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Al-Chalabi AS, Taher R, Chakmakchi M. The Effect of Desensitizing Agent on Shear Bond Strength to Dentin using Three Self-etching Bonding Systems at Different Time Intervals. An In Vitro Study. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.9542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Objectives: To investigate the shear bond strength of dentin surfaces using different self-etching bonding systems after treating with a desensitizing agent at different time intervals.
Materials and methods: 63 sound upper premolars were used, the occlusal aspect was sectioned at the middle in a vertical direction into buccal and palatal halves. Each specimen was mounted and a flat dentin surface was prepared at the middle third of each specimen. The sectioned samples were divided into 3 groups according to the bonding agent n=42. One-half of each tooth was treated with desensitizing agent Quadrant FiniSense then both halves were bonded with one of the three self-etching bonding systems (G-Premio bonding, i Bond, Clearfil S3 bound plus). After adhesive procedures, a composite resin was applied against the tooth to form a cylinder (2mm×4mm) and cured. From each group 14 specimens were stored in distilled water at 37° C for 24 hours, 7 days, and 72 days. At the end of each interval, the samples were tested for the shear bond strength using a universal testing machine (Instron). Data were analyzed using the Independent t-test and One Way ANOVA Test and Duncan’s Multiple Range Test.
Results: All bonding systems showed lower bonding strength when samples were treated with desensitizer with a significant difference at all time intervals except for the i bond group which showed no significant difference in bond strength at a period of 7 and 72 days in treated and without desensitizer treated samples.
Conclusion: Obliteration of dentinal by dentin desensitizer may have a negative effect on the bonding strength of the self-etching bonding systems.
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The effect of fluoride iontophoresis on seal ability of self-etch adhesive in human dentin in vitro. BMC Oral Health 2022; 22:109. [PMID: 35366856 PMCID: PMC8976950 DOI: 10.1186/s12903-022-02146-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 03/25/2022] [Indexed: 11/22/2022] Open
Abstract
Background Fluoride iontophoresis (FI) is a non-invasive method for the transfer of fluoride ions under electrical pressure into dental hard tissue. This study aimed to determine the effect of FI on the seal ability of self-etch adhesive in human dentin using dentin permeability test and scanning electron microscopy (SEM). Methods The experiments were divided into 2 series: series 1 was performed on 28 extracted intact third molars and series 2 was performed on 28 extracted carious third molars (ICDAS 4 and 5). In each series, 20 teeth were used for dentin permeability test and 8 teeth were used for SEM study. For dentin permeability test, the specimens were divided into dentin without FI (control) and dentin with FI (experimental) subgroups. Hydraulic conductance (HD) of dentin was measured before and after adhesive treatment, and calculated for the percentage decrease of HD in each subgroup. Two-way ANOVA and Tukey test were used for statistical analysis. SEM study was used to assess the seal ability of self-etch adhesive and penetration of fluoride ions into dentinal tubules. Results HD after self-etch adhesive treatment reduced by 57.75 ± 17.99% in intact dentin with FI, 46.60 ± 17.03% in intact dentin without FI, 45.00 ± 15.30% in caries affected dentin without FI, and 37.28 ± 14.72% in caries affected dentin with FI. There was no significant difference in percentage decrease of HD between dentin without FI and dentin with FI (P = 0.742); meanwhile, intact dentin with FI had significant greater percentage decrease than caries affected dentin with FI (P < 0.05). SEM findings showed FI produced more particle formation and deeper precipitation in intact dentin than those in caries affected dentin. Conclusions FI did not affect the seal ability of self-etch adhesive in human dentin when compared to without FI. However, FI could augment the seal ability of the self-etch adhesive in intact dentin better than that in caries affected dentin. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-022-02146-w.
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Abuzinadah SH, Alhaddad AJ. A randomized clinical trial of dentin hypersensitivity reduction over one month after a single topical application of comparable materials. Sci Rep 2021; 11:6793. [PMID: 33762645 PMCID: PMC7991651 DOI: 10.1038/s41598-021-86258-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 03/12/2021] [Indexed: 11/21/2022] Open
Abstract
Dentinal hypersensitivity (DH) is a condition that causes patient discomfort. To evaluate the clinical efficacy of Gluma, fluoride varnish and Tetric N-Bond self-etch system in relieving DH immediately and over 30 days following a single topical application. The present randomized clinical trial was conducted on 55 patients with an age range 20–49 years. 70 teeth in total were incorporated and randomly assigned to the three groups. Parameters examined were: Tactile, air blast, and cold stimuli. VAS was used to assess tactile stimulus whereas the Schiff Cold Scale for air blast and cold stimuli. DH was evaluated immediately, at two weeks and 1 month follow up. Gluma showed a statistically significant reduction in DH scores over other materials. It was concluded that Gluma have statistically significant results over other materials in relieving DH immediately and over 30 days following a single topical application. Trial Registration: Clinical Trials.gov Identifier: NCT04351412, King Abdulaziz University Protocol Record 129-09-19. Registered 17 April 2020 – Retrospectively registered. http://ClinicalTrials.gov/NCT04351412.
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Affiliation(s)
- Samar Hatem Abuzinadah
- Department of Restorative Dentistry, Faculty of Dentistry, King Abdul-Aziz University, Alehtifalat street, Jeddah, 21589, Saudi Arabia.
| | - Abdulrahman Jafar Alhaddad
- Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, King Abdul-Aziz University, Alehtifalat street, Jeddah, 21589, Saudi Arabia
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In Vitro Study on the Effect of a New Bioactive Desensitizer on Dentin Tubule Sealing and Bonding. J Funct Biomater 2020; 11:jfb11020038. [PMID: 32498468 PMCID: PMC7353572 DOI: 10.3390/jfb11020038] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/24/2020] [Accepted: 05/25/2020] [Indexed: 11/16/2022] Open
Abstract
Bioactive mineral-based dentin desensitizers that can quickly and effectively seal dentinal tubules and promote dentin mineralization are desired. This in vitro study evaluated a novel nanohydroxyapatite-based desensitizer, Predicta (PBD, Parkell), and its effect on bond strength of dental adhesives. Human dentin discs (2-mm thick) were subjected to 0.5 M EDTA to remove the smear layer and expose tubules, treated with PBD, and processed for surface and cross-sectional SEM examination before and after immersion in simulated body fluid (SBF) for four weeks (ISO 23317-2014). The effects of two dental desensitizers on the microshear bond strength of a universal adhesive and a two-step self-etch system were compared. SEM showed coverage and penetration of nanoparticles in wide tubules on the PBD-treated dentin at the baseline. After four weeks in SBF, untreated dentin showed amorphous mineral deposits while PBD-treated dentin disclosed a highly mineralized structure integrated with dentin. Desensitizers significantly reduced microshear bond strength test (MSBS) of adhesives by 15-20% on average, depending on the bonding protocol. In conclusion, PBD demonstrated effective immediate tubules sealing capability and promoted mineral crystal growth over dentin and into the tubules during SBF-storage. For bonding to desensitizer-treated dentin, a two-step self-etching adhesive or universal bond with phosphoric acid pretreatment are recommended.
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Nizami M, Nishina Y, Yamamoto T, Shinoda-Ito Y, Takashiba S. Functionalized Graphene Oxide Shields Tooth Dentin from Decalcification. J Dent Res 2019; 99:182-188. [DOI: 10.1177/0022034519894583] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
This in vitro study assessed the efficacy of functionalized graphene oxide (f-GO) nanocomposites on the decalcification of dentin, because dental caries of the root surface is becoming one of the new problems in aged society. Hydroxyapatite plates (HAP) and dentin slices were coated with f-GO nanocomposites by comparing them to silver diamine fluoride as a positive control, then treated with decalcification solutions such as ethylenediaminetetraacetic acid and citrate at 37°C for 24 h. Scanning electron microscopy (SEM) revealed significant protection of the surface morphology of HAP and dentin. On the other hand, a cariogenic Streptococcus mutans growth was inhibited by f-GO nanocomposites. In addition, cytotoxicity of them to epithelial cells was much less than that of povidone-iodine, which is commonly used for oral disinfectant. We synthesized 5 different f-GO nanocomposites such as GO–silver (Ag), GO-Ag–calcium fluoride (CaF2), GO-CaF2, GO-zinc, and GO–tricalcium phosphate (Ca3(PO4)2). They were standardized by evaluating under SEM, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetry analysis (TGA), and Raman spectra after being synthesized in an aseptic technique. The abilities of GO-Ag, GO-Ag-CaF2, and GO-CaF2 nanocomposites were most preventive for decalcification. In addition, GO-Ag and GO-Ag-CaF2 almost completely inhibited S. mutans growth. However, they did not exhibit cytotoxicity to epithelial cells except at the highest concentration (0.1 w/v%) of GO-Ag and GO-Ag-CaF2. Furthermore, these f-GO nanocomposites exhibited less or no discoloration of dentin, although commonly used silver diamine fluoride causes discoloration of dentin to black. Thus, these f-GO nanocomposites are useful to protect dental caries on the tooth root that becomes a social problem in aged society.
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Affiliation(s)
- M.Z.I. Nizami
- Department of Pathophysiology—Periodontal Science, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Kita-ku, Okayama, Japan
- Research Core for Interdisciplinary Sciences, Okayama University, Kita-ku, Okayama, Japan
| | - Y. Nishina
- Research Core for Interdisciplinary Sciences, Okayama University, Kita-ku, Okayama, Japan
- Graduate School of Natural Science and Technology, Okayama University, Kita-ku, Okayama, Japan
| | - T. Yamamoto
- Department of Pathophysiology—Periodontal Science, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Kita-ku, Okayama, Japan
| | - Y. Shinoda-Ito
- Department of Periodontics and endodontic, Okayama University Hospital, Kita-ku, Okayama, Japan
| | - S. Takashiba
- Department of Pathophysiology—Periodontal Science, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Kita-ku, Okayama, Japan
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Shi Y, Shen D, Zheng H, Wu Z, Shao C, Zhang L, Pan H, Tang R, Fu B. Therapeutic Management of Demineralized Dentin Surfaces Using a Mineralizing Adhesive To Seal and Mineralize Dentin, Dentinal Tubules, and Odontoblast Processes. ACS Biomater Sci Eng 2019; 5:5481-5488. [PMID: 33464067 DOI: 10.1021/acsbiomaterials.9b00619] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dentin hypersensitivity is attributable to the exposed dentin and its patent tubules. We proposed the therapeutic management of demineralized dentin surfaces using a mineralizing adhesive to seal and remineralize dentin, dentinal tubules, and odontoblast processes. An experimental self-etch adhesive and a mineralizing adhesive consisting of the self-etch adhesive and 20 wt % poly-aspartic acid-stabilized amorphous calcium phosphate (PAsp-ACP) nanoparticles were prepared and characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), and scanning electron microscopy. After 60 acid-etched midcoronal dentin disks were treated with distilled water (control), a desensitizing agent (Gluma), the experimental self-etch adhesive, and the mineralizing adhesive, dentin permeability was measured and mineralization was evaluated by Raman, FTIR, XRD, TEM, and selected-area electron diffraction, irrespective of abrasive and acidic challenges. In vitro cytotoxicity of the adhesive and the mineralizing adhesive was assessed by Cell Counting Kit-8. The mineralizing adhesive possessed excellent biocompatibility. We proposed a hybrid mineralization layer composed of the light-cured mineralizing adhesive and the mineralized dentin surfaces, as well as interiorly mineralized resin tags and odontoblast processes inside of the dentinal tubules. This hybrid mineralization not only reduced dentin permeability but also resisted abrasive and acidic attacks.
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Affiliation(s)
- Ying Shi
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Hangzhou 310029, Zhejiang, China
| | - Dongni Shen
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Hangzhou 310029, Zhejiang, China
| | - Haiyan Zheng
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Hangzhou 310029, Zhejiang, China
| | | | | | - Leiqing Zhang
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Hangzhou 310029, Zhejiang, China
| | | | | | - Baiping Fu
- Key Laboratory for Oral Biomedical Research of Zhejiang Province, Hangzhou 310029, Zhejiang, China
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Choi AN, Jang IS, Son SA, Jung KH, Park JK. Effect of erosive and abrasive stress on sealing ability of different desensitizers: In-vitro study. PLoS One 2019; 14:e0220823. [PMID: 31369650 PMCID: PMC6675100 DOI: 10.1371/journal.pone.0220823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/23/2019] [Indexed: 11/30/2022] Open
Abstract
This in vitro study examined the sealing ability of different desensitizing agents under a chemo-mechanical stress condition. For the study, a total of 144 extracted, caries-free human third molars were used to produce 1 mm-thick dentin discs. The specimens were divided randomly into four groups: Superseal (SS), Gluma (GL), Gluma Self-etch (GS), and Tooth Coat (TC). For each group, the permeability was measured before and after applying the desensitizer, after being exposed to Coca Cola for 5 minutes, and after 3150 strokes of a brushing abrasion. The decrease in permeability after the erosive and abrasive stress was analyzed by ANOVA and Tukey post hoc test. As a result, the dentin permeability decreased significantly for all desensitizers immediately after application (p < 0.05). SS and GS showed a significant difference in permeability reduction observed immediately after application and after acid action with Coca Cola (p < 0.05). After brushing abrasion, the permeability reduction decreased significantly for all desensitizers tested in this study (p < 0.05). TC showed the largest decrease in dentinal permeability compared to that of the other desensitizers and the differences were significant after brushing abrasion (p < 0.05). All tested desensitizers were effective in reducing dentin permeability. The behavioral characteristics under erosive and abrasive stress varied according to the products used. TC exhibited excellent sealing ability among the other desensitizers.
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Affiliation(s)
- An-Na Choi
- Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute, Yangsan, Korea
| | - Il-Seok Jang
- Department of Microbiology, School of Natural Sciences, Pusan National University, Busan, Korea
| | - Sung-Ae Son
- Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute, Yangsan, Korea
| | - Kyoung-Hwa Jung
- Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute, Yangsan, Korea
| | - Jeong-Kil Park
- Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute, Yangsan, Korea
- * E-mail:
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Hajizadeh H, Nemati-Karimooy A, Majidinia S, Moeintaghavi A, Ghavamnasiri M. Comparing the effect of a desensitizing material and a self-etch adhesive on dentin sensitivity after periodontal surgery: a randomized clinical trial. Restor Dent Endod 2017; 42:168-175. [PMID: 28808633 PMCID: PMC5553016 DOI: 10.5395/rde.2017.42.3.168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 06/22/2017] [Indexed: 11/20/2022] Open
Abstract
Objectives This double-blind randomized placebo-controlled clinical trial evaluated the ability of a desensitizing agent and a self-etch adhesive on cervical dentin sensitivity (CDS) after periodontal surgery. Materials and Methods Ninety hypersensitive teeth of 13 subjects were included in the study. After periodontal surgery, the teeth of each posterior sextant treated with one of the following materials: G1: Clearfil S3 Bond (Kuraray Dental), G2: Gluma Desensitizer (Heraeus Kulzer), and G3: placebo (water). The sensitivity was assessed using evaporative stimuli before treatment (baseline, T0), 1 day after treatment (T1), after 1 week (T2), and after 1 month (T3) according to visual analog scale (VAS). Results Following the treatment, all the 3 groups showed significant reduction of CDS in T1 compared to T0. Reduction of CDS between T1 and T2 was observed only in G1 but there was no significant difference between T2 and T3 in this group. Although we observed a significant difference in T3 compared to T1 and T2 in G2 and G3, comparison of treatment groups in each assessment time showed a significant difference only in T3. According to paired comparison, this was due to the difference between G2 and G3. Conclusions Dentin sensitivity following periodontal surgery will decrease spontaneously over time, but treating the sensitive teeth with Gluma Desensitizer and Clearfil S3 Bond can have some benefits.
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Affiliation(s)
- Hila Hajizadeh
- Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Restorative and Cosmetic Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Atefeh Nemati-Karimooy
- Department of Restorative and Cosmetic Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sara Majidinia
- Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Restorative and Cosmetic Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Moeintaghavi
- Department of Periodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Wu Z, Wang X, Wang Z, Shao C, Jin X, Zhang L, Pan H, Tang R, Fu B. Self-Etch Adhesive as a Carrier for ACP Nanoprecursors to Deliver Biomimetic Remineralization. ACS APPLIED MATERIALS & INTERFACES 2017; 9:17710-17717. [PMID: 28525257 DOI: 10.1021/acsami.7b01719] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Lab biomineralization should be carried out in an actual clinical practice. This study evaluated self-etch adhesive as a carrier for amorphous calcium phosphate (ACP) nanoprecursors to continuously deliver biomimetic remineralization of self-assembly type I collagen and demineralized dentin. Si-containing ACP particles (Si-ACP) stabilized with polyaspartic acid (PAsp) were synthesized and characterized by transmission electron microscopy (TEM), scanning electron microscopy-energy-dispersive X-ray spectroscopy, Fourier transform infrared analysis, X-ray powder diffractometry, and X-ray phototelectron spectroscopy. The biomimetic remineralization of single-layer reconstituted type I collagen fibrils and demineralized dentin was analyzed by using two one-bottle self-etch dentin adhesives (Clearfil S3 Bond (S3), Kurraray-Noritake; Adper Easy One (AEO), 3 M ESPE) as a carrier loaded (or not, in the case of the control) with 25 wt % of Si-ACP particles. In vitro cytotoxicity assessed by the Cell Counting Kit-8 indicated that the Si-ACP particles had no adverse effect on cell viability. The capacity for Ca and P ions release from cured Si-ACP-containing adhesives (S3, AEO) was evaluated by inductively coupled plasma-atomic emission spectrometry, revealing the successively increasing release of Ca and P ions for 28 days. The intra- and extrafibrillar remineralization of type I collagen and demineralized dentin was confirmed by TEM and selected-area electron diffraction when the adhesives were used as a carrier loaded with Si-ACP particles. Therefore, we propose self-etch adhesive as a novel carrier for ACP nanoprecursors to continuously deliver biomimetic remineralization.
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Affiliation(s)
- Zhifang Wu
- Department of Prosthodontics, Hospital of Stomatology, Zhejiang University School of Medicine , Hangzhou 310006, Zhejiang China
- Key Laboratory for Oral Biomedical Research of Zhejiang Province , Hangzhou 310006, Zhejiang China
| | - Xiaokan Wang
- Department of Prosthodontics, Hospital of Stomatology, Zhejiang University School of Medicine , Hangzhou 310006, Zhejiang China
| | - Zhe Wang
- Department of Prosthodontics, Hospital of Stomatology, Zhejiang University School of Medicine , Hangzhou 310006, Zhejiang China
- Key Laboratory for Oral Biomedical Research of Zhejiang Province , Hangzhou 310006, Zhejiang China
| | | | - Xiaoting Jin
- Department of Prosthodontics, Hospital of Stomatology, Zhejiang University School of Medicine , Hangzhou 310006, Zhejiang China
- Key Laboratory for Oral Biomedical Research of Zhejiang Province , Hangzhou 310006, Zhejiang China
| | - Leiqing Zhang
- Department of Prosthodontics, Hospital of Stomatology, Zhejiang University School of Medicine , Hangzhou 310006, Zhejiang China
- Key Laboratory for Oral Biomedical Research of Zhejiang Province , Hangzhou 310006, Zhejiang China
| | | | | | - Baiping Fu
- Department of Prosthodontics, Hospital of Stomatology, Zhejiang University School of Medicine , Hangzhou 310006, Zhejiang China
- Key Laboratory for Oral Biomedical Research of Zhejiang Province , Hangzhou 310006, Zhejiang China
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Mozaffari HR, Ehteshami A, Zallaghi F, Chiniforush N, Moradi Z. Microleakage in Class V Composite Restorations after Desensitizing Surface Treatment with Er:YAG and CO 2 Lasers. Laser Ther 2016; 25:259-266. [PMID: 28765670 DOI: 10.5978/islsm.16-or-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Aims: Glutaraldehyde, CO2 and Er:YAG lasers can be used for treatment of dentin hypersensitivity. However, their application may have adverse effects on the clinical service of restorations. This study aimed to assess the microleakage in composite restorations following surface treatment with Glutaraldehyde desensitizer, CO2 and Er:YAG laser irradiation for treatment of dentin hypersensitivity. Materials and methods: This experimental study was conducted on 60 extracted sound human teeth. Class V cavities were prepared measuring 3×3 mm using a diamond bur. Specimens were randomly divided into 4 groups of 15. Group one:no surface treatment, Group two:applying Glutaraldehyde desensitizer, Groups of three and four were irradiated with CO2 and Er:YAG lasers, respectively. Surfaces were restored with bonding agent (Single Bond 2, 3M, USA) and Z250 composite (3M, USA). Specimens were thermocycled and immersed in 1% methylene blue solution for 24 hours. Microleakage scores were assessed under a stereomicroscope at ×20 magnification. Data were analyzed using SPSS and the Kruskal Wallis test (P=0.05). Results: There was no significant difference between microleakage of groups in enamel margins (P=0.694). The difference in microleakage at the dentin margin was significant between groups (P=0.018). Conclusions: Application of Glutaraldehyde-desensitizer and CO2 laser irradiation of surfaces prior to composite restoration do not increase microleakage at the enamel or dentin margins but tooth surface treatment with Er:YAG laser significantly increased the microleakage at the dentin margins.
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Affiliation(s)
- Hamid Reza Mozaffari
- Oral Medicine Department, School of Dentistry, Kermanshah University of Medical Sciences
| | | | | | - Nasim Chiniforush
- Laser Research Center of Dentistry, Tehran University of Medical Sciences
| | - Zohreh Moradi
- Operative Department, School of Dentistry, Tehran University of Medical Sciences
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Sabatini C, Wu Z. Effect of Desensitizing Agents on the Bond Strength of Mild and Strong Self-etching Adhesives. Oper Dent 2015; 40:548-57. [PMID: 25575197 DOI: 10.2341/14-190-l] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Desensitizing agents are used, almost as routine practice, in many adhesive restorative procedures. There is still debate as to their effect in dentin bonding, particularly with self-etching adhesives. The present study aimed to evaluate the effect of different desensitizing agents on the bond strength of mild and strong self-etching adhesive systems to dentin. MATERIALS AND METHODS One hundred twenty recently extracted, noncarious human molars were used to obtain superficial dentin substrate for bonding. No desensitizer was used in the control groups. The experimental groups were pretreated with Gluma Desensitizer, MicroPrime B, and Dentin Desensitizer immediately prior to bonding with self-etching adhesives Optibond XTR, Xeno IV, and iBond. A bonding jig was used to fabricate composite cylinders, which were stored for either 24 hours or three months, after which the shear bond strength (SBS) was evaluated using a notched-edge testing device at a crosshead speed of 1 mm/min. Failure mode distribution was also evaluated at 24 hours and three months. A two-way analysis of variance, Tukey test, and Student t-test, with a significance level of p<0.05, were used for data analysis. RESULTS At 24 hours, there was no significant difference in SBS when the same adhesive was used with any of the experimental desensitizing agents compared with the control group without desensitizer. However, at three months, Dentin Desensitizer bonded with Optibond XTR demonstrated significantly lower SBS (p<0.001), while Gluma bonded with iBond showed significantly higher SBS values (p=0.034) relative to their corresponding control group. Only MicroPrime B bonded with Xeno IV and iBond with no desensitizer demonstrated a significant reduction in SBS after three months (p=0.034 and p=0.002, respectively). The most prevalent type of failure was adhesive. CONCLUSION Desensitizing agents can be used in combination with self-etching adhesives to control hypersensitivity without adversely affecting their bond strength to dentin.
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TIAN L, PENG C, SHI Y, GUO X, ZHONG B, QI J, WANG G, CAI Q, CUI F. Effect of mesoporous silica nanoparticles on dentinal tubule occlusion: An in vitro study using SEM and image analysis. Dent Mater J 2014; 33:125-32. [DOI: 10.4012/dmj.2013-215] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Dentin tubule occlusion and erosion protection effects of dentifrice containing bioadhesive PVM/MA copolymers. Clin Oral Investig 2012; 17:775-83. [DOI: 10.1007/s00784-012-0772-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Accepted: 06/11/2012] [Indexed: 10/28/2022]
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14
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Effects of applying glutaraldehyde-containing desensitizer formulations on reducing dentin permeability. J Dent Sci 2012. [DOI: 10.1016/j.jds.2012.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Jose P, Sakhamuri S, Sampath V, Sanjeev K, Sekar M. Degree of conversion of two dentin bonding agents with and without a desensitizing agent using fourier transform infrared spectroscopy: An in vitro study. J Conserv Dent 2011; 14:302-5. [PMID: 22025838 PMCID: PMC3198564 DOI: 10.4103/0972-0707.85821] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 12/30/2010] [Accepted: 01/29/2011] [Indexed: 12/12/2022] Open
Abstract
Objective: This in vitro study investigated the effect of a desensitizer on the degree of conversion of two bonding resins using Fourier transform infrared (FTIR) spectroscopy. Materials and Methods: An etch-and-rise bonding resin and a self-etching adhesive resin were selected for the study. Vivasens (Ivoclar Vivadent) was used as a desensitizing agent. Grouping was done as follows: Group I: Adper Single Bond (n=10), Group II: Adper Single Bond + Vivasens (n=10), Group III: AdheSE One (n=10), Group IV: AdheSE One + Vivasens (n=10). The bonding resin alone was light cured for 20 seconds in groups I and III. For groups II and IV, 1 ml each of the bonding resin and the desensitizer was mixed in a vial and light cured for 20 seconds. The specimens were analysed using FTIR spectroscopy. Results: Group II (Adper Single Bond + Vivasens) showed a significantly higher degree of conversion compared to Group I (Adper Single Bond). Comparing Groups III and IV, Group IV (AdheSE One + Vivasens) showed a significantly higher degree of conversion compared to Group III (AdheSE One). Conclusions: The degree of conversion is increased when a dentin bonding agent is used along with a desensitizer. Hence, this combination can be recommended to effectively control postoperative sensitivity.
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Affiliation(s)
- Poornima Jose
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Bharathi Salai, Ramapuram, Chennai, India
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Geraldeli S, Li Y, Hogan MMB, Tjaderhane LS, Pashley DH, Morgan TA, Zimmerman MB, Brogden KA. Inflammatory mediators in fluid extracted from the coronal occlusal dentine of trimmed teeth. Arch Oral Biol 2011; 57:264-70. [PMID: 21930261 DOI: 10.1016/j.archoralbio.2011.08.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 08/16/2011] [Accepted: 08/21/2011] [Indexed: 12/30/2022]
Abstract
BACKGROUND Chemokines and cytokines may occur in dentinal fluids in response to local infection and inflammation. To test this hypothesis, we assessed the presence and concentration of inflammatory mediators in fluid extracted from the coronal occlusal dentine of trimmed teeth. DESIGN Freshly extracted sound, carious, and restored molars were trimmed through the enamel to expose the underlying dentine, etched with 35% phosphoric acid, and rinsed. Fluid was extracted from the coronal occlusal dentine of these trimmed teeth by centrifugation at 2750 × g for 30 min. RESULTS When assessed by MALDI-TOF, fluid extracted from the coronal occlusal dentine from 16 molars contained at least 117 peaks with different masses suggesting that this fluid was rich with molecules within the appropriate mass range of potential mediators. Indeed, when assessed for chemokines and cytokines, fluid extracted from the coronal occlusal dentine from 25 extracted molars with caries lesions, 10 extracted restored molars with occlusal amalgam, and 77 extracted sound molars contained IL-1β, TNF-α, IL-6, IL-8, IL-12(p70), and IL-10. A significant elevation was found for TNF-α (p=0.041) in extracted fluid from teeth restored with amalgam fillings. CONCLUSIONS Overall, fluid extracted from the coronal occlusal dentine of trimmed teeth may be useful in identifying proteins and other molecules in dentine and pulpal fluids and determining their role as mediators in the pathogenesis of oral infection and inflammation.
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Affiliation(s)
- Saulo Geraldeli
- Restorative Dental Sciences Operative Division, College of Dentistry, University of Florida, Gainesville, 32610, USA.
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Yu X, Liang B, Jin X, Fu B, Hannig M. Comparative In Vivo Study on the Desensitizing Efficacy of Dentin Desensitizers and One-bottle Self-etching Adhesives. Oper Dent 2010; 35:279-86. [DOI: 10.2341/09-346-c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Clinical Relevance
Dentin desensitizers and one-bottle self-etching adhesives can significantly reduce dentin hypersensitivity. Clinical desensitizing effectiveness depends on the individual dentin desensitizers/adhesives used.
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Lommer MJ. Diagnostic imaging in veterinary dental practice: right mandibular first molar. J Am Vet Med Assoc 2008; 232:1139-41. [PMID: 18412522 DOI: 10.2460/javma.232.8.1139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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