Ref: Sturdvant textbook.

• NEED FOR RESTORATION :
• To treat a teeth with carious lesion
• To treat defective restoration
• To treat fracture tooth
• For esthetics
• For prophylaxis.
• OBJECTIVE OF TOOTH PREPARATION
• Remove all defects,protect pulp
• Extend restoration as conservatively as possible so as to protect natural tooth
• Preparation to be done in such a way that tooth cannot be displaced under masticatory forces.
• Form, structure function and esthetics to be considered while tooth preparation.