Plaque-removing Effects of Interdental Instruments in Molar Region.

Many types of interdental instrument, such as dental floss and interdental brushes, can be purchased easily and sell in large numbers. Many studies have compared the effects of such instruments. Few studies have investigated their relationship with regions of residual plaque, however.

Optical properties and flexural strength of translucent zirconia layered with high-translucent zirconia.

This study investigated the optical properties and flexural strength of translucent TZP layered with high-translucent PSZ using resin cement of various shades. Zirconia specimens (translucent TZP; Zpex and high-translucent PSZ; ZpexSmile) were 13 mm in diameter, layered at thickness ratios of 0.3/0.

Status of Clinical Training at Tokyo Dental College and Subsequent Career Pathway - Focusing on Training Facilities and Programs.

The goal of the present study was to clarify the status of training in clinical dentistry at training facilities belonging to Tokyo Dental College by investigating trainee quota fill rates and analyzing the relationship between selection of training program and subsequent career pathway. The trainees were divided into 4 groups based on career pathway after training: those entering graduate school; those becoming residents; those remaining at the college or hospital to take specialized clinical courses or for other purposes; and those starting work outside the college. The trainee quota fill rate was highest at the Suidobashi Hospital, followed by the Ichikawa General and Chiba Hospitals.

Effect of connector design on fracture resistance in all-ceramic fixed partial dentures for mandibular incisor region.

Yttrium tetragonal zirconia polycrystal frameworks were prepared for all-ceramic fixed partial dentures (FPDs) for the mandibular incisor region. The effects of the cross-sectional area and morphology of the connector on its strength were evaluated by fracture tests. Nine types of zirconia framework for a 3-unit FPD for a defect of 1 mandibular central incisor were prepared, each differing in cross-sectional area and morphology.

Time course analysis of influence of food hardness on head posture and pitching of head during masticatory movement.

The purpose of the present study was to investigate the relationship between mastication and head posture using foods with different degrees of hardness. A total of 12 healthy, dentulous volunteers participated in the study. Each participant was required to chew two types of gummy candy with two levels of hardness while sitting upright.