1. ESCO - The Electronic Study Club for Orthodontics
2. Open minded pragmatist
3. ESCO Digest - 26 Jan 2003 to 3 Feb 2003 (#2003-5)
4. New employee
5. SASSOUNI (3)
6. Need address
7. University Bookstore


Dear Colleague:

The Electronic Study Club for Orthodontics (ESCO) is a free forum for exchange of information and opinions among orthodontists, and for distribution of professional information, sponsored by the Department of Orthodontics, University of Illinois at Chicago.  Information distributed on this list-server is NOT edited or refereed, and it represents only the opinions of the writers of the individual messages. Such writers bear the sole responsibility for the content of messages they author.  Authors are required to verify information regarding other parties included in their messages.  

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Sincerely,

Joseph H. Zernik, D.M.D. Ph.D.
Professor of Orthodontics
http://home.earthlink.net/~jz12345/index.html


From: Orthodmd@AOL.COM
Sent: Tue 2/4/2003 9:19 AM
Subject: Open minded pragmatist

In a message dated 2/4/03 1:14:30 AM Eastern Standard Time, LISTSERV@LISTSERV.UIC.EDU writes:


> This is for Charlie Ruff: Thanks a lot for you kind words in my absence. I
> love your statement about recruiting you to the dark side, but I have to say
> it was possible only because you are such an open-minded pragmatist. (You've
> probably been called worse!)  Regarding the paucity of Tip Edge practitioners,
> I have my own ideas, but that's for another time.



Mort,

I've just added a codicil to my will asking that "open-minded pragmatist" by my epitaph.  I just can't decide whether I should include the part about being called worse.

As in "Here lies Charlie Ruff, open-minded pragmatist, or worse"

I kind of like that.

Best wishes to all

Charlie Ruff


From: Orthodmd@AOL.COM
Sent: Tue 2/4/2003 9:20 AM
Subject: Re: ESCO Digest - 26 Jan 2003 to 3 Feb 2003 (#2003-5)

In a message dated 2/4/03 1:14:30 AM Eastern Standard Time, LISTSERV@LISTSERV.UIC.EDU writes:


>Where the bulk is large and obvious, I use a high speed with coolant.


Absolutely no question that a course diamond with water coolant is the way to go.

Charlie Ruff


From: Orthodmd@AOL.COM
Sent: Tue 2/4/2003 9:26 AM
Subject: new employee

I recently hired the father of my clinical supervisor to trim models and sharpen instruments. He is a recently retired machinist who has been telling me for years he wanted to work for me part time when he retired.

The most interesting part of the story is his wife's comments to her daughter. My clinical supervisior had a set of models made of her teeth for her father to practice on. He apparently keeps those in the kitchen and shows them to whomever visits with the statement "Look what I did. Kind of neat."

I think that tells it all. There are a lot of people out there that would love to be productive on a part time basis. The only trouble I see is the full time lab person looking over her shoulder listening for the approach of the competition.

Best wishes to all

Charlie Ruff


From: PAUL JOHNSON [p8johnson@YAHOO.COM]
Sent: Sun 2/16/2003 1:32 PM
Subject: SASSOUNI

S 4

P. 3 Edited:

DEFINITION: Any combination of maxillary protrusion and/or

mandibular retrusion is called "Skeletal Class II."

Any combination of maxillary retrusion and/or

mandibular protrusion is called "Skeletal Class III."

EVALUATION OF POSTERIOR BALANCE:

The posterior arc from Sp (most posterior contour of Sella Turcica) should pass through Gonion. This permits us to evaluate the Antero-posterior position of Gonion

SIZE OF CORPUS:

If Gonion is located on the posterior arc and Pogonion on the anterior arc, it means that the corpus length is equal to the cranial base (Sp to Na). This is usually the case at the12 year level. Before 12 years it is smaller. After 12 years the corpus is larger than the cranial base.

The shortness of the corpus in the anterior segment is more influential on the malocclusion and the profile than the same degree of shortness posteriorly

VERTICAL BALANCE:

Anterior: Anterior upper and lower face heights should be equal.

Posterior: Posterior upper and lower face heights should be equal.

S 5 To follow:

E-mail has been sent to Elsevier Science for permission to copy some material from their textbook, which was referred to earlier.

There is a nice drawing about the vertical lines to locate Center O.

S 3 This is p 2 of 3 of the class handout (seventies). 12 font changed to 14 expanded it to two pages. There has been a little editing updating to the way these basics evolved for me.

If there is anything that does not make sense, an e-mail would be an easy way for me to clarify.

This analysis was an aid to my diagnosis.

Continued from p 1 (S 2):

d. POSTERIOR ARC: From the same center 0 and from the most posterior point on the contour of Sella Turcica (Sp) draw an arc that intersects all planes.

4. Vertical Proportions:

a. ANTERIOR VERTICAL PROPORTIONS: Put the point of the compass on ANS and open the compass up to Supraorbitale. Then transfer this dimension by rotating the compass until it intersects the anterior arc at the level of menton.

b. POSTERIOR VERTICAL PROPORTIONS: Put the point of the compass on PNS and open the compass up to the point of intersection of the posterior arc with the parallel plane (parallel to the supraorbital plane). Then transfer this dimension by rotating the

compass until it intersects the posterior arc at the level of gonion.

1. EVALUATION OF THE PLANES:

The more the planes are parallel to each other = deep bite  skeletal.

The more the planes are steep to each other = open bite  skeletal.


2. EVALUATION OF CENTER "0:

The farther center 0 from the profile = skeletal deep bite.

The closer center 0 to the profile = skeletal open bite.

The higher center 0 = skeletal open bite.

The lower center 0 = skeletal Class II.

During growth from 4 years of age to adulthood, center 0 moves  downward and backward (from an intra cranial position above  foramen magnum to an extra cranial position below foramen  magnum).

3. EVALUATION OF. THE PROFILE ANTERO-POSTERIORLY:

ANS, Is, and Pog should be located on the Anterior arc (from  Na). The anterior arc is a reference line that permits the  evaluation of the deviations of these landmarks from normal.

a) If ANS and Pog are both posterior to the anterior arc by an equal amount the profile is "retro-archial" which essentially is normal. This situation may be due to the fact that Nasion is too far anterior.

b) If ANS is situated on the anterior arc and Pog is not, there are two possibilities:

1) Pog is anterior to the arc: this means a chin protrusion or a mandibular protrusion.

2) Pogonion is posterior to the arc: this means an absence of chin (mental protuberance) or a mandibular retrusion.

c) If Pog is situated on the anterior arc and ANS is not, there are  two possibilities:

1) ANS is anterior to the arc: this means a maxillary protrusion.

2) ANS is posterior to the arc: this means a maxillary Retrusion.

Paul Johnson

Tustin, CA


From: Nasreddine Tsouria Belaid [tsouria@HOTMAIL.COM]
Sent: Mon 2/10/2003 4:03 PM
Subject: need address

Dear colleagues,
do you know address of orthodontists practising the segmented arch technic of Dr Charles Burstone in Geneva(Switzerland)?
Thank you.Warmest regards.

Dr N.Tsouria-Belaid
orthodontist Oran-Algeria


From: Charles J. Ruff [orthodmd@PREXAR.COM]
Sent: Wed 2/12/2003 6:34 AM
Subject: University Bookstore

Dear All,

Recently, I did a breakfast and learn with Dr. Jens Andreasen. I asked him about books that were out of print and he said some of them are still available from the University Bookstore. I assume he meant the University of Copenhagen or Aarhus. Can anyone help me with either a mailing or internet address for those two schools or other help in contacting the bookstores at each place.

Thanks

Charlie Ruff