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Prostho 4th

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  • 1. A restoration that covers all coronal tooth surfaces (mesial, facial, distal, lingual and occlusal)
    Used as a single-unit restoration or as a retainer for a fixed partial denture.
    It can be all metal, all ceramic or a combination.
    Full Veneer Crown
  • 2.
  • 3. It completely encircles the coronal portion of the tooth, the full veneer crown affords the most effective retention and resistance form of all of the extracoronal restorations. Used in situations in which tooth form and alignment are not ideal and when a less than perfect preparation is a likely result.
    Advantages
  • 4. Lack of esthetic qualities
    Extensive in nature
    Disadvantages
  • 5. 1.presence of extensive caries
    2.existing large defective restorations
    3.fracture of the tooth
    4.need to change contour,as for removable partial denture retention
    Indications
  • 6. Cont.
    If the tooth used as an abutmentadditional circumstances:
    1.Abutment tooth short occlusocervically
    2.Long edentulous span
    3.Greater than average occlusal forces
    4.Abutment tooth alignment that recquires full-coverage preparation to achieve adequate retention.
  • 7. An extracoronal cast restoration that usually covers the occlusal and all but one of the axial surfaces of a tooth.
    Facial is usually the area not involved
    Used as a single unit restoration or as a retainer for a fixed prosthesis.
    Posterior Partial veneer crown
  • 8. Advantages:
    Conservation
    Favorable periodontal response
    Esthetic qualities
    The anterior Partial veneer crown
  • 9. Anterior tooth quite thin that may cause the tooth to become darker when the restoration is cemented.
    The thinness of anterior of anterior teeth makes retention for the partial veneer restoration difficult because of limited bulk for placing proximal retention boxes or grooves.
    Disadvantages
  • 10. Pinledge Retainer