IMPORTANCE OF THE FIELD Since the 1950s, ultrasonic nebulizers have played an important role in pulmonary drug delivery. As the process in which aerosol droplets are generated is independent and does not require breath-actuation, ultrasonic nebulizers, in principle, offer the potential for instantaneously fine-tuning the dose administered to the specific requirements of a patient, taking into a...

Periodontal therapy aims at arresting periodontal infection and maintaining a healthy periodontium. The periodic mechanical removal of subgingival microbial biofilms is essential for controlling inflammatory periodontal disease. Mechanical periodontal therapy consists of scaling, root planing and gingival curettage. The sonic and ultrasonic scalers are valuable tools in the prevention of period...

Theoretically it was determined that changing longitudinal rigidity of waveguide the longitudinal vibrations amplitudes are increasing. The cross-section of waveguide is decreasing from the generating point towards its free end. Experimental results show that the free end of the waveguide is influenced by longitudinal vibrations only, which could be used for blood vessels cleaning.

The aim of our study was to verify if the type of nebulizer used could influence the results of aerosol therapy with beclomethasone dipropionate (BDP) in mild allergic asthma. We assigned 27 asthmatics allergic to grasses to 3 groups and treated them from May to July 1998 with aerosol therapy with BDP (800 microg) b. i. d. via nebulizer + pMDI salbutamol (200 microg) if necessary. Each group us...

Several medical tools with various functions have been developed for minimally invasive diagnostics and treatment. Microfabrication techniques such as MEMS technology are useful for the realization of high-performance multifunctional minimally invasive medical tools with small sizes. An ultra-miniature pressure sensor and an intravascular ultrasonic forward-viewing imager have been developed as...

objectives: the main disadvantage of fiber posts is their low bond strength to root canal wall. the aim of the present study was to assess the effect of different root canal post space treatments on push-out bond strength of fiber posts to root dentin. materials and methods: after post space preparation in 40 endodontically treated human premolars, the teeth were randomly divided into four expe...