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Updated: Feb 2, 2026
07:05
In Vitro Evaluation of The Effects Of Er,Cr:YSGG and Diode Lasers Used on Titanium Cylinder
Published on: June 6, 2025
575
[Selective laser sintering and performances of porous titanium implants]
Ting Wei1, Xin-Wei Zhang2, Hui-Qiang Sun3
1Dept. of Prosthodontics, College of Stomatology, Shandong University, Jinan 250012, China.
Summary
Porous titanium implants fabricated via selective laser sintering show mechanical properties similar to bone. Combined with chitosan/hydroxyapatite coating, these implants enhance osseointegration and promote stable bone formation.
Area of Science:
- Biomaterials Science
- Orthopedic Engineering
- Materials Science
Background:
- Porous titanium (Ti) implants are crucial for bone defect repair.
- Selective laser sintering (SLS) offers a method for fabricating complex porous structures.
- Enhancing osseointegration of Ti implants is a key challenge in orthopedic surgery.
Purpose of the Study:
- To evaluate the mechanical properties and biocompatibility of SLS-fabricated porous Ti implants.
- To investigate the effect of chitosan (CS)/hydroxyapatite (HA) composite coating on osseointegration.
- To assess the potential of coated porous Ti implants for promoting bone tissue regeneration.
Main Methods:
- Ti6Al4V specimens were fabricated using SLS.
- CS/HA composite coating was applied to selected specimens.
- Mechanical properties were assessed, and scanning electron microscopy was used for surface analysis.
- In vitro cell culture studies (MC3T3-E1 cells) evaluated cell viability (live/dead staining, MTT assay) and differentiation (ALP levels).
- In vivo studies involved implanting specimens in rabbit femurs to assess biological performance.
Main Results:
- Porous Ti specimens exhibited quasi-elastic gradients comparable to cortical and cancellous bone at specific porosities (30% and 70%).
- The porous Ti implants demonstrated good biocompatibility.
- The CS/HA coating significantly promoted MC3T3-E1 cell proliferation and differentiation.
- Coated implants facilitated bone tissue ingrowth into the porous structure, leading to enhanced osteogenesis.
Conclusions:
- SLS-produced porous titanium implants possess favorable mechanical properties and biocompatibility.
- The addition of CS/HA coating enhances the bone-inducing capabilities of the implants.
- These composite-coated implants support stable osteogenesis and show promise for orthopedic applications.
Keywords:
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