A novel treatment based on powder jet deposition technique for dentin hypersensitivity: a randomized controlled trial.

Background: This study aimed to evaluate the efficacy and safety of dentin hypersensitivity (DH) treatment using a newly developed device based on a powder jet deposition (PJD) technique that creates a hydroxyapatite (HAP) layer on the dentin surface, thereby alleviating the hypersensitivity. The effect of the PJD treatment was compared with that of conventional treatment using Teethmate Desensitizer (TMD; calcium-phosphate containing material with TTCP (Ca(PO)O) and DCPA (CaHPO)), which has been used clinically in Japan with well-confirmed effectiveness.

Materials And Methods: A randomized controlled trial was conducted including 35 patients who had symptoms of DH in two or more quadrants.

Clinical Evaluation of Monolithic Zirconia Crowns: A Short-Term Pilot Report.

Purpose: This study aimed to prospectively evaluate the clinical performance of monolithic zirconia crowns made of yttria-stabilized tetragonal zirconia polycrystal.

Materials And Methods: A total of 26 crowns placed on premolar or molar teeth in 18 patients were evaluated at the time of crown placement and at 2 weeks, 6 months, 1 year, and 2 years after placement.

Results: Twenty-five crowns rated as satisfactory according to the California Dental Association quality evaluation system.

Evaluation of thermal stress in hydroxyapatite film fabricated by powder jet deposition.

This study aimed to create a thick hydroxyapatite (HA) film on the surface of a human tooth via a powder jet deposition (PJD) device for dental handpieces, and to examine the microstructural and mechanical properties of the HA film. In particular, the effects of thermal stress on this film were evaluated. The HA film was created by blasting 3.

Effect of hydroxyapatite film formed by powder jet deposition on dentin permeability.

A powder jet deposition (PJD) process can be used to create a thick hydroxyapatite (HA) film on the surface of a human tooth. This study aimed to investigate in vitro the ability of an HA film, applied using PJD, to diminish dentin permeability. Discs of human coronal dentin were cut perpendicular to the tooth axis and the smear layer was removed by EDTA treatment.

Characteristics of hydroxyapatite film formed on human enamel with the powder jet deposition technique.

This study aimed to create hydroxyapatite (HAp) film by powder jet deposition with manipulating the blasting nozzle above human enamel and to examine the microstructural and mechanical properties of the HAp film and the bonding strength at the interface between the HAp film and the enamel substrate. HAp particles calcinated at 1200°C with an average size of 4.7 μm were used.