We get asked this a lot and the answer is two-fold.
First, an accurate impression is a must. Taking the time upfront
to take an accurate impression will save you time, money and frustration
later in the treatment plan. We guarantee that our products will
fit the model. But if the model is not accurate, it won’t fit
the mouth. We recommend the use of a custom tray in conjunction with
border moulding using either PVS or rubber based material for edentulous
cases or the Accu-Dent System II for partials.
Second, we must also have an accurate bite registration. An easy way to accomplish
this is with intra-oral tracers. They cost about $300 but are well worth the
investment. We are happy to order them for you upon request.
All of our models for partially edentulous cases
and nightguards are duplicated so that we are able to fabricate
the restoration on the duplicate cast and seat the final restoration
to the master cast before delivery. By doing this we are able to
save the doctor significant adjustment/chair time.
A processed base allows the doctor to verify the
accuracy of their impression and the fit of the denture base as well
as make any necessary adjustments during the bite registration and
wax try-in as this will be the final base of the denture. The benefit
is that all adjustments are made before final processing eliminating
the need to make any adjustments to the final denture thereby reducing
post-op appointments.
A rigid cast partial is always the best solution for long term treatment.
When a flexible partial is desired, the DurAcetal partial is constructed
in the same manner as a cast partial. It is a flexible, tooth colored
partial that is tooth supported via occlusal rests and the saddle
areas are processed with regular acrylic and can be relined, repaired
or added to in the same way as a regular cast partial. DuraFlex (Val
Plast), however, is tissue supported and must be rebased when a reline,
repair or addition is desired.
The answer is yes to both. DurAcetal clasps are retained through
mechanical retention which can be created on a new framework, existing
partial, acrylic partial and even a flexible partial.
For partial dentures we prefer the Accu-Dent System II. However,
because this is an alginate impression material it must be poured
up immediately and not be inverted after being poured. If alginate
is not desired, then we suggest a light bodied PVS material of your
choice. If PVS is chosen, we advise the use of a custom tray to keep
the thickness of the impression material more consistent in order
to avoid distortion of the impression.
For full dentures, we suggest the use of a custom tray in conjunction
with border molding with either PVS or rubber based material. Also,
we have found the Accu-Dent System I to be a good alternative to
traditional border molding. But again, because Accudent is an alginate
impression material it must be poured up immediately and not be inverted
after being poured. We have information on both upon request.
With CAD/CAM we are able to achieve a true passive fit which is unachievable
with traditional bars. They are one solid piece of titanium thus
eliminating the chance of the casting separating from the UCLA abutment.
Because they are milled from a solid block of titanium, we also eliminate
any porosity and weak spots in the bar. In addition, they are extremely
lightweight.
The steps for fabricating a CAD/CAM bar are the same, but they go
in a different order. We provide a step by step guide to our doctors
using this treatment option for the first time.
A thermoplastic nightguard has a hard occlusal surface but is flexible
on the buccal and lingual sides thus allowing it to flex comfortably
beyond the height of contour of the tooth for increased retention
yet is more comfortable than a traditional hard night guard.
The Acculiner is an alternative to using a face bow which uses average
values to align the maxillary cast properly on a semi-adjustable
articulator using a Hamular Incisive Papilla (HIP) plane. This helps
us in setting the teeth to the correct occlusal plane and reduces
the chance of a reset due to a canted occlusal plane.
All of our full denture and nightguard cases are transferred from
the Acculiner to a semi-adjustable articulator. We prefer the Stratus
200 because it can be calibrated avoiding the need for transporting
the articulator back and forth to the doctors office. However, we
have many other types available as well.
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