Medicine and Health Sciences Commons^™

Viscoelastic Properties Of Orthodontic Adhesives Used For Lingual Fixed Retainer Bonding, Demetrios P. Papadogiannis, A. Iliadi, T. Gerard Bradley, N. Silikas, George Eliades, T. Eliades

School of Dentistry Faculty Research and Publications

Objective

To evaluate the viscoelastic properties of two experimental BPA-free and one BisGMA-based orthodontic resin composite adhesives for bonding fixed retainers.

Methods

A commercially available BisGMA-based (TXA: Transbond LR) and two bisphenol A-free experimental adhesives (EXA and EXB) were included in the study. The viscoelastic behavior of the adhesives was evaluated under static and dynamic conditions at dry and wet states and at various temperatures (21, 37, 50 °C). The parameters determined were shear modulus (G), Young’s modulus (E) under static testing and storage modulus (G₁), loss tangent (tan δ) and dynamic viscosity (n*) under …

Bond Strength Of An Amorphous Calcium Phosphate–Containing Orthodontic Adhesive, Jeff A. Foster, David W. Berzins, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

Objective: To determine whether an amorphous calcium phosphate (ACP)-containing adhesive has an acceptable level of shear bond strength to be used as an orthodontic adhesive.

Materials and Methods: Sixty extracted premolars were randomly divided into three groups for orthodontic bonding. Group 1 used a composite resin adhesive (Transbond XT), group 2 was bonded with an ACP-containing adhesive (Aegis Ortho), and group 3 used a resin-modified glass ionomer (Fuji Ortho LC). All bonded teeth were stored in distilled water at 37°C for 40 ± 2 hours prior to debonding. Shear bond strength and adhesive remnant index (ARI) were recorded for each …

Shear Bond Strength Comparison Between Two Orthodontic Adhesives And Self-Ligating And Conventional Brackets, Rodney G. Northrup, David W. Berzins, T. Gerard Bradley, William I. Schuckit

School of Dentistry Faculty Research and Publications

Objective: To evaluate and compare the shear bond strengths of two adhesives using two types of brackets: a conventional and a self-ligating bracket system.

Materials and Methods: Sixty extracted human premolars were collected. The premolars were randomly divided into three groups of 20 teeth. All three groups were direct bonded. Groups 1 and 2 used light-cured adhesive and primer (Transbond XT) with a conventional (Orthos) and a self-ligating bracket (Damon 2), respectively. Group 3 used a light-cured primer (Orthosolo) and a light-cured adhesive (Blūgloo) with a self-ligating bracket (Damon 2). The specimens were stored in distilled water at 37°C for …