Effect of pressure during curing placement technique on bond strength of resin composite to human dentin.

Purpose: To evaluate and compare the effect of pressure during curing on resin composite bond strength to dentin using a self-etch bonding protocol.

Methods: 20 human teeth were cut to the mid-coronal dentin and received a standardized smear layer. The prepared teeth were randomly assigned to the following two groups (n= 10/group): (1) without pressure during curing (control) or (2) with pressure during curing.

Lean methods to improve operating room elective first case on-time starts in a large, urban, safety net medical center.

Background: Delays in first cases contribute to multiple operating room (OR) inefficiencies and decreases in OR productivity.

Methods: Lean process improvement methods were used to redesign the existing workflow for elective first cases of the day in a large, urban, public hospital. First case start times were prospectively recorded from May 2, 2016 through December 29, 2017.

Improving capacity and consent to treatment recording in psychiatric inpatient wards: A multi-centre quality improvement project.

Assessment of mental capacity provides an ethical and legal framework for care which values patients' autonomy whilst recognising the instances where it is appropriate to act in patients' best interests. Existing medical literature indicates that mental capacity is poorly documented in psychiatric inpatient settings. The aim of the project was to examine the frequency of capacity and consent to treatment documentation with a view to creating changes in practice by raising awareness about the importance of assessing and documenting mental capacity.

Increasing 'ease of sliding' also increases friction: when is a lubricant effective?

We investigate experimentally the effective Coulomb friction exerted by a granular medium on a shearing plate, varying the medium depth. The plate is driven by a spring connected to a motor turning at a constant speed and, depending on the system configuration, performs continuous sliding or stick and slip in different proportions. We introduce an order parameter which discriminates between the different regimes expressing the fraction of time spent in slipping.