【Yang Yeh】評論
Enamel: strong and brittlehigh elastic modulus -> hardest substance of human bodyhigh compressive strength + low tensile strength -> brittleDentin: more flexible, strong and resilientlow elastic modulushigh compressive strength + high tensile strength -> resilient(A) 應改為 low tensile strength
【ChiuYin】評論
門牙切緣平均-2mm小臼齒切緣平均-2.3-2.5mm大臼齒切緣平均-2.5-3mm