Scholarlink

<p>The mechanical stability and long-term success of dental implants depend on their ability to withstand occlusal loading and integrate effectively with surrounding bone tissue. Surface coating enhances implant biomechanical performance by reducing stress concentrations, minimizing micromotion, promoting osseointegration, and improving surface hardness, corrosion resistance, and bioactivity. The aim of the present study is to examine the biomechanical performance of topology-optimized mandibular implants coated with a range of materials, including bio ceramics (Active Bio glass, Hydroxyapatite, Calcium Titanate), bioinert metallic oxides (Aluminium Oxide and Titanium Oxide), metallic nitrides (Titanium Nitride and Chromium Nitride) and Graphene Oxide. The study focuses on optimizing the surface coating thickness and material selection to enhance the bio-mechanical stability of the coated implant. FEA (FEA) is used to evaluate the biomechanical performance of implant coatings under occlusal loading ranging from 70&#xa0;N to 150&#xa0;N, with coating thicknesses varied between 5&#xa0;μm and 10&#xa0;μm. This followed by multi-objective optimization using MOGA and Response Surface Methodology (RSM) to determine the optimal coating thickness that balances maximum load capacity and implant stability. Osseointegration potential is evaluated through a combination of biomechanical parameters, like stress reduction, micromotion between the implant and surrounding bone, including parameters like sliding distance, penetration, and interface pressure. Aluminium Oxide (Al₂O₃) at 7.5&#xa0;μm demonstrated the lowest sliding distance and interface pressure, indicating minimal micromotion and a reduced risk of implant dislodgement. Active Bioglass (BG) and Hydroxyapatite (HA) also showed favourable micromotion characteristics at similar thicknesses, promoting better bone-implant integration. However, thicker coatings (&gt; 8&#xa0;μm) led to a slight increase in micromotion, especially in terms of sliding distance and penetration. Titanium Nitride (TiN) and Chromium Nitride (CrN) exhibited reduced micromotion under high-load conditions, but increasing coating thickness beyond 8&#xa0;μm negatively affected flexibility, resulting in higher micromotion. Graphene Oxide (GO) and Calcium Titanate (CaTiO₃) required precise optimization of thickness (6.5 to 7.5&#xa0;μm) to maintain low micromotion and avoid stiffness. Optimization of implants’ topology and coating thickness significantly improve stress distribution, minimize micromotion, promote osseointegration, resulting in improved stability, durability, and patient outcomes.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Structural and functional optimization of bio ceramics, metallic oxides and nitrides coatings on topology optimized mandibular canine implant for enhanced biomechanical responses

  • 期刊论文

  • 发表日期：

    2026年2月9日

查看全文
  • Abhra Bhattacharyya,
  • Priyanshu Soni,
  • Parnika Shrivastava,
  • Sanjay Kumar Rai

摘要

The mechanical stability and long-term success of dental implants depend on their ability to withstand occlusal loading and integrate effectively with surrounding bone tissue. Surface coating enhances implant biomechanical performance by reducing stress concentrations, minimizing micromotion, promoting osseointegration, and improving surface hardness, corrosion resistance, and bioactivity. The aim of the present study is to examine the biomechanical performance of topology-optimized mandibular implants coated with a range of materials, including bio ceramics (Active Bio glass, Hydroxyapatite, Calcium Titanate), bioinert metallic oxides (Aluminium Oxide and Titanium Oxide), metallic nitrides (Titanium Nitride and Chromium Nitride) and Graphene Oxide. The study focuses on optimizing the surface coating thickness and material selection to enhance the bio-mechanical stability of the coated implant. FEA (FEA) is used to evaluate the biomechanical performance of implant coatings under occlusal loading ranging from 70 N to 150 N, with coating thicknesses varied between 5 μm and 10 μm. This followed by multi-objective optimization using MOGA and Response Surface Methodology (RSM) to determine the optimal coating thickness that balances maximum load capacity and implant stability. Osseointegration potential is evaluated through a combination of biomechanical parameters, like stress reduction, micromotion between the implant and surrounding bone, including parameters like sliding distance, penetration, and interface pressure. Aluminium Oxide (Al₂O₃) at 7.5 μm demonstrated the lowest sliding distance and interface pressure, indicating minimal micromotion and a reduced risk of implant dislodgement. Active Bioglass (BG) and Hydroxyapatite (HA) also showed favourable micromotion characteristics at similar thicknesses, promoting better bone-implant integration. However, thicker coatings (> 8 μm) led to a slight increase in micromotion, especially in terms of sliding distance and penetration. Titanium Nitride (TiN) and Chromium Nitride (CrN) exhibited reduced micromotion under high-load conditions, but increasing coating thickness beyond 8 μm negatively affected flexibility, resulting in higher micromotion. Graphene Oxide (GO) and Calcium Titanate (CaTiO₃) required precise optimization of thickness (6.5 to 7.5 μm) to maintain low micromotion and avoid stiffness. Optimization of implants’ topology and coating thickness significantly improve stress distribution, minimize micromotion, promote osseointegration, resulting in improved stability, durability, and patient outcomes.