The influence of dental unit design on percutaneous injury

Article Abstract:

The design of European-style dental units does not appear to reduce the risk of skin-penetrating injuries in dental health professionals. Dental units are movable trays that keep dental instruments, water, air, and other tools close to the patient. European units keep rotary dental devices near the back of the equipment tray, with the bur or drill facing down. Researchers compared the two devices with 236 dentists, hygienists, and dental assistants. Six injuries occurred with each dental unit design. Most injuries were caused by accidental contact with dental burs, which was similarly common with both designs.

Health aspects, Injuries, Dentists, Dental equipment and supplies, Dental equipment, Dental supplies, Dental auxiliary personnel, Dental hygienists

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Efficacy of bonded and nonbonded amalgam in the treatmen of teeth with incomplete fractures

Article Abstract:

Bonded fillings appear to be better than nonbonded fillings in the treatment of partial tooth fracture. The nonbonded filling is kept in place with pins. Thirty-eight patients with a partial tooth fracture were randomly assigned to be treated with a bonded or nonbonded filling. Both types of fillings successfully eliminated pain on chewing but only the bonded filling reduced cold sensitivity.

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Causes of failure among cuspal-coverage amalgam restorations: a clinical survey

Article Abstract:

Tooth fracture is the cause of many failed dental fillings that cannot be adequately repaired. In a study of 706 failed fillings, 24% were caused by fractured teeth, 20% by cavities, and 17% by a fracture in the filling. Fourteen percent of the tooth fractures were not repairable compared to 8% of the failed fillings overall.

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