الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
The marginal and internal adaptation of both hi ceram and duceram lfc as well as their fracture load were evaluated and compared A total of eight standardizwd epoxy resin dies representing maxillary first molars were duplicated from a prepared ivory die then they received all procelain crowns.each crown was cemented to its respective die using zinc phosphate cement