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Cvitanović S, Zovko R, Mabić M, Jurišić S, Jelić-Knezović N, Glavina D, Goršeta K. Shear Bond Strength of Orthodontic Brackets Bonded with Thermo-Cured Glass-Based Materials-An In Vitro Study. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3090. [PMID: 38998172 PMCID: PMC11242671 DOI: 10.3390/ma17133090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/29/2024] [Accepted: 06/19/2024] [Indexed: 07/14/2024]
Abstract
The results of orthodontic therapy largely depend, among other factors, on the preparation of the tooth enamel itself and the choice of material used to bond orthodontic brackets. The aim of this in vitro study was to determine the shear bond strength (SBS) and adhesive remnant index (ARI) score of thermo-cured glass-ionomers on different pretreated enamel, in comparison with the commonly used composite cement. Three commercially available nano-ionomer or highly viscous glass-ionomer cements (EQUIA Forte® Fil, EQUIA Fil, Ketac Universal) and two types of compo-sites (Heliosit Orthodontic, ConTec Go!) were investigated in this study. The research involved two hundred human premolars. The teeth were cleaned and polished, then randomly divided into five groups according to the enamel preparation method and the type of material. The enamel was treated in three different ways: polyacrylic acid, phosphoric acid, 5% NaOCl + etching with phosphoric acid, and a control group without treatment. Glass-ionomer cement was thermo-cured with heat from a polymerization unit during setting. Statistical analysis was performed using a Chi-square test and one-way ANOVA for independent samples. Spearman's Rho correlation coefficient was used to examine the relationship. Regardless of the material type, the results indicated that the weakest bond between the bracket and tooth enamel was found in samples without enamel pretreatment. The majority of the materials stayed on the brackets in samples without enamel preparation, according to ARI scores. The study's findings demonstrated that the strength of the adhesion between the bracket and enamel is greatly influenced by enamel etching and glass-ionomer thermo-curing. Clinical investigations would be required to validate the outcomes.
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Affiliation(s)
- Stipo Cvitanović
- Health Care Center Prozor-Rama, Study of Dental Medicine, School of Medicine, University of Mostar, Mostar 88000, Bosnia and Herzegovina
| | - Ružica Zovko
- Health Care Center Mostar, Study of Dental Medicine, School of Medicine, University of Mostar, Mostar 88000, Bosnia and Herzegovina
| | - Mirela Mabić
- Faculty of Economics, University of Mostar, Mostar 88000, Bosnia and Herzegovina
| | - Sanja Jurišić
- Study of Dental Medicine, School of Medicine, University of Mostar, Mostar 88000, Bosnia and Herzegovina
| | | | - Domagoj Glavina
- School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Kristina Goršeta
- School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia
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Al Taweel SM, Zinelis S, Sofyan A, Al Jabbari YS. Does surface priming increase the bond strength of orthodontic brackets? An experimental study. Clin Exp Dent Res 2024; 10:e888. [PMID: 38712436 DOI: 10.1002/cre2.888] [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: 09/07/2023] [Revised: 04/03/2024] [Accepted: 04/17/2024] [Indexed: 05/08/2024] Open
Abstract
OBJECTIVE To evaluate the effects of metal primer II (MP II) on the shear bond strength (SBS) of orthodontic brackets bonded to teeth and bis-acryl composite provisional material (Bis-Acryl). MATERIAL AND METHODS Twenty extracted human premolars specimens and 20 premolar shaped Bis-Acryl specimens were obtained and randomly divided into two surface groups. The first group consisted of human premolars (T) bonded to brackets in the conventional way while in the second (T-MP) MP II was applied on the bracket base before bonding. Similarly, one group of provisional material (PM) was prepared according to conventional treatment and another with the application of MP-II metal bonder (PM-MP). In all cases Ortho-brackets (Victory Series, 3 M) were bonded employing Transbond XT resin cement. Then the brackets were debonded under shear and the results were statistically analyzed by two-way analysis of variance and Holm Sidak at α = .05. The debonded surfaces of all specimens were examined by light microscopy and the Adhesive Remnant Index (ARI) was recorded. RESULTS The SBS results exhibited significant differences er (p < .001). For both the T and TM the application of MP-II increased the SBS compared to respective control groups (p < .001). The T-C group was found inferior compared to PM-C (p < .001) and the same is true for the comparison between T-MP and PM-MP (p < .001). ARI indexes demonstrated that the tooth groups were characterized by a predominantly adhesive failure at the resin-dentin interface. In contrast, the control group for provisional crowns (PM-C) showed a predominantly cohesive failure mode, which moved to predominantly adhesive after the application of MP II. CONCLUSION The application of MP II enhances the SBS on both, human enamel and provisional crown materials.
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Affiliation(s)
- Sara M Al Taweel
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
- Dental Biomaterials Research and Development Chair, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Spiros Zinelis
- Dental Biomaterials Research and Development Chair, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
- Department of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Arif Sofyan
- Dental Biomaterials Research and Development Chair, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Youssef S Al Jabbari
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
- Dental Biomaterials Research and Development Chair, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
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Yilmaz BS, Yildirim ZB, Seker ED, Ozden F, Kurt G. Evaluation of shear bond strength of orthodontic adhesives with integrated primer: A comparative study. APOS TRENDS IN ORTHODONTICS 2023. [DOI: 10.25259/apos_218_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Objectives:
The study aimed to compare the shear bond strength (SBS) of three orthodontic adhesives with integrated primer, with those of self-etching and conventional bonding adhesives.
Material and Methods:
One hundred extracted premolars were randomly allocated to five groups. Brackets were bonded using three adhesives with integrated primer (GC Ortho Connect™, Biofix, and Orthocem). A group of brackets was bonded with the conventional bonding procedure (Transbond XT) and one group was bonded with a self-etching primer (Transbond™ Plus). All samples were subjected to thermal aging (5000 cycles: At 5°C and 55°C media). The compressive strength test was performed and the maximum load when the bracket detached was recorded. The amount of residual adhesive (ARI) remaining on the tooth surface was assessed visually.
Results:
Significantly higher SBS values were recorded with the conventional technique (14.01 ± 5.79 megapascals [MPa]), compared to other groups except for GC Ortho Connect™ (11.86 ± 3.83 MPa). There was no significant difference between the self-etching group and the groups containing integrated primer samples. However, one of the adhesives with integrated primer presented SBS values near-slightly below the limit considered clinically successful (7.65 ± 3.71 MPa). The ARI scores varied between adhesive groups; GC Ortho Connect™ and the self-etching primer samples showed statistically significantly higher scores compared to the three other groups.
Conclusion:
Clinically successful bonding values were achieved with two out of three different adhesives with integrated primer. One of the adhesives with integrated primer provided a similar SBS value to the tri-step conventional bonding procedure. ARI scores varied independently from SBS values.
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Affiliation(s)
- Berza Sen Yilmaz
- Department of Orthodontics, Bezmialem Vakif University, Istanbul, Turkey,
| | | | - Elif Dilara Seker
- Department of Orthodontics, Bezmialem Vakif University, Istanbul, Turkey,
| | - Furkan Ozden
- Department of Orthodontics, Bezmialem Vakif University, Istanbul, Turkey,
| | - Gokmen Kurt
- Department of Orthodontics, Bezmialem Vakif University, Istanbul, Turkey,
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Cakmak Ozlu F, Yazıcıoğlu S. Effect of self-etch primer application on the bond failure rate of a mandibular bonded lingual retainer. BMC Oral Health 2022; 22:653. [PMID: 36581875 PMCID: PMC9800235 DOI: 10.1186/s12903-022-02691-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The aim of this study was to examine the effect of self-etch primer (SEP) application on the bond failure rate of a mandibular bonded lingual retainer over 24 months. METHODS The average age of the 86 individuals included in this study was 17 years 4 months. After the removal of the orthodontic appliances, the lingual retainers, which were made of six-stranded stainless steel wire, were bent and bonded onto the lingual surface of all mandibular anterior teeth. The study was performed using a split-mouth design. In the study group, the SEP was administered to the teeth's lingual surfaces. In the control group, they were etched using 37% phosphoric etchant liquid gel. After etching, the primer was applied. The adhesive resin was applied and the retainer was fitted. The patients were re-evaluated over 24 months. The first bond failures and the amount of adhesive remaining on the tooth were recorded as the adhesive remnant index (ARI) scores. The chi-square test was used to compare the bond failure rates (P = 0.231) and ARI scores between the groups (P = 0.162). The survival rates of the retainers were estimated using the Kaplan-Meier test (P = 0.237). The significance level was P < 0.05. RESULTS The bond failure rates, ARI scores, and survival rates did not differ significantly between the groups. CONCLUSIONS The results of this study demonstrated that an SEP can be used successfully in mandibular lingual retainer bonding. In situations where saliva isolation is difficult, bonding a fixed lingual retainer with SEP is recommended.
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Affiliation(s)
- Fethiye Cakmak Ozlu
- grid.411049.90000 0004 0574 2310Department of Orthodontics, Faculty of Dentistry, University of Ondokuz Mayıs, 55270 Atakum, Samsun, Turkey
| | - Sabahat Yazıcıoğlu
- grid.411049.90000 0004 0574 2310Department of Orthodontics, Faculty of Dentistry, University of Ondokuz Mayıs, 55270 Atakum, Samsun, Turkey
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Palesik B, Šileikytė K, Griškevičius J, Stonkus R, Šidlauskas A, Lopatienė K. Impact of temperature changes to the adhesion strength of molar tubes: an in vitro study. BMC Oral Health 2022; 22:115. [PMID: 35395793 PMCID: PMC8994271 DOI: 10.1186/s12903-022-02144-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/23/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The main purpose of this was to determine study adhesion strength of molar tubes bonding with a composite adhesive after exposure to a sudden change in temperature (thermal cycles). METHODS The study sample consisted of 40 recently extracted human first permanent molars, which were randomly divided into two groups of 20: group 1 was the experimental group (affected by thermal cycles), and group 2 was the control group. Molar tubes were bonded with a light-cure tube adhesive. The experimental group teeth were dipped 2,000 times in saline at 5 °C and at 55 °C. The control group were immersed in 37 °C saline. Molar tubes for both groups were removed with an adapted Mecmesim Multitesters 2.5-I, and the data were recorded with EMPEROR software. ANOVA was used to calculate and compare the results. RESULTS In the experimental group of the teeth, the maximum force was obtained at 94.2 N and the lowest force was 19.69 N. In the control group of the teeth, the maximum force was obtained at 159.1 N and the lowest force was 28.1 N. In the experimental group, the mean debonding force (59.12 N) was statically significantly smaller than in the control group (79.88 N), p = 0.0345. The forces in the control group were by 1.35 times greater than those in the experimental group. CONCLUSIONS The forces of the adhesion of molar tubes to the tooth surface were reduced after exposure to a sudden change in temperature (thermal cycles). The results were significantly different between the experimental group and the control group.
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Affiliation(s)
- Benedikta Palesik
- Department of Orthodontics, Lithuanian University of Health Sciences, J. Lukšos - Daumanto str. 6, 50106, Kaunas, Lithuania.
| | - Kotryna Šileikytė
- Department of Biomechanical Engineering, VILNIUS TECH, J. Basanavicius Str. 28, Vilnius, Lithuania
| | - Julius Griškevičius
- Department of Biomechanical Engineering, VILNIUS TECH, J. Basanavicius Str. 28, Vilnius, Lithuania
| | - Rimantas Stonkus
- Department of Biomechanical Engineering, VILNIUS TECH, J. Basanavicius Str. 28, Vilnius, Lithuania
| | - Antanas Šidlauskas
- Department of Orthodontics, Lithuanian University of Health Sciences, J. Lukšos - Daumanto str. 6, 50106, Kaunas, Lithuania
| | - Kristina Lopatienė
- Department of Orthodontics, Lithuanian University of Health Sciences, J. Lukšos - Daumanto str. 6, 50106, Kaunas, Lithuania
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Siloranes-Suitability of a Novel Adhesive for Orthodontic Bracket Bonding. Dent J (Basel) 2021; 9:dj9110135. [PMID: 34821599 PMCID: PMC8625760 DOI: 10.3390/dj9110135] [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: 09/13/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 11/16/2022] Open
Abstract
Recently, an epoxy-based resin-Filtek Silorane-has been proposed for restorative fillings. It was the aim of the investigation to evaluate the suitability of this novel resin for orthodontic bracket bonding on unground enamel. Shear bond strength was measured for two adhesives-Filtek Silorane, Transbond XT-in combination with steel, ceramic and polymer brackets. For Filtek Silorane etching was performed with the Silorane self-etching primer, as well as phosphoric acid. The Transbond XT samples were etched with phosphoric acid only and served as the control group. All samples were thermo-cycled (1000×, 5-55 °C). Shear testing was carried out with an Instron 3344. In addition, ARI scores were evaluated. The Shear bond strength showed a weak adhesion of Filtek Silorane to unprepared enamel, either with the self-etching primer or the conventional etching (0.87-4.28 MPa). The Shear bond strength of the control group was significantly higher (7.6-16.5 MPa). The ARI scores showed a clear failure at the enamel-adhesive interface for all Filtek Silorane samples. For the combination of Transbond XT and different brackets the failure was found at the adhesive-bracket interface. The novel epoxy-based resin Filtek Silorane is not appropriate for bracket bonding to unprepared enamel.
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Zhang X, Zhang Q, Meng X, Ye Y, Feng D, Xue J, Wang H, Huang H, Wang M, Wang J. Rheological and Mechanical Properties of Resin-Based Materials Applied in Dental Restorations. Polymers (Basel) 2021; 13:2975. [PMID: 34503014 PMCID: PMC8433687 DOI: 10.3390/polym13172975] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 08/28/2021] [Accepted: 08/28/2021] [Indexed: 11/26/2022] Open
Abstract
Resin-based materials have been prevalent for dental restorations over the past few decades and have been widely used for a variety of direct and indirect procedures. Typically, resin-based dental materials are required to be flowable or moldable before setting and can provide adequate mechanical strength after setting. The setting method may include, but is not limited to, light-curing, self-curing or heating. In this review, based on different indications of resin-based dental materials (e.g., dental filling composite, dental bonding agent, resin luting cement), their rheological and mechanical properties were reviewed. Viscous and flexible properties were focused on for materials before setting, while elastic properties and mechanical strength were focused on for materials after setting. At the same time, the factors that may affect their rheological and mechanical properties were discussed. It is anticipated that the insightful information and prospections of this study will be useful to the future development and fabrication of resin-based dental restorative materials.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Jing Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 Xincun Rd., Zibo 255000, China; (X.Z.); (Q.Z.); (X.M.); (Y.Y.); (D.F.); (J.X.); (H.W.); (H.H.); (M.W.)
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Effects of enamel deproteinization with different application times on the shear bond strength of a self-etching primer: An in vitro study. Int Orthod 2021; 19:505-511. [PMID: 34112607 DOI: 10.1016/j.ortho.2021.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/15/2021] [Accepted: 05/16/2021] [Indexed: 11/20/2022]
Abstract
OBJECTIVE The aim of this in vitro study was to evaluate the effects of enamel deproteinization on the shear bond strength of a self-etching primer Transbond Plus™(TBP), with different application times of sodium hypochlorite (NaOCl 5.25%), primarily and secondarily on the adhesive remnant index score. MATERIALS AND METHODS One hundred twenty-five freshly extracted human premolars were randomly and blindly divided into five groups according to the enamel surface preparation, as follows (n=25): group 1(control): Etching with 37% phosphoric acid for 15seconds+Bonding; group 2 (control): TBP™ without NaOCl, group 3: 60seconds NaOCl+TBP™, group 4: 30seconds NaOCl+TBP™, group 5: 15seconds NaOCl+TBP™. The same composite resin was used (Transbond XT™) to bond the orthodontic metal brackets. After the immersion of the teeth in distilled water at 37°C for 24hours the shear bond strength was measured using the universal testing machine and the adhesive remnant index score (ARI) was evaluated under an optical microscope (25×). RESULTS The mean SBS values (inMPa) of the groups were respectively: group 1: 13.03±5.36; group 2: 12.28±3.06; group 3: 12.38±4.55; group 4: 12.98±5.76; and group 5: 11.73±5.67. Enamel deproteinization increased the SBS for groups 3 and 4, but no statistically significant difference was found between the five groups (P=0.883). Group 1 showed the highest ARI scores, with 52% of the teeth retaining all the adhesive (score 3). However, for all the other groups, scores 0 and 1 were predominant, with less than half of the adhesive or no adhesive at all remaining on the teeth. CONCLUSIONS Enamel deproteinization with sodium hypochlorite (5.25%) and the variation of its application time has no effect on the SBS of the self-etching primer Transbond Plus ™.
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Yoo SY, Kim SK, Heo SJ, Koak JY, Kim JG. Effects of Bonding Agents on Metal-Ceramic Bond Strength of Co-Cr Alloys Fabricated by Selective Laser Melting. MATERIALS 2020; 13:ma13194322. [PMID: 32998322 PMCID: PMC7579445 DOI: 10.3390/ma13194322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 12/04/2022]
Abstract
Bonding agents have been developed to improve bond strength between ceramic and Co-Cr metal. The aim of this study was to investigate the influence of two bonding agents on bond strength of Co-Cr metal fabricated by selective laser melting (SLM). Bond strength was determined by a three-point bending test, and the interfaces of the metal and ceramic, before and after the bending test, were observed by optical microscopy and scanning electron microscopy (SEM) to determine the thickness of the oxide layer and amount of ceramic remaining. To analyze the elemental composition of the bonding agents and fractured surfaces, energy dispersive X-ray spectroscopy (EDS) was used. Co-Cr specimens with bonding agent showed significantly higher bond strength than Co-Cr specimens without bonding agents. The fractured surfaces of most specimens showed mixed failure, but failure mode varied according to bonding agent and fabrication type. Specimens from groups treated with bonding agents had significantly higher remaining ceramic fractions on fractured Co-Cr alloys than specimens from groups that did not receive bonding agent. Mass amounts of silicone (Si) and titanium (Ti) on the fractured alloy surfaces were also different among specimens according to method of fabrication and presence of bonding agent. Together, the results suggest that application of bonding agent to 3D printed Co-Cr metal increases bond strength with ceramics.
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Affiliation(s)
- Soo-Yoen Yoo
- Department of Prosthodontics and Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea; (S.-Y.Y.); (S.-J.H.); (J.-Y.K.)
| | - Seong-Kyun Kim
- Department of Prosthodontics and Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea; (S.-Y.Y.); (S.-J.H.); (J.-Y.K.)
- Correspondence: ; Tel.: +82-2-2072-3860
| | - Seong-Joo Heo
- Department of Prosthodontics and Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea; (S.-Y.Y.); (S.-J.H.); (J.-Y.K.)
| | - Jai-Young Koak
- Department of Prosthodontics and Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea; (S.-Y.Y.); (S.-J.H.); (J.-Y.K.)
| | - Joung-Gyu Kim
- Sense Dental Laboratory, 1104, Seoul Soop IT-Valley, 77, Seongsuil-ro, Seongdong-gu, Seoul 04790, Korea;
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Iglesias A, Flores T, Moyano J, Artés M, Gil FJ, Puigdollers A. In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2644. [PMID: 32531966 PMCID: PMC7321563 DOI: 10.3390/ma13112644] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 11/17/2022]
Abstract
This study aimed to compare the shear bond strength (SBS) and adhesive remaining index (ARI) using one conventional and two novel adhesive systems with clinical step reduction and direct and indirect bonding. A sample of 72 human premolars were divided into six groups of 12 samples. The first three groups (G1, G2, G3) were bonded with a direct technique, while the remaining groups (G4, G5, G6) were bonded by the indirect technique. Groups G1 and G4 used conventional acid-etching primer composite (XT); groups G2 and G5 used self-etching bonding (BO), and groups G3 and G6 had an acid-etching treatment followed by a self-adhesive composite (OC). All groups were exposed to thermocycling. Shear bond strength was analyzed with a universal test machine, and the ARI was examined with 4× magnification. The results showed statistically significant differences between the three adhesive systems. The highest strength values were observed in the XT group G1 (13.54 ± 4 MPa), while the lowest were shown in the BO G2 samples (5.05 ± 2 MPa). There was no significant difference between the direct or indirect bonding techniques on the three compared groups. The type of primer and bonding material significantly influenced the SBS. Values with self-etching bonding were below the minimum recommended for clinical use (5.9-7.8 MPa). There was no difference between indirect and direct bonding techniques. The lowest ARI scores (0-1) were observed in both self-etching and BO groups. Further clinical studies are needed to compare in vivo results.
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Affiliation(s)
- Angelica Iglesias
- Department of Orthodontics, Universitat Internacional de Catalunya, 08195 Barcelona, Spain; (A.I.); (T.F.); (J.M.); (M.A.)
| | - Teresa Flores
- Department of Orthodontics, Universitat Internacional de Catalunya, 08195 Barcelona, Spain; (A.I.); (T.F.); (J.M.); (M.A.)
| | - Javier Moyano
- Department of Orthodontics, Universitat Internacional de Catalunya, 08195 Barcelona, Spain; (A.I.); (T.F.); (J.M.); (M.A.)
| | - Montserrat Artés
- Department of Orthodontics, Universitat Internacional de Catalunya, 08195 Barcelona, Spain; (A.I.); (T.F.); (J.M.); (M.A.)
| | - Francisco Javier Gil
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, 08195 Barcelona, Spain;
| | - Andreu Puigdollers
- Department of Orthodontics, Universitat Internacional de Catalunya, 08195 Barcelona, Spain; (A.I.); (T.F.); (J.M.); (M.A.)
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11
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Yetkin D, Sayar G. Effect of Fluoride Releasing Bonding Materials on Shear Bond Strength of Orthodontic Brackets. Turk J Orthod 2020; 33:52-58. [PMID: 32284899 DOI: 10.5152/turkjorthod.2020.19052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 08/25/2019] [Indexed: 11/22/2022]
Abstract
Objective The aim of the present study was to compare the shear bond strength (SBS) of three different fluoride-releasing bonding agents with a conventional adhesive system. Methods Eighty-four extracted human premolar teeth were separated into four groups and embedded in acrylic molds consisting of 21 teeth in each group. Brackets were bonded with Transbond XT in group 1, Clearfil SE Protect Bond in group 2, LED Proseal in group 3, and Opalseal in group 4. After bracket bonding, the teeth were thermocycled 1000 times. SBS test was performed, and Adhesive Remnant Index (ARI) scores of the groups were assessed. Results One-way analysis of variance test was used to compare the significant differences between the groups. Chi-square and Fisher's exact tests were used to evaluate ARI scores. The Opalseal group showed the highest bond strength, but there was no statistically significant difference between the groups in SBS values (p=0.067). The results of ARI scores were statistically significant. Conclusions All bonding materials used in the study showed clinically sufficient bond strengths.
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Affiliation(s)
- Duygu Yetkin
- Department of Orthodontics, Bahcesehir University School of Dentistry, İstanbul, Turkey
| | - Gülşilay Sayar
- Department of Orthodontics, İstanbul Medipol University School of Dentistry, İstanbul, Turkey
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12
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Abdelaziz KM, Alshahrani I, Kamran MA, Alnazeh A. Debonding characteristics of orthodontic brackets subjected to intraoral stresses under different adhesive regimes: An in-vitro study. J Appl Biomater Funct Mater 2020; 18:2280800019899640. [PMID: 32238026 DOI: 10.1177/2280800019899640] [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] [Indexed: 11/15/2022] Open
Abstract
AIM To evaluate the effect of simulated intraoral hydraulic, thermal, and mechanical stresses on the debonding characteristics of orthodontic brackets under different adhesive regimes. MATERIALS AND METHODS Groups of pre-coated (G1) and non-coated (G2) orthodontic metal brackets were bonded onto the buccal surfaces of 96 premolars using etch-and-rinse (SG1, n = 24) and self-etch (SG2, n = 24) primers. Twelve specimens (C1) from each subgroup were subjected to early debonding resistance tests, while the other twelve (C2) were used to test delayed debonding resistance after exposure to conditions simulating intraoral hydraulic, thermal, and mechanical stresses. The debonding resistance of the brackets was evaluated using a universal testing machine and the debonding patterns were micro-visualized to determine the adhesive remnant indexes of subgroups of specimens. RESULTS Within each group, the etch-and-rinse primer (SG1) resulted in higher debonding resistance than self-etch primers (SG2) (p < 0.05), while there was no difference between non-stressed and stressed specimens (p > 0.05). Within each category of test specimens, there was no difference between pre-coated (G1) and non-coated (G2) brackets (p > 0.05). The tested specimens in all categories showed comparable adhesive remnant indexes. However, higher percentages of favorable scores (0 and 1) were obtained for all stressed specimens. CONCLUSIONS Short-term cumulative intraoral stresses have no adverse effect on the debonding values of either pre-coated or non-coated brackets when either etch-and-rinse or self-etch primer is used for bonding. Exposure of the bonded brackets to different types of stress reflects favorable debonding patterns.
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Affiliation(s)
- Khalid M Abdelaziz
- Department of Restorative Dental Sciences, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Ibrahim Alshahrani
- Department of Orthodontics and Pedodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Muhammad Abdullah Kamran
- Department of Orthodontics and Pedodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Abdullah Alnazeh
- Department of Orthodontics and Pedodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia
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Alaghehmad H, Mansouri E, Esmaili B, Bijani A, Nejadkarimi S, Rahchamani M. Effect of 0.12% chlorhexidine and zinc nanoparticles on the microshear bond strength of dentin with a fifth-generation adhesive. Eur J Dent 2019; 12:105-110. [PMID: 29657533 PMCID: PMC5883460 DOI: 10.4103/ejd.ejd_172_16] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective: In this study, we compared the effects of 0.12% chlorhexidine (CHX) and nano zinc oxide (NZO) on the microshear bond strength of dentin with a fifth-generation adhesive after acid etching. Materials and Methods: Forty molar teeth were randomly divided into four main groups based on dentin surface treatment technique (a) control (single bond 2); (b) NZO; (c) CHX; and (d) NZO + CHX. In each group, half of the samples underwent thermocycling, with no thermocycling in the other half. Then, failure mode was evaluated under a stereomicroscope. Statistical analysis was performed using t-test, two-way ANOVA, and Chi-squared test. Results: The mean microshear bond strength of the groups without thermocycling was more than that of the groups with thermocycling, but there were no statistically significant differences between the groups with and without thermocycling in pair-wise comparisons. Conclusion: Pretreatment with NZO and CHX separately and simultaneously had no effect on the microshear bond strength of a fifth-generation adhesive.
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Affiliation(s)
- Homayoon Alaghehmad
- Dental Materials Research Center, Department of Esthetic and Restorative Dentistry, Dental Materials Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Elham Mansouri
- Department of Esthetic and Restorative Dentistry, Babol University of Medical Sciences, Babol, Iran
| | - Behnaz Esmaili
- Dental Materials Research Center, Department of Esthetic and Restorative Dentistry, Dental Materials Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Ali Bijani
- Social Determinant of Health Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Sogol Nejadkarimi
- Department of Esthetic and Restorative Dentistry, Shahid beheshti University of Medical Sciences, Tehran, Iran
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Pandey SA, Lokhande MT, Gulve MN, Kolhe SJ, Aher GB. Shear bond strength of composite resin to resin-modified glass ionomer cement using 2-hydroxyethyl methacrylate-based and 2-hydroxyethyl methacrylate-free adhesive system. J Conserv Dent 2019; 22:292-295. [PMID: 31367116 PMCID: PMC6632623 DOI: 10.4103/jcd.jcd_456_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Background: Sandwich technique combines the properties of both composite resin and glass ionomer cement to make the most of the physical and esthetic properties of each material. Bonding agents improve the wettability of GIC surface and improves the bond between composite resin and GIC. The aim of this study was to evaluate and compare shear bond strength of composite resin to resin modified glass ionomer cement using HEMA-based and HEMA-free adhesive systems. An in vitro study. Materials and Methods: Total 30 disc-shaped samples were prepared with resin modified glass ionomer cement (RMGIC). Samples were divided into three groups, each group containing 10 samples. Group I (n=10): Nano-hybrid composite resin (NHCR) was bonded to RMGIC without any adhesive system. Group II (n=10): NHCR was bonded to RMGIC using hydroxyethylmethacrylate (HEMA)-based adhesive system. Group III (n=10): NHCR was bonded to RMGIC using HEMA-free adhesive system. The shear bond strength was tested using Universal testing Machine and the results were calculated using one way ANOVA and Post-Hoc test. Results: Maximum shear bond strength was recorded in group III where HEMA-free adhesive used with a mean value of 6.13±1.859 MPa followed by group II where HEMA-based adhesive used with mean value of 4.38±1.533 MPa. The control group showed least shear bond strength. Conclusion: Application of HEMA-free adhesive (OptiBond All-In-One) resulted in greater shear bond strength between RMGIC and composite resin than HEMA-based adhesive (Single bond Universal Adhesive).
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Affiliation(s)
- Srishti Anil Pandey
- Department of Conservative Dentistry and Endodontics, MGV's KBH Dental College, Nashik, Maharashtra, India
| | - Mohini Tukaram Lokhande
- Department of Conservative Dentistry and Endodontics, MGV's KBH Dental College, Nashik, Maharashtra, India
| | - Meenal Nitin Gulve
- Department of Conservative Dentistry and Endodontics, MGV's KBH Dental College, Nashik, Maharashtra, India
| | - Swapnil Janardan Kolhe
- Department of Conservative Dentistry and Endodontics, MGV's KBH Dental College, Nashik, Maharashtra, India
| | - Gayatri Balasaheb Aher
- Department of Conservative Dentistry and Endodontics, MGV's KBH Dental College, Nashik, Maharashtra, India
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Dergham CA, Khoury E, Ghoubril J. In vitro comparison of frictional forces of a new polycrystalline ceramic bracket versus metal-insert ceramic bracket before and after aging. Int Orthod 2019; 17:202-207. [PMID: 30981676 DOI: 10.1016/j.ortho.2019.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The purpose of this study was to compare the friction of two types of polycrystalline ceramic brackets before and after aging. METHODS A total of 60 second-upper right premolar brackets were divided into two groups: Clarity™ Advanced (3M Unitek, Monrovia, CA) and Clarity™ (3M Unitek). All brackets had a nominal 0.022-in slot size and a McLaughlin Bennett Travesi (MBT) prescription. Each bracket was submitted to a friction test, using the YL01 UTM universal testing machine (YLE GMBH, Germany) before and after thermocycling. All tests were carried out in the presence of artificial saliva, using .019×.025-in. rectangular stainless steel (SS) archwires (3M Unitek). Bracket slot surfaces were observed under an optical microscope (Olympus CX41, Tokyo, Japan) before and after aging. RESULTS Before aging, the Clarity Advanced group showed significantly lower friction than the Clarity group (P=0.011). After aging, the friction of the Clarity Advanced bracket decreased significantly (P<0.001), whereas the friction of the Clarity bracket increased significantly (P<0.001). The microscopic qualitative evaluation showed that the slot surfaces of all aged Clarity brackets revealed important pit corrosion when compared with the original brackets. CONCLUSIONS The new Clarity Advanced ceramic bracket shows good physical friction properties due to the various modifications added by the manufacturers.
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Affiliation(s)
- Carine Abi Dergham
- Faculty of Dentistry, Saint-Joseph University of Beirut, Orthodontic Department, Beirut, Lebanon
| | - Elie Khoury
- Faculty of Dentistry, Saint-Joseph University of Beirut, Orthodontic Department, Beirut, Lebanon.
| | - Joseph Ghoubril
- Faculty of Dentistry, Saint-Joseph University of Beirut, Orthodontic Department, Beirut, Lebanon
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González-Serrano C, Baena E, Fuentes MV, Albaladejo A, Míguez-Contreras M, Lagravère MO, Ceballos L. Shear bond strength of a flash-free orthodontic adhesive system after thermal aging procedure. J Clin Exp Dent 2019; 11:e154-e161. [PMID: 30805120 PMCID: PMC6383895 DOI: 10.4317/jced.55540] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 01/14/2019] [Indexed: 11/05/2022] Open
Abstract
Background The aim of this study was to compare the shear bond strength (SBS) of a flash-free and precoated orthodontic adhesive with a compomer orthodontic adhesive before and after thermocycling. The adhesive remnant index (ARI) was also determined for both adhesives. Material and Methods The adhesive remnant index (ARI) was also determined for both adhesives. Material and Methods: A total of 120 human premolars were randomly divided into two groups (n=60) according to the orthodontic adhesive used: APC Flash-Free Adhesive Coated Appliance System (APC FF) or Transbond PLUS Color Change Adhesive (TP), as control. A SBS test was performed and ARI value for each specimen was also assessed. Results were analyzed by two-way ANOVA and Tukey's Chi-square test (p<0.05). Results SBS values were significantly influenced by thermocycling (p<0.01). Neither the orthodontic adhesive nor the interaction between adhesive and thermocycling statistically affected SBS results (p>0.05). Conclusions APC FF and TP showed similar bond strength results. Thermocycling induced a significant decrease in SBS values for the two adhesives tested, without differences between 10,000 and 20,000 thermal cycles. Moreover, APC FF left less adhesive remnants on the enamel compared to TP. Key words:APC Flash-Free, APC cement, aging, orthodontics, resin cements.
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Affiliation(s)
- Carlos González-Serrano
- PhD Student, Area of Stomatology, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain
| | - Eugenia Baena
- Assistant Professor, Area of Stomatology, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain
| | - María-Victoria Fuentes
- Assistant Professor, Area of Stomatology, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain
| | - Alberto Albaladejo
- Associate Professor, Department of Surgery, Faculty of Medicine, University of Salamanca, Salamanca, Spain
| | - Manuel Míguez-Contreras
- Assistant Professor, Department of Stomatology, Health Sciences Faculty, Alfonso X el Sabio, Madrid, Spain
| | - Manuel O Lagravère
- Associate Professor, School of Dentistry, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Canada
| | - Laura Ceballos
- Full Professor, Area of Stomatology, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain
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Grünheid T, Larson BE. A comparative assessment of bracket survival and adhesive removal time using flash-free or conventional adhesive for orthodontic bracket bonding: A split-mouth randomized controlled clinical trial. Angle Orthod 2018; 89:299-305. [PMID: 30230375 DOI: 10.2319/030918-195.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To compare bracket survival and adhesive removal time between a flash-free and a conventional adhesive for orthodontic bracket bonding. MATERIALS AND METHODS Forty-five consecutive patients had their maxillary incisors, canines, and premolars bonded with ceramic brackets using a flash-free adhesive (APC Flash-Free Adhesive, 3M Unitek, Monrovia, Calif) on one side and a conventional adhesive (APCII Adhesive, 3M Unitek) on the other side. The side allocation was randomized. Bracket failure was recorded at 4-week intervals. The adhesive remnant index (ARI) was scored on debond and adhesive removal timed to the nearest second. The primary outcome was adhesive removal time per quadrant. Secondary outcomes were bracket failure rate, time to first-time failure of a bracket, and ARI score on debond. Paired t-tests were used to compare adhesive removal times and ARI scores between the adhesives with P < .05 considered statistically significant. RESULTS Bracket failure rates were 4.3% for the flash-free adhesive and 1.9% for the conventional adhesive, with mean times to first-time failure of 31 weeks for the flash-free adhesive and 42 weeks for the conventional adhesive; neither failure rates nor times to first failure were significantly different. Although the flash-free adhesive left significantly more adhesive on the tooth surface after debonding, the adhesive removal times were 22.2% shorter than with the conventional adhesive. CONCLUSIONS Bracket survival with the flash-free adhesive was equivalent to the conventional adhesive when ceramic brackets were bonded. Adhesive removal was significantly faster when using the flash-free adhesive, which may result in time savings of more than 20% compared with the conventional adhesive.
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Esposito CL, Kirilov P, Roullin VG. Organogels, promising drug delivery systems: an update of state-of-the-art and recent applications. J Control Release 2018; 271:1-20. [DOI: 10.1016/j.jconrel.2017.12.019] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/15/2017] [Accepted: 12/17/2017] [Indexed: 12/23/2022]
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Arash V, Naghipour F, Ravadgar M, Karkhah A, Barati MS. Shear bond strength of ceramic and metallic orthodontic brackets bonded with self-etching primer and conventional bonding adhesives. Electron Physician 2017; 9:3584-3591. [PMID: 28243410 PMCID: PMC5308498 DOI: 10.19082/3584] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 07/21/2016] [Indexed: 11/29/2022] Open
Abstract
Introduction Adult patients typically require high-quality orthodontic treatment for ceramic brackets, but some clinicians remain concerned about the bond strength of these brackets. Therefore, the aim of this study was to determine the shear bond strength and de-bonding characteristics of metallic and ceramic brackets bonded with two types of bonding agents. Methods In an experimental study done in 2013 in Babol, Iran, 120 extracted human maxillary premolar teeth were randomly divided into four groups as follows: HM group: metallic bracket/conventional bonding agent; SM group: metallic bracket/Transbond self-etching primer; HC group: ceramic bracket/conventional bonding agent; SC group: ceramic bracket/Transbond self-etching primer. Twenty-four hours after thermocycling (1000 cycle, 5 °C–55 °C), the shear bond strength values were measured. The amount of resin remaining on the tooth surface (adhesive remnant index: ARI) was determined under a stereomicroscope. Enamel detachment index was evaluated under a scanning electron microscope. To perform statistical analysis, ANOVA, Kruskal–Wallis, and Tukey post-hoc tests were applied. The level of significance was set at p <0.05. Results The mean shear bond strength values (MPa ± SD) were group HM=12.59, group SM=11.15, group HC=7.7, and group SC=7.41. Bond strength differences between groups HM and SM (p=0.063) and between HC and SC (p=0.091) were not statistically significant. There were significant differences between HM and HC and between SM and SC groups (p < 0.05). Insignificant differences were found in ARI among all groups. Conclusion Our findings indicated that the metallic brackets had higher bond strengths in comparison with ceramic brackets. In addition, self-etching primer was able to produce fewer bonds compared with the conventional technique. Many samples showed the bracket-adhesive interface failure or failure inside the adhesive.
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Affiliation(s)
- Valiollah Arash
- Orthodontist, Assistant Professor, Dental Material Research Center, Dental Faculty, Babol University of Medical Sciences, Babol, Iran
| | - Fatemeh Naghipour
- General Dentist, Faculty Member, Dental Material Research Center, Dental Faculty, Babol University of Medical Sciences, Babol, Iran
| | - Mehdi Ravadgar
- Orthodontist, Faculty Member, Department of Operative Dentistry, Dental Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ahmad Karkhah
- General Practitioner, Faculty Member, Cellular and Molecular Biology Research Center, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Mohammad Saleh Barati
- Orthodontist, Faculty Member, Dental Material Research Center, Dental Faculty, Babol University of Medical Sciences, Babol, Iran
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Yousef ME, Marzouk ES, Ismail HA, Aboushelib MN. Comparative evaluation of the shear bond strength of recycled ceramic brackets using three methods: An in vitro study. J World Fed Orthod 2016. [DOI: 10.1016/j.ejwf.2016.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Kasraei S, Yarmohammadi E, Ghazizadeh MV. Microshear Bond Strength of OptiBond All-in-One Self-adhesive Agent to Er:YAG Laser Treated Enamel After Thermocycling and Water Storage. J Lasers Med Sci 2016; 7:152-158. [PMID: 28144434 DOI: 10.15171/jlms.2016.26] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: This study aimed to compare the microshear bond strength of composite to enamel treated with Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser using a self-etch one step bonding agent. Methods: Seventy-six enamel surfaces were prepared from 38 sound human third molar teeth. Specimens were randomly divided into four groups of 18. The enamel surface in half the specimens was irradiated with Er:YAG laser. One extra specimen from each group was evaluated under a scanning electron microscope (SEM). Composite micro-cylinders were bonded to the specimen surfaces using OptiBond All-In-One (OB) adhesive agent and stored in distilled water for 24 hours. Half the specimens were thermocycled (2000 cycles) and stored in distilled water at 37°C for three months (TW). The microshear bond strength of composite to enamel was measured using a universal testing machine at a crosshead speed of 1 mm/min. The fractured surfaces were evaluated under a stereomicroscope at ×40 magnification to determine the mode of failure. Data were analyzed using repeated measures analysis of variance (ANOVA) and t test. Results: The mean values (±standard deviation) were 17.96 ± 2.92 MPa in OB group, 22.29 ± 4.25 MPa in laser + OB group, 18.11 ± 3.52 MPa in laser + OB + TW group and 9.42 ± 2.47 MPa in OB + TW group. Repeated measures ANOVA showed that laser irradiation increased the microshear bond strength (P < 0.001). Bond strength decreased when the samples were thermocycled and stored for three months (P < 0.001). The interaction effect of water storage and laser treatment on bond strength was significant (P < 0.05). Conclusion: Enamel surface preparation with Er:YAG laser is recommended to enhance the durability of the bond of self-etch bonding systems to enamel.
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Affiliation(s)
- Shahin Kasraei
- Dental Research Center, Department of Restorative Dentistry, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ebrahim Yarmohammadi
- Department of Restorative Dentistry, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
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Flores T, Mayoral JR, Giner L, Puigdollers A. Comparison of enamel-bracket bond strength using direct- and indirect-bonding techniques with a self-etching ion releasing S-PRG filler. Dent Mater J 2015; 34:41-7. [PMID: 25748457 DOI: 10.4012/dmj.2014-138] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This in vitro study compared the shear bond strength (SBS) and adhesive remnant index (ARI) of two systems for bonding orthodontic brackets to enamel. The first system involved a self-etching primer (Beauty Ortho Bond, BO) containing surface pre-reacted glass filler. The second involved a primer applied with phosphoric acid etching (Transbond XT, TX). Ninety-six extracted human premolars were divided into eight groups: Group I (TX/direct bonding), Group II (TX/indirect bonding), Group III (BO/direct bonding), and Group IV (BO/indirect bonding). Groups V-VIII were identical to Groups I-IV, respectively, but were also subjected to 1,500 thermal cycles between 5 and 55°C. ARI was scored by binocular microscopy. SBS was analyzed by three-way ANOVA and the Bonferroni test. ARI was analyzed by the chi-squared test. The BO groups showed lower SBS and ARI results than the TX groups. SBS was significantly influenced by the primer material, bonding technique, and thermal cycling.
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Affiliation(s)
- Teresa Flores
- Department of Orthodontics, Universitat Internacional de Catalunya
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Mews L, Kern M, Ciesielski R, Fischer-Brandies H, Koos B. Shear bond strength of orthodontic brackets to enamel after application of a caries infiltrant. Angle Orthod 2014; 85:645-50. [PMID: 25157972 DOI: 10.2319/013014-82.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To examine differences in the shear bond strength of orthodontic brackets on differently mineralized enamel surfaces after applying a caries infiltrant or conventional adhesive. MATERIALS AND METHODS A total of 320 bovine incisors were assigned to eight pretreated groups, and the shear force required for debonding was recorded. Residual adhesive was evaluated by light microscopy using the adhesive remnant index. Statistical analysis included Kolmogorov-Smirnov, analysis of variance (ANOVA), and Scheffé tests. RESULTS The highest bond strength (18.8 ± 4.4 MPa) was obtained after use of the caries infiltrant. More residual adhesive and fewer enamel defects were observed on infiltrated enamel surfaces. Brackets on demineralized enamel produced multiple enamel defects. CONCLUSIONS Acceptable bond strengths were obtained with all material combinations. A caries-infiltrant applied before bracket fixation has a protective effect, especially on demineralized enamel.
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Affiliation(s)
- Laura Mews
- a Postdoctoral student, Department of Orthodontics, Christian-Albrechts University, Kiel, Germany
| | - Matthias Kern
- b Professor and Chair, Department of Prosthodontics, Propaedeutics and Dental Materials, Christian-Albrechts University, Kiel, Germany
| | - Robert Ciesielski
- c Research Assistant, Department of Orthodontics, Christian-Albrechts University, Kiel, Germany
| | - Helge Fischer-Brandies
- d Professor and Chair, Department of Orthodontics, Christian-Albrechts University, Kiel, Germany
| | - Bernd Koos
- e Assistant Professor, Department of Orthodontics, Christian-Albrechts University, Kiel, Germany
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Morresi AL, D'Amario M, Capogreco M, Gatto R, Marzo G, D'Arcangelo C, Monaco A. Thermal cycling for restorative materials: Does a standardized protocol exist in laboratory testing? A literature review. J Mech Behav Biomed Mater 2014; 29:295-308. [DOI: 10.1016/j.jmbbm.2013.09.013] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 09/15/2013] [Accepted: 09/21/2013] [Indexed: 10/26/2022]
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Ha JY, Son JS, Kim YK, Kim KH, Kwon TY. Effect of heat treatment of dental zirconia ceramic treated with three different primers on the bonding durability of resin cement. Macromol Res 2012. [DOI: 10.1007/s13233-013-1003-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Davari A, Yassaei S, Karandish M, Zarghami F. In vitro evaluation of microleakage under ceramic and metal brackets bonded with LED and plasma arc curing. J Contemp Dent Pract 2012; 13:644-9. [PMID: 23250168 DOI: 10.5005/jp-journals-10024-1202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIM The aim of the present study was to evaluate these two high intensity light curing units regarding microleakage beneath metal and ceramic brackets. MATERIALS AND METHODS A total of 60 freshly extracted human premolar teeth were randomly divided into four groups of 15 samples; group I: Metal bracket + LED cured, group II: Ceramic bracket + LED cured, group III: Metal bracket + plasma arc cured, group IV: Ceramic bracket + plasma arc cured. After photopolymerization, the teeth were immersed in water and thermocycled (500 cycles between 5 and 55). Specimens were further sealed with nail varnish and stained with 5% basic fuchsin for 24 hours. All of the teeth were sectioned with two parallel longitudinal occlusogingival cuts and examined under a stereomicroscope. The microleakage was measured with a digital caliper and scored from 0 to 3 for marginal microleakage at the bracket-adhesive and adhesive-enamel interfaces from both the occlusal and gingival margins. RESULTS Microleakage was detected in all groups. The plasma arc cured group showed less microleakage than light emitting diode (LED) cured in all samples at the enamel-adhesive interface at the gingival margin (ceramic brackets, p = 0.009 and metal brackets, p = 0.005). The plasma arc cured samples showed less microleakage than LED cured in metal brackets at the adhesive-brackets interface at the occlusal margin (p = 0.033). While curing with an LED unit, ceramic brackets displayed significantly less microleakage than metal ones at the gingival margin of adhesive-enamel interface (p = 0.013). The gingival margin in all groups exhibited higher microleakage compared with those observed in occlusal sides in all sample groups (p < 0.001). CONCLUSION 1. LED units cause more microleakage than plasma arc units. 2. In all groups the microleakage at the gingival margin is greater than the occlusal margin. CLINICAL SIGNIFICANCE The microleakage formation permits the passage of bacteria and oral fluids initiating white spot lesions beneath the bracket base.
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Affiliation(s)
- Abdolrahim Davari
- Department of Operative Dentistry, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Shear bond strengths of seven self-etching primers after thermo-cycling. J Orofac Orthop 2011; 72:371-80. [DOI: 10.1007/s00056-011-0041-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Accepted: 06/15/2011] [Indexed: 10/17/2022]
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Kwon TY, Meina H, Antoszewska J, Park HS. Direct and indirect bonding of wire retainers to bovine enamel using three resin systems: shear bond strength comparisons. Korean J Orthod 2011. [DOI: 10.4041/kjod.2011.41.6.447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Tae-Yub Kwon
- Associate Professor, Department of Dental Biomaterials, School of Dentistry, Kyungpook National University, Korea
| | - Hu Meina
- Postgraduate Student, Department of Orthodontics, School of Dentistry, Kyungpook National University, Korea
| | - Joana Antoszewska
- Professor, Department of Dentofacial Orthopedics and Orthodontics, Wroclaw Medical University, Poland
| | - Hyo-Sang Park
- Professor and Clinical Director, Department of Orthodontics, School of Dentistry, Kyungpook National University, Korea
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Dentin and enamel bond strengths of dual-cure composite luting agents used with dual-cure dental adhesives. J Dent 2009; 37:59-64. [DOI: 10.1016/j.jdent.2008.09.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 09/04/2008] [Accepted: 09/08/2008] [Indexed: 11/23/2022] Open
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