Biostimulation with diode laser positively regulates cementoblast functions, in vitro

Area of Science:

• Biomedical Engineering
• Cell Biology
• Periodontology

Background:

• Cementoblasts are crucial for periodontal ligament regeneration.
• Diode laser biostimulation is a potential therapeutic modality.
• Understanding laser effects on cementoblasts is vital for regenerative therapies.

Purpose of the Study:

• To evaluate the impact of diode laser biostimulation on cementoblast (OCCM.30) behavior.
• To assess changes in cementoblast proliferation, gene expression, and mineralization.
• To determine the potential of diode laser biostimulation in periodontal regenerative therapies.

Main Methods:

• OCCM.30 cells cultured on root plates were divided into control and laser-treated groups.
• Cells were irradiated with a low-level diode laser (0.3W, continuous wave, 60s/cm²).
• Proliferation, mineralized tissue-associated gene mRNA expression (Ibsp, Bglap, Col1a1, Runx2, BMPs), and biomineralization (von Kossa staining) were analyzed.

Main Results:

• Laser irradiation did not significantly alter cell proliferation until 96 hours but slowed the decline thereafter.
• Significant increases in integrin-binding sialoprotein (Ibsp), bone gamma-carboxyglutamate protein (Bglap), and Bone Morphogenetic Protein (BMP)-2, 3, 6, 7 mRNA expressions were observed.
• Laser treatment stimulated mineralized nodule formation in cementoblasts.

Conclusions:

• Diode laser biostimulation effectively modulates cementoblast behavior.
• The laser treatment upregulates mineralized tissue-associated genes and promotes mineralization.
• Biostimulation with diode lasers shows promise for enhancing periodontal regenerative therapies by activating cementoblasts.