Agreement between 2D Visual- and 3D Motion Capture-based Assessment of Foot Strike Pattern.

Background: Foot strike patterns during running are typically categorized into two types: non-rearfoot strike (NRFS) and rearfoot strike (RFS), or as three distinct types: forefoot strike (FFS), midfoot strike (MFS), and RFS, based on which part of the foot lands first. Various methods, including two-dimensional (2D) visual-based methods and three-dimensional (3D) motion capture-based methods utilizing parameters such as the strike index (SI) or strike angle (SA), have been employed to assess these patterns. However, the consistency between the results obtained from each method remains debatable.

Foot strike patterns and running-related injuries among high school runners: a retrospective study.

Background: There is a possible relationship between foot strike patterns and running-related injuries; however, this relationship among high school runners remains uninvestigated. Therefore, this retrospective cohort study examined this relationship among high school runners.

Methods: Overall, 123 male Japanese high school runners participated in this study and completed a questionnaire regarding their characteristics, running habits, and running-related injury histories.

Evaluation of irradiation effects of near-infrared free-electron-laser of silver alloy for dental application.

In the application of lasers in dentistry, there is a delicate balance between the benefits gained from laser treatment and the heat-related damage arising from laser irradiation. Hence, it is necessary to understand the different processes associated with the irradiation of lasers on dental materials. To obtain insight for the development of a safe and general-purpose laser for dentistry, the present study examines the physical effects associated with the irradiation of a near-infrared free-electron laser (FEL) on the surface of a commonly used silver dental alloy.

Development of MDP-based one-step self-etch adhesive--effect of additional 4-META on bonding performance.

We designed three experimental 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-based one-step (EX) adhesives consisting of MDP, urethane dimethacrylate, and triethylene glycol dimethacrylate adhesives with different water contents (98.4, 196.8, and 294.

A selective medium for Rothia mucilaginosa and its distribution in oral cavities.

A selective medium for Rothia mucilaginosa (RMSM) was developed to examine the population of R. mucilaginosa in oral cavities. The growth recovery of R.

A novel selective medium for the isolation and distribution of Rothia dentocariosa in oral cavities.

Rothia dentocariosa is an indigenous microbial flora of dental plaque. To examine the bacterium population in oral cavities, a novel selective medium, designated RDSM, was developed for the isolation of R. dentocariosa.

[Aging effect of one bottle-type ceramic primer on bonding efficacy of resin cement].

Purpose: To understand the degradation mechanisms of commercially available one bottle-type ceramic primer, we prepared one bottle-type experimental ceramic primer consisting of gamma-methacryloxy-propyl-trimethoxysilane, gamma-MPTS, and 90% ethanol solution. The effects of aging of the experimental primer on the hydrolysis and condensation behavior of gamma -MPTS and on the bonding efficacy of gamma-MPTS at the interface between cement and ceramic were studied.

Methods: We used two lamina bond porcelain primers (LB), that had been aged for 20 months and newly purchased.