Exam 3-Dr. E's lecture-denture types n stuff Flashcards
Out of 33 million edentulous patients only ___–___% have received implant treatment.
2-4%
_________ produces a customized milled abutment and framework with ideal emergence profile and shape to simplify the fabrication of a prosthesis.
CAD/CAM technology
CAD/CAM technology can produce customized _______ OR _______ abutment.
Ceramic or titanium
When trying to improve the facial profile and lip support, which prosthetic is the best option?? Which two prosthesis types would not do the job?
an Overdenture…a fixed complete denture or PFM bridge would not provide the support
What is the average lifespan for a denture?
5-7 years
In your clinical exam, ideally you would like a minimum of __-__mm of keratinized mucosa around implants
3-4mm
What are the 4 options for completely edentulous patients?
1.Removeable-locator over-denture 2.Removeable-bar&clip over denture (hader bar) 3.Fixed-Fixed detachable prosthesis (hybrid) 4.Fixed-PFM or all ceramic
What is the minimum number of implants needed for an o-ring over-denture?
2 implants
How many mm of bone are needed for a locator over-denture?
10 mm
Duplicating a denture can make a useful _______
surgical guide!
How frequently does the o-ring wear out?
every 4 months
The more angulation in the implants of a ball/o-ring over-denture, the more ______
wear on the denture
What are the two types of over-denture attachments?
ball/o-ring and locator
What is the advantage of a locator over-denture implant compared to a ball/o-ring?
it has a much lower profile!
Which over-denture attachment type would you use for a patient with limited interocclusal space?
a locator over-denture attachment
What feature of the locator over-denture helps reduce wear of the denture?
the metal housing
What are the three levels of retention for the male plastic caps in a locator over-denture? How much angle correction does each abutment yield?
1) 1.5lbs=blue..low 2) 3lbs=pink…medium 3) 5lbs=white/transparent…high——10 degrees correction per abutment
What is the usual amount of torque used when tightening a locator over-denture abutment?
15 N/cm
How far should the locator abutment extend over the tissue?
1 mm
In a study printed in the Journal of Periodontology, researchers found that the cumulative survival rate of implant-placed overdentures was _____ percent for 10 years. The success rate for the maxilla (upper jaw) implant supporting overdentures was 87.3 percent and the mandible (lower jaw) was 99.5 percent.
95.4 %
BOOM! The CHEWING EFFICIENCY with an implant
overdenture is improved by ___% compared
with a traditional complete denture
20%
When given the option of 5 locations to place your implants (ABCDE) in between the mental foramina, which two are ideal? Why?
B and D…less of a fulcrum compared to A and E, less anterior/posterior rocking of the denture
A bar & clip over-denture requires ____ or _____ implants
2 or 4
Ideal bar and clip overdenutre design is two direct retainers and a ______ clip
MIDLINE (makes a triangle shape)
What is a really good advantage for combining the locator system with a bar?
attachment only needed once every 3 years
A Fixed Detachable Prosthesis (aka Hybrid Prosthesis) requires ____ or ____ implants
4 or 5
What is the minimum amount of space needed from the head of the implant to the plane of occlusion in a fixed-hybrid prosthesis?
15-20mm
The metal framework for your prosthesis MUSH be a _______ fit!!!
PASSIVE
What are the three indicators for using a hybrid prosthesis?
- space 2.number of implants 3.Anterior/Posterior Spread
What is the English AP Spread Rule?
You can cantilever a hybrid denture 1.5x the A-P spread of the most anterior implant to the most posterior implant
According the to the English AP spread, if I have 8mm of AP in the anterior how much can I cantilever past the most posterior implant?
12mm past the most posterior implant….(8mm x 1.5 = 12mm)
Does a square arch form have an AP spread?
NO
So the English AP spread is for the minimum amount of cantilever, what is the maximum amount?
AP spread x 2 (vs English = AP spread x 1.5)
In this patient a combination of excessive cantilever length and insufficient A-P spread lead to implant _______ and a _______ remodeling response of the adjacent bone.
overload….resorptive
Implant Supported Prosthesis- Mandible…MINIMUM Requirements: Length of implants….Minimum length = ____mm
10mm
Implant Supported Prosthesis- Mandible…MINIMUM Requirements: Number of implants – Minimum number is _____ implants
4
Implant Supported Prosthesis- Mandible…MINIMUM Requirements: Anterior-Posterior Spread Minimum amount is WHAT?
100mm!! (1cm :)
How many implants are needed for a PFM implant supported prosthesis?
6 to 8 implants
REVIEW: For the edentulous MAXILLA, you need ___ implants for a fixed-detachable (hybrid) prosthesis.
6 implants (4 implants ok, but know 6 for boards)
REVIEW: For the edentulous MAXILLA you need ___ implants for a fixed PFM prosthesis.
8 implants
REVIEW: For the edentulous MAXILLA you need ___ implants for a bar and clip over-denture prosthesis
4
REVIEW: For the edentulous MAXILLA you need ___ implants for a locator over-denture prostheiss
4
FOR THE MAXILLA what is the minimum amount of AP spread?
2 cm (remember only 1 cm needed for the mandible)
FOR THE MAXILLA, the most DISTAL implant must be ___ in length
10mm
Which is the most important factor as to why we place maxillary implants for a denture in the posterior?
PHONETICS!!
What are the only disadvantages for implant supported dentures?
cost and time
WHAT ARE THE THREE ABSOLUTE CONTRAINDICATIONS OF AN IMPLANT SUPPORTED PROSTHESIS???
1.Acute Illness 2.Pregnancy 3.Uncontrolled Metabolic Disease
