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Fig. 1. SEM micrographs of the waxy zone. (A) The upper wax layer (intact surface). (B) Wax crystals of the upper wax layer (intact surface). (C) The lower wax layer (surface after treatment with cold chloroform; the upper wax layer is removed). (D) The lower wax layer (surface after application of the dental wax; the upper wax layer is removed). (E) Waxy zone after complete wax removal (surface after treatment with hot chloroform).