en Research Paper Research Paper <div style="text-align: justify;"><span style="font-size:11pt"><span style="line-height:200%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:200%"><span calibri="" light="" style="font-family:">Various analysis techniques were used to investigate the effects of P₂O₅ on the crystallization, mechanical features, and chemical resistance of canasite-based glass-ceramics. The results showed that canasite-type crystals were the primary crystalline phase in the examined glass-ceramics subjected to the two-step heat treatment, while fluorapatite was the secondary crystalline phase in some specimens. The microstructural observations by field emission electron microscope indicated that the randomly oriented interlocked blade-like canasite crystals decreased with an increase in the P₂O₅ content of the parent glasses. Among the examined glass-ceramics, the Base-P2 composition (containing 2 weight ratios of P₂O₅ in the glass) showed the most promising mechanical features (flexural strength of 176 MPa and fracture toughness of 2.9 MPa.m^1/2) and chemical resistance (solubility of 2568 &micro;g/cm²). This glass-ceramic could be further considered as a core material for dental restorations.</span></span></span></span></span></span><br> <br> &nbsp;</div> Glass-ceramic,Dental restorations,Canasite,Mechanical properties,Chemical durability 1 17 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-424-1&slc_lang=en&sid=1 Zahra Shamohammadi ghahsareh z.sh009@gmail.com 1800319475328460017384 1800319475328460017384 No Materials and Energy Research Center Sara Banijamali banijamalis@yahoo.com 1800319475328460017385 1800319475328460017385 Yes Materials and Energy Research Center Alireza Aghaei a-aghaei@merc.ac.ir 1800319475328460017386 1800319475328460017386 No Materials and Energy Research Center