3. 3.5% US
14%
Chinese
and
Japanese
INCIDENCE
3.4%
Indian
Ast DB, Carlos JP, Cons NC. The prevalence and characteristics of malocclusion among senior highschool students in
upstate New York. Am J Orthod 1965.
Irie M, Nakamura S. Orthopedic approach to severe skeletal Class III malocclusion. Am J Orthod 1975.
Kharbanda OP, Siddhu SS, Sundarum KR, Shukla DK. Prevalence of malocclusion and its trait in Delhi children. J Indian
Orthod. Soc 1995.
INCIDENCE
5. Current Tx
protocol for
orthopedic
Maxillary
Protraction is by
means of elastic
Facemask
Chin Cup
Expansion
Turley, P.K.: Orthopedic correction of Class III malocclusion with palatal expansion and custom protraction
headgear, J. Clin. Orthod. 1988.
Hideo, M.: Early application of chincup therapy to skeletal Class III malocclusion, Am. J. Orthod. 2002.
Sakamoto M, Sugawara J, Umemori M, et al. Craniofacial growth of mandibular prognathism during pubertal
growth period in Japanese boys – Longitudinal study rom 10 to 15 years of age. J Jpn Orthod Soc 1996
6. Physical
appearance
of the extra-
oral
appliance
Skin irritation
from the
anchorage
pad
POOR
COMPLIANCE
of child to wear
it, major problem
associated with
facemask therapy
Sung, S.J. and Baik, H.S.: Assessment of skeletal and dental changes by maxillary protraction, Am. J. Orthod. 1998.
PROBLEMS IN CONVENTIONAL THERAPY
7. NEED OF NEW APPLIANCE
Hence there was a need of another appliance to enhance
the patient compliance with much better biomechanics
Present paper discussed the construction and clinical
procedure of an intraoral fixed appliance for the
treatment of Class III malocclusion in young patients
without relying on patient co-operation
8. Fixed Maxillary Appliance with soldered buccal arm on
first molar band for Class Traction
Fixed Mandibular Appliance with welded buccal tube
on first molar band to headgear facebow
A 0.045 inch headgear face bow with the outer bows
bent out for Class III elastic attachment with a soldered
stop at terminal end on inner bow
Components of
Modified Fixed Nanobite Tandem Appliance (MFNTA)
9. FIXED MAXILLARY APPLIANCE
Sean Shih-Yao Liu, Hee-Moon Kyung and Peter H. Buschang.
Continuous forces are more effective than intermittent forces in
expanding sutures. Eur J Orthod 2010.
10. FIXED MANDIBULAR APPLIANCE
Veerendra Prasad, Vijay P. Sharma, Pradeep
Tandon, Gyan P. Singh. A new fixed biteplane. J
of Clinical Orthod 2008.
12. Mechanism of action of MFNTA
Schematic representation of a line of
force through the center of resistance
(CR) of maxilla, which will result in a
translatory movement of maxilla. In
the long vertical dimension of Class III
patients, it is advisable to adjust the
line of force ≤20° to the occlusal
plane (OP) to prevent downward
rotation of mandible.
13. Mechanism of action of MFNTA
Schematic representation of a line of
force for Class III with flat mandibular
plane; it is advisable to adjust the line
of force ≥25° to the occlusal plane
(OP) which will result in downward
and forward movement (clockwise) of
midface and dentition resulting in
downward and backward rotation of
mandible.
14. A CLINICAL REPORT OF PEDIATRIC PATIENT WITH CLASS III MALOCCLUSION TREATED
BY MFNTA
Pretreatment patient photographs
She and her
parents were
psychologically
depressed with
her facial
appearance and
reverse bite
16. Post treatment Patient photographs
Posttreatment
facial photographs
of the patient
showed marked
improvement in
facial esthetics and
correction of reverse
bite
20. Address for
correspondence
Dr. Prabhat K C,
Assistant Professor,
Department of Orthodontics,
Dr. Z A Dental College,
Aligarh Muslim University,
Aligarh, India -202001.
Email ID-
dr.prabhatkc@gmail.com
Modified Fixed
Nanobite Tandem
Appliance (MFNTA)
