New Ceramic Multi-Unit Dental Abutments with an Antimicrobial Glassy Coating

Abstract

The choice of suitable materials and new designs in oral implantology and the subsequent enhancement of the characteristics of the dental implant developed is an important research topic with wide scope. The present work aims to develop a new multifunctional zirconia–ceria/alumina (Ce–TZP/Al2O3) composite with an antimicrobial glass-based coating to be used in multi-unit abutments compatible with commercially available Ti implants for peri-implantitis prevention. An airbrush spraying technique was effectively applied to coat the sintered ceramic composite starting from a glass powder suspension. This deposition technique was appropriate for obtaining continuous antimicrobial glass-based coatings with homogenous thickness (~35 µm) on ceramic dental implant components. The dental implant systems with the antimicrobial glassy coating were subjected to a mechanical integrity test following ISO 14801 to determine their long-term stability. The tested implant-coating structure seems to be stable under in vitro conditions with ultimate applied forces exceeding the maximum physiological occlusal loading force. This paper also presents a pilot clinical case report that shows peri-implant tissue around the mechanically stable glass coating with no signs of inflammation 1 year after implant insertion. This result is a preliminary probe of the durability and biological tolerance of the glassy material by the gingiva, as well as the antimicrobial effect on the peri-implant microbiota displayed by the coating.

Experimental and Statistical Modeling for Effect of Nozzle Diameter, Filling Pattern, and Layer Height of FDM-Printed Ceramic–Polymer Green Body on Biaxial Flexural Strength of Sintered Alumina Ceramic

“…It can be used in refractories, electrical insulators, wear-resistant mechanism parts, artificial jewelry, abrasive material, ceramic armor parts, etc. Among others, Al 2 O 3 is used in medicine for dental and orthopedic implants [5][6][7]. However, on the other hand, the high hardness and brittleness of ceramic materials also make it difficult for shaping and machining.…”

Research progress of local sustained-release drug delivery system in the treatment of peri-implantitis

“…It uses rapid prototyping technology to print personalized bone scaffolds suitable for different people according to the shape of bone defects as bone substitute materials to promote bone repair and regeneration. When it is loaded with different drugs, drugs can directly intervene in the lesion site by direct contact [22] . In 2021, Ahlfeld [23] et al,used 3D printing technology to combine calcium phosphate cement and fibrin gel to form a new biphasic bone structure, and loaded bone marrow mesenchymal stem cells in fibrin gel.…”

Functionalization of a zirconia surface by covalently immobilized fibronectin and its effects on resistance to thermal, acid, and mechanical exposure

“…The oral cavity with its natural teeth, as well as dental and implant prosthetic restorations, is constantly exposed to different pH values, temperatures, and mechanical stresses. Temperature and pH fluctuations, oxygen, bacteria, and the decomposition of food constantly attack its surfaces and interfaces 1 . The physiological pH range for resting saliva is between 6.2 and 7.6 2 .…”