1. Restoration can be permanently inserted with a zinc phosphate, glass-ionomer or polycarboxylate cement.
2. Tooth should present as smooth a surface finish as possible. Smooth dentin surfaces are more easily cleaned of debris which can inhibit chemical bonding.
3. Avoid contaminating surface of dentin with wax, oil, varnish or any protein material which can inhibit chemical bonding.
4. Clean tooth surfaces. Tooth surface should not be dehydrated when cement is applied. Excessive drying concentrates protein debris and prevents efficient wetting of tooth surface.
5. Never use varnishes to protect tooth if polyacrylic acid cements are used (prevents chemical bonding to tooth structure).
6. Margins of cement should be protected with varnish after initial set (5 to 6 minutes). Under no circumstance should saliva come into direct contact with unset cement.

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