|Date:||Wednesday, September 26, 2007 11:14 PM|
|From:||"ESCO automatic digest system" <LISTSERV@LISTSERV.UIC.EDU>|
|Subject:||ESCO Digest - 24 Sep 2007 to 26 Sep 2007 (#2007-71)|
There are 5 messages totalling 265 lines in this issue.
Topics of the day:
1. Plastic surgery/arch distortion
2. Re: APC precoats
3. Re: APC precoats
4. TAD's for missing laterals
|Date:||Wednesday, September 26, 2007 11:53 AM|
|From:||SCOTT SMORON <scottsmoron@COMCAST.NET>|
|Subject:||Plastic surgery/arch distortion|
The first thing I would ask is where are they as far as plastic surgery
goes? I know it's tough to broach this subject on the multiple surgery
patients, but sometimes the plastic surgeons have been quietly trying to
lobby for an additional revision that the family is avoiding, and having one
more person say, "I can't really create an ideal smile without some help" is
enough to have them follow up.
When I was at Northwestern University, I sometimes got to listen to two
plastic surgeons during cleft exams. One had more focus on muscular tissues
and one had more focus on the mucosa/overlying tissue. Once the patient
left the room, to listen to these two talk about the options was very
interesting. So perhaps another set of surgical eyes looking at the
situation might be able to improve what you are dealing with and make the
patient's life better.
Mechanically, I would be thinking maintaining arch form would be best so you
stay within the envelope of what the body will allow, although you could
pursue modification with more extensive fixed retention, like canine to
canine on top and premolar to premolar on the bottom.
Love to see some photos if you can. Sounds interesting.
|Date:||Wednesday, September 26, 2007 12:58 AM|
|From:||Dr P. Miles <pmiles@BEAUTIFULSMILES.COM.AU>|
|Subject:||Re: APC precoats|
Hi Charlie & group
I am aware of some laboratory studies using precoated and manually
coated brackets which show a trend for a slightly higher bond strength
for Transbond manually coated brackets versus APC. (E.g. Bishara SE,
Olsen M, VonWald L. Comparisons of shear bond strength of precoated and
uncoated brackets. Am J Orthod Dentofacial Orthop 1997;112:617-21.; JW
James, BH Miller, JD English, LP Tadlock, PH Buschang. Effects of
high-speed curing devices on shear bond strength and microleakage of
orthodontic brackets Am J Orthod Dentofacial Orthop 2003;123:555-561).
However, the APC had less variation in bond strength (possibly due to
being precoated?) and it has since changed to APC II and APC Plus.
Laboratory studies are also weaker than clinical evidence but clinical
studies are sparse.
Clinically I use APC II routinely with an indirect bonding technique and
noted no higher failure rate than with our previous Transbond or APC
brackets (all ~2% bracket failure rate) which we have clinically trialed
and published (Miles PG, Weyant RJ "A comparison of two indirect bonding
adhesives." Angle Orthod. 2005;75:1019-1023. Miles PG, Weyant RJ "A
clinical comparison of two chemically-cured adhesives used for indirect
bonding." J Orthod. 2003;30:331-336. Miles PG "A comparison of retention
rates of brackets with thermally-cured and light-cured custom bases in
indirect bonding procedures." Australian Orthod J. 2000;16:115-7.)
However APC Plus is not suitable for Indirect Bonding as it does have a
higher failure rate due to being hydrophilic). I hope this helps -
perhaps you could conduct your own split-mouth clinical trial on the 2
|Date:||Tuesday, September 25, 2007 6:46 PM|
|From:||Kevin Jarrell <kjarrell@SPRYNET.COM>|
|Subject:||Re: APC precoats|
Strictly an anecdotal comment, but I did a little experimentation with different bracket systems and I FEEL like there are more bond failures with the precoated Unitek brackets than traditional buttering.
Again, not a scientific study, but I seem to rebond more of them than others.
|Date:||Tuesday, September 25, 2007 1:33 PM|
|From:||Karen Reisner <karenreisner@GMAIL.COM>|
|Subject:||TAD's for missing laterals|
I am new to the group and I have a question. Has anyone out there used a TAD for missing maxillary laterals. I have a bunch of patients with missing laterals. While we are waiting for the majority of growth to cease, and before placing the permanent implant, I was wondering if anyone has tried using a TAD and some kind of esthetic crown. If anyone has tried this, I would like to know their experience with this regarding bone-level and ease into replacing TAD with implant at a later date.
|Date:||Tuesday, September 25, 2007 10:17 AM|
Does anyone have any experience with the Forsus appliance for class II correction?
Ilan Shamus, DDS
Armonk, New York