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.