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explain in brief about polymersin comparison to metals and ceramics polymers are weak and flexible these are not popular as dental implant materials
what is ceramicsa kind of material that is bone like based on the specific ratios of calcium and phosphorous in particular crystalline structures
explain biomaterial implantationwhen a biomaterial is introduced into the host in addition to a host response there is also a material response
name the corrosion resistant metalsmost of the corrosion resistant metals or alloys used for implants have a layer of oxides on their surface the
illustrate briefly about titanium it is generally accepted that pure titanium has little cytotoxicity and it is suggested that the plaque induced
name the alloys which are commonly usedthe most commonly used alloys are ti-6al-4v and ti-6al-4v extra low interstitial eli commercially pure
explain about extra low interstitialextra low interstitial eli contains low levels of oxygen dissolved in interstitial sites in the metal lower
what are the properties of titaniumtitanium has several favourable properties like low specific gravity with a density of 45 gmcm3 high heat
titanium and its alloys - alloplastic implant materialsthese have been used primarily for their corrosion resistance and biocompatibility titanium
tantalum and niobium in alloplastic implant materials tantalum has been used successfully in needle type screw- type and double-bladed implants
metals and alloys in alloplastic implant materialsmost of the dental implant systems are made of metals or their alloys currently commercially pure
categories of alloplastic implant materialsthe entire groups of possible alloplastic implant materials regardless of their clinical applications fall
functionality of implant materialit should take maximum advantage of available bone and permit the maximum amount of forces to be transmitted through
what are the chemical requirements of implant materialsit must withstand corrosion by body fluidsit should not have any direct or indirect negative
mechanical requirements of implant materialsdental implants must be able to sustain and transfer loads -it should have adequate mechanical strength
biologically compatibility od implant materialsan ideal implant material will elicit mainly physiological reactions within the surrounding tissues
explain about bioactive materialsbioactive materials certain glasses ceramics and glass-ceramics that contain oxides of silicon sodium calcium and
state bioinert materialsbioinert materials are chemically inert in the body and exhibit minimal chemical interaction with adjacent tissue such as
what are the biotolerant materialsbiotolerant materials are characterized by a thin fibrous tissue interface the fibrous tissue layer develops as a
bioactiveceramics- hydroxyapatite tricalcium phosphatetetracalcium phosphatecalcium pyrophosphatefluorapatitebrushite
bioinertmetals- commercially pure titanium titanium alloysceramics- aluminum oxide zirconium
biotolerantmetals - co- cr alloys stainless steel gold niobium tantalumpolymers- polyethylene polytetrafluorethylene polyamide
what is biomaterialbiomaterial is defined in the broader sense as any pharmacologically inert material that is capable of interacting with a living
explain the classes of biomaterialswhen an artificial material is placed in the human body tissue reacts in a variety of ways depending on the
q illustrate the tyndallisationjohn tyndall devised a process of sterilisation by steaming for a few minutes at 100o c on 3-4 successive operations