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Background: Implant surgical guides manufactured in-house using 3D printing technology are widely used in clinical practice to translate virtual planning to the operative field. Aim: The present in vitro study investigated the dimensional changes of 3D surgical guides printed in-house using Shining 3D surgical guide resin (SG01). Materials and methods: Five test bodies, varying in shape and dimensions, were designed using computer-aided design (CAD) software and manufactured using three different Light Crystal Display (LCD) 3D printers (AccuFab-L4D, Elegoo Mars Pro 3, and Zortrax Inspire). Specific printing and post-processing parameters for the SG01 resin were set to produce 25 test bodies (5 of each shape) from each of the three printers, resulting in a total of 75 samples. The dimensional changes were evaluated using a digital calliper at four different time points: immediately after printing (T0), one month after storage (T1), immediately after sterilization (T2), and one month after sterilization (T3). Results: All the test bodies showed deviations from the overall CAD reference value of 12.25 mm after printing and post-processing (T0) and following steam sterilization (T2). Similar trends were observed for the effect of storage times at T1 and T3. The AccuFab prints demonstrated a better dimensional stability than the Elegoo and Zortrax samples. Conclusions: The LCD 3D printers, sterilization, and storage times influenced the dimensional stability of the test bodies made with SGO1 resin.
Details
Tomography;
Accuracy;
Photopolymers;
Transplants & implants;
Medical technology;
Surgical instruments;
Resins;
Surgical equipment;
3-D printers;
Dimensional changes;
Medical equipment;
Computer aided testing;
Displays;
Computer aided design--CAD;
Three dimensional printing;
Manufacturing;
Dimensional stability;
Process parameters;
Statistical analysis
; Franchina, Alessio 2
; De Angelis, Francesca 1
; Bossù, Maurizio 1 ; Salucci, Alessandro 1 ; Brauner, Edoardo 1
; Cristalli, Maria Paola 1
; Gerardo La Monaca 1
1 Department of Oral and Maxillo-Facial Sciences, Sapienza, University of Rome, 6 Caserta Street, 00161 Rome, Italy;
2 Indipendent Researcher, 44 Legione Gallieno Street, 36100 Vicenza, Italy