A customizable dental impression and bite registration system for streamlining single-visit denture fabrication

Background

The field of dental prosthetics, particularly the fabrication of complete dentures, is a critical aspect of restorative dentistry, serving patients who have lost all their natural teeth. Accurate dental impressions and bite registrations are essential for creating well-fitting, functional dentures that restore oral function and aesthetics. Traditionally, this process is labor-intensive and requires multiple clinical visits: initial appointments are dedicated to preliminary impressions, followed by separate sessions for final impressions, bite registration, and subsequent denture try-ins and adjustments. This multi-step protocol not only prolongs treatment timelines but also increases patient discomfort, inconvenience, and overall healthcare costs. The need for a more efficient, patient-friendly solution that consolidates these steps into fewer appointments is increasingly recognized, especially as the demand for dentures rises among aging populations.

Current approaches to denture fabrication are hampered by the limitations of conventional impression trays and bite registration techniques. Standard trays, typically made from rigid plastic or metal, are not easily customizable to individual oral anatomies, often resulting in less precise impressions. Moreover, bite registration—a critical step for establishing the correct occlusal vertical dimension (OVD)—is usually performed separately using wax rims or other materials, necessitating additional appointments and increasing the risk of errors in transferring occlusal relationships. The lack of integration between impression-taking and bite registration means that clinicians must repeatedly adjust and verify records, leading to inefficiencies and potential inaccuracies in the final prosthesis. Furthermore, the materials and adhesives used in traditional systems can be technique-sensitive and uncomfortable for patients, further complicating the workflow and potentially compromising the fit and function of the resulting dentures.

Technology

This dental impression tray system is an integrated solution designed to streamline the fabrication of complete dentures by enabling the simultaneous capture of dental impressions and bite registration in a single clinical visit. The system features upper and lower thermoplastic trays, each with a concave inner surface to hold impression material and a convex outer surface to which adjustable wax bite registrations are attached. These wax registrations can be multilayered, allowing for selective removal or supplementation with arc-shaped wax plates to precisely adjust the occlusal vertical dimension (OVD). The trays are softened in a specialized water bath that submerges only the tray portion, keeping the wax bite registrations above water to prevent softening. Once heated, the trays are molded intraorally to the patient’s anatomy, and the OVD is fine-tuned by adding or removing wax layers or plates, capturing both the anatomical and functional aspects required for accurate denture fabrication.

What differentiates this technology is its ability to consolidate multiple traditionally separate steps—preliminary impressions, final impressions, and bite registration—into a single, efficient procedure. The integration of customizable, heat-moldable trays with adjustable wax bite registrations and arc-shaped wax plates allows for precise, real-time adaptation to the patient’s unique oral anatomy and occlusal requirements. The specialized water bath apparatus ensures that only the thermoplastic tray is softened, preserving the integrity of the wax bite components for accurate registration. This approach not only reduces patient chair time and the number of required visits but also enhances the accuracy and fit of the final dentures. Additionally, the system’s compatibility with digital scanning and rapid manufacturing techniques, such as 3D printing, further accelerates the denture production process, making it possible to deliver high-quality, custom dentures within the same day.

Benefits

• Enables simultaneous capture of final dental impressions and accurate bite registration in a single clinical visit, reducing patient chair time and number of visits.
• Thermoplastic trays can be custom molded intraorally for a precise fit, improving denture accuracy and comfort.
• Adjustable multilayer wax bite registrations and arc-shaped wax plates allow precise control of occlusal vertical dimension (OVD) for optimal denture fit.
• Specialized water bath heating system softens trays while protecting wax components, ensuring consistent and controlled tray molding.
• Streamlines denture fabrication workflow, facilitating rapid digital scanning and same-day denture production through 3D printing or other manufacturing methods.
• Reduces complexity and errors associated with traditional multi-step impression and bite registration processes.
• Customizable wax layers enable easy intraoral adjustments to accommodate individual patient anatomy and occlusal requirements.

Applications

• Same-day complete denture fabrication
• Digital denture design and scanning
• Custom-fit impression and bite registration
• Rapid 3D-printed denture production

Additional info

This dental impression system utilizes thermoplastic upper and lower trays with integrated, adjustable wax bite registrations. Trays soften in a specialized water bath for custom intraoral molding, while wax remains firm. This enables simultaneous final impression and occlusal vertical dimension capture in a single visit, streamlining denture fabrication.