Bridges II - Conventional bridges (Fixed partial dentures) Flashcards
What to consider when planning for missing teeth?
Need a predictable and durable soln Consider need for transitional restorations Build in contingency planing High pt expectations Realistic tx plan
Restorative options for missing teeth?
Removable partial dentures
Fixed partial dentures (bridges)
Implants
What is restorative dentistry?
Eliminating disease and restoring func and aesthetics using the most appropriate materials and techniques
What is an RPD?
Tooth supported partial denture Removed and replaced by dentist Replace whole dento-alveolar complex Non destructive Fully reversible Effective permanent or transitional option
What is a fixed partial denture (bridge)?
Conventional bridge - permanently retained by other teeth
Cannot be removed by pt
Replace teeth only
Destructive
Unpredictable long term prognosis
Design of choice - single unit adhesive cantilevered
Features of implants?
Replace teeth
Can replace bone/soft tissue with grafts
Surgical option with higher morbidity
Predictable success rate >90%
What to note during your clinical exam for a conventional bridge?
Occlusal relationship - guidance Inter-occlusal space Centre line Lip smile line Position of teeth present Shape and position of potential abutments Restorative and vitality status of teeth
What to look for on a radiograph?
Position of normal anatomical features Pathological conditions Periapical status of abutment teeth Alveolar support of abutment teeth Root remnants and foreign bodies Alveolar support of abutment teeth Root remnants and foreign bodies Alveolar height and width
Why not use an OPT?
Panoramic rad:
- Distortion in the horizontal plane
- Shadowing of incisor region
What is the design criteria for conventional bridges?
Periodontal Support Occlusal Loading Conservation of Tooth Tissue Cleansability Appearance
Why use a periapical radiograph?
Intra-oral periapical
- Using paralleling technique
- Check individ teeth
- Assess alveolar bone width
How to retain a conventional bridge?
Full Coverage Crowns – The preparation of the abutment tooth is a full
coverage crown: FGC, PFM, All-Ceramic
Adhesive Retainers – The preparation of the abutment tooth is minimal and involves the palatal and proximal surfaces
only
What type of abutments to use for conventional bridges?
Fixed-Fixed – The bridge spans from
one abutment to another, with the pontic
in between.
I.e.: Abutment – Pontic – Abutment
Cantilevered – The bridge is retained
by one abutment only.
I.e.: Abutment -Pontic
What is vital regarding bridges and periodontal support?
PD history important - current and future periodontal health are critical
Maintenance of periodontal health
What to consider with occlusion?
Functional excursions
Parafunctional loads - bruxists
Lateral excursive movements - canine guidance, group func, interferences
