Objectives: To evaluate the influence of surface treatment and adhesive system on shear bond strength failure mode orthodontic brackets bonded to polymethylmethacrylate surfaces. Methods: Ninety metal (n=15) were aged discs SR Ivocron subjected three conditions (no treatment; sandblasting with 50-?m aluminum oxide; roughening a tungsten bur), using two combinations adhesives (methylmethacrylate...

the aim of this study was to evaluate the effect of chlorhexidine (chx) application on immediate and two-month bond strength of a filled adhesive system. methods: forty eight non-carious human third molars without enamel of occlusal surface were randomly divided into two main groups according to chx application: control and chx. each main group was further subdivided into 2 subgroups depending ...

Two synthesized eco-epoxy components based on TA: (A) glycidyl ether and (B) phosphate ester, are used, as a replacement for the Bisphenol A (BPA) epoxy component, bonding aluminum (Al) carbon fiber reinforced polymer (CFRP). Their effect mode I fracture toughness (GI) is evaluated by Double Cantilever Beam (DCB) testing while using Digital Image Correlation (DIC) in-situ crack tip monitoring. ...

OBJECTIVE Resin infiltration is considered as a treatment option for initial caries lesions. As cavitated early lesions might require additional restorative intervention, a caries infiltrant might be also used for enamel conditioning prior to composite insertion. This study aimed to analyse the shear bond strength of a flowable composite to sound and demineralised enamel pretreated with a carie...

the aim of this study was to evaluate the effect of chlorhexidine (chx) application on immediate and two-month bond strength of a filled adhesive system. methods: forty eight non-carious human third molars without enamel of occlusal surface were randomly divided into two main groups according to chx application: control and chx. each main group was further subdivided into 2 subgroups depending ...

This study evaluated the bonding characteristics to ground and unground enamel obtained with different strategies. For this purpose, 24 sound third-molars were bisected mesiodistally to obtain tooth halves. A flat enamel area was delimited in the tooth sections, which were randomly distributed into 8 groups (n=6), according to the enamel condition (ground and unground) and adhesive system (Adpe...

The purpose of the present study was to assess the bond strength of composite resin repairs subjected to different surface treatments and accelerated artificial aging. 192 cylindrical samples (CSs) were prepared and divided into 24 groups (n = 8). Half of the CSs were stored in water for 24 h, and the other half were subjected to C-UV accelerated aging for non-metallic specimens. The treatments...

The durability of adhesive joints is of special concern in structural applications and moisture has been identified as one of the major factors affecting joint durability. This is especially important in applications where joints are exposed to varying environmental conditions throughout their life. This paper presents a methodology to predict the stresses in adhesive joints under cyclic moistu...

This article describes a procedure in which an obturator with an integrated spring-loaded rewinding device retains an orbital prosthesis. This system minimizes movement of the orbital prosthesis during mastication and thus prevents adhesive failure.

Background and Aim: Use of fluoride releasing materials to decrease the risk of demine-ralization around orthodontic brackets would be reasonable as an adhesive for bracket bonding only if they provide acceptable shear bond strength (SBS). The aim of this study was to evaluate the SBS of resin-modified glass ionomer cements (RMGICs) modified by nano-zinc oxide (NZnO) and nano- hydroxyapatite (N...