 100 top-cited articles on dentin adhesives utilizing comprehensive bibliometric and altmetric analyses. MATERIALS AND METHODS The Institute of Scientific Information Web of Knowledge database was used to compile the top-cited articles published from 1945 through February 12, 2023. Citation counts were manually retrieved for each article from Scopus, Google Scholar, Dimensions, and Altmetric. The articles were analyzed in terms of their number of citations, year, journal name, author (name, institution, and country), and type and specific field of study. We used descriptive statistics to summarize the results. RESULTS The analysis revealed that the top 100 cited articles originated from 18 English-language journals and collectively accumulated a remarkable 34526 citations. The article with the highest number of citations garnered 1288 references. Among authors, Van Meerbeek B. stood out with nine articles and 4650 citations, followed by Pashley D.H. with six articles and 2769 citations. Japan was the leading contributor by country, while the Catholic University of Leuven led in terms of institutions with 20 articles. CONCLUSION According to this study, basic research and review articles garnered the most citations, respectively. The citation analysis revealed different trends for researchers, the first being that researchers have focused on basic fields such as the ultramorphology of dentin and adhesive interfaces, followed by bond strength to dentin. Two studies on clinical experiences suggested that studies with high-level evidence, such as systematic reviews, meta-analyses, or randomized controlled clinical trials, are required. CLINICAL RELEVANCE It is identified that more studies with high-level evidence-based research are needed in the field of dental adhesives.
Collapse
Affiliation(s)
- Ferda Karabay
- Deparment of Restorative Dentistry, Faculty of Dentistry, Istanbul Medeniyet University, Istanbul, Turkey.
| | - Mustafa Demirci
- Deparment of Restorative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Safa Tuncer
- Deparment of Restorative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Neslihan Tekçe
- Deparment of Restorative Dentistry, Faculty of Dentistry, Kocaeli University, Kocaeli, Turkey
| | - Meriç Berkman
- Deparment of Restorative Dentistry, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey
| |
Collapse
|
3
|
Orabi Kassab Bashi MA, Bshara N, Alzoubi H. Evaluation of Self-Adhesive Composite Restorations Bond on Primary Canines: An In Vitro Study. Cureus 2023; 15:e35005. [PMID: 36938186 PMCID: PMC10020875 DOI: 10.7759/cureus.35005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2023] [Indexed: 02/17/2023] Open
Abstract
Background and purpose The aesthetic requirements for the restoration of the primary anterior teeth of both the child and his parents increased recently, especially with the presence of materials with good mechanical properties capable of giving a good aesthetic shape. However, the challenge remains in the possibility of applying these materials to primary teeth, where the child's cooperation and ability to keep their mouth open during the completion of the restoration is an important challenge for the dentist. Therefore, this study aimed to evaluate the bonding of self-adhesive composite by studying the microleakage in primary canines. Materials and methods The studied sample consisted of 60 extracted primary canines that were divided into three equal groups (n=20) according to the type of restoration: group 1 (experimental) - self-adhesive composite alone, group 2 (experimental) - self-adhesive composite with selective enamel etching, and group 3 (control) - conventional composite with the self-etching bond and selective enamel etching. A Class V cavity was prepared at the cementoenamel junction, 2 mm deep and 1 mm in diameter. In this way, the gingival wall is dentine, while the incisal wall is enamel-dentine. Restorations were placed according to the group to which the tooth belongs. After that, all teeth were subjected to 500 cycles of thermocycling. Then, a methylene blue dye microleakage test was performed, and longitudinal sections of the teeth were made and studied under x20 magnification using a stereo microscope. Results In the gingival wall, the scores of microleakage in the conventional composite group after selective etching were lower than those of the self-adhesive composite groups, with a statistically significant difference. While in the incisal wall, there were no statistically significant differences in the frequencies of the scores of microleakage between the three groups. Conclusions Within the limitations of this study, the conventional composite bonded better to enamel and dentine than self-adhesive composite resin applied alone or after selective enamel etching. The bonding of the self-adhesive composite was lower than that of the conventional composite, and it is not recommended to use it in Class V restorations of primary anterior teeth.
Collapse
Affiliation(s)
| | - Nada Bshara
- Department of Pediatric Dentistry, Damascus University, Damascus, SYR
| | - Hasan Alzoubi
- Department of Pediatric Dentistry, Damascus University, Damascus, SYR
| |
Collapse
|
4
|
Inglês M, Vasconcelos e Cruz J, Mano Azul A, Polido M, Delgado AHS. Comparative Assessment of Different Pre-Treatment Bonding Strategies to Improve the Adhesion of Self-Adhesive Composites to Dentin. Polymers (Basel) 2022; 14:3945. [PMID: 36235894 PMCID: PMC9570807 DOI: 10.3390/polym14193945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/14/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022] Open
Abstract
The aim of this study is to compare the adhesive interface formed in dentin, using self-adhesive composites applied with different bonding strategies, by testing the microtensile bond strength (μTBS) and ultramorphology through the use of light microscopy. Permanent, sound human molars were randomly allocated to six experimental groups. The groups included a negative control group, where only etching was performed via EtchOnly; a positive control group where an adhesive was applied, OptiBondFL (OBFL); and an experimental group where a primer was applied using a co-curing strategy together with a composite (Primer_CoCuring). The samples were sectioned into microspecimens for μTBS (n = 8) and into 1-mm thick slabs for light microscopy using Masson’s trichrome staining protocol (n = 3). The statistical analysis included a two-way ANOVA for μTBS data and Tukey’s HSD was used as a post-hoc test (significance level of 5%; SPSS v. 26.0). The results of the μTBS revealed that the self-adhesive composite (F = 6.0, p < 0.018) and the bonding strategy (F = 444.1, p < 0.001) significantly affected the bond strength to dentin. However, their interactions were not significant (F = 1.2, p = 0.29). Etching dentin with no additional treatment revealed the lowest μTBS (VF_EtchOnly = 2.4 ± 0.8 MPa; CC_EtchOnly = 2.0 ± 0.4 MPa), which was significantly different from using a primer (VF_CoCu = 8.8 ± 0.8 MPa; CC_CoCu = 6.3 ± 1.0 MPa) or using the full adhesive (VF_OptiBondFL = 22.4 ± 0.3 MPa; CC_OptibondFL = 21.2 ± 0.4 MPa). Microscopy images revealed that the experimental Primer_CoCuring was the only group with no collagen fibers exposed to the dentin−composite interface. Overall, the use of a primer, within the limitations of this study, increased the bonding of the self-adhesive composite and provided sufficient infiltration of the collagen based on light-microscopic imaging.
Collapse
Affiliation(s)
- Magali Inglês
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
| | - Joana Vasconcelos e Cruz
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Monte de Caparica, 2829-511 Almada, Portugal
| | - Ana Mano Azul
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Monte de Caparica, 2829-511 Almada, Portugal
| | - Mário Polido
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Monte de Caparica, 2829-511 Almada, Portugal
| | - António H. S. Delgado
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Monte de Caparica, 2829-511 Almada, Portugal
- Division of Biomaterials & Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, Hampstead, London NW3 2PF, UK
| |
Collapse
|
5
|
H S Delgado A, Belmar Da Costa M, Polido MC, Mano Azul A, Sauro S. Collagen-depletion strategies in dentin as alternatives to the hybrid layer concept and their effect on bond strength: a systematic review. Sci Rep 2022; 12:13028. [PMID: 35906302 PMCID: PMC9338246 DOI: 10.1038/s41598-022-17371-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 07/25/2022] [Indexed: 01/01/2023] Open
Abstract
Strategies aiming to improve the longevity of resin-dentin adhesive interface developed so far have only been able to retard the problem. Different approaches are thus needed. The objective of this review was to determine whether the use of collagen-depletion strategies after acid-etching procedures may improve the bond strength of resin-based materials to dentin. A systematic review was planned following 2021 PRISMA statement guidelines, with a search strategy performed in five electronic databases: PubMed/Medline, Scopus, EMBASE, SciELO and IADR Abstract Archive (last search: 17/01/2022). Inclusion criteria encompassed studies which evaluated a collagen-depletion strategy in acid-etched human dentin and tensile/shear bond strength tests. Risk of bias assessment was carried out by two reviewers, working independently on an adapted five-domain risk of bias (RoB) checklist for laboratory studies. Results were synthesized qualitatively, as a meta-analysis was not possible due to limited number of studies and their RoB. A total of eight studies were eligible for inclusion in the systematic review after inclusion/exclusion criteria application. Out of these, two evaluated the effect of using NaOCl followed by an antioxidant, and the remaining six evaluated different enzymatic treatments (bromelain, chondroitinase ABC, papain, and trypsin). None of the studies reported a decrease of bond strength when a collagen-depletion strategy was used, in comparison to traditional hybrid layers (control). All enzymatic treatment studies which respected the inclusion criteria improved the bond strength to dentin. Some specific collagen-depletion strategies seem to play a favorable role in improving immediate bond strengths to dentin. Further research with sound methodology is required to consolidate these findings, since limitations in RoB and a low number of studies were found. The assessment of further proteolytic agents and long-term outcomes is also required.
Collapse
Affiliation(s)
- António H S Delgado
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz (IUEM), Campus Universitário, Quinta da Granja, Monte de Caparica, 2829-511, Almada, Portugal. .,Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, UK.
| | - Madalena Belmar Da Costa
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz (IUEM), Campus Universitário, Quinta da Granja, Monte de Caparica, 2829-511, Almada, Portugal
| | - Mário Cruz Polido
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz (IUEM), Campus Universitário, Quinta da Granja, Monte de Caparica, 2829-511, Almada, Portugal
| | - Ana Mano Azul
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz (IUEM), Campus Universitário, Quinta da Granja, Monte de Caparica, 2829-511, Almada, Portugal
| | - Salvatore Sauro
- Dental Biomaterials and Minimally Invasive Dentistry, Department of Dentistry, Cardenal Herrera-CEU University, CEU Universities, Valencia, Spain
| |
Collapse
|
6
|
Thalacker C. Dental adhesion with resin composites: a review and clinical tips for best practice. Br Dent J 2022; 232:615-619. [PMID: 35562453 DOI: 10.1038/s41415-022-4144-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/10/2022] [Indexed: 11/09/2022]
Abstract
Modern restorative dentistry would not be possible without the ability to bond to tooth structure. The development of dental adhesives has a lengthy gestation, from the beginnings around 1950, to the latest generation: modern universal adhesives, which were introduced during the 2010s. The foundation for these developments was a deeper understanding of the mechanisms of adhesion to the tooth structure, and to restoration materials. Typically, the performance of an adhesive does not depend on the use of a single ingredient, but on an overall balanced and optimised formulation that contains various components with different roles, such as functional adhesive monomers.While a wealth of literature exists on adhesives that have a long and successful clinical history ('gold standards'), some universal adhesives have also accumulated a lot of scientific evidence while offering benefits like ease of use, low technique sensitivity and versatility.To achieve reliable results with a modern adhesive, several tips should be kept in mind regardless of the product, which result in a homogeneous adhesive layer, proper cure and ultimately high bond strength. Although high performance is already achieved with the adhesives currently available, this is still an exciting area of ongoing research.
Collapse
Affiliation(s)
- Christoph Thalacker
- Oral Care Solutions Division, 3M Company, ESPE Platz, Seefeld, 82229, Germany.
| |
Collapse
|
7
|
Sato T, Takagaki T, Hatayama T, Nikaido T, Tagami J. Update on Enamel Bonding Strategies. FRONTIERS IN DENTAL MEDICINE 2021. [DOI: 10.3389/fdmed.2021.666379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Optimal strategies for the application of an adhesive differ between enamel and dentin because of the differences in their composition. The development of adhesive systems has mainly focused on the bonding of dentin, rather than on the enamel, by etching with phosphoric acid (PA). Dental adhesive technologies continue to rapidly advance, and various adhesive systems have been developed since the study of Buonocore in 1955. He introduced the enamel acid-etch technique. Then, the etch-and-rinse (ER) system was developed, and subsequently, the self-etch (SE) system. Universal adhesives are a new generation of one-bottle SE adhesives that can be applied with either ER mode or SE mode, or a combined system involving selective enamel etching mode. Since the combination of PA etching and the SE system differs from conventional ER systems, the enamel bonding strategy should be carefully considered. This concise review of the literature on reliable enamel bonding strategies should prove helpful to clinicians to choose an appropriate adhesive system to achieve optimal clinical outcomes.
Collapse
|
8
|
Sato T, Nikaido T, Takagaki T, Baba Y, Vicheva M, Sato A, Tagami J. Influence of primer contamination on the bonding interface of enamel pre-etched with phosphoric acid. Dent Mater J 2021; 40:1086-1093. [PMID: 33883354 DOI: 10.4012/dmj.2020-367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this study, the influence of primer contamination on enamel bonding was analyzed. Adper Scotchbond Multi-Purpose (SMP), CLEARFIL SE Bond 2 (SE2), Scotchbond Universal (SBU) Adhesive, and Scotchbond Etchant (35% phosphoric acid; PA) were used. Ground bovine enamels were divided into eight groups based on the bonding protocols. The bonding interfaces after an acid-base challenge were observed via scanning electron microscopy to determine the acid-base resistant zone (ABRZ). Moreover, the bonding interfaces after the nanoleakage challenge were analyzed via energy-dispersive X-ray spectroscopy. ABRZ was observed in all the samples except PA_ONLY (applied PA etching, No primer and No adhesive resin). The funnel-shaped erosion was detected only in X_SBU (applied SBU without PA etching). The nanoleakage test revealed silver patterns in some groups. The nanoleakage, i.e., the penetration of the silver ions, was detected in the groups wherein primer was applied on PA-pre-etched enamel.
Collapse
Affiliation(s)
- Takaaki Sato
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Toru Nikaido
- Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, Asahi University School of Dentistry
| | - Tomohiro Takagaki
- Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, Asahi University School of Dentistry
| | - Yuta Baba
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Martina Vicheva
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Ayaka Sato
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| |
Collapse
|
9
|
Gomes de Carvalho AB, de Andrade GS, Mendes Tribst JP, Grassi EDA, Ausiello P, Saavedra GDSFA, Bressane A, Marques de Melo R, Borges ALS. Mechanical Behavior of Different Restorative Materials and Onlay Preparation Designs in Endodontically Treated Molars. MATERIALS 2021; 14:ma14081923. [PMID: 33921347 PMCID: PMC8070423 DOI: 10.3390/ma14081923] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 11/24/2022]
Abstract
This study evaluated the effect of the combination of three different onlay preparation designs and two restorative materials on the stress distribution, using 3D-finite element analysis. Six models of first lower molars were created according to three preparation designs: non-retentive (nRET), traditional with occlusal isthmus reduction (IST), and traditional without occlusal isthmus reduction (wIST); and according to two restorative materials: lithium-disilicate (LD) and nanoceramic resin (NR). A 600 N axial load was applied at the central fossa. All solids were considered isotropic, homogeneous, and linearly elastic. A static linear analysis was performed, and the Maximum Principal Stress (MPS) criteria were used to evaluate the results and compare the stress in MPa on the restoration, cement layer, and tooth structure (enamel and dentin). A novel statistical approach was used for quantitative analysis of the finite element analysis results. On restoration and cement layer, nRET showed a more homogeneous stress distribution, while the highest stress peaks were calculated for LD onlays (restoration: 69–110; cement layer: 10.2–13.3). On the tooth structure, the material had more influence, with better results for LD (27–38). It can be concluded that nRET design showed the best mechanical behavior compared to IST and wIST, with LD being more advantageous for tooth structure and NR for the restoration and cement layer.
Collapse
Affiliation(s)
- Ana Beatriz Gomes de Carvalho
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, Brazil; (A.B.G.d.C.); (G.S.d.A.); (E.D.A.G.); (G.d.S.F.A.S.); (R.M.d.M.); (A.L.S.B.)
| | - Guilherme Schmitt de Andrade
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, Brazil; (A.B.G.d.C.); (G.S.d.A.); (E.D.A.G.); (G.d.S.F.A.S.); (R.M.d.M.); (A.L.S.B.)
| | - João Paulo Mendes Tribst
- Graduate Program in Dentistry, Department Dentistry, University of Taubate (UNITAU), Taubate 12020-270, Brazil;
| | - Elisa Donária Aboucauch Grassi
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, Brazil; (A.B.G.d.C.); (G.S.d.A.); (E.D.A.G.); (G.d.S.F.A.S.); (R.M.d.M.); (A.L.S.B.)
| | - Pietro Ausiello
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Dentistry, University of Naples Federico II, 80138 Naples, Italy
- Correspondence:
| | - Guilherme de Siqueira Ferreira Anzaloni Saavedra
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, Brazil; (A.B.G.d.C.); (G.S.d.A.); (E.D.A.G.); (G.d.S.F.A.S.); (R.M.d.M.); (A.L.S.B.)
| | - Adriano Bressane
- Graduate Oral Health Applied Science, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, Brazil;
| | - Renata Marques de Melo
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, Brazil; (A.B.G.d.C.); (G.S.d.A.); (E.D.A.G.); (G.d.S.F.A.S.); (R.M.d.M.); (A.L.S.B.)
| | - Alexandre Luiz Souto Borges
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos 12245-000, Brazil; (A.B.G.d.C.); (G.S.d.A.); (E.D.A.G.); (G.d.S.F.A.S.); (R.M.d.M.); (A.L.S.B.)
| |
Collapse
|
10
|
Park S, Wang X, Wang B, Xu HHK, Zhang N, Bai Y. The long observation in vitro of prevention effect of novel self-etching orthodontic adhesive modified with 2-methacryloxyethyl phosphorylcholine in enamel demineralization. Dent Mater J 2021; 40:631-640. [PMID: 33518689 DOI: 10.4012/dmj.2019-193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The enamel demineralization is common in fixed orthodontics. Plaque accumulation around the bracket plays a critical role and could cause various degrees of white spot lesions (WSLs) on the surface of teeth. The 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer is a biological polymer with protein repellent and an anti-bacterial adhesion effects. In this study, the enamel shear bond strength (SBS) and protein repellent property in vitro of self-etching orthodontic adhesive with MPC were evaluated. It was found that the self-etching adhesive with 0-7.5%MPC met the orthodontic clinical requirement on the SBS values at three different points of time. The incorporation of 7.5%MPC significantly reduced the bacterial adhesion and total microorganism of the yield biofilm. Moreover, the MTT assay showed that the amount of plaque metabolism in 7.5%MPC was the lowest among the groups. To conclude, the novel protein repellent self-etching adhesive was able to inhibit biofilm formation efficiently and minimize enamel demineralization.
Collapse
Affiliation(s)
- SooRo Park
- Department of Orthodontics, School of Stomatology, Capital Medical University
| | - Xiaomeng Wang
- Department of Orthodontics, School of Stomatology, Capital Medical University.,Department of Stomatology, Children's Hospital of Shanghai
| | - Bo Wang
- Department of Orthodontics, School of Stomatology, Capital Medical University.,Department of Orthodontics, The First Affiliated Hospital of Dalian Medical University
| | - Hockin H K Xu
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland Dental School
| | - Ning Zhang
- Department of Orthodontics, School of Stomatology, Capital Medical University
| | - Yuxing Bai
- Department of Orthodontics, School of Stomatology, Capital Medical University
| |
Collapse
|
11
|
Perdigão J. Current perspectives on dental adhesion: (1) Dentin adhesion - not there yet. JAPANESE DENTAL SCIENCE REVIEW 2020; 56:190-207. [PMID: 34188727 PMCID: PMC8216299 DOI: 10.1016/j.jdsr.2020.08.004] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/24/2020] [Indexed: 12/11/2022] Open
Abstract
The essential goal of any adhesive restoration is to achieve a tight and long-lasting adaptation of the restorative material to enamel and dentin. The key challenge for new dental adhesives is to be simultaneously effective on two dental substrates of conflicting nature. Some barriers must be overcome to accomplish this objective. While bonding to enamel by micromechanical interlocking of resin tags within the array of microporosities in acid-etched enamel can be reliably achieved and can effectively seal the restoration margins against leakage, bonding effectively and durably to organic and humid dentin is the most puzzling task in adhesive dentistry. Much of the research and development of dental adhesives has focused on making the clinical procedure more user-friendly by reducing the number of bottles and/or steps. Although clinicians certainly prefer less complicated and more versatile adhesive materials, there is a trade-off between simplification of dental adhesives and clinical outcomes. Likewise, new materials are launched with claims of being novel and having special properties without much supporting evidence. This review article discusses dental adhesion acknowledging pioneer work in the field, highlights the substrate as a major challenge to obtain durable adhesive restorations, as well as analyzes the three adhesion strategies and their shortcomings. It also reviews the potential of chemical/ionic dental adhesion, discusses the issue of extensively published laboratory research that does not translate to clinical relevance, and leaves a few thoughts in regard to recent research that may have implications for future adhesive materials.
Collapse
Affiliation(s)
- Jorge Perdigão
- Professor, University of Minnesota, Department of Restorative Sciences, 515 SE Delaware St, 8-450 Moos Tower, Minneapolis, MN 55455, USA
| |
Collapse
|
12
|
Abstract
Successful adhesive dentistry begins with correct placement and polymerization of the bonding agent. Although numerous agents exist, all abide by certain key principles, including the newest group, the universal adhesives. Fundamental steps also exist in the application process that require the operator to understand the chemistry of the adhesive being used. Modalities exist that can help preserve the durability of the bond achieved, thus slowing down the degradation process. However, no material or agent can overcome poor technique. Thus, it is of the utmost importance that the practitioner respects the technique sensitivity of adhesives, and follows the manufacturer's instructions.
Collapse
Affiliation(s)
- Marc Hayashi
- UCLA School of Dentistry, 10833 Le Conte Ave, Box 951668, Los Angeles, CA 90095, USA.
| |
Collapse
|
13
|
Sano H, Chowdhury AFMA, Saikaew P, Matsumoto M, Hoshika S, Yamauti M. The microtensile bond strength test: Its historical background and application to bond testing. JAPANESE DENTAL SCIENCE REVIEW 2019; 56:24-31. [PMID: 31827652 PMCID: PMC6888711 DOI: 10.1016/j.jdsr.2019.10.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 10/20/2019] [Indexed: 11/29/2022] Open
Abstract
Microtensile bond strength (μTBS) test was introduced in 1994. Since then, it has been utilized profoundly across many bond strength testing laboratories, making it currently one of the most standard and versatile bond strength test. Although it is a static and strength-based method, together with the morphological and spectroscopic investigations, it has been contributing immensely in the advancement of dentin adhesive systems. μTBS test has a greater discriminative capability than the traditional macro-shear bond test. During the early stage of its development, the authors predicted that this testing method would enable evaluation of the adhesive performances of resins to excavated carious or sclerotic dentin and the regional bond strengths of various portions of the cavity. In addition, they also stated the possibility of comparing the long-term stability of resin adhesion at various portions of the cavity walls on teeth extracted at various times after insertion of bonded restorations. In this review, we discussed the historical background, inception and the application of the μTBS test and proposed directions for further improvement of this testing method.
Collapse
Affiliation(s)
- Hidehiko Sano
- Department of Restorative Dentistry, Faculty of Dentistry, Hokkaido University Graduate School of Dental Medicine, Kita 13, Nishi 7, Kita-ku, Sapporo 060-8586, Japan
| | - Abu Faem Mohammad Almas Chowdhury
- Department of Restorative Dentistry, Faculty of Dentistry, Hokkaido University Graduate School of Dental Medicine, Kita 13, Nishi 7, Kita-ku, Sapporo 060-8586, Japan
| | - Pipop Saikaew
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Mahidol University, 6 Yothi Road, Rajthewee, Bangkok 10400, Thailand
| | - Mariko Matsumoto
- Department of Restorative Dentistry, Faculty of Dentistry, Hokkaido University Graduate School of Dental Medicine, Kita 13, Nishi 7, Kita-ku, Sapporo 060-8586, Japan
| | - Shuhei Hoshika
- Department of Restorative Dentistry, Faculty of Dentistry, Hokkaido University Graduate School of Dental Medicine, Kita 13, Nishi 7, Kita-ku, Sapporo 060-8586, Japan
| | - Monica Yamauti
- Department of Restorative Dentistry, Faculty of Dentistry, Hokkaido University Graduate School of Dental Medicine, Kita 13, Nishi 7, Kita-ku, Sapporo 060-8586, Japan
| |
Collapse
|
14
|
Maurina R, Giacomini C, Tomazoni F, Bellan MC, Alessandretti R, Galafassi D. Comparação da resistência de união ao cisalhamento de dois diferentes sistemas adesivos: estudo in vitro. JOURNAL OF ORAL INVESTIGATIONS 2019. [DOI: 10.18256/2238-510x.2019.v8i1.3065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Objetivos: O presente estudo buscou avaliar a resistência de união ao cisalhamento de dois sistemas adesivos aplicados em diferentes quantidades de camadas em amostras de esmalte e dentina bovina. Métodos: Os fatores estudados foram os sistemas adesivos em dois níveis: Single Bond Universal e Single Bond 2. As amostras experimentais foram compostas por 30 fragmentos de esmalte bovino (n=5) e 30 fragmentos de dentina bovina (n=5) divididos aleatoriamente em 2 grupos experimentais de esmalte e dois grupos de dentina, sendo esses subdivididos em 3 modos de aplicação do sistema adesivo em 1, 2 ou 3 camadas. Resultados: Os adesivos Single Bond 2 e Single Bond Universal, quando aplicados em 1 ou 3 camadas em dentina ou esmalte apresentaram similaridade estatística (p= 0,8726). Já quando comparamos o sistema adesivo Single Bond 2 e Single Bond Universal em substrato dentinário a aplicação de 2 camadas do sistema adesivo implicam em aumento da resistência adesiva estatisticamente significante (p=0,000) para o grupo Single Bond Universal aplicado em dentina. Conclusão: O adesivo Single Bond Universal apresentou melhor resistência adesiva que o adesivo Single Bond 2 quando aplicados em duas camadas em substrato dentina. Para o substrato esmalte, ambos os sistemas adesivos são efetivos independente do número de camadas aplicadas.
Collapse
|
15
|
GADONSKI AP, MARAN BM, DE ANDRADE GS, NAUFEL FS, SCHMITT VL. Avaliação do efeito de soluções de armazenamento sobre a resistência da união adesiva à dentina de dentes bovinos sob microcisalhamento – pesquisa in vitro. REVISTA DE ODONTOLOGIA DA UNESP 2018. [DOI: 10.1590/1807-2577.08318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Resumo Introdução Com a dificuldade de obtenção de dentes humanos para estudos in vitro, autores relatam e preconizam o uso de dentes extraídos de arcadas bovinas para testar técnicas de diferentes segmentos da Odontologia. Entretanto, para que as pesquisas tenham eficácia científica, estes dentes necessitam tratamento adequado para manter suas características e simular condições in vivo. Objetivo Analisar a resistência de união (RU) adesiva à dentina em dentes bovinos restaurados com adesivo convencional Adper® Single Bond 2 (3M ESPE, St. Paul, MN, EUA) e compósito Opallis Flow (Dentscare LTDA., Joinville, SC, BRA), tendo como fatores de estudo solução e tempo de armazenamento. Metodologia As amostras foram congeladas sob armazenamento em 2 soluções: timol 0,1% e cloramina 0,5%, em 4 diferentes períodos: 1 semana, 1 mês, 3 meses e 6 meses. Foram obtidos 8 grupos experimentais (n=64) e 1 grupo controle (n=8), totalizando 9 grupos. Após o período de restauração, os dentes foram armazenados em estufa a 37 ºC, imersos em água destilada e, em seguida, testados em máquina de ensaios universal (EMIC DL 500, São José dos Pinhais, PR, Brasil), com análise estatística dos resultados. Resultado A comparação entre os grupos experimentais e controle mostrou diferença estatisticamente significante (p<0,05) para o armazenamento das amostras em timol durante o período de 1 mês. Conclusão Os fatores solução e tempo foram capazes de alterar a resistência de união adesiva à dentina bovina, observando-se que a maior média de RU foi obtida após o armazenamento na solução timol durante 1 mês (p=0,004).
Collapse
|
16
|
dos Santos A, André CB, Martim GC, Schuquel ITA, Pfeifer CS, Ferracane JL, Tominaga TT, Khalil NM, Radovanovic E, Girotto EM. Methacrylate saccharide-based monomers for dental adhesive systems. INTERNATIONAL JOURNAL OF ADHESION & ADHESIVES 2018; 87:1-11. [PMID: 31130758 PMCID: PMC6533006 DOI: 10.1016/j.ijadhadh.2018.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The aim of this in vitro study was to synthesize three new methacrylate monomers based on the modification of saccharides structures (glucose-Gluc, sucrose-Sucr and chitosan-Chit) with glycidyl methacrylate, and to use them in the composition of dental adhesives. Three methacrylate saccharide monomers were synthesized and characterized by mid-IR, 1H and 13C NMR, antioxidant activity and cytotoxic effect. Monomers included: one monosaccharide - Gluc-MA; one disaccharide - Sucr-MA; and one polysaccharide - Chit-MA. Primers containing HEMA, methacrylate saccharide monomers at concentrations of 0 (control), 1, 2 or 4 wt%, 60 wt% ethanol aqueous solution (pH3.0) and initiator system were formulated. Primers were used in conjunction with a bond step and composite paste to restore caries-free third molars, and dentin bond strength (24 hours and 6 month of storage in water), and antimicrobial activity (Alamar Blue test) were tested. Degree of conversion (DC) and maximum rate of polymerization (Rpmax) of the primers themselves were also analyzed. The mid-IR, 1H and 13C spectrum confirmed the presence of vinyl group on the structure of saccharides. Chit-MA showed low antioxidant activity and did not present a cytotoxic effect. Gluc-MA and Sucr-MA possess antioxidant and cytotoxic activity, concentration dependent. In the presence of methacrylate saccharide monomers, the primers showed DC comparable to the control group, except Gluc-MA4%, Sucr-MA4% and Chit-MA1%, which showed a range of 64.6 from 58.5 %DC. Rpmax was not statistically different for all the groups (p = 0.01). The bond strength of Sucr-MA1% increased from 25.7 (±2.8) to 40.6 (±5.3) MPa after 6 months of storage. All the synthesized monomers showed some antimicrobial activity after polymerization. Gluc-MA and Chit-MA 4% and Sucr-MA 1, 2 and 4% led to decrease bacterial metabolism. Sucr-MA 1% showed better results regarding the decrease in bacterial metabolism and increasing the bond strength after 6 months of storage.
Collapse
Affiliation(s)
- Andressa dos Santos
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
- Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, 2730 SW Moody Avenue, Portland, OR, United State of America
| | - Carolina B. André
- Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Limeira Avenue, 901, Piracicaba, SP, Brazil
| | - Gedalias C. Martim
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
| | - Ivania T. A. Schuquel
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
| | - Carmem S. Pfeifer
- Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, 2730 SW Moody Avenue, Portland, OR, United State of America
| | - Jack L. Ferracane
- Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, 2730 SW Moody Avenue, Portland, OR, United State of America
| | - Tania T. Tominaga
- Department of Physics, State University of the Midwest, Simeao Camargo Varela de Sá Street, 03, Guarapuava, PR, Brazil
| | - Najeh M. Khalil
- Department of Pharmacy, State University of the Midwest, Simeao Camargo Varela de Sá Street, 03, Guarapuava, PR, Brazil
| | - Eduardo Radovanovic
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
| | - Emerson M. Girotto
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
| |
Collapse
|
17
|
Luong E, Shayegan A. Assessment of microleakage of class V restored by resin composite and resin-modified glass ionomer and pit and fissure resin-based sealants following Er:YAG laser conditioning and acid etching: in vitro study. Clin Cosmet Investig Dent 2018; 10:83-92. [PMID: 29881311 PMCID: PMC5985794 DOI: 10.2147/ccide.s153989] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Aim The aim of this study was to make a comparison between microleakage of conventionally restored class V cavities using acid etchant and the ones conditioned by erbium-doped yttrium aluminum garnet (Er:YAG) laser, and also to assess and compare the effectiveness of enamel surface treatments of occlusal pits and fissures by acid etching and conditioned by Er:YAG laser-etch. Materials and methods Seventy-two extracted third molars were used in this study. The samples were divided into two major groups: class V cavities and pit and fissure sealants. Each subgroup was divided into conventional acid etching, Er:YAG laser conditioning and conventional acid etching, and combination with Er:YAG laser conditioning (n=12). The teeth were placed in 2% methylene blue dye solution, were sectioned, and were evaluated according to the dye penetration criteria. Two samples per subgroup were chosen for scanning electron microscopic (SEM) analysis. Results There was a significant difference between occlusal and cervical margin groups. Laser conventional composite cementum group showed more microleakage values compared to other groups. There was no significant difference between occlusal margin groups. However, there was a significant difference between cervical margin groups in terms of microleakage. In sealant groups, there was a significant difference between laser and conventional with/without laser treatment groups in terms of microleakage. Conclusion Based on the results reported in this study, it can be concluded that the application of the Er:YAG laser beneath the resin composite, the resin-modified glass ionomers (GIs), and the fissure sealant placement may be an alternative enamel and dentin etching method to acid etching.
Collapse
Affiliation(s)
- Emilie Luong
- Department of Children and Adult Operative Dentistry, César de Paepe Hospital, Free University of Brussels, Bruxelles, Belgium
| | - Amir Shayegan
- Department of Children and Adult Operative Dentistry, Children's Hospital of Queen Fabiola, Free University of Brussels, Bruxelles, Belgium
| |
Collapse
|
18
|
Huang XQ, Pucci CR, Luo T, Breschi L, Pashley DH, Niu LN, Tay FR. No-waiting dentine self-etch concept-Merit or hype. J Dent 2017; 62:54-63. [PMID: 28506642 DOI: 10.1016/j.jdent.2017.05.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 05/10/2017] [Accepted: 05/11/2017] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVE A recently-launched universal adhesive, G-Premio Bond, provides clinicians with the alternative to use the self-etch technique for bonding to dentine without waiting for the adhesive to interact with the bonding substrate (no-waiting self-etch; Japanese brochure), or after leaving the adhesive undisturbed for 10s (10-s self-etch; international brochure). The present study was performed to examine in vitro performance of this new universal adhesive bonded to human coronal dentine using the two alternative self-etch modes. METHODS One hundred and ten specimens were bonded using two self-etch application modes and examined with or without thermomechanical cycling (10,000 thermal cycles and 240,000 mechanical cycles) to simulate one year of intraoral functioning. The bonded specimens were sectioned for microtensile bond testing, ultrastructural and nanoleakage examination using transmission electron microscopy. Changes in the composition of mineralised dentine after adhesive application were examined using Fourier transform infrared spectroscopy. RESULTS Both reduced application time and thermomechanical cycling resulted in significantly lower bond strengths, thinner hybrid layers, and significantly more extensive nanoleakage after thermomechanical cycling. Using the conventional 10-s application time improved bonding performance when compared with the no-waiting self-etch technique. Nevertheless, nanoleakage was generally extensive under all testing parameters employed for examining the adhesive. CONCLUSION Although sufficient bond strength to dentine may be achieved using the present universal adhesive in the no-waiting self-etch mode that does not require clinicians to wait prior to polymerisation of the adhesive, this self-etch concept requires further technological refinement before it can be recommended as a clinical technique. CLINICAL SIGNIFICANCE Although the surge for cutting application time to increase user friendliness remains the most frequently sought conduit for advancement of dentine bonding technology, the use of the present universal adhesive in the no-waiting self-etch mode may not represent the best use of the adhesive.
Collapse
Affiliation(s)
- Xue-Qing Huang
- Department of Prosthodontics, Guanghua School and Hospital of Stomatology & Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, PR China
| | - César R Pucci
- Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University UNESP São Jose dos Campos, São Paulo, Brazil
| | - Tao Luo
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, Guangdong, PR China
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna - Alma Mater Studiorum, Bologna, Italy
| | - David H Pashley
- College of Graduate Studies, Augusta University, Augusta, GA, USA
| | - Li-Na Niu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China.
| | - Franklin R Tay
- College of Graduate Studies, Augusta University, Augusta, GA, USA.
| |
Collapse
|
19
|
Amelogenesis imperfecta: review of diagnostic findings and treatment concepts. Odontology 2016; 104:245-56. [DOI: 10.1007/s10266-016-0266-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 07/25/2016] [Indexed: 10/21/2022]
|
20
|
Influence of Nd:YAG laser on intrapulpal temperature and bond strength of human dentin under simulated pulpal pressure. Lasers Med Sci 2015; 31:49-56. [DOI: 10.1007/s10103-015-1827-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 10/19/2015] [Indexed: 11/26/2022]
|
21
|
Mallick R, Sarangi P, Mohanty S, Behera S, Nanda S, Satapathy SK. Micro-tensile bond strength of different adhesive systems on sound dentin and resin-based composite: An in-vitro study. J Conserv Dent 2015; 18:379-83. [PMID: 26430301 PMCID: PMC4578182 DOI: 10.4103/0972-0707.164036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Aim: To analyze the difference in the micro-tensile bond strength of specimens made with two different adhesive systems and compare them with two homogenous substrates. Materials and Methods: Sixty permanent mandibular molars were mounted in acrylic blocks and sectioned with exposed dentin surfaces. Samples were then divided into four groups. To Group-I Adper Single Bond 2 and to Group-II Adper Self-Etch plus bonding agents were applied. For Group-I and Group-II beams consisted of resin composite in the upper half and dentin in the lower half. In Group-III beams were made of only dentin. In Group-IV beams were made of only composite. Fifteen specimens of each group were taken for the micro-tensile bond strength test. Statistical Analysis: The results are analyzed using one-way analysis of variance and Critical Difference test. Results: The interface bonded with the two adhesive systems had lower micro-tensile bond strength than those of dentin and resin composite and the self-etching adhesive Adper Self-Etch plus had comparable bond strength with total-etch adhesive Adper Single Bond 2. Conclusion: The bond strength values for current adhesive systems cannot be compared to the micro-tensile bond strength of dentin and resin composite, and self-etching adhesives have comparable bond strength with total-etch adhesives.
Collapse
Affiliation(s)
- Rashmirekha Mallick
- Department of Conservative Dentistry and Endodontics, SCB Dental College and Hospital, Cuttack, Odisha, India
| | - Priyanka Sarangi
- Department of Conservative Dentistry and Endodontics, SCB Dental College and Hospital, Cuttack, Odisha, India
| | - Sandhyarani Mohanty
- Department of Conservative Dentistry and Endodontics, SCB Dental College and Hospital, Cuttack, Odisha, India
| | - Subasish Behera
- Department of Conservative Dentistry and Endodontics, SCB Dental College and Hospital, Cuttack, Odisha, India
| | - Soumyaranjan Nanda
- Department of Conservative Dentistry and Endodontics, SCB Dental College and Hospital, Cuttack, Odisha, India
| | | |
Collapse
|
22
|
Review of the dental implications of X-linked hypophosphataemic rickets (XLHR). Clin Oral Investig 2015; 19:759-68. [PMID: 25677243 DOI: 10.1007/s00784-015-1425-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 02/02/2015] [Indexed: 12/17/2022]
Abstract
OBJECTIVES The aim of this article was to review the dental implications of X-linked hypophosphataemic rickets (XLHR) and to provide suggestions regarding the dental treatment of these patients. MATERIALS AND METHODS The following search items "x-linked hypophosphataemia, hypophosphataemic rickets, vitamin D-resistant rickets" were used for literature search. Only full-text articles were analysed and summarized to get an overview of the different treatments and outcomes of hypophosphataemic patients. RESULTS Radiographically, very large pulp chambers with an abnormally high pulp volume/tooth volume ratio, suggesting taurodontism, are often evident. The affected teeth are characterised by a thin enamel layer and dentinal defects. The gender distribution of hypophosphataemic patients is almost equal, but postpubertary males seem to show a trend to develop more severe dental symptoms of the disease. Abscesses without any signs of dental caries or trauma are frequent findings. The most often affected teeth are incisors followed by molars and premolars. CONCLUSIONS Treatment options include frequent dental examination, application of topical fluoride varnish and sealing of pits and fissures to prevent microbial invasion that may result in pulpitis and further endodontic complications. CLINICAL RELEVANCE X-linked hypophosphataemic rickets is associated with marked structural alterations of dental hard tissues and the development of multiple abscesses and sinus tracts of dental origin. Therefore, profound knowledge of the various dental implications of XLHR is required to provide these patients with the best possible treatment options.
Collapse
|
23
|
Derbanne M, Le Goff S, Attal JP. Dental Adhesives. Biomaterials 2014. [DOI: 10.1002/9781119043553.ch10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
24
|
|
25
|
Harun NA, Santini A, Roebuck EM. The effect of interincisal opening, cavity location and operator experience on the energy delivered by a light-curing unit to a simulated dental restoration. Prim Dent J 2014; 3:26-31. [PMID: 25215337 DOI: 10.1308/205016814812144030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Curing of resin-based composites depends on the delivery of adequate total energy, which may be operator dependent. Aim To determine the effect of interincisal opening, cavity location and operator experience on the total energy delivered to simulated cavity preparation sites. DESIGN Three cohorts were included: junior dental nurses, senior dental nurses and qualified dentists (N=5, each cohort). Each operator (participant) followed the same procedure and light-cured two simulated restorations in a MARC patient simulator using a Demi light-curing unit for 20 seconds in each of the following situations: left upper second molar (UL7), interincisal opening at both 25 mm and 45 mm; upper central incisor (UR1), interincisal opening at 45mm. The light energy delivered by each operator in each situation was recorded. Five readings for each operator were taken at each interincisal distance. Statistical comparisons of delivered energy (J/cm2) between interincisal openings, location and groups in the total energy delivered were performed using the Kruskal-Wallis nonparametric test: alpha = 0.05. RESULTS Less total energy was delivered to the posterior cavity at 25mm (12.0 +/- 5.3 J/cm2) than at 45mm (16.9 +/- 5.6 J/cm2) by all operators (P < 0.05). At 45 mm, less total energy was delivered to the posterior cavity compared to the anterior cavity (25.1 +/- 7.4 J/cm2; P < 0.05). There was no statistically significant difference between junior nurses and qualified dentists (P > 0.05) but there was a significant difference in the total energy delivered between senior nurses (20.1 +/- 7.8 J/cm2) and junior nurses (17.5 +/- 7.6 J/cm2) and between senior nurses and qualified dentists (16.6 +/- 8.7 J/cm2) (P < 0.05). CONCLUSIONS Interincisal mouth opening, location of the cavity and operator experience affected the total energy delivered to cavities in a simulated clinical environment.
Collapse
|
26
|
Rocha Gomes Torres C, Barcellos DC, Batista GR, Pucci CR, Antunes MJS, de La Cruz DB, Borges AB. Five-year clinical performance of the dentine deproteinization technique in non-carious cervical lesions. J Dent 2014; 42:816-23. [PMID: 24739486 DOI: 10.1016/j.jdent.2014.04.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 04/03/2014] [Accepted: 04/05/2014] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the 5-year clinical performance of composite restorations of non-carious cervical lesions (NCCL) using a total-etch adhesive system with or without collagen removal with 10% sodium hypochlorite (NaOCl). METHODS In this study randomized controlled split-mouth clinical trial, one-hundred and thirty-eight NCCL were restored into 30 patients. Each patient received at least one pair of composite restorations (Filtek A110/3M ESPE), bonded either with 2 techniques: Conventional Technique--acid etching with 37% phosphoric acid+Prime & Bond NT (Denstply DeTrey); Deproteinization Technique--acid etching with 37% phosphoric acid+10% NaOCl for 1min+Prime & Bond NT. The two techniques were evaluated using the United States Public Health Service (USPHS) criteria at baseline, 18 months, 3 and 5 years. After five years, one-hundred and six restorations were evaluated in 24 patients. Data were analyzed using the Chi-Square test (p<0.05). RESULTS There were no statistically significant differences between the two techniques regarding the evaluated parameters (p>0.05). CONCLUSION After 5 years, the application of 10% NaOCl deproteinization on etched dentine did not affect the clinical performance of composite restorations placed in NCCL when compared to the conventional total-etch technique. CLINICAL SIGNIFICANCE Clinical studies evaluating the performance of the Deproteinization Technique are scarce. In this study, this technique showed similar clinical performance at the end of 5 years when compared to a conventional total-etch technique.
Collapse
Affiliation(s)
- Carlos Rocha Gomes Torres
- Department of Restorative Dentistry, Institute of Science and technology, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil.
| | - Daphne Camara Barcellos
- Institute of Science and Technology, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil.
| | - Graziela Ribeiro Batista
- Institute of Science and Technology, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil
| | - César Rogério Pucci
- Department of Restorative Dentistry, Institute of Science and technology, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil
| | - Maria Julia Sala Antunes
- Clinical Research Academic Group (GAPEC) Institute of Science and Technology, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil
| | - Daniela Barone de La Cruz
- Clinical Research Academic Group (GAPEC) Institute of Science and Technology, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil
| | - Alessandra Bühler Borges
- Department of Restorative Dentistry, Institute of Science and technology, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil
| |
Collapse
|
27
|
Malekipour MR, Razavi SM, Khazaei S, Kazemi S, Behnamanesh M, Shirani F. Histologic evaluation of human pulp response to total etch and self etch adhesive systems. IRANIAN RED CRESCENT MEDICAL JOURNAL 2013; 15:428-31. [PMID: 24349733 PMCID: PMC3838655 DOI: 10.5812/ircmj.3335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Revised: 08/26/2012] [Accepted: 01/17/2013] [Indexed: 11/16/2022]
Abstract
Background To investigate pulp response to the application of two types adhesive systems (total-etch and self-etch) in human premolar teeth. Materials and Methods Cavities limited to enamel walls in all margins with 2.5 mm depth were prepared on buccal surfaces of thirty three human premolars. The cavities were treated with the following adhesive. Single Bond (SB) and Prompt L-Pop (PLP). The teeth were extracted after 30 days and prepared due to histological technique. Results Pulp responses were evaluated in three field including inflammatory cell response, pulp tissue disorganization and restorative dentin formation. There were no differences in histological response of the pulp tissue (P > 0.05). Conclusion Both adhesive systems showed good biological compatibility.
Collapse
Affiliation(s)
- Mohammad Reza Malekipour
- Department of Operative Dentistry, Faculty of Dentistry, Azad University, Khorasgan (Isfahan Branch), IR Iran
| | - Sayed Mohammad Razavi
- Torabinejad Dental Research Center and Department of Oral and maxillofacial Pathology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, IR Iran
| | - Saber Khazaei
- Dental Students’ Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, IR Iran
| | - Shantia Kazemi
- Dental Students’ Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, IR Iran
| | - Maryam Behnamanesh
- Faculty of Dentistry, Azad University, Khorasgan (Isfahan Branch), IR Iran
| | - Farzaneh Shirani
- Dental Materials Research Center and Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, IR Iran
- Corresponding author: Farzaneh Shirani, Dental Materials Research Center and Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Hezar jerib St, Postcode: 8174673461, Isfahan, IR Iran, Tel: +98-3117922825, Fax: +98-116687080, E-mail:
| |
Collapse
|
28
|
Present and future of glass-ionomers and calcium-silicate cements as bioactive materials in dentistry: biophotonics-based interfacial analyses in health and disease. Dent Mater 2013; 30:50-61. [PMID: 24113131 PMCID: PMC3885799 DOI: 10.1016/j.dental.2013.08.202] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 08/05/2013] [Accepted: 08/05/2013] [Indexed: 01/06/2023]
Abstract
Objective Since their introduction, calcium silicate cements have primarily found use as endodontic sealers, due to long setting times. While similar in chemistry, recent variations such as constituent proportions, purities and manufacturing processes mandate a critical understanding of service behavior differences of the new coronal restorative material variants. Of particular relevance to minimally invasive philosophies is the potential for ion supply, from initial hydration to mature set in dental cements. They may be capable of supporting repair and remineralization of dentin left after decay and cavity preparation, following the concepts of ion exchange from glass ionomers. Methods This paper reviews the underlying chemistry and interactions of glass ionomer and calcium silicate cements, with dental tissues, concentrating on dentin–restoration interface reactions. We additionally demonstrate a new optical technique, based around high resolution deep tissue, two-photon fluorescence and lifetime imaging, which allows monitoring of undisturbed cement–dentin interface samples behavior over time. Results The local bioactivity of the calcium-silicate based materials has been shown to produce mineralization within the subjacent dentin substrate, extending deep within the tissues. This suggests that the local ion-rich alkaline environment may be more favorable to mineral repair and re-construction, compared with the acidic environs of comparable glass ionomer based materials. Significance The advantages of this potential re-mineralization phenomenon for minimally invasive management of carious dentin are self-evident. There is a clear need to improve the bioactivity of restorative dental materials and these calcium silicate cement systems offer exciting possibilities in realizing this goal.
Collapse
|
29
|
A comparative study of bonded and non-bonded amalgam restorations in general dental practice. Br Dent J 2013; 214:E19. [PMID: 23579163 DOI: 10.1038/sj.bdj.2013.328] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2012] [Indexed: 11/08/2022]
Abstract
OBJECTIVE This study compared the performance of non-bonded and bonded amalgam restorations in a general dental practice. MATERIALS AND METHODS A retrospective cohort study was carried out in a general dental practice of amalgam restorations, placed by a single operator. Non-bonded amalgam restorations were analysed over a ten-year period and bonded amalgam restorations over a five-year period. Survival analysis using the Kaplan-Maier method was carried out and an analysis of postoperative sensitivity and reasons for failure. RESULTS Each group consisted of 231 restorations in 135 patients. Survival rates of non-bonded amalgam restorations were 72.2% over five years and 51.0% over ten years. The survival rate for bonded amalgam restorations was 85.0% over five years. The difference was significant (p <0.0001, 95% CI 1.510-3.226). Analysis of postoperative sensitivity and reasons for failure were inconclusive. CONCLUSION Within the limitations of the study, bonded amalgam restorations demonstrated greater longevity over non-bonded amalgam restorations and offer significant benefit to patients. Clinicians may feel confident to offer bonded amalgam restorations for their patients as a better alternative than non-bonded amalgam restorations.
Collapse
|
30
|
Ali AM, Hamouda IM, Ghazy MH, Abo-Madina MM. Immediate and delayed micro-tensile bond strength of different luting resin cements to different regional dentin. J Biomed Res 2013; 27:151-8. [PMID: 23554806 PMCID: PMC3602873 DOI: 10.7555/jbr.27.20120028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Revised: 05/22/2012] [Accepted: 07/30/2012] [Indexed: 11/24/2022] Open
Abstract
We sought to evaluate immediate and delayed micro-tensile bond strength of Panavia F2.0 and Multilink Sprint resin cement to superficial, deep and cervical dentin. Thirty-six freshly extracted non-carious human molars were sectioned in the mesiodistal direction to expose three different dentin regions including superficial dentin (1 mm below the dentine-enamel junction), deep dentin (1 mm above the highest pulp horn) and cervical dentin (0.5 mm above the cemento-enamel junction and 0.5 mm below the dentine-enamel junction). Resin cements were applied on dentin surfaces and composite blocks were luted under constant seating pressure. Each group was divided into three subgroups according to time intervals. Specimens were sectioned to obtain sticks of 1 mm2 in diameter and subjected to microtensile bond strength testing at a cross head speed of 1 mm/min. Both resin cements showed higher micro-tensile bond strength to superficial dentin than that to deep or cervical dentin (P < 0.001). Micro-tensile bond strengths of Panavia F2.0 were higher than those of Multilink Sprint at different dentin regions (P < 0.001). Immediate micro-tensile bond strengths were higher than those of delayed micro-tensile bond strengths for both resin cements (P < 0.001). It was concluded that resin cements with different chemical formulations and applications yield significantly different micro-tensile bond strengths to different dentin regions.
Collapse
Affiliation(s)
- Abdelraheem Mohamed Ali
- Department of Conservative Dentistry, Faculty of Dentistry, Mansoura University, Mansoura, Dakahleya 35516, Egypt
| | | | | | | |
Collapse
|
31
|
Guarda GB, Correr AB, Gonçalves LS, Costa AR, Borges GA, Sinhoreti MAC, Correr-Sobrinho L. Effects of Surface Treatments, Thermocycling, and Cyclic Loading on the Bond Strength of a Resin Cement Bonded to a Lithium Disilicate Glass Ceramic. Oper Dent 2013; 38:208-17. [DOI: 10.2341/11-076-l] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Objectives
The aim of this present study was to investigate the effect of two surface treatments, fatigue and thermocycling, on the microtensile bond strength of a newly introduced lithium disilicate glass ceramic (IPS e.max Press, Ivoclar Vivadent) and a dual-cured resin cement.
Methods
A total of 18 ceramic blocks (10 mm long × 7 mm wide × 3.0 mm thick) were fabricated and divided into six groups (n=3): groups 1, 2, and 3—air particle abraded for five seconds with 50-μm aluminum oxide particles; groups 4, 5, and 6—acid etched with 10% hydrofluoric acid for 20 seconds. A silane coupling agent was applied onto all specimens and allowed to dry for five seconds, and the ceramic blocks were bonded to a block of composite Tetric N-Ceram (Ivoclar Vivadent) with RelyX ARC (3M ESPE) resin cement and placed under a 500-g static load for two minutes. The cement excess was removed with a disposable microbrush, and four periods of light activation for 40 seconds each were performed at right angles using an LED curing unit (UltraLume LED 5, Ultradent) with a final 40 second light exposure from the top surface. All of the specimens were stored in distilled water at 37°C for 24 hours. Groups 2 and 5 were submitted to 3,000 thermal cycles between 5°C and 55°C, and groups 3 and 6 were submitted to a fatigue test of 100,000 cycles at 2 Hz. Specimens were sectioned perpendicular to the bonding area to obtain beams with a cross-sectional area of 1 mm2 (30 beams per group) and submitted to a microtensile bond strength test in a testing machine (EZ Test) at a crosshead speed of 0.5 mm/min. Data were submitted to analysis of variance and Tukey post hoc test (p≤0.05).
Results
The microtensile bond strength values (MPa) were 26.9 ± 6.9, 22.2 ± 7.8, and 21.2 ± 9.1 for groups 1–3 and 35.0 ± 9.6, 24.3 ± 8.9, and 23.9 ± 6.3 for groups 4–6. For the control group, fatigue testing and thermocycling produced a predominance of adhesive failures. Fatigue and thermocycling significantly decreased the microtensile bond strength for both ceramic surface treatments when compared with the control groups. Etching with 10% hydrofluoric acid significantly increased the microtensile bond strength for the control group.
Collapse
Affiliation(s)
- GB Guarda
- Guilherme Bottene Guarda, DDS, MDS, PhD student, Department of Restorative Dentistry, Dental Materials Division, Piracicaba Dental School, State University of Campinas – UNICAMP, Piracicaba, SP, Brazil
| | - AB Correr
- Américo Bortolazzo Correr, DDS, MDS, PhD, professor
| | - LS Gonçalves
- Luciano Sousa Gonçalves, MDS, DDS, PhD, professor
| | - AR Costa
- Ana Rosa Costa, DDS, MDS, PhD student
| | - GA Borges
- Gilberto Antonio Borges, DDS, MDS, PhD, professor
| | - MAC Sinhoreti
- Mário Alexandre C Sinhoreti, DDS, MDS, PhD, professor
| | | |
Collapse
|
32
|
da Silva MA, Di Nicolo R, Barcellos DC, Batista GR, Pucci CR, Rocha Gomes Torres C, Borges AB. Influence of CVD diamond tips and Er:YAG laser irradiation on bonding of different adhesive systems to dentin. J Contemp Dent Pract 2013; 14:14-20. [PMID: 23579886 DOI: 10.5005/jp-journals-10024-1262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM The aim of this study was to compare the microtensile bond strength of three adhesive systems, using different methods of dentin preparation. MATERIALS AND METHODS A hundred and eight bovine teeth were used. The dentin from buccal face was exposed and prepared with three different methods, divided in 3 groups: Group 1 (DT)- diamond tip on a high-speed handpiece; Group 2 (CVD)-CVD tip on a ultrasonic handpiece; Group 3 (LA)-Er: YAG laser. The teeth were divided into 3 subgroups, according adhesive systems used: Subgroup 1-Adper Single Bond Plus/3M ESPE (SB) total-etch adhesive; Subgroup 2-Adper Scotchbond SE/3M ESPE (AS) selfetching adhesive; Subgroup 3-Clearfil SE Bond/Kuraray (CS) selfetching adhesive. Blocks of composite (Filtek Z250-3M ESPE) 4 mm high were built up and specimens were stored in deionized water for 24 hours at 37°C. Serial mesiodistal and buccolingual cuts were made and stick-like specimens were obtained, with transversal section of 1.0 mm(2). The samples were submitted to microtensile test at 1 mm/min and load of 10 kg in a universal testing machine. Data (MPa) were subjected to ANOVA and Tukey's tests (p < 0.05). RESULTS AND CONCLUSION Surface treatment with Diamond or CVD tips associated with Clearfil SE Bond adhesive produced significantly lower bond strength values compared to other groups. Surface treatment with Er: YAG laser associated with Single Bond Plus or Clearfil SE Bond adhesives and surface treatment with CVD tip associated with Adper Scotchbond SE adhesive produced significantly lower bond strength values compared to surface treatment with diamond or CVD tips associated with Single Bond Plus or Adper Scotchbond SE adhesives. CLINICAL SIGNIFICANCE Interactions between laser and the CVD tip technologies and the different adhesive systems can produce a satisfactory bonding strength result, so that these associations may be beneficial and enhance the clinical outcomes.
Collapse
Affiliation(s)
- Melissa Aline da Silva
- Department of Restorative Dentistry, Clinical Research Academic Group, Sao Jose dos Campos School of Dentistry, Sao Paulo State University, UNESP, Brazil
| | | | | | | | | | | | | |
Collapse
|
33
|
Kwon TY, Bagheri R, Kim YK, Kim KH, Burrow MF. Cure mechanisms in materials for use in esthetic dentistry. ACTA ACUST UNITED AC 2012; 3:3-16. [PMID: 22298515 DOI: 10.1111/j.2041-1626.2012.00114.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Tae-Yub Kwon
- Department of Dental Biomaterials, Kyungpook National University, Jung-gu, Daegu, Korea
| | | | | | | | | |
Collapse
|
34
|
Chou JC, Ding SJ, Chen CC. Dentin surface modification using the Er,Cr:YSGG laser and a meshwork mask: light and SEM microscopic observations. Photomed Laser Surg 2011; 29:433-5. [PMID: 21214364 DOI: 10.1089/pho.2010.2881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE We have developed a novel technique of utilizing a stainless steel meshwork mask during treatment of dentin with the Er,Cr:YSGG laser. It is the purpose of this study to observe the surface modifications produced by this method. BACKGROUND DATA Many techniques have been developed to facilitate bonding of various materials to dentin. However, an optimal bond has not yet been achieved. METHODS Four teeth ground to dentin were randomly assigned to two groups. Group 1: Er,Cr:YSGG laser treatment; and Group 2: laser treatment while a 100 μm aperture stainless steel mesh was situated over the dentinal surface. RESULTS Group 1 samples appeared rugged but relatively flat. Group 2 samples presented a surface with uniformly aligned craters ∼100 μm wide, 150 μm deep. CONCLUSIONS Masking the dentinal surface with a stainless steel mesh during laser irradiation produces a surface texture that appears to facilitate mechanical retention.
Collapse
Affiliation(s)
- Jang-Ching Chou
- Department of Prosthodontics, Marquette University, Milwaukee, Wisconsin, USA
| | | | | |
Collapse
|
35
|
AOKI K, KITASAKO Y, ICHINOSE S, BURROW MF, ARIYOSHI M, NIKAIDO T, TAGAMI J. Ten-year observation of dentin bonding durability of 4-META/MMA-TBB resin cement —a SEM and TEM study. Dent Mater J 2011; 30:438-47. [DOI: 10.4012/dmj.2011-003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
36
|
Nasu Y, Itoh K, Tani C, Hisamitsu H. Diffusion of GM primer and dentin adhesive into EDTA-conditioned dentin. Dent Mater J 2010; 29:609-14. [PMID: 20859060 DOI: 10.4012/dmj.2009-084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to investigate the diffusion of red-stained experimental GM primer and blue-stained dentin bonding agent into EDTA-conditioned dentin and the effect of GM priming on contraction gap formation. After GM priming at 0, 35, 70, or 100 vol%, marginal adaptation was evaluated by measuring the wall-to-wall contraction gap width of a light-activated resin composite (Palfique Estelite, Tokuyama Dental, Japan) mediated with a commercial dentin bonding agent (Clearfil Photo Bond, Kuraray Medical, Japan). Contraction gap formation was completely prevented when treated with 35 vol% GM primer. Moreover, after treatment with 35 vol% GM, the red and blue dyes of stained GM primer and dentin bonding agent diffused up to a depth of 40 µm into the dentin surface. The diffusion of primer and bonding agent into EDTA-conditioned dentin was essential for bonding efficacy although SEM observation revealed an absence of hybrid layer formation.
Collapse
Affiliation(s)
- Yuya Nasu
- Department of Clinical Cariology, Showa University, School of Dentistry, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan.
| | | | | | | |
Collapse
|
37
|
Wiltshire WA, Noble J. Clinical and Laboratory Perspectives of Improved Orthodontic Bonding to Normal, Hypoplastic, and Fluorosed Enamel. Semin Orthod 2010. [DOI: 10.1053/j.sodo.2009.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
38
|
Duarte PDBPG, da Silva EM. Nanoleakage phenomenon on deproteinized human dentin. J Appl Oral Sci 2009; 15:285-91. [PMID: 19089146 PMCID: PMC4327431 DOI: 10.1590/s1678-77572007000400009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2006] [Accepted: 04/04/2007] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE The purpose of this study was to evaluate the influence of dentin deproteinization on the nanoleakage phenomenon. MATERIAL AND METHODS Class V cavities were prepared in 12 human molars with cervical margins located in dentin. The cavities were assigned to 2 groups (n=6) according to dentin treatment: Group I - dentin treated in accordance with the manufacturer's instructions and Group II - dentin treated following the manufacturer's instructions + 10% NaOCl. Each group was sub-divided into three groups, according to the DBS (dentin bonding system) used: Scotchbond Multi Purpose (SBMP), Prime & Bond NT (PB) and Clearfil SE Bond (SE), which were applied according to manufacturer's instructions. The cavities were restored with composite resin, and the specimens were immersed in a tracer agent (AgNO3 50%) for 24 h. The teeth were sectioned buccolingually through the center of the restorations, and nanoleakage pattern was evaluated by scanning electron microscopy (SEM) using the backscattered electron image mode. RESULTS SEM analysis showed different nanoleakage patterns for each DBS. Irrespective of dentin treatments, all SBMP specimens showed nanoleakage. SE did not show any nanoleakage with both dentin treatments used. PB showed nanoleakage within the hybrid layer only in Group I. CONCLUSIONS The influence of dentin deproteinization on the nanoleakage phenomenon was dependent on dentin bonding system formulation and bonding strategies.
Collapse
|
39
|
SILVA SANTANA SORAIAVELOSO, BOMBANA ANTONIOCARLOS, FLÃRIO FLÃMARTÃ, BASTING ROBERTATARKANY. Effect of Surface Sealants on Marginal Microleakage in Class V Resin Composite Restorations. J ESTHET RESTOR DENT 2009; 21:397-404. [DOI: 10.1111/j.1708-8240.2009.00297.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
40
|
Guo X, Peng Z, Spencer P, Wang Y. Effect of initiator on photopolymerization of acidic, aqueous dental model adhesives. J Biomed Mater Res A 2009; 90:1120-7. [PMID: 18671261 DOI: 10.1002/jbm.a.32185] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This study evaluated different initiator systems in self-etching model adhesives, in which camphorquinone (CQ) or [3-(3,4-dimethyl-9-oxo-9H-thioxanthen-2-yloxy)-2-hydroxylpropy] trimethylammonium chloride (QTX) was employed as a photoinitiator (dye). N-phenylglycine (NPG), ethyl 4-dimethylaminobenzoate (4E) or 2-(dimethylamino) ethyl methacrylate (DMAEMA) was used as the coinitiator (CI). The role of diphenyliodonium hexafluorophosphate (DPIHP) in the polymerization process was also studied. The concentrations of dye, CI, and DPIHP in model adhesives were all maintained at 0.022 mmol per gram monomer. The model adhesive contained two monomers: (bis[2-(methacryloyloxy)ethyl] phosphate) (2MP) and 2-hydroxyethyl methacrylate (HEMA) whose mass ratio was 1:1, thus representing an acidic and hydrophilic formulation. The polymerization rate and the degree of conversion (DC) of the model adhesives with 5, 15, or 25% water content were determined using FTIR/ATR with a time-based spectrum analysis. The results indicated that with CQ as the photoinitiator, 4E appeared to be the most efficient CI, whereas the CQ-DMAEMA combination led to very low radical generation efficiency (DC < 5%). DPIHP exhibited little effect on the polymerization process. With QTX as the photoinitiator, however, DPIHP played an essential role. Without DPIHP, all three QTX-CI systems failed to initiate polymerization (DC < 5%). The QTX-DPIHP combination, on the other hand, was found to be a viable initiator system. The above results provide the critical information for the development of self-etching adhesive systems.
Collapse
Affiliation(s)
- Xinglin Guo
- Department of Oral Biology, University of Missouri-Kansas City School of Dentistry, Kansas City, Missouri 64108, USA
| | | | | | | |
Collapse
|
41
|
Kıvanç BH, Alaçam T, Ulusoy ÖİA, Genç Ö, Görgül G. Fracture resistance of thin-walled roots restored with different post systems. Int Endod J 2009; 42:997-1003. [DOI: 10.1111/j.1365-2591.2009.01609.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
42
|
Torres SMP, Borges GA, Spohr AM, Cury AADB, Yadav S, Platt JA. The Effect of Surface Treatments on the Micro-shear Bond Strength of a Resin Luting Agent and Four All-ceramic Systems. Oper Dent 2009; 34:399-407. [DOI: 10.2341/08-87] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Clinical Relevance
The bond strength between ceramics and a resin luting agent is affected by the ceramic surface treatment, which is dependent on the ceramic composition.
Collapse
|
43
|
Yamazaki PC, Bedran-Russo AKB, Pereira PN. The effect of load cycling on nanoleakage of deproteinized resin/dentin interfaces as a function of time. Dent Mater 2008; 24:867-73. [DOI: 10.1016/j.dental.2007.11.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2006] [Revised: 10/12/2007] [Accepted: 11/04/2007] [Indexed: 10/22/2022]
|
44
|
Spohr AM, Borges GA, Júnior LHB, Mota EG, Oshima HMS. Surface Modification of In-Ceram Zirconia Ceramic by Nd:YAG Laser, Rocatec System, or Aluminum Oxide Sandblasting and Its Bond Strength to a Resin Cement. Photomed Laser Surg 2008; 26:203-8. [DOI: 10.1089/pho.2007.2130] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Ana Maria Spohr
- Department of Dental Materials, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre
| | | | | | - Eduardo Gonçalves Mota
- Department of Operative Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Hugo Mitsuo Silva Oshima
- Department of Dental Materials, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre
| |
Collapse
|
45
|
Zeuner F, Moszner N, Völkel T, Vogel K, Rheinberger V. Synthesis and Dental Aspects of Acrylic Phosphoric and Phosphonic Acids. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426509908546200] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- F. Zeuner
- a Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- b Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- c Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- d Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- e Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
| | - N. Moszner
- a Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- b Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- c Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- d Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- e Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
| | - T. Völkel
- a Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- b Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- c Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- d Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- e Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
| | - K. Vogel
- a Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- b Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- c Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- d Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- e Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
| | - V. Rheinberger
- a Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- b Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- c Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- d Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
- e Ivoclar AG, Research & Development , FL-9494 Schaan/Liechtenstein
| |
Collapse
|
46
|
Sadek FT, Pashley DH, Nishitani Y, Carrilho MR, Donnelly A, Ferrari M, Tay FR. Application of hydrophobic resin adhesives to acid-etched dentin with an alternative wet bonding technique. J Biomed Mater Res A 2008; 84:19-29. [PMID: 17600324 DOI: 10.1002/jbm.a.31290] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Hydrophilic dentin adhesives are prone to water sorption that adversely affects the durability of resin-dentin bonds. This study examined the feasibility of bonding to dentin with hydrophobic resins via the adaptation of electron microscopy tissue processing techniques. Hydrophobic primers were prepared by diluting 2,2-bis[4(2-hydroxy-3-methacryloyloxy-propyloxy)-phenyl] pro- pane/triethyleneglycol dimethacrylate resins with known ethanol concentrations. They were applied to acid-etched moist dentin using an ethanol wet bonding technique that involved: (1) stepwise replacement of water with a series of increasing ethanol concentrations to prevent the demineralized collagen matrix from collapsing; (2) stepwise replacement of the ethanol with different concentrations of hydrophobic primers and subsequently with neat hydrophobic resin. Using the ethanol wet bonding technique, the experimental primer versions with 40, 50, and 75% resin exhibited tensile strengths which were not significantly different from commercially available hydrophilic three-step adhesives that were bonded with water wet bonding technique. The concept of ethanol wet bonding may be explained in terms of solubility parameter theory. This technique is sensitive to water contamination, as depicted by the lower tensile strength results from partial dehydration protocols. The technique has to be further improved by incorporating elements of dentin permeability reduction to avoid water from dentinal tubules contaminating water-free resin blends during bonding.
Collapse
Affiliation(s)
- Fernanda T Sadek
- Department of Dental Materials, School of Dentistry, University of Siena, Siena, Italy
| | | | | | | | | | | | | |
Collapse
|
47
|
NAKABAYASHI N. Evolution of Dental Treatment More Reliable with Impermeable IPN Formed in Prepared Dentin. KOBUNSHI RONBUNSHU 2008. [DOI: 10.1295/koron.65.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
48
|
Guo X, Wang Y, Spencer P, Ye Q, Yao X. Effects of water content and initiator composition on photopolymerization of a model BisGMA/HEMA resin. Dent Mater 2007; 24:824-31. [PMID: 18045679 DOI: 10.1016/j.dental.2007.10.003] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2007] [Revised: 10/05/2007] [Accepted: 10/07/2007] [Indexed: 11/18/2022]
Abstract
AIMS The purpose of this study was to evaluate the effects of photoinitiator type and water content on the polymerization rate (Rp) and degree of conversion (DC) of a model BisGMA/HEMA-based resin. MATERIALS AND METHODS The comonomer mixture consisted of BisGMA/HEMA (60/40 by weight). Different two- or three-component photoinitiator systems were incorporated. Two-component systems were 0.5% CQ (camphorquinone) and 0.5% DMAEMA (2-(dimethylamino) ethyl methacrylate) or 0.5% CQ and 0.5% 4E (ethyl 4-dimethylaminobenzoate). The three-component systems were added 1% DPIHP (diphenyliodonium hexafluorophosphate) to the above systems. Each system was tested as made, or after addition of 5, 10, 15wt% water. When cured under a conventional dental light, the Rp and DC of each formulation was determined using time-resolved attenuated total reflection (ATR)-Fourier transform infrared (FTIR) spectroscopy. RESULTS For mixtures containing two-component initiator systems, when the hydrophobic initiator CQ was used in combination with hydrophilic DMAEMA, Rps and DCs were dramatically decreased as a function of water content. The Rps and DCs of the hydrophobic CQ/4E system were higher than those of the CQ/DMAEMA system in the presence of water. For three-component initiator systems, incorporation of DPIHP enhanced the polymerization of all mixtures in the presence of water compared to their counterpart two-component initiators. Interestingly, the CQ/DMAEMA caused greater DC and Rp when DPIHP was used. SIGNIFICANCE The hydrophobicity/hydrophilicity of photoinitiator components significantly affects both the DC as well as Rp when in the presence of water. The results indicate that formulation of photoinitiator components should be based on the effectiveness of the bonding systems under both dry and wet conditions.
Collapse
Affiliation(s)
- Xinglin Guo
- Department of Oral Biology, University of Missouri-Kansas City, School of Dentistry, 650 E. 25th Street, Kansas City, MO 64108, USA
| | | | | | | | | |
Collapse
|
49
|
Borges GA, de Goes MF, Platt JA, Moore K, de Menezes FH, Vedovato E. Extrusion shear strength between an alumina-based ceramic and three different cements. J Prosthet Dent 2007; 98:208-15. [PMID: 17854622 DOI: 10.1016/s0022-3913(07)60057-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
STATEMENT OF PROBLEM Surface treatment is an essential step in bonding a ceramic to resin. Alumina ceramics are particularly difficult to prepare for adequate bonding to composite resin cements. PURPOSE The purpose of this study was to evaluate the bond strength between a densely sintered alumina ceramic and bovine dentin with 2 adhesive resin cements and a resin-modified glass ionomer cement using an extrusion shear strength test. MATERIAL AND METHODS Alumina cones (n=30), 4 mm in height, 3 mm in diameter at the small end, and with an 8-degree taper, were fabricated. Without any treatment, the cones were cemented in a standardized cavity in 2.5-mm-thick bovine dentin discs using 1 of 3 cement systems: Panavia F, RelyX ARC, or RelyX Luting. The cements were manipulated following the manufacturers' instructions. After 24 hours of storage at 37 degrees C, an extrusion shear test was performed in a universal testing machine at 0.5 mm/min until bonding failure. The data were analyzed using 1-way ANOVA and Tukey HSD test (alpha=.05). All fractured specimens were examined at x25 magnification and classified by fracture mode. Representative specimens were selected for SEM observation. RESULTS The highest strength values were obtained with Panavia F, and they were significantly higher (P<.05) than each of the other 2 cements, which were not significantly different from each other. Panavia F resulted in predominantly mixed failure and RelyX ARC and RelyX Vitremer showed primarily adhesive failure. CONCLUSIONS An MDP-containing adhesive system (Panavia F) provides better extrusion bond strength to a high-density alumina ceramic than a Bis-GMA resin luting agent system (RelyX ARC) or a resin-modified glass ionomer cement system (RelyX Luting).
Collapse
|
50
|
Nayyar S, Tewari S, Arora B. Comparison of human pulp response to total-etch and self-etch bonding agents. ACTA ACUST UNITED AC 2007; 104:e45-52. [PMID: 17560135 DOI: 10.1016/j.tripleo.2007.02.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2006] [Revised: 01/31/2007] [Accepted: 02/12/2007] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To compare the pulp reactions in terms of pulp inflammation, leakage involving bacteria and reactionary dentin formation to total-etch adhesive, Prime & Bond NT and self-etch adhesive, Xeno III in 2 mm deep class V cavities prepared in human teeth. STUDY DESIGN 2 mm deep class V cavities were prepared on buccal surface of 40 human premolars. The teeth were randomly divided into two groups based on the application of a total-etch adhesive system, Prime and Bond NT after acid etching or a self-etching adhesive system, Xeno III. The teeth were extracted after 7 and 30 days and prepared according to routine histological techniques. RESULTS All teeth were asymptomatic. Both the adhesives showed moderate to severe inflammatory reactions in few cases initially at seven days, but the response was generally minimal at 30 days. Leakage involving bacteria was detected in 42.5% of restorations and 40% of the specimens were associated with various grades of pulp inflammation. The cavity remaining dentin thickness influenced the grade of inflammatory activity. A significant correlation was detected between inflammatory cell response and the presence of bacteria. Pulp response to self-etching adhesive, Xeno III was minimally different from that of the total-etch adhesive, Prime & Bond NT (p < .05). CONCLUSIONS A self-etching adhesive system, Xeno III showed similar pulp response and leakage involving bacteria to a total-etch adhesive, Prime & Bond NT. Both adhesives showed an acceptable biological compatibility with human pulps at 30 days.
Collapse
Affiliation(s)
- Seema Nayyar
- Department of Operative Dentistry and Endodontics, Government Dental College, PGIMS, Rohtak, Haryana, India
| | | | | |
Collapse
|