1. Restoration can be permanently inserted with a zinc phosphate, glass-ionomer or polycarboxylate cement.
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  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.
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  3. Avoid contaminating surface of dentin with wax, oil, varnish or any protein material which can inhibit chemical bonding.
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  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.
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  5. Never use varnishes to protect tooth if polyacrylic acid cements are used (prevents chemical bonding to tooth structure).
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  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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