Early Orthodontic treatment withTrainer system
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Transcript of Early Orthodontic treatment withTrainer system
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Justin J.C. Lee D.D.S., Ph.D
Seoul Children’s Dental Center
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So many dentists just drill
and fill cavities without
considering the causes of
caries.
So many orthodontists just
use mechanics to align
teeth without considering
the causes of malocclusion.
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JDent Res 74 (8) 1995 Guest Editorial 1437
Juha Varrela and Pentti Alanen
It is difficult to avoid the impression
that the better the mechanics of tooth
movement have been mastered, the
smaller has been the interest in etiological
or developmental aspects of the
malocclusions
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Edward F. Harris, PhD, and Michelle G. Johnson, DDS, MS
(AM J ORTHOD DENTOFAC ORTHOP 1991;99:258-68.)
In contrast to craniometric variables,
which have high heritabilities, almost all of the
occlusal variability is acquired rather than inherited
取得 遗传 咬合 Occlusion
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An epidemiologic transition in dental occlusion in world populations Robert S. Corruccini American Journal of Orthodontics November 1984 (Vol. 86, Issue 5, Pages 419-426)
The history of malocclusion gives an
interesting viewpoint on the development of contemporary
occlusal variation. Analyses of skull materials show that gross
malocclusions have been rare or nonexistent during most of
human history.
Minor malpositions or mild crowding was not infrequent, but
individuals who, by modern standards, would have needed
orthodontic treatment were uncommon.
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3 hypothesis of etiology for increasing malocclusion
The increase in allergies and other
factors that might obstruct
nasopharyngeal airways and interfere
with normal breathing
Dietary changes and
alterations in
masticatory activity
The effects of
abnormal sucking
habits
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To have good occlusion
Lips together,
Breathe though nose
Tongue place on the spot: “N”
Swallow with masticatory muscles
not with perioralmuscles
No parafunctions such as
thumb sucking, etc
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Tongue
tag
Breathing T4K
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2007.02.01
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2007.06.22 4m
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2008.05.24
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2009.01.29
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2004.03
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2004.05
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2004.11
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2005.4
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2006.7
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2006.12
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2007.4
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2008.05.10
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2009.10.09 2009.10.09
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TRAINER system
• Designed by a general dentist in Australia
• Acts like lip bumper: nose breathing
• Like Frankel appliance: relieves buccinator m.
• Tongue tag : remind tongue posture
• Silicon, ready made, a number of modifications
avaliable
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J.S.Kim 1996.5.15 / M
• Max. protrusion
C.C
• Deepbite caused by mentalis activity
Dx
• Establish normal swallowing pattern with T4K
Goal
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2005.01.16
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2005.10.19 9m
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2006.03.04.14m
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2006.10.08. 1y9m
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2007.01.04. 2y
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2007.08.26 2y 7m
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2008.02.27.3y2m
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2008.11.26 3y10m
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• Lower ant. crowding
C.C
• Deepbite, rhinitis, mentalis action
Dx
• Establish nose breathing and normal swallowing
pattern with T4K
Goal
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2006.06.07 2006.10.11 4m
2007.08.01 1y2m
2008.07.30.2y 2m, 2008.12.10.2y6m
2009.03.06 2y 9m
2009.07.08 3y 1m 2009.09.18 TPA
2009.10.22 3y 4m 2010.01.27. 4y 7m
2010.05.19 4y
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1999.04.05/F
• Diastema, flattened lower ant.
C.C
• Mentalis action, heavy labial frenum
Dx
• Establish normal lip tone
Goal
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2004.05.13 2006.02.08
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2006.12.27 10m
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2007.05.08 1y 3m
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2008.07.30 2y 5m
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2009. 02.18.3y
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2009.08.11 3y6m
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2010.06.15 4y4m
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2012 02 01 out of Tr 2yr
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1999.11.24 /F
• Ant. crossbite, crowding
C.C
• Incorrect tongue posture and mentalis action
Dx
• Establish normal tongue posture and swallowing
pattern
Goal
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2006.09.07
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2006.10.27 Start T4K
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2007.02.02 4m
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2008.01.13 1y 3m
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2008.10.04 2y
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2009.08.04 2y 10m
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1999.05.26 /M
• Crooked teeth
C.C
• Lack of space caused by perioral muscle action
Dx
• Establish normal tongue posture and lip tone
with T4K
Goal
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2005.08.27 .
2006.06.03
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2006.11.18
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2007.10.21 T4K start
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2008.01.13 3m
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2008.08.30 10m
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2008.12.06 1y 2m
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2009.05.05 1y 7m
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2009.09.19 1y 11m
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2010.02.26 2y 4m
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1998.09.25/M
• Max. protrusion
C.C
• Mentalis action, incorrect tongue posture
Dx
• Establish perioral muscle tone and tongue
posture
Goal
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2005.12.29
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2008.07.01 Start T4K
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2008.07.01
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2009.06.23 1y
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2009.06.23 1y
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2010.06.27 2yr
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2011 07 28
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2012 03 20 out of Tr 2yr
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1998 02 .24/ F
• Crooked upper ant.
C.C
• Lack of space
Dx
• Establish normal tongue posture
Goal
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2005.01.07
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2005.04..28 Tr start
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2005.12.28 8m
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2007.01.04 1y 8m
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2007.07.27 2y3m
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2008.05.10 3y
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S.H. Jang 1999.10.14/M
• Max. protrusion
• Lower crowding
C.C
• Mouth breathing, retro-positioned tongue
Dx
• Lip seal(Adenoidectomy and Tonsilectomy)
• Establish tongue posture with T4K
Goal
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2006.07.21
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A &T 2008.01 Tr start
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2007.11.21
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2008.05.08 4m
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2008.08.21 7m
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2008.08.21 7m
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2009.03.21 !y 2m stop T4K
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2010.03.31 1yr later relapse
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Limitations
Compliance Gingival
irritation Relapse
Difficult to
correct CIII
Difficult to
charge fees
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• Excellent for deepbite, mentalis action,
• Good for collapsed arch
• Good for mild upper/lower crowding
• Useful as a retainer during growth
• Can be used for crossbite(local factor)
• Questionable for open bite
Conclusion
Must be accompanied
by muscle exercises
(swallowing, tongue posture, lip
competence)