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At least 163 records · Page 9Linked to original sources
PubMed2005

Unusually difficult ring removal from a finger solved using a dental instrument.

Ring removal is indicated in a number of clinical circumstances to manage or prevent tourniquet effect of the digit, or allow access to underlying conditions or injuries. A ring made from hardened metal may defy many or all commonly known methods of removal. We report a case of unusually difficult removal of a ring of hardened metal composition using a dental volvere. We believe the unusual circumstances of this case are likely to be repeated on some readers' clinical practice, and that this instrument is an appropriate option to consider in such cases.

Adolescent↗
PubMed2005

Residual protein levels on reprocessed dental instruments.

Reduction of the initial bioburden on instruments, prior to sterilization, is believed to reduce transmission risks of iatrogenic Creutzfeldt-Jakob disease. Endodontic files are used in the preparation of root canals and are likely to have close contact and become contaminated with neural material from branches of the maxillary and mandibular cranial nerves. This study examined methods used by 22 dental practices to clean endodontic files, and scored visible debris and residual protein levels adhering to 220 dental endodontic files that had been used, cleaned, autoclaved and were deemed ready for re-use. Visible debris was scored after examination under a dissecting light microscope. Residual protein was quantified using a fluorescent assay based on reaction of proteins with o-phthaldialdehyde/N-acetyl cysteine. There was wide variation in the methods used by practices to clean endodontic files. The cleaning process varied from a wipe with an alcohol-impregnated cloth to hand scrubbing and/or use of an ultrasonic bath. Surface debris was visually detected on 98% of files. Residual protein was detected on all the files examined (median amount: 5.4 microg; range: 0.5-63.2 microg). These results demonstrate that the cleaning of some instruments reprocessed routinely in primary care is incomplete, and such instruments cannot be excluded as a potential source of cross-infection.

Acetylcysteine↗
PubMed1995

Assessing viral retention and elimination in rotary dental instruments.

The authors of this article used a laboratory model of herpes simplex virus infection to assess the potential for contamination of dental handpieces by a human viral pathogen. They found that although all the handpieces in the study were fitted with anti-retraction valves, it was not until the units were flushed internally and disinfected externally that the pathogens were eliminated.

Dental High-Speed Equipment↗
PubMed1992

An evaluation of the Periotest system. Part II: Reliability and repeatability of instruments. Dental Implant Clinical Research Group (Planning Committee).

Investigators involved in a clinical study on dental implants being conducted by the Dental Implant Clinical Research Group participated in a two-part in vitro evaluation of the Periotest system. The first part involved each of 35 investigators taking three readings for each of 16 models designed to simulate an implant in place in the oral cavity and to cover most of the effective measuring range of the instrument. The second part, with which this article is concerned, was conducted by three study investigators to determine the level of agreement in readings for six different Periotest instruments. Readings were taken according to the manufacturer's instructions until two coincident readings were obtained. The readings were compared to evaluate inter- and intrainstrument reliability. Instrument repeatability was evaluated by examining the number of attempts required to obtain the two coincident readings. The Periotest system generally demonstrated a high degree of repeatability and reliability, with higher variability associated with specific model samples.

Dental Implants↗
PubMed1995

[Hygienic processing of dental transmission instruments (handpieces and instruments, turbines) in dental practice].

The efficacy of a steam disinfection method for the processing of used instruments in dental practice was tested with 274 high-speed turbines and handpieces. The instruments treated with streaming steam were both taken out of the dental practice of treatment and artificially contaminated with five different test-microorganisms (E. coli, P. aeruginosa, S. aureus, E. faecium, C. albicans) and different concentrations of serum (1%, 10%, 20%). In spite of the narrow channels of these instruments a microbial reduction of more than 5 log10 steps could be achieved in all cases. Thus dental high-speed turbines and handpieces can reliably be disinfected with streaming steam.

Colony Count, Microbial↗
PubMed1990

[Pediatric dentistry and dental fear].

The development of dental anxiety is often related to dental experiences in the childhood. A. study (3) from Copenhagen shows that among 20-21-year-old Danes, 37% had a negative assessment of child dental care and 14% had phobic reactions to dental care. The article examines factors which could have influence on the psychologic atmosphere in the clinic and in this way the psychologic reactions of the child. Some factors are not specifically related to the dentist, such as the availability of parent/child's choice of dentist, the psychologic interaction in the treatment triangle, the specific interaction between the dentist and the clinic assistant and finally the physical aspects of the clinic (dental instruments, dental equipment, dental clothing, and colors and dimensions of the dental cabinet). Factors which are specifically related to the dentist are the dentist experience and psychologic skills and awareness of his own limitations, and requirement to take the time to communicate and create an atmosphere of confidence. Also sex and age could have some influence. Finally the dentist should have a thorough knowledge and experience in the administration of pharmacologic agents. The best way to evaluate the psychologic factors is continually to record the child's behavior in the treatment situation and the parents opinion about the dental care system. A very concrete way to evaluate, is to record some treatment situations on a video and discuss the communication and the behavior of the child with the clinic assistant.

Adolescent↗