Monomer conversion and hardness of novel dental cements based on ethyl cyanoacrylate.

Objectives: The aim of this work was to study the setting of two novel dental cements: (i) a 'hybrid' cement, incorporating an ethyl cyanoacrylate into a glass-ionomer cement (ECGIC) formulation and (ii) an ethyl cyanoacrylate/hydroxyapatite composite cement (ECHC). The mechanical role of the cyanoacrylate and its curing within the cements have been discussed.

Methods: The setting of the cements was characterised using Vickers indentation hardness and near-infrared (near-IR) spectroscopy.

The strength of suture configurations in arthroscopic rotator cuff repair.

Purpose: This study evaluated the strength of different suture configurations with the use of a recently introduced arthroscopic suture passer (ExpressSew; Surgical Solutions, Valencia, CA).

Methods: The ultimate tensile strength and mode of failure of each suture configuration were repeatedly tested on a validated porcine rotator cuff tendon model, with the use of standard suture material (No. 2 FiberWire [Arthrex, Naples, FL]) passed with ExpressSew and tested on a Hounsfield digital tensiometer type H20K-W (Tinius Olsen, Hersham, PA).