[ Title ]
First Aid and It's Training of Dental Clinic
[ Publication ]
Sotokawa T., Tiba K., Okada H. : First Aid and It's Training of Dental Clinic, Nippon Dental Review, 515 : 219~222, 1985.
[ Abstract ]
The purpose of this study was to establish resuscitation for a patient who gets into sudden illness during dental treatment.
We describe here a process of first-aid treatment in dental offices before regular medical care is available.
We hope it will be of help to your office.
[ Title ]
Study on bacteria in compressed air released from an air compressor in dental clinics.
[ Publication ]
Study on bacteria in compressed air released from an air compressor in dental clinics.
[ Abstract ]
The purpose of this study is to investigate bacterial contamination of air released from an air compressor used in dental clinics. Seven dental clinics in Morioka were chosen at random. Air released from the compressors installed at these clinics sample by blowing against nutrient agar plates from the outlet of a three-way syringe.
After 48-hr culture at 37℃, the number of colonies formed was counted. Water discharged from the compressors was smear-sampled. Bacteria floating in a room containing machines were determined using an RCS air sampler. The existence of bacteria was confirmed in air forced out of the air compressor. Two favorable sources for bacterial growth and reproduction were detected : air exhausted from the vacuum pump, and water collected inside the compressor. This study suggested that air from a vacuum pump should be emitted to the outside atmosphere and the supply of air to the compressor should come from outside the clinic. In addition, water should be frequently discharged from a compressor, and air should be cleared from it after daily dental practice in order to keep the inside dry.
The favorable sources for bacterial growth and reproduction were detected air exhausted from the vacuum pump.
[ Title ]
Study on disinfection of root canal instruments.
[ Publication ]
Sotokawa T. : Study on disinfection of root canal instruments, Dent. J. Iwate Med. Univ. , 13 : 137~143, 1988.
[ Abstract ]
On the basis of answers to questionnaires obtained from 71 dental clinics regarding instruments used in the disinfection and cleaning of the root canal, the disinfection and cleaning methods were examind with a scanning electron microscope and bacteria cultures.
The results were summarized as follows :
1. The disinfection procedures applied in dental clinic were found to be ineffective in prevevting virus infection.
2. To remove the debris between the instrument blades during clinical practice, two methods -- wiping off the debris with alcohol cotton and inserting the instrument into a sponge permeated with an antiseptic solution -- were more effective than any other method.
3. Ultrasonic cleaning before disinfection, which was found to be in wide use among the dental clinics, was found to be an effective method to clean the debris.
4. It was confirmed that the combination of using a disinfectant and the ultrasonic apparatus shortened the disinfection time and considerably enhanced the disinfection effect. Obviously, a chemical solution effective in preventing virus infection should be applied in this procedure.
Ultrasonic cleaning before disinfection was found to be an effective method to clean the debris.
MAIL : sotokawashika@ozzio.jp