Adhesion and orthodontic plastic attachments

Newman, George V.

doi:10.1016/0002-9416(69)90193-6

Cited by 100 publications

(34 citation statements)

References 12 publications

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“…Newman described the first use of acid-etching in bonding orthodontic brackets with an epoxy-derived resin 3,4) . In 1972, Silverman and Cohen 5) introduced the first indirect bonding process, in which the brackets before bonding were positioned on a cast model of the patient, and then successively transferred to the patient's mouth via customized trays.…”

Section: Introductionmentioning

confidence: 99%

Comparison of enamel-bracket bond strength using direct- and indirect-bonding techniques with a self-etching ion releasing S-PRG filler

et al. 2015

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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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Section: Introductionmentioning

confidence: 99%

Comparison of enamel-bracket bond strength using direct- and indirect-bonding techniques with a self-etching ion releasing S-PRG filler

et al. 2015

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“…Direct bonding is a significant development in dentistry that has been applied in all fields of dentistry including orthodontics, [1][2][3][4] since its introduction by Buonocore 5 ploy three different agents, ie, an enamel conditioner, a primer solution, and an adhesive resin. Self-etch systems, on the other hand, combine the conditioning and priming agents into a single acidic primer solution.…”

Section: Introductionmentioning

confidence: 99%

Rebonding of Orthodontic Brackets

Montasser

Drummond

Evans

2008

The Angle Orthodontist

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Objective: To compare rebonding of orthodontic brackets based on the hypothesis that no difference would be found between the adhesive systems with respect to shear bond strength, mode of failure, and clinical failure rates. Materials and Methods: The three adhesive systems included two self-etch primers (Transbond and M-Bond) and a conventional phosphoric acid etch (Rely-a-Bond). The sample size was 20 premolars for each adhesive system. The shear bond strength was tested 24 hours after bracket bonding with the bonding/debonding procedures repeated two times after the first debonding. Bond strength, adhesive remnant index (ARI), and failure sites were evaluated for each debonding. Statistical analysis consisted of a two-way analysis of variance (ANOVA) followed by Scheffè analysis. The clinical portion evaluated 15 patients over a 12-month period. Results: The mean shear bond strengths after the first, second, and third debondings for Relya-Bond were 8.4 Ϯ 1.8, 10.3 Ϯ 2.4, and 14.1 Ϯ 3.3 MPa, respectively; for Transbond 11.1 Ϯ 4.6, 13.6 Ϯ 4.5, and 12.9 Ϯ 4.4 MPa, respectively; and for M-Bond 8.7 Ϯ 2.7, 10.4 Ϯ 2.4, and 12.4 Ϯ 3.4 MPa, respectively. After the three debondings the mean shear bond strength increased significantly from the first to the third debonding for Rely-a-Bond and M-bond (P Յ .001), but did not change for Transbond (P ϭ .199). Conclusions:The original hypothesis is not rejected. The two self-etching primers showing higher or comparable bond strength to the conventional phosphoric etch with less adhesive remnant on the enamel surface after the first debonding. With repeated bonding/debonding, the differences in the bond strength, ARI, and failure site were not significantly different. There was no difference in the clinical performance of the three adhesive systems (P ϭ .667).

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“…A topografi a da superfí cie do esmalte é altamente variável e irregular e que sua composição não é homogênea 8 . O esmalte dentário é, parti cularmente, vulnerável aos ácidos e que, no meio bucal ele está sujeito ao ataque de vários agentes e à descalcifi cação de sua superfí cie, promovendo uma mudança ou perda de substância 8 . O primeiro bráquete não metálico foi apresentado em 1969 8 , em um estudo com colagem de bráquetes estéti cos de policarbonato, manufaturados através de um processo de injeção de moldes do material plásti co na forma do bráquete específi co, com precisão sufi ciente INTRODUÇÃO REVISÃO DE LITERATURA para reproduzir pequenos detalhes.…”

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“…O esmalte dentário é, parti cularmente, vulnerável aos ácidos e que, no meio bucal ele está sujeito ao ataque de vários agentes e à descalcifi cação de sua superfí cie, promovendo uma mudança ou perda de substância 8 . O primeiro bráquete não metálico foi apresentado em 1969 8 , em um estudo com colagem de bráquetes estéti cos de policarbonato, manufaturados através de um processo de injeção de moldes do material plásti co na forma do bráquete específi co, com precisão sufi ciente INTRODUÇÃO REVISÃO DE LITERATURA para reproduzir pequenos detalhes. Composto por resina de óti ma natureza, próxima à do aço, os bráquetes de policarbonato ou de plásti co, possuem propriedades fí sicas e característi cas que permiti ram sua aplicabilidade clínica, tais como: atoxicidade, resistência à abrasão e ao impacto relati vamente altas, coloração e translucidez adequados, além de ser inodoro e insípido 8 .…”

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