Post on 27-Apr-2017
NON-EXTRACTION TREATMENT MODALITY
INDIAN DENTAL ACADEMY
Leader in continuing dental education www.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
Extraction?
OR
Non-extraction?
www.indiandentalacademy.comwww.indiandentalacademy.com
Non- Extraction:
1900-1930
Dr.Edward Angle
Extraction:
1930-1970
Dr.Tweed,Dr.Beggs
1980’s to Till now.
Cetlin, Jasper, James Hilgers, Panchetz, Alexander, …….
www.indiandentalacademy.comwww.indiandentalacademy.com
Traditionally Begg practitioners were
branded as extractionists. Advances in
mechanotherapy, and changes in treatment
concepts have changed this opinion about
the Begg technique and curtailed the need
for extraction in contemporary treatment.
www.indiandentalacademy.comwww.indiandentalacademy.com
The prevalence of indiscriminate extractions in earlier decades can partly be blamed on over use of certain cephalometric norms routinely followed.
Secondly, Camouflaged treatment plan for the underlying jaw discrepancies, with little emphasis on growth modulation and still little on orthognathic surgery.
www.indiandentalacademy.comwww.indiandentalacademy.com
TWEED : Advocated placing mandibular incisors upright over basal bone IMPA-900 + Small Variation to maintain FMIA of 650 -680
STEINERS : Positions for max and mand teeth, determined by lines of NA and NB and varied according to angle ANB.
www.indiandentalacademy.comwww.indiandentalacademy.com
RICKETTS : Supported Tweeds, Related mandibular incisors to APO line. 1 mm ahead of APO plane (-1 to +3mm and at an Angle of 220 ). The Maxillary incisors were positioned with a 2-2.5mm over bite and over jet and inter incisal angle 1300
www.indiandentalacademy.comwww.indiandentalacademy.com
The Casko study in 1967 which measured 79 cases with ideal occlusion and acceptable esthetics, found wide range of incisor` positions and jaw relationships.
Mandibular plane angle - 150 to 410
Facial angle - 790 to 950
Max incisor to SN - 930 to 1200
Lower incisor to APO - -4mm to +6mm
www.indiandentalacademy.comwww.indiandentalacademy.com
“These values are all normal in the pleasant faces
in which they were found”.
Creekmore states these values at current time
would classify many of these patients as
abnormal and classify them as Class I, Class II,
Class III sk pattern’s.
www.indiandentalacademy.comwww.indiandentalacademy.com
In yet another study by Casko and Walter Shepherd on same Tweeds sample of 95 cases, found wide range of incisor positions and Jaw relationships. Low Mean High FMA 15 24.6 36 IMPA 76 86.9 99 FMIA 56 68.2 80
www.indiandentalacademy.comwww.indiandentalacademy.com
The basis for selecting the sample was entirely
from the standpoint of satisfactory facial
esthetics and good facial out line.
Inspite of wide variation in his own sample
of angle IMPA, Tweed Advocated placing the
mandibular incisors upright over basal bone for
optimum esthetics and stability.
www.indiandentalacademy.comwww.indiandentalacademy.com
C.J. Burstone, park AJO 1986 Fallacies of Hard tissue standard in treatment planning.
Studied 30 adolescents who were successfully treated with end result as mandibular incisors 1.5mm to A-PO line. Authors have shown even in this uniformly treated group, there was large variation in lip protrusion
Rickets Analysis was also built upon mandibular incisor position
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
Thus, when antero-posterior Jaw relationships differ greatly from average, Measurements of maxillary and mandibular incisors to the APO plane misrepresents their positions within jaws
In Steiners analysis the position of mandibular incisors remains fairly constant, but the position of maxillary incisors varies a great deal to fit with mandibular arch, the concept of which has proved wrong.
www.indiandentalacademy.comwww.indiandentalacademy.com
In order to achieve these contemporary goals of placing upright lower incisors, clinicians invariably considered extraction of teeth.
This indiscriminate extractions in earlier decades can also be attributed to the camouflage treatment for basal jaw discrepancies, with little emphasis on growth modulation or orthognathic surgery procedures.
www.indiandentalacademy.comwww.indiandentalacademy.com
- Now, the concept of diagnosing and treating a
malocclusion depending on the position of lower
incisors, has changed. The upper incisor position
is being given more importance, along with the
soft tissue profile, lip competency, position of
chin, and the type of growth pattern.
- Clinicians today, agree to err on non-extraction
side rather than considering extraction option.www.indiandentalacademy.comwww.indiandentalacademy.com
- This swing of the pendulum towards non-
extraction was essentially due to the marked
advances in diagnosis and mechanotherapy
between early 1970’s and the late 1990’s, which
has given the clinician lots of options for
rethinking the treatment plan.
www.indiandentalacademy.comwww.indiandentalacademy.com
“Beauty lies in beholder eyes”
The concept of beautiful smile is now changing. Toothy broad smile is now more appreciated.
Orthodontics has kept in pace to this evolving newer concept of non-extraction with upgrading of more mechanics
www.indiandentalacademy.comwww.indiandentalacademy.com
Many of this mechanics have evolved
embracing the preadjusted edgewise appliance.
No doubt present day refined Begg has also
evolved in similar path and boost with
advantage of retaining its simple approach and
yet incorporating all the modern day mechanics
in its non-extraction practice.
www.indiandentalacademy.comwww.indiandentalacademy.com
• Slenderization technique as proposed by
Sheridon and popularized by Alexander is now
being done based on sound diagnosis.
• The whole array of modalities for distal
driving of the molars.
• The use of expansion devices.
www.indiandentalacademy.comwww.indiandentalacademy.com
• The early reorganization and correction of
malocclusion during the mixed dentition phase.
• The multitude of evolving orthopaedic
appliances.
• Conservation of E-space, Leeway space and
correction of molar rotations.
• Long-term stability.www.indiandentalacademy.comwww.indiandentalacademy.com
- One of the paradoxical but pleasant surprises of Begg non-extraction technique is the Anchorage potential, which is often enhanced if the anchor molars have mesial axial Inclination at the commencement of treatment. The differential force system of controlled tipping of Incisors as against the bodily movement of molars has added to the beauty of anchorage preservation in non-extraction Begg technique.
www.indiandentalacademy.comwww.indiandentalacademy.com
Pre treatment profile, Age:15yrs
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
Prakash, 14yrs; skeletal Cl III, concave profile, crowding in the upper arch, super Cl I molar relation.
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
Name: Padmini / 10yrs
Severe Class II Div.1
Convex profile
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
Anil / 12yrs; Skeletal Class II, Horizontal growth, severe proclination of upper incisors, Molar relation - Left Class I, Right Class II, Mild retroclination of lower incisors, Overjet 13mm, Overbite 5mm
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
Midline distema, skeletal class I
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
Nagprasad/21yrs, Sk. Class II, Convex profile, retroclined upper incisors, proclined lower incisors, reduced lower facial height.
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com
Refined Begg has an distinctive advantage of anchorage preservation.
The Begg technique, with its modern day concepts and under the guidance of innovative
teachers has definitely evolved to its best.
www.indiandentalacademy.comwww.indiandentalacademy.com
Thank youThank you
For more details please visit For more details please visit www.indiandentalacademy.comwww.indiandentalacademy.com
www.indiandentalacademy.comwww.indiandentalacademy.com