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Coolant and dentists

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  • #16
    cool dentist story time.....ultra sonic scalers......the chick(dental hygenist)
    tell me about the new "toy" she is going to use on me. I say fine, lets do it.
    Every time she uses it on my teeth i am getting a shock. I tuff it out for a while and then i tell her it feels like the machine is not grounded. She looks
    at me weird like and then tells the Dr. He comes in and checks it out and almost s***s........Dean charge visit
    next free cleaning
    1 free crown


    • #17
      The dentist I go to has a CNC machine for making crowns while you wait...Last time I went in for a check up it was working making up a new tooth for the patient before me.. I did not get to see it but it was quite noisy...
      Precision takes time.


      • #18
        Originally posted by oldtiffie
        Aren't used burrs supposed to be disposed of as for "sharps" and anything blood-stained or with body parts or fluids in or on them? ie into the "Yellow" hazardous wastes bin/box/bottle etc. and then destroyed in a super hot furnace?
        Hi Tiffie,

        Ordinarily, by today's standards, "sharps" are manufactured as disposable items. Some items, not designed as "disposables" but subjected to bio-hazard materials, e.g. diamonds and composite finishing burs, may be tossed primarily due to lower production cost as compared to production cost only 10 years ago. However, "use & toss" can be expensive driving up treatment-cost. A quality diamond bur may cost upward of $10 to $15.00 depending on geographical location. However, such non-disposable items as mentioned can be, and often are autoclaved or gas sterilized and re-used. Heat sterilization quickly dulls carbide and SS burs but it is permissible to sterilize burs for re-use. Many of our instruments are very sharp ...... and expensive too. I perform surgery many times daily. My surgical instruments are "in the thick of battle". They are immersed in blood, guts & gore. Though sharp, with a ubiquitous potential for percutaneous injuries to patients and members of my surgical team, these heavily soiled and bio-ladened instruments are subjected to rigorous cleaning standards after use and prior to sterilization. When dealing with oral and maxillofacial surgery, the very nature of the oral environment predisposes our sterilization-chain to weaknesses. The mouth is not sterile nor can it be made sterile in a *living patient*. Dental explorers, as one example, are very sharp and defined as "sharps" but are not thrown away, rather, properly cleaned and sterilized. Conversely, a surgical drill, or even the conventional high and low speed dental drills, are not sharp however they are being constantly immersed in body parts and body fluids. The inner workings of these "drills" (chuck and bearings) are not impervious to pathogens or bio-burden. Consequently, today's "drills" are designed to be either disassembled and physically and mechanically cleaned, as is the case of slow-speed handpieces, or afforded the ability, in the case of high speed handpieces, of being subjected to stringent ultra-sonic mechanical "cleanings" (using strong organic digestive detergents and disinfectants) prior to sterilization. Mouth mirrors are forever being plunged into "goo" and frequently in juxtaposition with tissue (healthy and diseased). Disposable exam mirrors are being used more frequently but reflective surfaces of these mirrors are poor quality and unsatisfactory for surgery. We really need to see what we are cutting thus we use conventional mirrors when required.

        Often, the informed layman becomes confused. *Their definition* of sharps and bio-waste may be skewed. Dental treatment and/or surgery would be cost prohibitive if everything sharp or soiled were required to be thrown away. A surgical handpiece may cost upward of $5000.00 (with no mention of connecting hoses or electrical leads). Conventional high and low-speed handpieces cost on the order of $1000.00 to $2000.00 depending on geographic location. Pressure cuffs, electrical leads, monitors, etc. are subjected to aerosols generated by rotary instruments hence contamination. All these items carry a hefty price.

        Naturally, I could carry this discussion from the sublime to ridiculous pointing out, for example, stretchers are frequently soiled with feces, urine, vomitus, and blood, with no less emphasis on an entire list of undesirable sources of contamination. Stretchers, operating room tables, flooring, surgical lights, walls, ceilings, doors and such are virtually impossible to *sterilize* but they can be *disinfected*. I suppose disposable Operating Rooms are a possibility but at what cost. Erecting a disposable operating room, while maintaining sterility, would be a daunting task and a logistical nightmare without mention of cost to the patient.

        As long as invasive procedures are performed, nosocomial infections are a reality with which we must contend.

        Just thought I would put in my two cents.

        For those having fought for it, Freedom has a flavor the protected will never know.
        Freedom is only one generation away from extinction.


        • #19
          Dental Implant

          Recently finished a one tooth scenio. Visited with the DDS and compared his definitions and reference of same, to machine talk:

          Morse taper on implant, and miniature racheting torque wrench to apply 13 centermeter-Newtons of torque to set implant in jawbone.

          Not too shocking, but fees tore the heck out of 3G's.



          • #20
            Ordinarily, it takes 35-40 Newton Centimeters of torque to seat an implant. Thirtyfive NC is minimally optimal whereas 40 is the upper limit. Thirteen is quite light. This means the implant is virtually spinning in the osteotomy and this is an undesirable situation. For oseointegration to occur and not a fibrous union (which will certainly lead to failure in nearly all cases) a far tighter interface is need for HA coated implants to osseointegrate. Even if the implant body is buried under closed tissue for 12 to 13 weeks, depending on bone quality, the implant might still fail and be rejected before the abutment is ever placed.

            For those having fought for it, Freedom has a flavor the protected will never know.
            Freedom is only one generation away from extinction.


            • #21
              Burrs and such-like

              Thanks Harold.

              I was aware of most of that as in one of my previous incarnations I was the Facility Officer in a large military establishment. My work was largely to do with - among other things - the maintenance and construction/installation of "Hospital" (including "Medical" and "Dental") facilities - by specialist Contractors. I am aware of the sterile requirements of spaces and objects as well the the means of achieving and maintaining them - autoclaves (all types) included.

              I am aware that you have very comprehensive as well as intimate knowledge of that equipment and procedures including sterilization and disposal - as well as the "cost" rationale'.

              I am not sure that others are.

              For me, if I wanted a sterile burr, I would be damn sure that it had either passed through a sterilisation treatment if used or if new, that it was in a sterile environment in a certified packing that was still within its "use by date".

              Incidental, some of the best and most comprehensive Carpenters and Fitters tool kits I ever saw were in the Operating Theatre sterile confines or in autoclaves that needed to be "got going" (again). Same applies to "Dental". Some of the "Tools" in the medical/dental museums etc. would make some quite ill just thinking about it!!

              The new Hospital Dental section had lead-lining on the wall-board and doors. I was told that it was necessary to contain the "radiation" (X-Ray etc.) within the Surgeries (from those in the waiting rooms and corridors). Needless to say it didn't take long for "Radiation" to be supplanted by "noise/screams".

              Needless to say I had no problem getting "sharps" (mainly scalpels and blades - and burrs) for my "use" still in the original (and "in date") wrappings etc.

              Further, as I was told and found out very early in life, the true-ism that it is more often than not that it is the blunt rather than the sharp knife that does the damage (improper use) - I don't use blunt tools - "burrs" included.

              Perhaps the previous paragraph related more to the "dull" user than the dull tool/cutter/burr etc.

              None of my hand cutting tools are put away "blunt" as they "stay out" until I sharpen them. That way I always have a sharp tool when I pick it from its stowage.

              I'd like to think that I am as sharp (well, often enough anyway) as my tools.

              As for burrs, I just go and buy a $50 pack of TC burrs of various kinds from a local tool supplier. As soon as I sense the tool (usually a die-grinder) has to work harder the burr comes out and goes straight into the garbage bin in the shop.


              • #22
                Very informative!

                As someone that is going to recieve an implant in less than a week, I find your posts on this subject very informative.

                However, referring to the quote below, that indicates to me that your incision may have gone astray if guts are involved. I prefer an abdominal surgeon for surgery in that area!
                Originally posted by hwingo
                They are immersed in blood, guts & gore.


                • #23


                  just make sure that the person doing your "insert" is not a Veterinary Surgeon (aka "Vet").

                  After reading that post of yours, that procedure that Harold was talking about does seem very similar to an artificial insemination (AI) of a cow!! - with cow with its head in a bail - and more than a bit apprehensive - AI person (a "Vet" - usually but not always) with shirt sleeve rolled up to the arm-pit and full arms-length gloves on (sometimes no gloves - or clothes above the waist), cow bellowing like hell, then "whack" - right up to the shoulder and job done.

                  Cow, which had the job done, was not all that unhappy afterward, but the bull which was tethered and looking on was not pleased at all - and let us all know it!!!


                  • #24
                    Well CRAP! I inadvertently discontinued my instant email notification for this thread so I am writing this to get "re-enrolled" in the thread. Duh!

                    For those having fought for it, Freedom has a flavor the protected will never know.
                    Freedom is only one generation away from extinction.


                    • #25
                      "Pirated" thread


                      if there is any more (or not too much) "blood and guts and gore" and hacking and stabbing, George B might transfer it to the "Pirate" thread.

                      From my reading of other threads, some here are as tight as a fish's ar$e as regards spending money and getting a $ out of 'em would be worse than pulling tooth a tooth - or three!! - (NOT "wisdom" teeth as they are long gone). I'd suggest a good dose of root canal work TO and not BY them if for no other reason than to knock off the snots 'n' burrs - and sundry rough edges!

                      Incidentally, in that Medical/Dental complex I spoke of earlier were the two best golfing teams in the Establishment - first the Dentists and next the Doctors. It seemed that is was the same in some of the other Establishments too.