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Advantages and Disadvantages of of Three Quarter Crowns
Complete And Partial Veneer Crown
Fixed Partial Denture
Advantages of three quarter crowns:
- Conservative tooth reduction.
- Esthetics.
- Electric pulp testing can be done,
- Favorable periodontal response since less margins approximates the gingiva.
- Ensures complete seating as it is open faced and therefore permits easy escapement of cement.
- Complete veneer crown acts as a dosed hydraulic chamber preventing easy escape of cement.
Disadvantages of three quarter crowns:
- Poor retention and resistance when compared to CVC.
- Skillful preparation is critical to avoid metal display,
- May cause discoloration of anterior teeth particularly when the teeth are thin labio lingually.
- The PVC preparation is limited to fairly intact teeth with normally shaped, average length clinical crowns.
[Tylman 8th ed 173/Shillingburg 3rd ed 155]
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