Tack-cure vs conventional polymerization methods: A systematic review on resin composite cements' properties

Area of Science:

• Dental Materials Science
• Polymer Chemistry
• Biomaterials Engineering

Background:

• Conventional polymerization methods for resin composite cements include light-cure (LC) and self-cure (SC).
• Tack-cure (TC) is an alternative polymerization technique with potential benefits for handling and material properties.
• A systematic review is needed to evaluate the comparative efficacy of TC against conventional methods.

Purpose of the Study:

• To systematically review and compare the effects of tack-cure (TC) versus conventional polymerization methods (LC and/or SC) on resin composite cement properties.
• To assess the impact of TC on mechanical properties, interface quality, and ease of excess cement removal.

Main Methods:

• A comprehensive literature search was performed across multiple electronic databases (Web of Science, Cochrane Library, EMBASE, PubMed, Scopus, ProQuest).
• In vitro studies comparing TC with LC and/or SC polymerization were included, with no restrictions on language or publication date.
• Risk of bias was assessed using the QUIN tool, and the review followed PRISMA guidelines.

Main Results:

• Sixteen studies were included, with most showing a medium risk of bias.
• Tack-cure (TC) demonstrated comparable or superior mechanical properties to light-cure (LC) and consistently outperformed self-cure (SC) alone.
• TC facilitated easier excess cement removal and improved interface quality, though results varied by cement type and protocol.

Conclusions:

• Tack-cure (TC) polymerization can yield mechanical properties and interface quality comparable or superior to conventional methods for resin composite cements.
• TC enhances handling and excess cement removal without negatively impacting material properties, suggesting clinical utility.
• Clinicians should adhere to manufacturer instructions and consider specific cement characteristics when employing TC.