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Santos ALC, Correr-Sobrinho L, Tsuzuki FM, Facury Ferraz AG, Neves JG, Sinhoreti MAC, Franco EM, Costa AR. Effect of adding arginine at different concentrations to experimental orthodontic resins: an in vitro study. Braz Oral Res 2024; 38:e078. [PMID: 39258631 PMCID: PMC11376598 DOI: 10.1590/1807-3107bor-2024.vol38.0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 03/03/2024] [Indexed: 09/12/2024] Open
Abstract
The aim of this study was to assess the effect of adding arginine at different concentrations to commercial and experimental orthodontic resins on shear bond strength (SBS), as well as on the antimicrobial activity of arginine against S. mutans. Metal brackets were bonded onto the surface of 120 bovine incisors using Transbond, OrthoCem, and an experimental resin (ER), adding 0, 2.5, 5, and 7 wt.% of arginine. The SBS test was performed in deionized water at 37 ºC for 24 h, at 0.5 mm/min. SBS test results were subjected to two-way ANOVA and Tukey's test (α = 0.05). CFU/mL data (antimicrobial assessment) were assessed by Kruskal-Wallis and Dunn's tests (α = 0.05). No statistical difference between the resins was observed in untreated groups (p > 0.05). The addition of arginine at 2.5% (27.7 MPa) and 5% (29.0 MPa) increased the SBS of Transbond when compared (p < 0.05) to OrthoCem (18.5 and 15.6 MPa, respectively) and ER (16.3 and 18.1 MPa, respectively). Arginine at 7% improved the SBS of Transbond (24.1 MPa) and ER (21.0 MPa), which was statistically higher (p < 0.05) than OrthoCem (12.6 MPa). OrthoCem did not show a statistically significant difference at the three concentrations of arginine (p > 0.05). The addition of arginine to resins reduced the count of S. mutans (p < 0.05). As for ER, all concentrations of arginine significantly decreased CFU/mL (p < 0.05). Among commercial resins, only 7% of arginine significantly reduced CFU/mL. The addition of arginine did not interfere with the bond strength and demonstrated antibacterial activity against S. mutans.
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Affiliation(s)
| | - Lourenço Correr-Sobrinho
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP, Brazil
| | - Fernanda Midori Tsuzuki
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP, Brazil
| | - Anália Gabriela Facury Ferraz
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP, Brazil
| | - José Guilherme Neves
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP, Brazil
| | - Mário Alexandre Coelho Sinhoreti
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP, Brazil
| | - Eduardo Martinelli Franco
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Microbiology, Piracicaba, SP, Brazil
| | - Ana Rosa Costa
- Fundação Hermínio Ometto, Department of Orthodontics, Araras, SP, Brazil
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Tristán-López JD, Niño-Martínez N, Kolosovas-Machuca ES, Patiño-Marín N, De Alba-Montero I, Bach H, Martínez-Castañón GA. Application of Silver Nanoparticles to Improve the Antibacterial Activity of Orthodontic Adhesives: An In Vitro Study. Int J Mol Sci 2023; 24:ijms24021401. [PMID: 36674917 PMCID: PMC9861692 DOI: 10.3390/ijms24021401] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/29/2022] [Accepted: 01/03/2023] [Indexed: 01/12/2023] Open
Abstract
There is a significant change in the bacterial plaque populations in the oral cavity during and after orthodontic treatment. Numerous studies have demonstrated that 2−96% of patients could increase the risk of white spot lesions. Streptococcus mutans and Lactobacilli ssp. are responsible for these white spot lesions. In this work, silver nanoparticles (AgNPs) with a diameter of 11 nm and dispersed in water were impregnated onto three different commercial orthodontic adhesives at 535 μg/mL. The shear bond strength (SBS) was assessed on 180 human premolars and metallic brackets. The premolars were divided into six groups (three groups for the commercial adhesives and three groups for the adhesives with AgNPs). All the groups were tested for their bactericidal properties, and their MIC, MBC, and agar template diffusion assays were measured. After adding AgNPs, the SBS was not significantly modified for any adhesive (p > 0.05), and the forces measured during the SBS did not exceed the threshold of 6 to 8 MPa for clinical acceptability in all groups. An increase in the bactericidal properties against both S. mutans and L. acidophilus was measured when the adhesives were supplemented with AgNPs. It was concluded that AgNPs can be supplement commercial orthodontic adhesives without modifying their mechanical properties with improved bactericidal activity.
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Affiliation(s)
- Jesús-David Tristán-López
- Doctorado Institucional en Ingeniería y Ciencia de Materiales, Universidad Autonoma de San Luis Potosi, Sierra Leona No. 550 Col. Lomas 2da. Sección, C. P., San Luis Potosí 78210, Mexico
| | - Nereyda Niño-Martínez
- Facultad de Ciencias, Universidad Autonoma de San Luis Potosi, Av. Parque Chapultepec 1570, Privadas del Pedregal, C. P., San Luis Potosí 78295, Mexico
| | - Eleazar-Samuel Kolosovas-Machuca
- Facultad de Ciencias, Universidad Autonoma de San Luis Potosi, Av. Parque Chapultepec 1570, Privadas del Pedregal, C. P., San Luis Potosí 78295, Mexico
| | - Nuria Patiño-Marín
- Facultad de Estomatología, Universidad Autonoma de San Luis Potosi, Av. Dr. Manuel Nava No. 2, Zona Universitaria, C. P., San Luis Potosí 78290, Mexico
| | - Idania De Alba-Montero
- Facultad de Ciencias, Universidad Autonoma de San Luis Potosi, Av. Parque Chapultepec 1570, Privadas del Pedregal, C. P., San Luis Potosí 78295, Mexico
| | - Horacio Bach
- Faculty of Medicine, Division of Infectious Diseases, University of British Columbia, Vancouver, BC V6H3Z6, Canada
| | - Gabriel-Alejandro Martínez-Castañón
- Facultad de Estomatología, Universidad Autonoma de San Luis Potosi, Av. Dr. Manuel Nava No. 2, Zona Universitaria, C. P., San Luis Potosí 78290, Mexico
- Correspondence: ; Tel./Fax: +52-444-8262300
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Kavousinejad S, Hosseinzadeh Nik T, Saffar Shahroudi A. Comparison of microleakage and shear bond strength of ribbon and twisted wire retainers bonded on human mandibular incisors with two different types of adhesives with and without primer: An in-vitro study. Int Orthod 2022; 20:100693. [PMID: 36243617 DOI: 10.1016/j.ortho.2022.100693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/05/2022] [Accepted: 09/10/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND OBJECTIVES Shear bond strength and microleakage are the success factors of fixed retainers. Recently, primer-free composites were introduced to reduce chair time. The main objectives of this study were to compare the shear bond strength (SBS) and microleakage of GC Ortho ConnectTM Flow (OF) and TransbondTM XT (TXT) with two types of common retainer wires (0.0175-inch twisted wire and 0.028×.0.008-inch ribbon dead soft wire retainers). The secondary objectives of the study were to compare enamel-adhesive interface and wire-adhesive interface microleakages. MATERIALS AND METHODS This in vitro study was conducted on 132 human mandibular incisors (96 for bond strength and 36 for microleakage). The teeth were randomly divided into four groups for use of ribbon and twisted wires with OF and TXT adhesives. The bond strength was measured by a universal testing machine. Microleakage was evaluated by the dye penetration test using 0.05% fuchsine. Data were analysed by two-way ANOVA (alpha=0.05). RESULTS No significant difference was noted in bond strength among the four groups (P>0.05). However, the microleakage of OF was significantly higher than that of TXT at both the enamel-adhesive and wire-adhesive interfaces (P<0.001). The microleakage at the wire-adhesive and enamel-adhesive interface was not significantly different in groups 1 and 4 and was significant in group 2 and 3. CONCLUSION Type of adhesive significantly affected the microleakage, and OF resulted in higher microleakage than TXT at both the enamel-adhesive and wire-adhesive interfaces. Type of wire had no significant effect on microleakage. Although OF showed comparable SBS to TXT, its higher microleakage may compromise its successful long-term clinical service.
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Affiliation(s)
- Shahab Kavousinejad
- Department of Orthodontics, Tehran University of Medical Sciences, Tehran, Iran
| | - Tahereh Hosseinzadeh Nik
- Department of Orthodontics, Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Atefe Saffar Shahroudi
- Department of Orthodontics, Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
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Peloso RM, Cotrin P, Oliveira RCGD, Oliveira RCGD, Valarelli FP, Freitas KMS. Evaluation of enamel deproteinization in bond strength of orthodontic accessories: A split-mouth randomized clinical trial. Am J Orthod Dentofacial Orthop 2022; 162:443-450. [DOI: 10.1016/j.ajodo.2022.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 05/01/2022] [Accepted: 05/01/2022] [Indexed: 11/26/2022]
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Hu B, Hu Y, Li X, Gao J, Sun R, Zhan D, Sano H, Fu J. Shear bond strength of different bonding agents to orthodontic metal bracket and zirconia. Dent Mater J 2022; 41:749-756. [PMID: 36070928 DOI: 10.4012/dmj.2022-028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study aimed to evaluate the shear bond strength (SBS) of four bonding agents used to bond metal brackets to zirconia under different storage conditions. Four bonding agents were used [FLC: (Fuji ORTHO LC), XT: (TransbondTM XT), RUC-SBU: (Rely XTM Ultimate Clicker Adhesive Resin Cement+Single Bond Universal), and RUC-GBU: (Rely XTM Ultimate Clicker Adhesive Resin Cement+Gluma Bond Universal)] to bond two types of metal brackets (PT/3M) to zirconia surfaces, and they were stored in water at 37ºC for 24 h or thermocycling for 3,000 cycles. The SBS data of RUC-SBU and RUC-GBU using PT brackets were significantly higher than those of 3M brackets before and after thermocycling. It could be concluded that RUC-SBU and RUC-GBU could offer sufficient bond strength between metal brackets and zirconia for the short term compared with FLC and XT. The design of brackets can significantly affect the bond strength to zirconia.
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Affiliation(s)
- Bo Hu
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Yichun Hu
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Xiangyi Li
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Jiayang Gao
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Ruitong Sun
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Desong Zhan
- Department of Dental Materials Science, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Hidehiko Sano
- Department of Restorative Dentistry, Division of Oral Health Science, Faculty of Dental Medicine, Hokkaido University
| | - Jiale Fu
- Department of Dental Materials Science, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
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Geraldeli S, Maia Carvalho LDA, de Souza Araújo IJ, Guarda MB, Nascimento MM, Bertolo MVL, Di Nizo PT, Sinhoreti MAC, McCarlie VW. Incorporation of Arginine to Commercial Orthodontic Light-Cured Resin Cements-Physical, Adhesive, and Antibacterial Properties. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4391. [PMID: 34442914 PMCID: PMC8401166 DOI: 10.3390/ma14164391] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 11/30/2022]
Abstract
(1) Background: The amino acid arginine is now receiving great attention due to its potential anti-caries benefits. The purpose of this in vitro study was to evaluate the shear bond strength (SBS), ultimate tensile strength (UTS), and antimicrobial potential (CFU) of two arginine-containing orthodontic resin cements. (2) Methods: Forty bovine incisors were separated into four groups (n = 10): Orthocem, Orthocem + arginine (2.5 wt%), Transbond XT, and Transbond XT + arginine (2.5 wt%). The brackets were fixed to the flat surface of the enamel, and after 24 h the SBS was evaluated using the universal testing machine (Instron). For the UTS test, hourglass samples (n = 10) were made and tested in a mini-testing machine (OM-100, Odeme). For the antibacterial test (colony forming unit-CFU), six cement discs from each group were made and exposed to Streptococcus mutans UA159 biofilm for 7 days. The microbiological experiment was performed by serial and triplicate dilutions. The data from each test were statistically analyzed using a two-way ANOVA, followed by Tukey's test (α = 0.05). (3) Results: The enamel SBS mean values of Transbond XT were statistically higher than those of Orthocem, both with and without arginine (p = 0.02033). There was no significant difference in the SBS mean values between the orthodontic resin cements, either with or without arginine (p = 0.29869). The UTS of the Transbond XT was statistically higher than the Orthocem, but the addition of arginine at 2.5 wt% did not influence the UTS for either resin cement. The Orthocem + arginine orthodontic resin cement was able to significantly reduce S. mutans growth, but no difference was observed for the Transbond XT (p = 0.03439). (4) Conclusion: The incorporation of arginine to commercial orthodontic resin cements may be an efficient preventive strategy to reduce bacterial growth without compromising their adhesive and mechanical properties.
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Affiliation(s)
- Saulo Geraldeli
- Department of General Dentistry, Division of Biomedical Materials, School of Dental Medicine, East Carolina University, Greenville, NC 27834-4354, USA
| | - Lucas de Almeida Maia Carvalho
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas 13414-903, SP, Brazil; (L.d.A.M.C.); (I.J.d.S.A.); (M.B.G.); (M.V.L.B.); (P.T.D.N.); (M.A.C.S.)
| | - Isaac Jordão de Souza Araújo
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas 13414-903, SP, Brazil; (L.d.A.M.C.); (I.J.d.S.A.); (M.B.G.); (M.V.L.B.); (P.T.D.N.); (M.A.C.S.)
| | - Maurício Bottene Guarda
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas 13414-903, SP, Brazil; (L.d.A.M.C.); (I.J.d.S.A.); (M.B.G.); (M.V.L.B.); (P.T.D.N.); (M.A.C.S.)
| | - Marcelle M. Nascimento
- Department of Restorative Dental Sciences, College of Dentistry, University of Florida, Gainesville, FL 32610-0412, USA;
| | - Marcus Vinícius Loureiro Bertolo
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas 13414-903, SP, Brazil; (L.d.A.M.C.); (I.J.d.S.A.); (M.B.G.); (M.V.L.B.); (P.T.D.N.); (M.A.C.S.)
| | - Paolo Túlio Di Nizo
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas 13414-903, SP, Brazil; (L.d.A.M.C.); (I.J.d.S.A.); (M.B.G.); (M.V.L.B.); (P.T.D.N.); (M.A.C.S.)
| | - Mário Alexandre Coelho Sinhoreti
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas 13414-903, SP, Brazil; (L.d.A.M.C.); (I.J.d.S.A.); (M.B.G.); (M.V.L.B.); (P.T.D.N.); (M.A.C.S.)
| | - V. Wallace McCarlie
- Department of Pediatric Dentistry and Orthodontics, Division of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, East Carolina University, Greenville, NC 27834-4354, USA;
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Veiga Jardim AF, Azevedo MN, Souza JB, Freitas JC, Estrela C. Evaluation of bond strength of molar orthodontic tubes subjected to reinforcement with flowable and bonding resins. J Orofac Orthop 2020; 81:350-359. [PMID: 32500218 DOI: 10.1007/s00056-020-00235-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 03/30/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE The goal was to evaluate the adhesive shear bond strength (SBS) of orthodontic tubes bonded to molar teeth and reinforced with Transbond XT (3M Science, St. Paul, MN, USA) and flowable resin. MATERIALS AND METHODS In all, 120 molar teeth, previously extracted from patients with a mean age of 30 were included. Orthodontic molar tubes were bonded on the vestibular surface of these teeth with one of two types of adhesive (Transbond XT [3M Science, St. Paul, MN, USA] or Orthobond [Morelli, Sorocaba, Brazil]). Each of these groups was subsequently divided into four further groups: control and those subjected to the use of resin reinforcement on the occlusal surface of the bonded tubes with one of three materials (Transbond XT, Tetric N Flow [Ivoclar Vivadent, Ellwangen, Germany], Z 350 Flow [3M Science, St. Paul, MN, USA]). SBS and adhesive remnant index tests were performed to evaluate bond strength and type of fracture of the tubes bonded with the different methods. RESULTS The use of resin reinforcement with Transbond XT significantly increased the SBS of tubes bonded with both materials. Flowable composites did not increase the SBS when used as a reinforcement. Less than 50% of the adhesive remained on the vestibular surface after the SBS test in most samples of all groups. CONCLUSION Transbond XT orthodontic adhesive and Orthobond adhesive had appropriate bonding strengths for clinical use. Furthermore, the use of a resinous reinforcement with Transbond XT significantly increased the SBS of tubes bonded. However this technique with flowable adhesives (Tetric N Flow and Z350 Flow) did not significantly increase SBS when orthodontic tubes were bonded with Transbond XT or Orthobond.
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Affiliation(s)
- Alexandre Fausto Veiga Jardim
- Department of Stomatological Sciences, School of Dentistry, Universidade Federal de Goiás, Goiânia, Brazil.
- , Alameda Coronel Eugênio Jardim, 129. Setor Marista, 74175-100, Goiânia, GO, Brazil.
| | - Monarko Nunes Azevedo
- Department of Stomatological Sciences, School of Dentistry, Universidade Federal de Goiás, Goiânia, Brazil
| | - João Batista Souza
- Department of Stomatological Sciences, School of Dentistry, Universidade Federal de Goiás, Goiânia, Brazil
| | - Jairo Curado Freitas
- Department of Stomatological Sciences, School of Dentistry, Universidade Federal de Goiás, Goiânia, Brazil
| | - Carlos Estrela
- Department of Stomatological Sciences, School of Dentistry, Universidade Federal de Goiás, Goiânia, Brazil
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Goto S, Hasegawa Y, Miyagawa Y, Endo T. Effects of contact compressive force on bracket bond strength and adhesive thickness : Study using orthodontic resins with different viscosities. J Orofac Orthop 2019; 81:79-88. [PMID: 31853585 DOI: 10.1007/s00056-019-00202-9] [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] [Received: 03/29/2019] [Accepted: 09/27/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE To assess the effect of the contact compressive force to seat orthodontic brackets on shear bond strength (SBS) and adhesive thickness using adhesive resins with different viscosities. METHODS A total of 184 premolars were divided equally into eight groups of 23. Transbond XT and Beauty Ortho Bond paste viscous self-etching adhesive systems were used with contact compressive forces of 0.5, 1, 2, and 3 N (groups 1-4 and groups 5-8, respectively) via a push-pull tension gauge. SBS and adhesive thickness were measured in each adhesive system for each contact compressive force. RESULTS Significant differences existed in the SBSs between the adhesive systems for each contact compressive force and the SBSs were significantly higher in groups 1 (17 MPa) and 2 (16 MPa) than in groups 3 (14 MPa) and 4 (13 MPa). Significant differences existed for the adhesive thickness between the adhesive systems for the three contact compressive forces less than 3 N. The adhesive in group 1 (0.184 mm) was significantly thicker than that in groups 2-4 (from 0.098 to 0.129 mm). In groups 2 (0.129 mm) and 3 (0.121 mm) it was thicker than in group 4 (0.098 mm), and in group 5 (0.119 mm) it was thicker than in groups 6-8 (from 0.087 to 0.088 mm). CONCLUSIONS The high-viscosity adhesive Transbond XT exhibited higher SBSs than the low-viscosity Beauty Ortho Bond paste. For the adhesive Transbond XT, lower contact compressive forces produced greater adhesive thicknesses and higher SBSs. For the Beauty Ortho Bond paste, no significant changes in the adhesive thickness or SBS values were observed for contact compressive forces greater than 0.5 N.
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Affiliation(s)
- Sho Goto
- Orthodontics and Dentofacial Orthopedics, Field of Oral and Maxillofacial Growth and Development, Course of Clinical Science, The Nippon Dental University Graduate School of Life Dentistry at Niigata, 1-8 Hamaura-cho, 951-8580, Chuo-ku, Niigata, Japan.
| | - Yuh Hasegawa
- Orthodontics and Dentofacial Orthopedics, Field of Oral and Maxillofacial Growth and Development, Course of Clinical Science, The Nippon Dental University Graduate School of Life Dentistry at Niigata, 1-8 Hamaura-cho, 951-8580, Chuo-ku, Niigata, Japan.,Department of Orthodontics, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamaura-cho, 951-8580, Chuo-ku, Niigata, Japan
| | - Yukio Miyagawa
- The Nippon Dental University Graduate School of Life Dentistry at Niigata, 1-8 Hamaura-cho, 951-8580, Chuo-ku, Niigata, Japan
| | - Toshiya Endo
- Orthodontics and Dentofacial Orthopedics, Field of Oral and Maxillofacial Growth and Development, Course of Clinical Science, The Nippon Dental University Graduate School of Life Dentistry at Niigata, 1-8 Hamaura-cho, 951-8580, Chuo-ku, Niigata, Japan.,Department of Orthodontics, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamaura-cho, 951-8580, Chuo-ku, Niigata, Japan
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Atilla AO, Ozturk T, Eruz MM, Yagci A. A comparative assessment of orthodontic treatment outcomes using the quantitative light-induced fluorescence (QLF) method between direct bonding and indirect bonding techniques in adolescents: a single-centre, single-blind randomized controlled trial. Eur J Orthod 2019; 42:441-453. [DOI: 10.1093/ejo/cjz058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Summary
Introduction
The aim of this two-arm parallel trial was to evaluate enamel demineralization in fixed orthodontic treatment using an indirect bonding technique in comparison to a direct bonding technique by the quantitative light-induced fluorescence (QLF) method.
Design, settings and participants
Fifty-six patients who needed fixed orthodontic treatment were randomly separated into either the direct bonding group or the indirect bonding group. The presence and extent of lesions on the buccal surfaces of all teeth, except the molar teeth, were assessed. The percentage of fluorescence loss (ΔF and ΔFmax), the degree of demineralization (ΔQ) and lesion area (WS area) were determined using the system’s software. The data were analysed with the Wilcoxon signed-rank and Mann–Whitney U-tests (P < 0.05).
Interventions
Treatment with a direct bonding or an indirect bonding technique.
Results
This study was completed with 25 patients in the indirect bonding group (12 females, 13 males; mean age: 15.42 ± 1.71 years) and 26 patients in the direct bonding group (12 females, 14 males; mean age: 14.73 ± 1.65 years). In the indirect bonding technique, a few teeth (especially mandibular left canine: 50.45 ± 93.48; 95% confidence interval: −12.35 and 113.26) were found to develop significant white spot lesion (WSL) formation (P < 0.05). However, the number of teeth with demineralization was higher in the direct bonding group (P < 0.05).
Conclusion
The bonding procedures used in the indirect bonding technique contribute to reducing the degree of WSL formation. Further, the use of flowable composite adhesives in this bonding process is more effective at reducing the appearance of WSLs than in cases where conventional composite adhesives are used.
Limitations
The limitation of our trial may be the small sample size and the short follow-up time for the patients.
Harms
No harms were detected during the study.
Protocol
The protocol was not published before trial commencement.
Registration
This trial was registered post hoc at ‘Clinical Trials’ (http://www.clinicaltrials.gov), registration number (ID): NCT03738839.
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Affiliation(s)
- Aykan Onur Atilla
- Osmanli Dental Center, Republic of Turkey Ministry of Health, Ankara
| | - Taner Ozturk
- Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri
| | | | - Ahmet Yagci
- Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri
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Kechagia A, Zinelis S, Pandis N, Athanasiou AE, Eliades T. The effect of orthodontic adhesive and bracket-base design in adhesive remnant index on enamel. J World Fed Orthod 2015. [DOI: 10.1016/j.ejwf.2014.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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