title: The use of an attachment system for overlay prostheses.
abstract: The attachment system presented offers a prefabricated pin and post technique or use of a plastic pattern in a metal casting. Both provide the advantages of positive retention, stress-breaking effect, ease of maintenance, clinical or laboratory activation, and simplicity of technique. Both have the disadvantages of nonadjustable retention, nonparallelism of post portion to root axis, and unknown long-term effect. The casting system is the preferred method because of its accurate fit and smaller occlusal height.
mesh_terms: D003442:Crowns; D003735:Dental Casting Technique; D003779:Denture Design; D003834:Denture Precision Attachment; D003781:Denture Retention; D003828:Denture, Overlay; D006801:Humans; D011176:Post and Core Technique