Topics of the day:
1. Brand Name wires VS discount wires
Dear Dr Wachspress,
Unfortunately, I don't know any clinical trial on Brand names wires versus discount ones. Let me share with you my experience on this subject
1 ) About NiTi wires :
A friend of mine, Dr Louis Dorval, Quebec city, made an extensive unpublished lab research for his Master at Montreal University on this subject. He found huge differences between the brands in terms of elasticity. The best wires were Ormco Cu-Niti, followed by Ormco Niti and GAC Sentalloy, these last two with equal results. Even 3M thermoactivated wires were performing badly compared to regular Ormco or GAC Niti ! discount wires had also poor results... Dr Dorval also found than the elastic properties of Sentalloy or Ormco NiTi were accurate for 95 % of clinical situations and recommended the use of 35 °C Cu Niti Ormco for Perio cases and cases with tooth resorption.
Clinically, I found a total correlation between these lab results and my clinical cases : discount wires are really less effective than Sentalloy or Ormco Niti. (I use mainly Speed self ligating brackets). So my attitude now is :
- small amounts of crowding, with no perio problems or resorption : discount wires round and rectangular
2 ) About Titane Molybdene wires :
An other friend of mine, Dr Louis Cadotte, Trois Rivières, Quebec, made the same lab study than Dr Dorval. He found that the only wire with an excellent spring back was Ormco TMA. Cerum CNA had also good results, although inferior to TMA.
Clinically, I think the choice for TMA versus other brands or discount names depend on the use you need. Cinically, I use them to :
- TPA to derotate upper molars : I make them from Masel or Lancer straight "TMA" 032 wire. I don't see any difference in efficiency with Ormco TMA.
I hope this will help and I 'm waiting for other comments ! Best regards to all !
Jérôme Wanono, DDS, Msc Ortho.
I read an article that said removing the deciduous molars to allow for space closure when the adult second bicuspids are missing is much more successful if they are removed by a young age. I don't remember what that age was and I am unable to find the article. What is the consensus on removing deciduous molars early in these cases? I have a 7y.o. male patient missing all second bicuspids. He would not be a good extraction case and if he were older, I would plan to implant the bicuspids (and maybe I still should). I am thinking that he is young enough to treat him without implants. Worst case scenario would be that I have to open some space back up again for implants. Any thoughts?
I too was on Orthotrac Classic for many years and found the Unix platform to be bulletproof. I switched to the Windows version and Imaging about 5 years ago. I run chairside charting, check-in, Televox, a digital pan/ceph, etc. off of Windows XP. So far the only issues we have had is that the servers have had to be upgraded twice with additional memory. Orthotrac service is pretty good but very expensive.
True TTL Flash metering seems to be only available on certain SLR cameras. I use both the Nikon D100 and Fuji S1 (supposedly the "SAME" engine/body) cameras. I picked up a TTL module from CLINIPIX (561-793-4142) at the AAO meeting in Orlando last year. This module lets GENERIC ring flash units to operate in TTL mode only on the FUJI S1 and S2 cameras. No one can tell me why it won't work with my NIKON D100.
So now the FUJI S1 is the preferred Clinical camera. The flash - thanks to TTL - recharges in next to no time and every shot is perfect. I still use f38 for intra-oral shots - so regarding the question on over-exposed images - just increase the f-stop. Again with TTL - I could probably take all my pictures at the one f stop - say about f27.
John Mamutil, Orthodontist
BAULKHAM HILLS, AUSTRALIA
JCO May 2005 issue.
(Please see attached PDF file)
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