3. Extraction versus Non-Extraction -
Interesting question
• The debate has been going on for over 100 years.
• While many orthodontists are quick to extract, many
orthodontists avoid extraction at all costs.
• The effects of orthodontic treatment on the facial profile
• Influence of treatment with and without extractions on the
growth pattern
• Orthodontic treatment-duration, patient motivation
• Benefits of Early treatment, growth potential, no extraction.
4. Extraction versus Non-Extraction
Part 2: Non-extraction Philosophy, Space regaining.
Part 3: Choice of teeth for extraction.
Part 1: Extraction in Orthodontics and its Indications.
5. Extractions in Orthodontics
Indications
1-Indications: Severe dental crowding > 7mm-Tooth-arch discrepancy
2-Indications: Anteroposterior relationships discrepancy.
3-Indications: unfavorable position of Tooth impaction, Dental ankylosis .
4- Indications: unaesthetic facial profile, Protrusion.
5- Indications: Adult crowding with gingival recession.
6- Indications: Dental Caries.
7-Indications: Supernumerary teeth
8- Indications: Patients not motivated and we need to shorten duration of
treatment.
9-Indications: Hyperdivergent facial type – vertical growth pattern.
6. 1-Arch length- Severe Dental Crowding > 7mm
Tooth-arch discrepancy: Size of the jaw is smaller than the size of the
teeth
Dental crowding can be simply defined as the overlap of teeth caused
by insufficient space within the dental arch.
If the dentition is too large (Macrodontia) to fit in the dental arch
without irregularity, it may be necessary to reduce the dentition size by
the extraction of teeth.
7. 2-Indications: Severe Skeletal Class II
Correction of Occlusion Reduce overjet
Anteroposterior relationships ( Problem in patient cooperation, elastics, functional
appliances, headgear… )
Overjet is also known as “protrusion” of teeth, the lower teeth are too far behind
the upper front teeth.
In most Class II cases with abnormal upper proclination, it is advisable to extract
teeth (14-24) only in the upper arch and to retract the maxillary incisors and
canines. In case of the lower arch crowding it is advisable to extract in both the
arches (34-44).
8. 2-Indications: Severe skeletal Class III
malocclusion Reduce Reverse Overjet
www.orthofree.com
REVERSE OVERJET IMPORTANT Class III cases are
usually treated by extracting teeth only in the lower arch to
discourage the forward growth of mandibe (34-44)
Or surgery (15-25-34-44)
