[A study on the bond interface between low-fusing dental porcelain and pure titanium]

Area of Science:

• Biomaterials Science
• Dental Materials Research
• Surface Science

Context:

• Dental prosthetics require strong, durable bonds between ceramic materials and metal frameworks.
• Pure titanium is a biocompatible metal used in dental implants and restorations.
• Low-fusing dental porcelains offer advantages in processing and reduced firing temperatures.

Purpose:

• To investigate the interfacial topography and ionic diffusion between a novel low-fusing porcelain (La-porcelain) and pure titanium.
• To compare the bonding characteristics of La-porcelain with a commercially available porcelain (Vita Titankeramik) on pure titanium.
• To elucidate the bonding mechanisms, including mechanical and chemical interactions, at the porcelain-titanium interface.

Summary:

• La-porcelain demonstrated excellent permeation and diffusion onto pure titanium surfaces.
• Scanning Electron Microscopy (SEM) and Electron Probe Microanalysis (EPMA) revealed significant ionic diffusion of stannum and silicon at the interface.
• The La-porcelain to pure titanium bond interface exhibited a finer microstructure compared to Vita Titankeramik.

Impact:

• Establishes La-porcelain as a material capable of forming excellent bonds with pure titanium.
• Highlights the critical role of ionic diffusion, particularly stannum, in achieving robust porcelain-to-metal bonding.
• Provides insights into optimizing dental ceramic-metal interfaces for enhanced longevity and performance of dental restorations.