Dycal
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Dycal is a calcium hydroxide dental liner used to protect the pulp in deep cavities. It promotes healing by stimulating secondary dentin formation and provides insulation under restorations. With quick setting and radiopacity, it is ideal for indirect pulp capping and precise cavity lining. A dependable choice for dentists seeking pulpal protection and long-term restorative success.
Description
Dycal is a calcium hydroxide–based cavity liner used in restorative dentistry to protect the dental pulp and encourage secondary dentin formation. It is typically supplied in a base-and-catalyst paste system, designed for easy mixing and quick placement in deep cavities before final restoration. Known for its biocompatibility and therapeutic effect, Dycal serves as a protective barrier between the tooth structure and restorative materials.
Key features and benefits:
• Calcium hydroxide formulation stimulates reparative dentin formation
• Acts as a thermal and electrical insulator under restorations
• Radiopaque, enabling clear visibility on X-rays
• Fast-setting and easy to place in pinpoint areas
• Compatible with amalgam, glass ionomer, and certain composite restorations
Common applications:
• Indirect pulp capping to protect near-exposed pulp
• Base or liner beneath permanent restorations in deep cavities
• Emergency protection in carious lesions awaiting definitive care
How it compares:
• Compared to traditional ZOE liners, Dycal offers higher alkalinity, promoting pulp healing rather than only sealing
• Thinner and more precise than glass ionomer bases, ideal for pinpoint pulp protection
• Should not be used as a sole bulk base—requires a stronger overlying material
Handling guidance:
• Mix equal amounts of base and catalyst to a uniform shade
• Apply in a thin layer on the deepest dentinal area
• Avoid contact with enamel margins or occlusal surfaces
• Allow setting before placing intermediate base or restoration
Clinical best practice:
• Use in cases of reversible pulpitis or near-pulp exposures
• Do not use under resin composites without an intermediary barrier if discoloration risk exists
• Replace temporary liners during definitive restoration procedures
Dycal remains a trusted liner for pulp protection due to its proven biocompatibility, ease of use, and ability to support long-term tooth vitality in restorative treatments.
