Miniature ball bearings are used in dental technology, where they must meet extremely high demands such as high speeds, extraordinary loads, and extreme peak temperatures inside the bearings. The ball bearing retainer within the ball bearing is key in determining the service life, especially in pneumatically-powered dental instruments with speeds reaching up to 500,000 min. The Rimpar-based com...

The objective of this study is to introduce a modified incremental technique that leads to improved marginal adaptation and to develop a mathematical model that explains the results obtained. The technique proposed is a two-step incremental technique that reduces volume of a resin that is polymerized at each step and eliminates the central point in resin, so that the stresses are additionally r...

Accidental ingestion of instruments or their components is a possible complication of dental treatment. Although in many cases the foreign object can pass through the gastrointestinal tract without any need for surgical intervention to retrieve it, sometimes such incidents can be life-threatening. This paper reports a case of accidental ingestion of an air-water syringe tip during routine denta...

OBJECTIVES To perform a pilot study on bacterial contamination in some dental surgeries (n=51) in a local health unit in Brescia (Lombardy Region, Italy) and to evaluate the procedures to control cross infection used by the personnel to reduce the risk of infection in dental practice. METHODS A survey was carried out by interviewing 133 dental personnel with a questionnaire on the procedures ...

Introduction: Dental radiography as one of the most frequent type of radiological examinations is accepted for medical investigations due to their significant benefits nevertheless using ionizing radiation. It has lower radiation dose compared to another radiological examination but because of its high application for children, radiation dose needs attention. Based on affectin...

AIM To develop and test the methodology of an intervention to reduce avoidance of dental care among adolescents, and to measure the respondents' beliefs regarding the intervention (credibility and cognitions). METHODS Based on a group comparison design a sample of 18 year olds (n=50) with dental non-attendance behaviour was randomly selected to three experimental and one control group. Subjec...

Aerosols containing microbes from the oral cavity of the patient are created when using modern high-speed rotating instruments in restorative dentistry. How far these aerosols spread and what level of contamination they cause in the dental surgery has become a growing concern as the number of patients with oro-nasal meticillin-resistant Staphylococcus aureus colonization has increased. The pres...