Tuneable, inkjet-printable polymers and a dedicated 3D‑printing hub aim to advance denture design and function

Introduction / background

A research programme at the University of Colorado Anschutz School of Dental Medicine (Aurora, Colo., US) is developing inkjet‑printable polymer systems and a bespoke inkjet 3D printer to produce multi‑material, monolithic removable prostheses in a single build. The initiative follows recent progress in multi‑material 3D printing for dentures and seeks to enable spatial control of mechanical and antimicrobial properties within a single printed prosthesis.

What was studied or performed

Led by Prof. Jeffrey Stansbury, senior associate dean for research, the team is formulating polymer systems whose stiffness, elasticity and related mechanical characteristics can be tuned during inkjet printing. A custom inkjet‑based 3D printer has been engineered to process these materials. In parallel, the group is developing antimicrobial and antifungal resin formulations intended for incorporation into 3D‑printed dentures.

To facilitate translation, the dental school has established a dedicated 3D‑printing hub that integrates materials development, clinical application and dental education, enabling students and clinicians to work with the technology in a clinical context. The group plans a first clinical trial comparing dentures printed from the new materials with conventionally produced dentures, measuring patient satisfaction and functional outcomes.

Key findings

• The inkjet‑printable polymers under development permit localized control of mechanical properties within a monolithic removable prosthesis, potentially allowing different denture regions to respond differently to functional loading.
• Antimicrobial/antifungal materials developed in the programme have demonstrated significant activity against Streptococcus species and Candida in laboratory testing.
• The same custom printer platform is intended to support evaluation of these antimicrobial materials and further advanced formulations.
• The dental school reports this is the first dental education facility to combine materials development, clinical application and teaching in a single 3D‑printing hub to support clinical translation.
• Planned clinical evaluation will assess patient‑reported and functional endpoints versus conventional dentures.

“This pathway is likely going to improve the oral health of anybody wearing a full or partial denture made with this material.” — Prof. Jeffrey Stansbury

Relevance for dental practice

If the laboratory results and planned clinical comparisons are validated, tunable polymer formulations printed with an inkjet multi‑material platform could permit more sophisticated denture design tailored to regional load distribution, with potential implications for patient comfort, prosthesis durability and infection control. The integrated 3D‑printing hub also creates an educational and clinical pathway for dental students and staff to adopt and evaluate the technology in patient care.

As noted by the authors, comparative clinical data are required before changing practice; a recent systematic review cited by the group found that 3D‑printed complete dentures yield broadly comparable clinical outcomes to conventional and milled dentures, although retention may remain stronger with conventional fabrication methods.

Limitations and context

The report describes materials development and preclinical antimicrobial activity; clinical efficacy, long‑term durability and safety remain to be established through the planned trials. Statements about potential oral‑health benefits reflect the investigators’ expectations and require confirmation in controlled patient studies. The systematic review referenced indicates parity in many clinical outcomes for 3D‑printed versus conventional dentures but highlights retention differences favouring conventional dentures.

SOURCE

https://www.dental-tribune.com/news/researchers-target-tuneable-denture-materials-for-next-generation-prostheses/