Fixed partial denture
From WikiMD's Food, Medicine & Wellness Encyclopedia
Definition[edit | edit source]
A partial denture that is cemented to natural teeth or roots which furnish the primary support to the prosthesis- GPT. A restoration or replacement which is attached by a cementing medium to natural teeth, roots, implants- GPT.
Indications[edit | edit source]
- Short span edentulous arches
- Presence of sound teeth that can offer sufficient support adjacent to the edentulous space.
- Cases with ridge resorption where a removable partial denture cannot be stable or retentive.
- Patient’s preference
- Mentally compromised and physically handicapped patients who cannot maintain the removable prosthesis.
Contraindications[edit | edit source]
- Large amount of bone loss as in trauma.
- Very young patients where teeth have large pulp chambers.
- Presence of periodontally compromised abutments.
- Long span edentulous spaces.
- Bilateral edentulous spaces, which require cross arch stabilization.
- Congenitally malformed teeth, which do not have adequate tooth structure to offer support.
- Mentally sensitive patients who cannot cooperate with invasive treatment procedures.
- Medically compromised patients (e.g. leukemia, hypertension).
- Very old patients.
- Distal extension denture bases as in class I and II cases.
Components of FPD[edit | edit source]
Crown[edit | edit source]
- It is a cemented extracoronal restoration that covers or veneers the outer surface of the clinical crown. The primary function of a crown is to protect the underlying tooth structure and restore the function, form and aesthetics.
- If the prosthetic crown covers all five surfaces of the clinical crown it is referred to as a Full veneer crown (FVC).
- If the prosthetic crown does not cover the entire clinical crown, it is referred to as a Partial Veneer Crown (PVC).
Retainer[edit | edit source]
- A crown that is used as a part of the fixed partial denture for retention and support from the abutment tooth is called as a Retainer.
Abutment[edit | edit source]
- It is any tooth, root or implant which, gives attachment and support to the fixed partial denture.
Pontic[edit | edit source]
- The artificial tooth that replaces a missing tooth in a fixed partial denture is called a pontic. Pontics are attached to the retainers. All forces
acting on the pontic are transferred to the abutment through the retainers.
Connectors[edit | edit source]
- It is the connection that exists between the pontic and retainer. They may be rigid or non-rigid.
- Rigid connectors are immovable attachments between the pontic and retainer. Example: Solder joints.
- Non-rigid connectors are movable attachments with a key-keyway mechanism. Example: Precision attachments (stress breakers).
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Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.Contributors: Prab R. Tumpati, MD