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Updated: Apr 1, 2026
In Vitro Evaluation of The Effects Of Er,Cr:YSGG and Diode Lasers Used on Titanium Cylinder
Published on: June 6, 2025
Skeletal stem cell and bone implant interactions are enhanced by LASER titanium modification
Karin E Sisti1, María C de Andrés2, David Johnston2
1Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Institute of Developmental Sciences, University of Southampton, Southampton SO16 6YD, UK; Biomaterials Group, Institute of Chemistry, São Paulo State University (UNESP), Box 355, Araraquara, Brazil; Federal University of Mato Grosso do Sul (UFMS), Campo Grande, Brazil.
LASER-modified titanium surfaces enhance human skeletal stem cell adhesion and osteogenic gene expression. This modification promotes better osseointegration for orthopedic applications.
Area of Science:
- Biomaterials Science
- Orthopedic Research
- Stem Cell Biology
Background:
- Titanium (Ti) is a widely used biomaterial in orthopedics.
- Enhancing osseointegration is crucial for implant success.
- Understanding stem cell behavior on biomaterial surfaces is key to improving regenerative potential.
Purpose of the Study:
- To evaluate the osteo-regenerative potential of LASER-modified Titanium (Ti) surfaces.
- To assess the effect of Ytterbium-YAG (Yb-YAG) LASER modification on Ti.
- To investigate the interaction with human Skeletal Stem Cells (hSSCs).
Main Methods:
- Isolation of STRO-1(+) hSSCs from bone marrow.
- Culture of hSSCs on machined and LASER-modified Ti discs in basal and osteogenic media.
- Analysis using qRT-PCR, biochemistry (DNA, ALP), live/dead staining, and microscopy (SEM, confocal).
Main Results:
- LASER-modified Ti surfaces promoted enhanced cell spreading, adhesion, and morphological rearrangement of hSSCs.
- Increased Alkaline Phosphatase (ALP) specific activity and osteopontin expression were observed on LASER-modified Ti.
- Microscopy confirmed extensive proliferation and migration of hSSCs on all evaluated Ti surfaces.
Conclusions:
- LASER modification of Ti surfaces significantly influences hSSC behavior.
- Enhanced adhesion, osteogenic gene expression, and altered cell morphology were noted.
- Ti LASER modification holds promise for improving osseointegration in orthopedic applications.
