Light-curing of orthodontic bracket adhesive by transillumination through dentine and enamel

Mäkinen, Erika; Lassila, Lippo; Varrela, Juha; Vallittu, Pekka K.

doi:10.1080/26415275.2019.1632709

Cited by 5 publications

(2 citation statements)

References 19 publications

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“…[16]. Among these, organosilicon adhesion promoters stand out for their unique properties [17][18][19][20][21]. A special feature of these compounds is manifested in the versatility of the promoting effect on substrates and polymers of various types.…”

Section: Introductionmentioning

confidence: 99%

Corrosion of Metals Modified with Formulations Based on Organosilanes

Петрунин

Yurasova

Rybkina

et al. 2023

Metals

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Methods for preliminary modification of the surface of structural metals with formulations based on organosilanes, including both solutions of individual organosilanes and two-component mixtures consisting of two organosilanes or an organosilane with an organic corrosion inhibitor, have been developed. As a result of this modification, a self-assembling siloxane polymeric/oligomeric nanoscale layer is formed on the metal surface. Such layers are capable of changing the physicochemical properties of the metal surface, in particular reducing the susceptibility of the metal to corrosive destruction. In this work, the mechanism of formation of organosilicon nanolayers and their effect on the electrochemical and corrosion behavior of metals have been studied in detail by a set of electrochemical methods, while laboratory studies and accelerated corrosion tests of carbon steel and zinc, modified with formulations based on organosilanes, have been carried out. The greatest inhibitory effect is demonstrated by two-component modifying formulations, namely mixtures of vinyl with aminosilane and vinylsilane with benzotriazole. The mechanism of corrosion inhibition by surface nanolayers formed upon surface modification with two-component mixtures has been considered.

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Section: Introductionmentioning

confidence: 99%

Corrosion of Metals Modified with Formulations Based on Organosilanes

Петрунин

Yurasova

Rybkina

et al. 2023

Metals

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“…Therefore, studies concerning light curing through the tooth are important not only to orthodontics but also for prosthetic treatment, for example curing ceramic fillings through the enamel. [ 3 ]…”

Section: Introductionmentioning

confidence: 99%

Comparison of demineralization around orthodontic brackets cured by conventional method and transillumination technique-an in vitro evaluation

Raza¹,

Kumar²,

Gulati³

et al. 2020

J Orthodont Sci

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OBJECTIVE: To compare demineralization around orthodontic brackets cured by conventional method and transillumination method. MATERIALS AND METHOD: Sixty freshly extracted human premolar teeth were divided into four groups. Group 1: Brackets bonded with conventional method of bonding by curing labially for 40 sec. Group 2: Brackets bonded with transillumination method of bonding for 50 sec. Group 3: Brackets bonded with conventional method of bonding by curing labially for 20 sec followed by 30 sec of transillumination. Group 4: Brackets bonded with transillumination method of bonding for 30 sec followed by labial curing for 20 sec. Ground sections were prepared of each tooth and microleakage was evaluated using a binocular microscope at 40× magnification (Olympus BX53) and an image was taken using a digital camera (Olympus EPL3) connected to the microscope. The images were analyzed using Magnus Pro Image software. Scores were assigned to different degrees of microleakage at the demineralization zone around enamel-adhesive-bracket complex at the occlusal, middle, and gingival margins using linear measurement tool. Data obtained was subjected to statistical analysis using SPSS software (Version 20.0). Level of significance was kept at 5%. Intragroup comparison was done using Kruskal-Wallis test followed by Mann-Whitney U-tests for pairwise comparison. RESULTS: Group 4 showed least mean demineralization in occlusal, middle, and cervical areas as compared to other groups and the results were statistically significant ( P < 0.05). CONCLUSION: Transillumination can be employed as a method synergistically with conventional curing to achieve minimum amount of demineralization during fixed orthodontic treatment.

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Experimental Bracket Design Performance on Bonding and Polymerization of Orthodontic Composite

Salgado,

Feitosa,

Farrapo

et al. 2024

BioMed Research International

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Objective. To evaluate the enamel bonding ability and orthodontic adhesive resin degree of conversion using the experimental bracket design. Material and Methods. Thirteen bovine teeth were used in the study. The experimental bracket was modified with a translucent region in the center of its body. After enamel etching, Orthocem orthodontic adhesive (FGM, Joinville, Brazil) was applied on the bracket base for bonding. The groups were divided as follows (n = 10 per group): (1) control (CB) with standard brackets and (2) spot bracket (SB) with experimental brackets featuring a 0.8 mm translucent region at the center using carbide bur. Shear bond strength (SBS) was evaluated after 24 hours in a universal testing machine and adhesive remnant index (ARI). The degree of conversion (DC) was analyzed using Raman spectroscopy (n = 3 per group). Data were then analyzed using Student’s t‐test and Mann–Whitney statistical methods. Results. The SB group exhibited a higher mean SBS (10.33 MPa) compared to the CB Group (8.77 MPa). However, there was no statistical difference between the groups (p = 0.376). Both SB and CB groups had a mean ARI score of 1. Raman analysis revealed a higher degree of conversion in the SB group (49.3%) compared to the CB group (25.9%). Conclusions. The experimental support showed a higher degree of adhesive conversion, although there was no significant increase in bond strength.

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Light-curing of orthodontic bracket adhesive by transillumination through dentine and enamel

Cited by 5 publications

References 19 publications

Corrosion of Metals Modified with Formulations Based on Organosilanes

Corrosion of Metals Modified with Formulations Based on Organosilanes

Comparison of demineralization around orthodontic brackets cured by conventional method and transillumination technique-an in vitro evaluation

Experimental Bracket Design Performance on Bonding and Polymerization of Orthodontic Composite

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