Abstract
A post and core is indicated to restore endodontically treated teeth when most tooth structure has been lost. Various techniques for the fabrication of single and multiple post and cores have been described. An acrylic resin pattern for the post is normally fabricated directly in the post space with an autopolymerizing acrylic resin and plastic pin and a brush-on technique. The difficulties of this technique include creating voids in the pattern, locking the pattern into
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