[Comparative study of implant-retained fixed restorations with milled and casted titanium frames]

Area of Science:

• Biomaterials Science
• Dental Implantology
• Materials Engineering

Background:

• Implant-retained restorations are crucial in modern dentistry.
• Both casted and milled titanium frames are used, but their long-term performance differences require detailed comparison.
• Understanding material properties is key to improving restoration longevity.

Purpose of the Study:

• To compare the long-term clinical and experimental results of implant-retained restorations using casted versus milled titanium frames.
• To evaluate the electrochemical behavior and biocompatibility of casted and milled titanium.
• To assess the marginal fit precision of both types of frames.

Main Methods:

• Comparative clinical and experimental analysis of casted and milled titanium frames.
• Electrochemical testing of titanium-implant contact.
• In vitro biocompatibility assessment using mesenchymal stem cells.
• Marginal fit evaluation via cross-section analysis.

Main Results:

• Milled titanium frames demonstrated superior marginal fit precision compared to casted frames.
• Electrochemical properties of milled and casted titanium in contact with implants were comparable.
• Biocompatibility assessments in mesenchymal stem cells cultures showed no significant differences between milled and casted titanium.

Conclusions:

• Milled titanium frames offer enhanced marginal fit, potentially leading to improved long-term outcomes for implant restorations.
• Both fabrication methods yield titanium with acceptable electrochemical and biocompatibility profiles for dental applications.
• Milling technology presents a viable alternative for producing high-precision frames in implant dentistry.