Topics of the day:

1. RE: chin cup
2. RE: Lower implants
3. Screw implants
4. Extraoral appliances for adults
5. Corticocotomies
6. I.T. Guy
7. Sassouni cephalometric analysis
8. AJO-DO January 2004, Vol. 125, No. 1
9. ESCO - The Electronic Study Club for Orthodontics


From: "Azhar Kharsa" <>
To: "Jose Luiz Villaca Avoglio" <>
Subject: Re: chin cup
Date: Mon, 12 Jan 2004 12:57:40 +0200
Hi Jose
I mentioned in my email on ESCO, that force whose amount is less than 400g. per side have been used, I'm fully convinced with what you have said about that forces which are expected to influence on the aspects of teeth on an intrusive effect. However, I coincided a case of "Long Face", Class III, and "skeletal" Open bite, that case had been treated previously by surgical retraction onto the mandible, however, I found out later that the insertion of Chin-cup with forces about 350g. per side had been so helpful as it compensated the recurrence effect of the structural mussels. In spite of that, the effect is still orthodontic and not orthopedic.
That case had a better consequence later.
As for that, I mentioned a little higher average than what you did, nonetheless, I think it's not a matter, as it depends on each case and the way of forces dissipation.
Thank you. 

From: "Paul M Thomas" <>
To: "'The Electronic Study Club for Orthodontics'" <ESCO@LISTSERV.UIC.EDU>
Subject: RE: Lower implants
Date: Sat, 10 Jan 2004 10:32:18 -0000
Dear Dr. Kahn,

I think a response is dependent on age of patient and other factors 
such as occlusal classification, crowding, other missing teeth etc.  What do 
you mean by lower implants?  If you mean one of the temporary screw or 
plate systems, then it may make sense to try to protract the second and 
possibly third molar or otherwise use the space in the process of treatment.  If 
you are asking about the use of osseointegrated fixtures in the retromolar 
area (eg as Gene Roberts has described) then this makes little sense.  
Single tooth implants are reliable restorations.  Why not restore the area 
with a single tooth fixture rather than fiddle about for a considerable amount 
of time trying to drag a molar forward? Unless there is another indication 
for orthodontic treatment, using an osseointegrated fixture as anchorage to
simply close a molar extraction space is not good economics.

Kindest Regards,

Paul M Thomas, DMD, MS
Senior Research Fellow:
Eastman Dental Institute
for Oral Healthcare Sciences 

Date: Thu, 8 Jan 2004 12:35:19 EST 
Subject: Lower implants 

Dear Group,
Does anyone has experience with lower implants for closing missing 
first molar spaces? I have used palatal implants for anchorage, but I have 
not used lower non-dental anchorage. I have many patients with missing 
lower first molars that would rather close the space than restore it. Any
experience you can share?

Date: Sun, 11 Jan 2004 17:02:56 EST
Subject: Screw implants

With regard to the question on screw implants, I am currently using them on a few patients. The main problems I have encountered are:

1. If the screw head is near or in sulcus mucosa as opposed to attached gingiva, the tissues get irritated and grows over the head.
3. The screw needs to be placed in good quality bone, e.g. where the maxillary molars are absent and the sinus dips down, you cannot place a screw on the ridge. However, you can place it off the ridge on the palatal side, the bone is thicker and more dense.
4, Position and access. If a screw is placed distal to a maxillary molar with the intention of moving this tooth distally, as the tooth moves distally access to the screw becomes more difficult. Leave yourself adequate space.

Hope this is of some assistance.

Kim Mizrahi

Date: Sat, 10 Jan 2004 10:59:18 EST
Subject: Extraoral appliances for adults

After reading you comments about "chin cups in adults" and the lack of reports in the literature supporting that technque in adults, four thoughts came to mind:
1. most adults, at least in the West, wouldn't probably wear a headgear of any type enough hours to make them work
2. is eight hours really theraputic?  seems like we tell kids that that is really not enough to make adifference in so far as elastics are concerned
3. is what is really happening just a lack of growth in adults and therefore the post op changes are less than in a teen. I personally believe that to be the case.  Many high angle adults seem easier to treat and control the vertical on than growing patients.
4. going back to 1. above, if you are really convincing your adult patients to wear a headgear, are you in some way related to the President of Syria, Bashar al-Assad, and have the use of his Secret Police?  :-)
Charlie Ruff
PS  it is great to be back!


Date: Sun, 11 Jan 2004 09:06:08 +0100 (CET)
From: "Jérôme Wanono" <>
Subject: Corticocotomies
Hello Everyone !! nice to hear you again !
Does anyone have an experience in "corticotomy assisted orthodontics and alveolar reshaping ?" (so-called "Wilckodontics") for ultra-fast treatments of adults ?
Have you ever used a single tooth corticotomy, lets'say around a second mandibular molar, to protract it into the space of the first molar ? or to move an ankylosed tooth ? (I don't understand the need for a distraction device in this last case ! ref : "Orthodontic fine adjustment after vertical callus distraction of an ankylosed incisor using the floating bone concept" Kinzinger et al. AJODO nov. 2003) or do you limit it to larger sites (sectors for example) ? what kind of bone grafting do your surgeon use, when he makes a reshaping ?
For those of you who never used it, what are your feelings about it ? 
Two references among others:
Chung KR, Oh MY, Ko SJ. Related Articles, Links
No abstract Corticotomy-assisted orthodontics.
J Clin Orthod. 2001 May;35(5):331-9.

Wilcko WM, Wilcko T, Bouquot JE, Ferguson DJ.                                                                                                                                                                                                 Related Articles, Links
Abstract Rapid orthodontics with alveolar reshaping: two case reports of decrowding.
Int J Periodontics Restorative Dent. 2001 Feb;21(1):9-19.

 In advance Thank You !!

Best regards

Jerome WANONO DDS, Msc Univ. Montréal


Date: Sun, 11 Jan 2004 12:43:13 -0500
From: "Leon Klempner" <>
Subject: I.T. Guy
To: "'The Electronic Study Club for Orthodontics'" <ESCO@LISTSERV.UIC.EDU>

I’m about to upgrade from Orthotrac Classic to Orthotrac Office (management and imaging).  We have two offices and are in need of some technical assistance.  I practice on Long Island, NY.   Any suggestions?

Leon S. Klempner, D.D.S., P.C.

Date: Tue, 13 Jan 2004 10:15:02 -0800 (PST)
Subject: Sassouni cephalometric analysis
To: "ESCO POST" <>

Subject: Sassouni ("no numbers") Analysis

Would anyone be interested in future postings about how to use this aid?  In its pure form, angles and distances aren’t measured.

Between March and May 2003, there were twelve matches for the archive search "SASSOUNI."  However, only eight of them specifically relate to the mechanics; Paul Johnson labeled these eight: Sassouni one to S 8.

S 9 to S 12 will follow if anyone will respond to: indicating that they are finding the material worthwhile.


Paul Johnson


Tustin, CA

Date: Tue, 13 Jan 2004 11:30:31 -0600 (CST)
From: "Elsevier eTOC Service" <>
Subject: American Journal of Orthodontics and Dentofacial Orthopedics January 2004, Vol. 125, No. 1

American Journal of Orthodontics and Dentofacial Orthopedics
Table of Contents for January 2004, Vol. 125, No. 1

Consensus builds for evidence-based methods
David L. Turpin, DDS, MSD

Special Article

What's ailing us? Prevalence and type of long-term disabilities among 
an insured cohort of orthodontists
Paul N. Brown, DDS, MS

Original Article

Efficiency of a pendulum appliance for molar distalization related to 
second and third molar eruption stage
Gero S. M. Kinzinger, Dr med dent, Ulrike B. Fritz, Priv Doz Dr med 
dent, Franz-Günter Sander, Prof Dr med dent, Peter R. Diedrich, Prof Dr 
med, Dr med dent

Characterization and cytotoxicity of ions released from stainless steel 
and nickel-titanium orthodontic alloys
Theodore Eliades, DDS, MS, DrMed, PhD, Harris Pratsinis, PhD, Dimitris 
Kletsas, PhD, George Eliades, DDS, DrDent, Margarita Makou, DDS, MS, 

Clinical trial comparing plasma arc and conventional halogen curing 
lights for orthodontic bonding
Bruno Manzo, DDS, MS, Giuseppe Liistro, MD, Hugo De Clerck, DDS, MS, 

In vivo effect of a resin-modified glass ionomer cement on enamel 
demineralization around orthodontic brackets
Renata Corrêa Pascotto, DDS, MS, PhD, Maria Fidela de Lima Navarro, 
DDS, PhD, Leopoldino Capelozza Filho, DDS, MS, PhD, Jaime Aparecido Cury, 

Effect of alloy type and surface conditioning on roughness and bond 
strength of metal brackets
Ibrahim Nergiz, DMD, Petra Schmage, DMD, Wolfram Herrmann, DMD, Mutlu 
Özcan, DMD

Effect of impression technique on bond strength
Jiaping Su, BDS, Ross S. Hobson, BDS, MDS, PhD, FDS, Morth RCPS, ILTM, 
John F. McCabe, BSc, PhD, DSc

In vitro evaluation of frictional forces between archwires and ceramic 
Clarice Nishio, DDS, Andréa Fonseca Jardim da Motta, DDS, MS, Carlos 
Nelson Elias, PhD, José Nelson Mucha, DDS, MS, PhD

Bond strength of various bracket base designs
Wei Nan Wang, DDS, Chung Hsing Li, DDS, Ta Hsiung Chou, DDS, Dennis 
Ding Hwa Wang, BA, Li Hsiang Lin, DDS, MS, Che Tong Lin, DDS, PhD

Optimum force magnitude for orthodontic tooth movement: A mathematic 
Yijin Ren, DDS, PhD, Jaap C. Maltha, PhD, Martin A. Van 't Hof, PhD, 
Anne Marie Kuijpers-Jagtman, DDS, PhD

Long-term stability of anterior open bite extraction treatment in the 
permanent dentition
Marcos Roberto de Freitas, DDS, MSc, PhD, Rejane Targino Soares 
Beltrão, DDS, MSc, Guilherme Janson, DDS, MSc, PhD, MRCDC, José Fernando 
Castanha Henriques, DDS, MSc, PhD, Rodrigo Hermont Cançado, DDS

Aspartate aminotransferase activity in pulp of orthodontically treated 
Giuseppe Perinetti, DDS, Giuseppe Varvara, DDS, Felice Festa, MD, DDS, 
Paola Esposito, DDS

Histologic analysis of pulpal revascularization of autotransplanted 
immature teeth after removal of the original pulp tissue
Inne Claus, DDS, Wim Laureys, DDS, Ria Cornelissen, DDS, PhD, Luc R. 
Dermaut, DDS, PhD

Clinician's Corner

Bone regeneration by bodily tooth movement: Dental computed tomography 
examination of a patient
Elif Gündüz, DDS, Carlos Rodríguez-Torres, DDS, André Gahleitner, MD, 
DDS, Gerda Heissenberger, MD, DDS, Hans-Peter Bantleon, MD, DDS, MS, PhD

Case Report

Nonextraction treatment of a Class II malocclusion and impacted 
maxillary central incisor
Kimberly D. Batterson, DDS, MS, Tod Curtis, DDS, MS, Clay Parks, DDS, 
MS, Erik Curtis, DDS, MS, Chris Carlson, DDS, Thomas E. Southard, DDS, 

AAO continuing education

Techno Bytes Q  A

What features should I look for in a scanner?
Demetrios J. Halazonetis, DDS, Dr Odont, MS

At what resolution should I scan cephalometric radiographs?
Demetrios J. Halazonetis, DDS, Dr Odont, MS

Litigation, Legislation, and Ethics

The scope of employment
Laurance Jerrold, DDS, JD

Review and Abstract

Constant versus dissipating forces in orthodontics: The effect on 
initial tooth movements and root resorption: F. Weiland European Journal of 
Orthodontics 2003;25:335-42
Alex Jacobson, MS, PhD

Use of complementary and alternative medicine for temporomandibular 
disorders: L. L. De Bar, N. Vuckovic, J. Schneider, and C. Ritenbaugh 
Journal of Orofacial Pain 2003;17:224-36
Alex Jacobson, MS, PhD

Does articulating study casts make a difference to treatment planning?: 
P. E. Ellis and P. E. Benson Journal of Orthodontics 2003;30:45-9
Alex Jacobson, MS, PhD

An inquiry into the use of computers in orthodontics offices: R. Peter, 
C. Lodter, and C. Arnaud Revue d’Orthopédie Dento Faciale 2003;37:193-9
Alex Jacobson, MS, PhD

Orthopedic and orthodontic components of Class II, Division 1 
malocclusion correction with Balters bionator: A cephalometric study with 
metallic implants: A. C. M. Melo, A. dos Santos-Pinto, J. C. da Rosa Martins, 
L. P. Martins, and M. T. Sakima World Journal of Orthodontics 
Alex Jacobson, MS, PhD

Ortho News

News, comments, and service announcements

Report on a symposium
G. Dave Singh, DDSc, PhD

Meeting announcements




Editor's choice
David L. Turpin, DDS, MSD

Readers' Forum

Ask us
G. Thomas Kluemper, DMD, MS

Letters to the editor: Searching PubMed for evidence-based dentistry
Patricia E. Pothier

Does "evidence-based research" provide needed evidence?
John R. C. Mew, BDS Lond, LDS RCS Eng, MFGDP (UK), M.Orth RCS Edin

Provocative thoughts about tomorrow's orthodontists today
James H. Currier, DDS, MS

Functional appliance treatment
Hans L. Eirew, BDS, DDS

Reader's Services


Information for authors

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