South Korean company Graphy has introduced a new generation of materials and technological solutions that claim to overcome the limitations of traditional milling and thermoforming. By integrating developments in materials science with a fully digital workflow, the company positions itself not merely as a material supplier, but as a partner in clinical workflows of a new level.
Graphy’s technological stack includes a spectrum of 3D-printed resins (Tera Harz line) for the production of single crowns, fixed partial dentures, and complete dental prosthetic constructions. The materials are formulated without methyl methacrylate, bisphenol A, and TPO photoinitiator, which reduces the risk of residual substance release and enhances the biocompatibility of restorations.
The principal distinction of Graphy’s approach consists in the development of resins with characteristics that imitate the biomechanical behavior of natural dentition. The elastic modulus of the materials provides shock absorption under occlusal load, reducing stress concentration in the implant-bone interface zone. Such distribution of bending stresses is critical for extended constructions (fixed partial dentures, all-on-X prostheses), where the risk of overloading supporting elements is significantly higher than in single restorations.
Furthermore, the materials demonstrate wear resistance close to that of natural tooth enamel, which contributes to protection of the antagonistic dentition from premature abrasion. Unlike rigid traditional prostheses, Graphy’s 3D-printed restorations allow chairside repair without complete replacement, which reduces the cost of correction and increases the practical feasibility of digital technologies in clinical practice.
The workflow provides for alcohol-free post-processing: the Tera Harz Spinner centrifuge removes residual unpolymerized resin without the use of isopropyl alcohol, which simplifies equipment maintenance and improves working conditions for personnel. Polymerization under nitrogen (Tera Harz Cure) prevents microporosity and reduces water absorption and discoloration of the material, ensuring long-term color stability of restorations in the oral cavity.
Post-processing under an inert atmosphere maintains a high degree of polymer conversion, minimizing the release of residual components and maximizing mechanical strength and long-term intraoral stability. This approach is particularly relevant in the production of removable dentures, where the material is subjected to repeated load cycling and contact with saliva.
Graphy’s solution in the field of removable prosthodontics deserves attention: chemical bonding of printed teeth directly to the denture base (without a separate adhesive) followed by polymerization of the assembly simplifies production and eliminates the risk of debonding — a common problem in traditional denture manufacturing. This approach guarantees the monolithic integrity of the construction and excludes the possibility of separation of the base and artificial teeth during transportation or use.
The product portfolio is supported by peer-reviewed publications and regulatory approvals, including FDA 510(k) and CE marking for Tera Harz Clear, which confirms the compliance of the materials with international safety and quality standards. Graphy’s ecosystem remains hardware-compatible with open standards, allowing integration into existing digital workflows of dental institutions without the need to replace all equipment and retrain personnel.
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