Impact of scanning interruptions on accuracy of implant-supported full-arch scans: An in-vitro pilot study

doi:10.1016/j.jdent.2024.105503

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AutoresÁlvaro Limones, Gülce Çakmak, Manrique Fonseca, Andrea Roccuzzo, Carlos Cobo-Vázquez, Miguel Gómez‐Polo, Pedro Molinero‐Mourelle

Por qué importa

Un estudio in vitro ha evaluado cómo las interrupciones voluntarias e involuntarias durante el escaneo intraoral de arcadas completas soportadas por implantes afectan la precisión. Las interrupciones voluntarias, simuladas al presionar el botón de encendido del escáner, demostraron mejorar la exactitud y reducir el tiempo de escaneo y el número de fotogramas en comparación con el grupo control sin interrupciones. Por el contrario, las interrupciones involuntarias, generadas al sacar el escáner de su distancia focal, no mostraron un impacto significativo en la precisión. Estos hallazgos sugieren que el uso estratégico de pausas voluntarias podría optimizar la eficiencia y la fidelidad de los escaneos, lo cual es crucial para el ajuste y éxito de las prótesis sobre implantes en la práctica clínica.

Abstract original

PURPOSE: To assess the impact of involuntary interruptions (simulating tracking loss by moving the scanner out of its focal distance) and voluntary interruptions (pressing the scanner's turn-on button) on the accuracy of implant-supported full-arch scans using an intraoral scanner (TRIOS 5, version 22.1.10; 3Shape; Copenhagen, Denmark). MATERIALS AND METHODS: An edentulous model with four implants was digitized with an industrial scanner (Artec Micro II; Artec 3D) to create a reference scan. Four groups (n = 30) were established based on the number of interruptions during scanning: Zero Group (no interruptions; control group), 6-V Group (six voluntary interruptions), 6-I Group (six involuntary interruptions), and 12-I Group (twelve involuntary interruptions). Primary outcome was accuracy assessed by the Root Mean Square (RMS) method. Secondary outcomes included scanning time and the number of photograms. Data were analyzed using one-way ANOVA and post hoc Tukey multiple comparison tests (α=0.05). RESULTS: A total of 120 digital scans were conducted. The Zero group achieved a RMS error of 291 ± 47 µm, a scanning time of 68 ± 6s, and 1320 ± 129 photograms. 6-V group significantly reduced RMS error (MD -102 µm [IC 95 %: -141, -63]), decreased scanning time (MD -20s [IC 95 %: -25, -17]), and reduced photograms (MD -415 photograms [IC 95 %: -506, -324]) compared to the control group (P<.001). Simulations of 6 or 12 involuntary interruptions did not affect accuracy compared to the control group (P>.05). CONCLUSIONS: Voluntary interruptions during scanning, achieved by pressing the scanner's turn-on button, appear to enhance accuracy due to image preprocessing, while involuntary interruptions had no significant impact on the accuracy of implant-supported full-arch scans. CLINICAL SIGNIFICANCE: Voluntary stop during scanning implant-supported full-arches may result in better-fitting prostheses owing to higher scan accuracy and efficiency.

Leer texto completo ↗DOI · 10.1016/j.jdent.2024.105503

Autor Doctor&Cols

Carlos M. Cobo Vázquez
Cirugía Oral e Implantología

Cómo citar

Limones Á, Çakmak G, Fonseca M, Roccuzzo A, Cobo-Vázquez C, Gómez‐Polo M, et al. Impact of scanning interruptions on accuracy of implant-supported full-arch scans: An in-vitro pilot study. Journal of Dentistry. 2024. doi:10.1016/j.jdent.2024.105503