Digital Workflow for Interim Prosthetic Rehabilitation Through the All-on-4 Concept Using 3D Printing Additive...

Area of Science:

• Dentistry
• Biomaterials Science
• Digital Health

Background:

• The evolution of fully digital workflows in implant dentistry aims to enhance rehabilitation efficiency and patient satisfaction.
• Further scientific validation is required for these advanced digital protocols.

Purpose of the Study:

• To evaluate the 6-month outcomes of implant-supported fixed prostheses for full edentulism rehabilitation.
• To assess the efficacy of OnX Tough 2 resin and the Pro 2 3D printer within the All-on-4 concept.

Main Methods:

• The study included 16 patients receiving 20 implant-supported fixed full-arch prostheses using the All-on-4 concept.
• Both stackable guide and photogrammetry protocols were employed.
• Primary outcome: implant and prosthetic survival. Secondary outcomes: manufacturing issues, passive fit, marginal bone loss, complications, hygiene indexes, and patient-reported outcomes (OHIP-14).

Main Results:

• A 90% prosthesis survival and 97.5% implant survival rate at 6 months were observed.
• Mean marginal bone loss was 0.31 mm ± 0.52 mm at 4 months.
• High patient satisfaction reported for comfort (9.35/10) and chewing (8.79/10), with a low mean OHIP-14 score of 1.61.

Conclusions:

• Fully digital workflows utilizing 3D-printed prostheses with the All-on-4 concept are a viable short-term solution for full-arch rehabilitation.
• The study demonstrates favorable implant survival and high patient-reported outcomes.