acific Coast Society of Orthodontists Bulletin Summer 2018 - 28
Special Section
Retention: Survey Responses
RETENTION
University of California,
San Francisco
Arizona School of
Dentistry & Oral Health
University of the Pacific
University of Nevada,
Las Vegas
Do residents fabricate their
own retainers?
Yes (1st year only)
No
Yes
Yes
If so, approximately how
many of each type of retainer
does each resident fabricate?
Hawley: 3, vacuum-formed: 3, fixed: 3
Residents fabricate 10 Hawley-type
retainers for their requirement
All Essix and bonded
Hawley: 10, vacuum-formed: 40, fixed:
30
What percentage of patients
receive the following retainer
types?
Hawley: 80%, Essix: 5%, fixed: 15%
Hawley: 20%, vacuum-formed: 60%,
fixed: 20%
Hawley: 50%, Essix: 50%, fixed: 70%
Hawley: 20%, Essix: 80%, fixed: 30%
In patients receiving fixed
retainers, are overlay removable retainers also provided?
Yes, about 5% of them-Biostar 2 mm
blanks
Yes
Yes, usually Essix
Yes-vacuum-formed
How are final models for
retention taken?
Alginate impressions and intraoral
scanner
Alginate impressions
Intraoral scanner
95% alginate, 5% PVS, 50% intraoral
scanner
For each of the following
conditions, please note the
influence, if any, on retainer
choice:
Extractions: Hawley to hold ext site
together, Anterior open bite: posterior
occlusal cover on Hawley or Essix,
Deep bite: Hawley with bite plane,
Crowding: fiberotomy and bonded,
Spacing: Essix, Midline diastema:
Hawley with bonded, Posterior crossbite: Hawley, Anterior crossbite: Essix,
Phase I: Hawley with acrylic trimmed
away from transition teeth
Anterior open bite: usually Trutain,
Crowding: lower fixed, Spacing: fixed,
Midline diastema: fixed, Posterior
crossbite: Hawley, Phase I: always
Hawley type
Extractions: wraparound Hawley or
vacuum, Anterior open bite: Hawley,
Deep bite: Hawley with anterior bite
plate, Crowding: either, Spacing:
Hawley or vacuum, Midline diastema:
fixed, Posterior crossbite: Hawley,
Anterior crossbite: N/A, Phase I:
Hawley or fixed
Anterior open bite: Hawley, Crowding:
fixed. All other conditions have no
influence on retainer type.
Is there a general posttreatment retention protocol
taught at the school?
Varies with faculty
Yes
Varies with faculty
Yes
If yes, what is the protocol?
N/A
Full-time wear for 6 months; after
that, nighttime wear only
Usually full-time 3-6 months, then
nighttime wear
Full-time 6 months; nights for 6
months as necessary
At what time points are
patients seen for retainer
checks?
2 months, 6 months, 20 months, then
dismiss
1 month, 6 months, 1 year, as needed
after 1 year
6 weeks, 3 months, every 6 months
thereafter
1 month, then 3 months; two 6 month
checks as necessary
Does the university take postretention records? If so, at
what time point?
Yes-20 months
Yes-1 year
Yes-2 years post-treatment
Yes-at finish
How long after treatment
is the patient followed in
retention? Is the patient ever
dismissed?
Dismissed at 24 months unless issues
Follow up as needed after 1 year
2 years
18 months
Do you believe that the type
of retainer influences patient
compliance?
Maybe - perhaps Essix is easier?
Yes, more compliance with vacuumI don't know. Certainly bonded is more formed retainers.
compliant.
Yes, compliance is sometimes better
with Essix.
Yes, vaccum-formed is more esthetic
and easier to wear.
Estimate the percentage of
breakage with the following
retainer types:
Hawley: 5%, Essix: 1%, fixed: 10%
No records
Hawley: 20%, Essix: 30%, fixed: 30%
Hawley: 20%, Essix: 30%, fixed: 10%
How do you fix minor relapse
in the retention phase?
Removable-usually spring retainer
or clear aligners
Removable
Both fixed and removable-depends
on amount of relapse
Both fixed and removable depending
on what needs to be done
Do you charge the patient for
minor relapse if it is within
your retention period?
If they are at fault
No
Depends on the severity of relapse
and method of re-treatment
No
When do you charge a separate fee for retention visits?
After 24 months
Never
After 2 years
After 3 years
28
PCSO Bulletin Summer 2018
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