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30 prosthodontic section DENTAL TECHNOLOGY, JANUARY-MARCH 2025

REVOLUTIONIZING PROSTHODONTICS WITH 3D PRINTING

RAMIT LAMBA

INTRODUCTION
In recent years, 3D printing has emerged as a game changing technology in
dentistry, particularly in the field of prosthodontics. As the demand for pre-
cision, efficiency, and personalization grows, 3D printing bridges the gap
between traditional techniques and digital innovation. As more and more
clinics are going digital by owning Intraoral scanners, 3D printing materials
are taking over the space of Gypsums in dentistry. From diagnostic wax-ups, FIG 1: Asiga Composer: High- FIG 2: Intuitive interface for precise dental model
temporary crowns, splints, definitive prostheses, this technology is trans- precision dental 3D printing setup and 3D print preparation.
forming the way prosthodontists diagnose, plan, and deliver care. for models, crowns, and ortho-
dontic solutions.
THE DIGITAL WORKFLOW: A GAME CHANGER
The integration of 3D printing starts with digital impressions thus, eliminat-
ing the discomfort and inaccuracy of conventional impressions. Intraoral
scanners capture highly accurate images, which are then used to design
restorations using a CAD (Computer-Aided Design) software. Once final-
ized, these designs are fabricated using 3D printers with materials suitable
for clinical or laboratory use.
This fully digital workflow offers a range of clinical advantages:
• Enhanced accuracy: Digital impressions and 3D printed models pro-
vide superior marginal fit and occlusal accuracy compared to conventional
methods.
• Reduced turnaround time: Immediate design and in-house fabrica- FIG 3: Finished dental print FIG 4: 3D printed implant model featuring precision
tion significantly cut down chairside and lab time, enabling faster delivery attached to build plate—preci- dies and implant analog for accurate prosthetic
of restorations. sion parts ready for post-pro- planning
• Predictable outcomes: The ability to simulate and visualize the final cessing.
prosthesis before printing enhances treatment planning and patient commu-
nication.

CLINICAL APPLICATIONS AND PRACTICAL TIPS
1. Diagnostic Wax-ups and Treatment Planning
• Practical Tip: Use mock-up models for patient education and approvals.
Send pre-op photos and scans to the lab for smile simulation and printed
mock-ups. This helps in patient acceptance.

2. Provisional and final restorations
• Use case: Same-day crowns or bridges for temporization during long
treatments.
• Material tip: Use biocompatible Class II resins for intraoral use. High-
performance printable resins now provide over 6 months of in-mouth
durability.

3. Surgical guides FIG 5: Pre-surgical clinical view: Implant osteotomies completed and ready for surgi-
• Clinical integration: Design implant guides based on CBCT + IOS cal guide placement to ensure accurate implant positioning. (Credit: Dr. Manav Kalra)
data. Print guides within 3–5 hours for flapless, precise implant surgery.
• Lab collaboration: Labs can handle design; clinics print in-house or feasible.
receive ready-to-use guides. • Better communication: Patients can visualize their restora-
tions digitally, leading to greater understanding and acceptance.
4. Removable Prosthodontics
• Tip for labs: Use 3D printing for denture try-ins and baseplates. Saves CHALLENGES AND CONSIDERATIONS
1–2 patient appointments. While the benefits are compelling, challenges remain:
• Clinical tip: Capture a digital impression post-extraction for immediate • Initial investment: High-quality 3D printers and a CAD/CAM
dentures. Delivery possible within 24–48 hours. software come at a significant cost.
• Learning curve: Digital proficiency is essential; training for
5. Splints and Night Guards clinicians and technicians is critical for successful adoption.
• In-Clinic use: Fabricate splints on the same-day for bruxers or TMD • Material limitations: While improving, not all printable
patients. materials match the mechanical properties of conventional
• Resin selection: Use flexible yet durable resins like KeySplint Soft or materials like zirconia or metal ceramics.
Hard OR D-Tech resin for better comfort and longevity.
• Adjustment tip: Use a fine carbide bur and polish with pumice—no CHAIRSIDE 3D PRINTING
glazing needed. The integration of 3D printing into dental clinics is becoming more
common nowadays. The advantage of an In-house lab at a low
PATIENT BENEFITS investment compared to the milling unit setup is a lucrative option
From the patient’s perspective, 3D printing offers: for the clinicians planning to make their first move. Chairside 3D
• Improved comfort: Digital scans are quick and non-invasive. printers now enable clinicians to fabricate surgical guides, splints,
• Faster delivery: Same-day or next-day prosthesis fabrication is now crowns, and temporary prostheses within hours thus, reshaping
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