My dentist recommended zirconia crown for my implant #5 (w/ zirconium abutment for tooth #5) b/c the margin is so small. I requested Emax crown for asthetic purposes, but he said zirconium crown is more durable. I don't like the opaque fake look of this zirconium crown. Is Emax crown not recommended for implants/zirconium abutment? Should I sacrifice 'durability' for better aesthetics with emax crown?