Objectives of cleaning and shaping are all except:
Schilder objectives of cleaning and shaping of root canals:
a) Mechanical objectives:
• Continuous tapering canal shape, with the narrowest cross-sectional diameter apically and the widest diameter coronally.
• Walls should taper evenly towards apex
• To give the prepared root canal the quality of flow.
• Should keep the apical foramen as small as practical.
 
b) Biologic objectives:
• To debride and disinfect root canal system
• Necrotic debris should not be forced periapically
• Sufficient space for intracanal medicaments and irrigants should be created.