Prepared By: Noor Al-Deen M. Al-Khanati

Porcelain Teeth Acrylic Teeth

J Greater translucency & depth of color

L Less translucency

J Esthetically more acceptable

L Less acceptable

L Cause clicking sound J No clicking sound

L More density (2.4g/cc) J Less density (1.2g/cc)

L Heavier in weight J Lighter in weight

J Lower coefficient of thermal expansion (CTE)

L High coefficient of thermal expansion

L Cause crapping & cracking of the denture base around the base of porcelain teeth

J Not causing crapping & cracking

J Hardness is very high (VHN= 500)

L Hardness is low (VHN= 20)

J Less abrasion to teeth L Teeth show abrasion

L Attachment to base through mechanical means of retention.

J Attachment through chemical union

L Less compatibility with the denture base

J More compatible

J High modulus of elasticity (80)

L Low modulus of elasticity (2.5)

L Transmit higher forces to the supporting tissue

J Transmit lower forces to the supporting tissue

L Difficult adjustment & grinding of teeth

J During adjustment, grinding of teeth is simple & easy

L Brittle & more liable to chip & fracture

J Not brittle