A novel bio-active adhesive monomer induces odontoblast differentiation: a comparative study

Area of Science:

• Biomaterials Science
• Dental Materials
• Regenerative Dentistry

Background:

• Odontoblast-like cells are crucial for dentine formation and repair.
• Novel adhesive monomers are being developed to improve dental restorative materials.
• Evaluating the biocompatibility and bioactivity of new monomers is essential for their clinical application.

Purpose of the Study:

• To assess the in vitro effects of the novel adhesive monomer CMET on odontoblast-like cell proliferation, mineralization, and differentiation.
• To compare CMET's performance with 4-methacryloxyethyl trimellitate (4-MET), calcium hydroxide (CH), and mineral trioxide aggregate (MTA).

Main Methods:

• Rat odontoblast-like MDPC-23 cells were treated with CMET, 4-MET, CH, and MTA at various concentrations.
• Cell viability was measured using CCK-8 assay.
• Gene expression of odontogenic markers, cytokines, and integrins was analyzed via real-time RT-PCR.
• Alkaline phosphatase (ALPase) activity and alizarin red S staining assessed mineralization capacity.

Main Results:

• CMET exhibited the lowest cytotoxicity and significantly enhanced cell viability at appropriate concentrations compared to controls.
• CMET treatment upregulated odontogenic markers and integrin expression more than CH and MTA.
• CMET dose-dependently increased mineralization and maintained this effect after 8 weeks of storage.
• CH and MTA treatments induced higher levels of pro-inflammatory cytokines and mineralization.

Conclusions:

• CMET demonstrates excellent biocompatibility and low cytotoxicity.
• This novel monomer effectively stimulates odontoblast-like cell proliferation, differentiation, and mineralization.
• CMET shows significant potential for application in dentine regeneration therapies.