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all the efforts that go into the preparation of instruments are futile if the sterilization process itself is not successful there is no way of
the classification was given by spaulding and is based on the contact with different tissue types to determine whether sterilization or disinfection
q use of aldehydes as chemical sterilantformaldehyde widely employed for the fumigation of operation theatresglutaraldehyde commercial preparations
q can we use ethylene oxide as chemical sterilantethylene oxidethis is considered as the only chemical sterilant while the others are considered
ultrasonic and sonic vibrationscells of all types can be destructed by intense sonic and ultrasonic vibrations generated by magnetostrictive
q explain about non ionising radiationnon ionising radiation include infrared and uv rays lethal effect is through generation of heat and dna damage
q define the ionizing radiation for sterilizationionizing radiation are high energy electromagnetic waves including x-rays gamma rays particulate
q explain about dry heat sterilizationit is used to sterilize glass ware forceps scissors scalpels all glass syringes swabs some pharmaceuticals
q advantage and disadvantage of steam sterilizationadvantage most efficient and reliable sterilization method available its quite simple to operate
the several types of steam sterilizers that are in use1 lab autoclave2 hospital dressing sterilizer3 bowl amp instrument sterilizer4 rapid cooling
q what is autoclave sterilizationword autoclave means self locking and is used to denote an apparatus that sterilizes by use of steam under pressure
q show the use of incineration for sterilizationthis is an excellent method for rapidly destroying materials such as soiled dressings animal
q how tyndallisation used for sterilizationjohn tyndall devised a process of sterilisation by steaming for a few minutes at 100oc on 3-4 successive
q how boiling used for sterilizationthough highly unreliable as a sterilization technique and more effective for disinfection it is used very often
q how drying used for sterilizationmoisture is essential for bacteria drying therefore has a deleterious effect on most bacteria spontaneous drying
q sunlight used for sterilizationit possesses appreciable bactericidal activity under natural condition the action is primarily due to content of the
q chemical agents available for sterilizationchemical agents these include the followingalcohols ethyl alcohol isopropyl alcohol
modalities available for sterilizationthe most accepted methods of sterilization can be classified as followsphysical agents these comprise
packaging for instruments and cassettes packaging used for instruments and cassettes prior to sterilization includes wrap paper pouches plastic
instrument examination and carecleaning instruments provides a good opportunity to examine replace or remove damaged instruments lubricate items such
q classifications of mechanical cleaning devicesin general three classifications of mechanical cleaning devices are available for the dental
q mechanical means of instrument cleaningusing mechanical means of instrument cleaning rather than hand scrubbing should minimize handling of
define osseointegration and its theoriesosseointegration implies that it is a contact established without interposition of non bony tissue between
relate the oxide layer and biocompatibility of titaniumthe compatibility of a metal with its host environment depends on its resistance to
enumerate different implant materials with their pros and consbiomaterials fall into four categories metal and metal alloys ceramics carbon included