Preparation of Porous Titanium Dental Implant by 3D Printing/Composite Coating and Its Biomechanical Properties and Flexural Strength

2020 ◽  
Vol 12 (10) ◽  
pp. 1492-1501
Author(s):  
Chengxue Yang ◽  
Zhengwen Yu ◽  
Yuanzhu Long ◽  
Lin Chen
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Flexural Strength ◽  
Dental Implants ◽  
Composite Coating ◽  
Test Specimen ◽  
Biomechanical Properties ◽  
Porous Titanium ◽  
Nano Coating ◽  
Flexural Resistance

Dental implants have been widely used in clinical practice. The 3D modeling software was used to design threedimensional (3D) models (in the shapes of long strips, discs, and screws), i.e., the Ti2.6Al1.2 V0.42 specimens. Meanwhile, the implant material was electrochemically precipitated, and a layer of chitosan nano-coating was added to the surface. To test the bone-binding ability and planting success rate of the material, the mechanical properties of the specimens with different porosity (0%∼70%) were firstly analyzed by the three-point bending method. Then, the screw-shaped titanium alloy specimens were divided into the solid group, the solid coating group, the solid 30% group, the coating 30% group, the solid 50% group, and the coating 50% group. The MC3T3-E1 cells were cultured, and the in vitro biological properties of the specimens were tested from different angles. The biomechanical properties and flexural strength of screw-shaped titanium alloy specimens in different groups were tested by using a universal testing machine. In the experiment, the prepared dental implants had the complete surface, uniform pore distribution, dense coating distribution, and less overall cracks. The elastic gradient of porous titanium specimens would decrease due to the increase of porosity. The cell activity of the test specimen was higher, and the percentage of viable cells exceeded 80%. The MTT test confirmed that the pores of the test specimen could promote the increase of MTT value (P < 0.05), and the test specimen/composite coating had higher ALP levels compared with the test pieces with no surface treatments (P < 0.05). In biomechanical properties and flexural strength tests, the increase of pores increased the biomechanical properties (P < 0.05) and decreased the flexural resistance (P < 0.05), while the increase of coating decreased the biomechanical properties and increased the flexural resistance (P < 0.05). The porous titanium alloy specimens were successfully prepared, and the chitosan-based composite coating was applied. The material was non-toxic, which was beneficial to cell proliferation and had good mechanical properties, thereby contributing to the growth of new bone.

The microstructure and mechanical properties of Co/YCF102 composite coating

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Wenchao Xi ◽  
Boxue Song ◽  
Jinlong Dong ◽  
Tianqi Zhang ◽  
Tianbiao Yu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Composite Coating ◽  
Laser Cladding ◽  
Machine Tools ◽  
Base Material ◽  
Mixed Powder ◽  
Content Type ◽  
High Microhardness ◽  
Aisi 1045

Purpose Laser cladding has been used in the field of repairing damaged parts of machine tools due to its advantages of less processing restrictions and easy formation of a good metallurgical bond with the base material. However, the mechanical properties of the coating sometimes cannot meet the process requirements. Therefore, the purpose of this paper is to prepare coatings with high microhardness and flexural strength. Design/methodology/approach The YCF102 alloy powder was mixed with different contents of Co and tested for laser cladding on AISI 1045 substrate under the same process parameters. The main phase composition of the coating was revealed by the XRD results. The main chemical composition of the coating was determined by the SEM and EDS results. In addition, the effect of Co content on the microstructure, microhardness and flexural strength of the coatings was investigated. Findings The results show that when the Co content is 2 wt% and 4 wt%, Co does not form compounds with other elements, but is uniformly distributed in the coating. And when the Co content is 6 wt% and 8 wt%, the Co reacts with Fe in the coating and generates Co3Fe7 in situ. The increase in Co did not result in a monotonic change in microhardness, but significantly improved the flexural strength and the flatness of the microstructure of the coating. When the Co content of the mixed powder is 8 wt%, the coating has high microhardness and flexural strength. Originality/value Co/YCF102 composite coating with high microhardness and flexural strength was prepared. This paper provides a theoretical and practical basis for research in the area of repairing damaged parts of machine tools by laser cladding.

scholarly journals Heat treatment effect on the mechanical properties, roughness and bone ingrowth capacity of 3D printing porous titanium alloy

RSC Advances ◽  
2018 ◽  
Vol 8 (22) ◽  
pp. 12471-12483 ◽  
Author(s):  
Zuhao Li ◽  
Chang Liu ◽  
Bingfeng Wang ◽  
Chenyu Wang ◽  
Zhonghan Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Titanium Alloy ◽  
3D Printing ◽  
Mechanical Strength ◽  
Clinical Application ◽  
Treatment Effect ◽  
Bone Ingrowth ◽  
Porous Titanium

The weak mechanical strength and biological inertia of Ti–6Al–4V porous titanium alloy limit its clinical application in the field of orthopedics.

scholarly journals Biomechanical Properties of Bone and Mucosa for Design and Application of Dental Implants

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2845
Author(s):  
Michael Gasik ◽  
France Lambert ◽  
Miljana Bacevic
Keyword(s):  
Mechanical Properties ◽  
Dental Implants ◽  
Soft Tissues ◽  
Biomechanical Properties ◽  
Stress And Strain ◽  
Pathological Conditions ◽  
Strain Components ◽  
Mechanical Factors ◽  
Movement And Deformation ◽  
Mechanical Movement

Dental implants’ success comprises their proper stability and adherence to different oral tissues (integration). The implant is exposed to different mechanical stresses from swallowing, mastication and parafunctions for a normal tooth, leading to the simultaneous mechanical movement and deformation of the whole structure. The knowledge of the mechanical properties of the bone and gingival tissues in normal and pathological conditions is very important for the successful conception of dental implants and for clinical practice to access and prevent potential failures and complications originating from incorrect mechanical factors’ combinations. The challenge is that many reported biomechanical properties of these tissues are substantially scattered. This study carries out a critical analysis of known data on mechanical properties of bone and oral soft tissues, suggests more convenient computation methods incorporating invariant parameters and non-linearity with tissues anisotropy, and applies a consistent use of these properties for in silico design and the application of dental implants. Results show the advantages of this approach in analysis and visualization of stress and strain components with potential translation to dental implantology.

Biomechanical Properties of Orthopedic and Dental Implants

2021 ◽  
pp. 506-518
Author(s):  
Manjeet Kumar ◽  
Rajesh Kumar ◽  
Sandeep Kumar ◽  
Chander Prakash
Keyword(s):  
Mechanical Properties ◽  
Dental Implants ◽  
Mechanical Stability ◽  
Stress Shielding ◽  
Surface Characteristics ◽  
Biomechanical Properties ◽  
Foreign Body Response ◽  
Load Bearing ◽  
Age Related ◽  
Body Response

The demand for the orthopedic and dental implants has increased sharply in last decade due to physical traumas and age-related deficiencies. The material used for orthopedic and dental implants should be biocompatible to ensure the adaptability of the implant in the human body. The mechanical stability of implants is dependent on mechanical properties and surface characteristics essential to ensure corrosion and wear resistance. The requirement of mechanical properties also differs substantially from load-bearing to non-load-bearing implants. There are many problems arising due to lack of sufficient biocompatibility, like infection, poor osseointegration, and excessive foreign body response. Fatigue failure, stress shielding, and bone resorption are some major problems associated with lack of mechanical stability. Numerous conventional materials, coatings, and nanomaterials have been used to enhance the implant stability.

Biomechanical Properties of Orthopedic and Dental Implants

2019 ◽  
pp. 1-13 ◽  
Author(s):  
Manjeet Kumar ◽  
Rajesh Kumar ◽  
Sandeep Kumar ◽  
Chander Prakash
Keyword(s):  
Mechanical Properties ◽  
Dental Implants ◽  
Mechanical Stability ◽  
Stress Shielding ◽  
Surface Characteristics ◽  
Biomechanical Properties ◽  
Foreign Body Response ◽  
Load Bearing ◽  
Age Related ◽  
Body Response

The demand for the orthopedic and dental implants has increased sharply in last decade due to physical traumas and age-related deficiencies. The material used for orthopedic and dental implants should be biocompatible to ensure the adaptability of the implant in the human body. The mechanical stability of implants is dependent on mechanical properties and surface characteristics essential to ensure corrosion and wear resistance. The requirement of mechanical properties also differs substantially from load-bearing to non-load-bearing implants. There are many problems arising due to lack of sufficient biocompatibility, like infection, poor osseointegration, and excessive foreign body response. Fatigue failure, stress shielding, and bone resorption are some major problems associated with lack of mechanical stability. Numerous conventional materials, coatings, and nanomaterials have been used to enhance the implant stability.

scholarly journals In vitro and in vivo evaluations of mechanical properties, biocompatibility and osteogenic ability of sintered porous titanium alloy implant

RSC Advances ◽  
2018 ◽  
Vol 8 (64) ◽  
pp. 36512-36520 ◽  
Author(s):  
Ji Li ◽  
Zhongli Li ◽  
Ruiling Li ◽  
Yueyi Shi ◽  
Haoran Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Bone Ingrowth ◽  
Porous Titanium ◽  
Porous Ti ◽  
Good Biocompatibility

The sintered porous Ti6Al4V with 75% porosity has optimal mechanical properties, good biocompatibility and osteogenic ability for more bone ingrowth.

Mechanical properties and biomechanical compatibility of porous titanium for dental implants

1985 ◽  
Vol 19 (6) ◽  
pp. 699-713 ◽  
Author(s):  
Kenzo Asaoka ◽  
Norihiko Kuwayama ◽  
Osamu Okuno ◽  
Ishi Miura
Keyword(s):  
Mechanical Properties ◽  
Dental Implants ◽  
Porous Titanium ◽  
Biomechanical Compatibility
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