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AnonymousSpectatorAnother amalgam removal-
Receptionist had old DO amalgam on 13 with recurrent ,moderately deep decay, disto-lingual. Asked if we could do it ‘like the kid yesterday’ .
Bathed tooth 5.25 90/90 for 1 minute. High speed removal of amalgam. Because of limited time (staff gets cancellation time for their work)decided to rebathe tooth w/ laser again 5.25 90/90 and finished prep with high and low handpieces, rather than laser. Pt only felt slight sensation at very end when I went subgingival. Later told me that if I had any more to do there she would have wanted to rebathe with laser , not inject.
I kept expecting her to want to be numbed up, but even prepping at the DEJ -no painIt seemed like I could prep for an amount of time roughly equivilent to the time that was spent bathing the tooth. For those of you doing amalgam removal , how about keeping track of time bathing the tooth with the laser vs. prep time and see if we can find a correlation?
lagunabbSpectatorI posted this info on the Dental Town chat room. I feel it is important for purchasers of laser systems to be aware of it. The FDA sent a warning letter to ADT in mid-April after a tour of their manufacturing facilities. Not all of the problems were listed in the letter and another letter was to follow. The link of the FDA letter is here:
http://www.fda.gov/foi/warning_letters/g3213d.pdf
Even more disturbing to me, being in the investment business, is that ADT did not disclose the FDA findings to creditors and investors that were trying to help out the company. They did a 軸,000 financing and file the S-3 registration with the SEC on May 6, 2002. The link of the SEC filing is here:
http://www.sec.gov/Archives/edgar/data/874388/000091205702018626/a2079070zs-3.txt
As I stated on Dental Town, I cannot fathom a scenario where excluding this information is proper under those circumstances.
In conclusion, buyers and investors beware.
2thlaserSpectatorCount me in! What a great post. I am so impressed. I will keep track too. That was so cool to do yesterday. Thanks Ron.
Mark
Robert Gregg DDSSpectatorHi Ron–
What was the rationale for treating the pockets a second time after one week? Who recommended that to you and what are the clinical study references to support such a methodlogy?
I mean, I remember when we started out doing pocket “sterilization” (as it was called back then), we were so uncertain of the effects of our lasers in a “blind” procedure, that we did not want the patients numb so that they could report any discomfort (i.e. heat build-up).
That was then the thinking 13 years ago, when basic science and clincal studies had not been conducted. Fast forward a decade: I hope the laser field has progressed beyond guesswork after all this time.
The research that Del McCarthy and I have been working on since 1989 has been focused on the optimal near-infrared “light dose” per millimeter pocket depth involved in the treatment of inflammatory periodontal disease. Our clinical investigations–peer reviewed and published–have demonstrated that is 10 to 16 Joules per mm pocket depth (WITH SOME VERY IMPORTANT EXCEPTIONS). We treat the pocket ONCE with anesthesia and do NOT re-enter the area for at least 6 months, usually 12 months. That’s how long it takes for bone and ligament to mature (think implants).
We have published our protocol several times. If you want to access them readily they are at <a href="http://www.millenniumdental.com/research.html
Let” target=”_blank”>http://www.millenniumdental.com/research.html
Let me know.:)
Bob
Robert Gregg DDSSpectatorQUOTEAnyone have a theory on the physiological mechanism behind anesthesia using the “defocused” technique? How does the laser energy numb the tooth when we bathe for 45 secs to a minute?Bob, can you help with your long term laser knowledge?
Al–
The answer is: nobody really knows.
The answer Mark gave is the understanding we accepted in-the-olden-days, and is as good an answer as we have today.
I think it is probably a combination of phenomenon’s. Like Mark said, the cell membranes appear to become more permeable to calcium, sodium, potassium. Same with nerve cells in the pulp.
Dr. Paul Bradley from the UK would say that the light has a direct effect on non-mylenated C-fibers in modulating or eliminating a pain impulse. Possibly through inhibition of protein systhesis of pain chemicals.
My partner and I have theorized that proteins involved in localized pain in tissue are denatured and inactivated.
Russian researcher Tina Karu has done a lot of work trying to understand the cellular basis and nature of LLLT (Low Level Laser Therapy)–aka biostimulation. She has written a book that I think can be ordered on Amazon.com.
Some anti-laser people like Doug Dederich, DDS, MS, PhD, B.F.D., Head of perio at LSU has a theory we are coagulating pulps, and that’s why we can desensitize teeth and numb them before prepping. He clearly hasn’t used a pulsed Nd or Er:YAG clinically. If he had, he would have observed the sensation of teeth returns following laser analgesia–sometimes before we are through prepping!
From my experience and talking with thoughtful and sincere folks like Bradley, it seems to be most effective (limited?) to the infrared, both near, mid, as well as far. For example, blue/green Argon was very disappointing in numbing tissue.
You know, if you all want to take your tooth numbing one step further, try numbing the tissue near the Greater Palatine Nerve or the Incisive Canal next time you need to numb the palatal tissues. You can even paint on topical and lase for better uptake and effect. Nice for “pain-free” palatal injections!
Great question. No great answers. But Dederich’s theory is pure poppycock!
I don’t know he mechanism for symptomatic relief when I scratch an itch–I do know it works, however anecdotally that may be….
Bob
Robert Gregg DDSSpectatorDear José —
I don’t like diodes, primarily because they are continuous wave (CW) with a gated pulse (interupted beam) capability. They don’t give me the control that a free-running pulsed laser can.
But if there were no pulsed Nd:YAGs–for both hard tissue and the best soft tissue effects by far;) –I would prefer the Ceralase over other wavelengths and devices:
–German made
–Joule counter
–Power calibration
–Timer
–980 versus 810nmThe price is good for that device. You do get what you pay for….There are no cheap erbiums!
Roberto
(How’d I do Mike?)
AnonymousSpectatorBob, I’m sure my answers will be inadequate, but I’ll try.
QUOTEQuote: from Robert Gregg DDS on 5:26 am on Nov. 8, 2002
Hi Ron–What was the rationale for treating the pockets a second time after one week?
I should have added in my post that the follow up tx is delivered 1mm shorter than the original pocket tx depth and the objective ,as I understand it ,is to just vaporize the bugs at this time, not remove tissue.Who recommended that to you and what are the clinical study references to support such a methodlogy?
This protocol (hopefully, my notes and observations are accurate), come from various presentations at the Biolase symposium in Fla. earlier this year and also from a visit to Bob Barr’s office recently.I’m sure you’ve done enough medline searches to know what the chances are of finding a study to back this up – at least I haven’t found any – but I’m sure you were asked the same thing when you started using the laser for perio therapy and could not provide any for your wavelength either.I mean, I remember when we started out doing pocket “sterilization” (as it was called back then), we were so uncertain of the effects of our lasers in a “blind” procedure, that we did not want the patients numb so that they could report any discomfort (i.e. heat build-up).
That was then the thinking 13 years ago, when basic science and clincal studies had not been conducted. Fast forward a decade: I hope the laser field has progressed beyond guesswork after all this time.
The research that Del McCarthy and I have been working on since 1989 has been focused on the optimal near-infrared “light dose” per millimeter pocket depth involved in the treatment of inflammatory periodontal disease. Our clinical investigations–peer reviewed and published–have demonstrated that is 10 to 16 Joules per mm pocket depth (WITH SOME VERY IMPORTANT EXCEPTIONS). We treat the pocket ONCE with anesthesia and do NOT re-enter the area for at least 6 months, usually 12 months. That’s how long it takes for bone and ligament to mature (think implants).
Does this mean just no entry into the pocket with the laser? or for hyg. recall as well? Sorry its been awhile since I read your published articles (which I really appreciated and have to say were a major influence in my wanting to get involved in using lasers for perio tx. I would also add that if my money were unlimited after buying the Waterlase for hard tissue Tx , that I knew then what I know now,I would have gone your route and laser type and training because from what I have seen your company really has a better handle on the delivery of training.
We have published our protocol several times. If you want to access them readily they are at <a href="http://www.millenniumdental.com/research.html
Let” target=”_blank”>http://www.millenniumdental.com/research.html[/color]
Let me know.:)
Bob
I’ll review the articles again. I had to laugh a little when I read your post this morning ,as last night I had just encouraged more participation in another post .I had also added that people shouldn’t be afraid to post, because if they were going to get nailed for ignorance ,I’d have gotten it along time ago . Bob, I can tell your words were probably measured in your reply and I appreciate your input and patience with me.
Robert Gregg DDSSpectatorRon–
Oh my…..I seem to have offended you. I’ve been given the RED letter treatment!
My apology if I came across as having “nailed” you for ignorance. That certainly was not my intent. I know your experience level, and I wasn’t trying to embarass you. What would be the point?
I saw and responded to your post about usage. With 50 members, we are quite a bit more intimate here, and I was trying to get to the essence of your question to better help you out. I try not to go off “half-cocked” and try to get as much info before I make a statement or recommendation. Sorry it did not come across more diplomatically. I thought my smiley face expressed my state-of-mind……..:)
I really wasn’t measured or restrained at all. It was late and the Vicodin was wearing off after having the wires yanked out of my heal and Achilles tendon earlier that day……But recovering from surgery gives me lots of time, rest and patience that I don’t usually have when I am practicing full time and not flat on my back. So my post was “unvarnished” and casual. Oops.
That’s how Del McCarthy and I talk to, ask questions and really challenge each other. We assume nothing–accept nothing–even from each other, to this day unless there is a good rationale. I brought you into that state of thinking and problem solving. It had the wrong effect. Sorry.
I knew you recently returned from some training. I was asking questions for an understanding of where you were coming from, who told you what, how, and why you should do certain things, so I could better understand the rationale for the technique you were taught, and what I could recommend. You know…where you got your information on technique and application and what documentation, references, abstracts, clinical case studies–anything–that was given to you to support it–a Technique Guide, Steps Sequence, Recipe something. That’s all. Too bad the written word does not come with intonation and expressions!
It was, I guess a three part question about technique and instruction and written support. After all, I asked about “clinical study references”, not peer reviewed references, or even published papers.
Even when we were all first learning in the early 1990’s–and before espousing any technique, we had folks like Marshall Midda, BdS from UK an internationally renowned periodontist (now deceased), Herb Bader, DDS, MS a periodontist at Harvard, John Horton, DDS, MS a world renowned periodontist from Ohio State, and others like periodontists Steve Gold, DDS, MS, Mario Valardi, DDS, MS and Stuart Epstein, DDS, MS as well as Joel White DDS, MS at UCSF that conducted research into the periodontal use of pulsed Nd:YAGs.
So even in the days when research was sparse, we knew these researchers on a first name basis, they presented their ongoing research and preliminary findings at the early pre-ALD meetings. So we had a basis for doing what we were doing. These abstracts and papers are available, as are much more recent papers. I wanted to know if you had been given them in some form or another? If not, I’ve got them available and could provide them if you weren’t given them…..
I gain nothing from belittling you or anyone else. But I come from a perspective on laser periodontal treatment where we have been intensely dedicated to researching and understanding over quite a long period of time. But aside from our work and publications, it does surprise me that other Educators, Pundits, Mentors, and Gurus who purport to teach laser perio, don’t provide much written support for those claims or written technique guide or a Power Point presentation outline–because I know they do exist.
Etiquettely challenged,
Bob
AnonymousSpectatorBob,
I guess one of the problems with message boards is that it is sometimes hard to perceive the true meaning behind the words. I wasn’t offended at all and my reply to you used red letters because that’s the color that was in the ikoncode when I copied and pasted. I actually appreciated the challenge because I know that’s how I’ll really learn things.
I’m off to dinner now , but later I’ll try and put together some of the things I’ve read and why I felt comfortable following the advice I was given.
In the meantime why not go back and edit your post as an apology was not necessary,my response was not out of any offense, and I appreciate your explanation and concern about possilbly having offended me.
AND … anytime you think I’m screwing up and have it coming…. let me have it!I also apologize for my post that didn’t come across as intended.It says alot abut your character, that with your knowledge of lasers, you would even be concerned about offending someone with very little knowledge or experience.
[just remember- as webmaster if I disagree with any of the posts I can just zap them and make them disappear 😉 – just kidding all!]
AnonymousSpectatorQUOTEQuote: from Robert Gregg DDS on 5:26 am on Nov. 8, 2002
Hi Ron–What was the rationale for treating the pockets a second time after one week? Who recommended that to you and what are the clinical study references to support such a methodlogy?
Her’e what I’m basing my thinking on;
In the Dental Clinics of NA there is a review of several studies regarding laser de-epithelialization and enhanced guided tissue regeneration. The procedures involved an initial flap procedure and repeated de-epi to prevent down growth of the epithelium thus getting healing from the bottom up rather than top down trying to avoid a long junctional epithelium attachment.
I think I will skip the charring and external de-epi thoughSecondly, other studies show using decomtamination settings to zap the bacteria should help minimize the inflamation caused by the pathogens (Inhibitory effect of low-level laser irradiation on LPS-stimulated prostaglandin E2 production and cyclooxygenase-2 in human gingival fibroblasts.
Sakurai Y, Yamaguchi M, Abiko Y.
Department of Biochemistry, Nihon University School of Dentistry at Matsudo, Chiba, Japan.http://www.ncbi.nlm.nih.gov/entrez….bstract)(Bacterial reduction in periodontal pockets through irradiation with a diode laser: a pilot study.
Moritz A, Gutknecht N, Doertbudak O, Goharkhay K, Schoop U, Schauer P, Sperr W.
Department of Conservative Dentistry, Dental School, University of Vienna, Austria.)http://www.ncbi.nlm.nih.gov/entrez….bstractSo to kind of sunmmarize-
1.deepithelialization to remove inflamed tissue
2.decomtamination (each successive appt 1mm shorter) to zap he bugs, not disturb the healing in the bottom most area to help heal bottom up for better chance of reattachment instead of just a long junctional epithelium
3. no reprobing for 6 mths so as to not disturb new attachment formationInput or sugestions welcome!
AnonymousSpectatorQUOTEQuote: from Robert Gregg DDS on 6:19 am on Nov. 8, 2002Some anti-laser people like Doug Dederich, DDS, MS, PhD, B.F.D., Head of perio at LSU has a theory we are coagulating pulps, and that’s why we can desensitize teeth and numb them before prepping. He clearly hasn’t used a pulsed Nd or Er:YAG clinically. If he had, he would have observed the sensation of teeth returns following laser analgesia–sometimes before we are through prepping!
BobPulpal thermal responses to an erbium,chromium: YSGG pulsed laser hydrokinetic system.
Rizoiu I, Kohanghadosh F, Kimmel AI, Eversole LR.
UCLA School of Dentistry, USA.Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1998 Aug;86(2):220-3
RESULTS: Pulpal temperatures associated with the hydrokinetic system either showed no change or decreased by up to 2 degrees C. Wet bur preparations resulted in a 3 degrees to 4 degrees C rise. With dry bur preparations, a 14 degrees C rise in temperature was recorded.
socalsamSpectatorGuys,
thanks so much for all the information. I am getting my Waterlase Tuesday and I cant wait.
I am reading up as much as possible so that I can jump into this thing with both feet. Already have a couple of crown lengthening procedures lined up for the laser as well as some easy class V’s to get started.
I am sure I will have a ton of questions as I get more and more into this so hopefully you guys wont mind me asking you here.
BTW, Biolase will have several speakers at the Dentaltown meeting. They are even considering doing some sort of proficiency course there as well. If you guys are on the edge, consider coming to the meeting. http://www.towniemeeting.com
thanks.
2thlaserSpectatorSameer,
Congrats,and welcome to the Erbium world! I would be happy to help you anytime, just contact me. Sorry I can’t be at the Extravaganza, I am headed to the UK to teach and lecture on those dates. Fill me in though, feed us guys who can’t be there for legitimate reasons what you learn there ok?
Sincerely,
Mark
socalsamSpectatorYou bet Mark. I will certainly do that.
PatricioSpectatorGlenn,
Since I have 11 months into laser use I am just beginning to add new potential uses which will fall to the bottom line. I want to say that I am following someones advise to strongly market the laser. This has been very positive and our new patient calls have possibly doubled our new patient exams. So we are developing income more indirectly. I have started charging for the tissue work which I was giving away. At the same time that service is more predicable and conficent in my hands so it is time to charge.
Your leadership and the other veterans posting have moved me light years ahead of where I would have been. Thanks.
Pat
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