Pacific Coast Society of Orthodontists Bulletin Summer 2020 - 35

PCSO Program Talk

University of Alberta

University of British Columbia

University of Pacific

A.T. Still University

~50%
~80%

65%
35%-40%

About 50% of our patients
are 16 years or younger
30%-50%

About 60% are growing
patients
40%-50% are Class II

50%
~30%

25%-30%
35%-40%

50%
30%

40%
25%-30%

50%
50%

The majority receive onephase treatment. Some extreme cases are treated with
two-phase treatment

6:1

Early mixed dentition patients, they undergo twophase treatment

No

Best evidence from randomized controlled trials (RCTs)
show one-phase treatment
is more efficient and has the
same extraction and surgery
rates as two-phase treatment with a shorter overall
treatment time and cost.
That said, the severe patients
with trauma risk and teasing
get two-phase treatment.
Severity, trauma risk, lip
incompetence, and psychosocial issues are considered
when making the treatment
decision

One-phase treatment: In the
permanent dentition, various
treatment modalities including headgear, Forsus, Herbst,
extraction
Two-phase treatment: In the
mixed dentition, headgear,
fixed 2 × 4 appliances, and
lower lingual holding arch

There is no set treatment
philosophy in our program.
Each faculty choses their
own protocol depending on
the timing and severity of the
case.

Summer 2020    PCSO Bulletin	

35



Pacific Coast Society of Orthodontists Bulletin Summer 2020

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