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Page 1: cdigital.dgb.uanl.mxcdigital.dgb.uanl.mx/la/1030013948_C/1030013948_T1/1030013948… · gutta-percha tissue. This tissue cannot be boiled as it is destroyed by heat, and dependence
Page 2: cdigital.dgb.uanl.mxcdigital.dgb.uanl.mx/la/1030013948_C/1030013948_T1/1030013948… · gutta-percha tissue. This tissue cannot be boiled as it is destroyed by heat, and dependence