PSI - Issue 74

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2025) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2025) 000–000

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ScienceDirect

Procedia Structural Integrity 74 (2025) 33–37

© 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of Libor Pantělejev Abstract Silicone impression materials are widely used in orthodontic practice for dental impressions, but they can be used in different applications. One potential application is the use of protective obturators during anaesthesia prior to cleft palate surgery. These silicone materials come from various brands with different material properties, which can influence the final product. Thus, these different mechanical properties were examined experimentally. Tensile tests were performed on specimens prepared with the use of 3D printed moulds and their structure was investigated by micro-CT. 1. Introduction Approximately one in every 2500 newborns is affected by a craniofacial anomaly, specifically cleft lip, cleft palate, or cleft lip and palate (Salari et al. 2022). Surgical intervention is necessary to restore the continuity of the split tissues of the upper lip and/or palate. However, during the intubation procedure, soft tissues or the hard palate may be injured due to manipulation with the laryngoscopic blade. The use of a protective silicone obturator can improve tracheal intubation conditions and, most importantly, protect the patient’s oral tissues (Richtrova et al. 2023). As for the Eleventh International Conference on Materials Structure and Micromechanics of Fracture Experimental investigation of silicone impression materials Hrubanová A. a* , Thomková B. a , Borák L. a , Košková, O. b , Richtrová M. c , Marcián P. a a Brno University of Technology, Faculty of Mechanical Engineering, Department of Solid Mechanics, Mechatronics and Biomechanics, Technická 2896/2, Brno, 616 69, CZ b Masaryk University, Faculty of Medicine, Department of Burns and Plastic Surgery, Jihlavská 340/20, Brno, 625 00, CZ c Masaryk University, Faculty of Medicine, Department of Paediatric Anaesthesiology and Intensive Care Medicine, Masaryk University, Černopolní 212/9, Brno, 662 63, CZ Abstract Silicone impression materials are widely used in orthodontic practice for dental impressions, but they can be used in different applications. One potential application is the use of protective obturators during anaesthesia prior to cleft palate surgery. These silicone materials come from various brands with different material properties, which can influence the final product. Thus, these different mechanical properties were examined experimentally. Tensile tests were performed on specimens prepared with the use of 3D printed moulds and their structure was investigated by micro-CT. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of Libor Pant ě lejev Keywords: Silicone materials, tensile testing, micro-CT 1. Introduction Approximately one in every 2500 newborns is affected by a craniofacial anomaly, specifically cleft lip, cleft palate, or cleft lip and palate (Salari et al. 2022). Surgical intervention is necessary to restore the continuity of the split tissues of the upper lip and/or palate. However, during the intubation procedure, soft tissues or the hard palate may be injured due to manipulation with the laryngoscopic blade. The use of a protective silicone obturator can improve tracheal intubation conditions and, most importantly, protect the patient’s oral tissues (Richtrova et al. 2023). As for the Eleventh International Conference on Materials Structure and Micromechanics of Fracture Experimental investigation of silicone impression materials Hrubanová A. a* , Thomková B. a , Borák L. a , Košková, O. b , Richtrová M. c , Marcián P. a a Brno University of Technology, Faculty of Mechanical Engineering, Department of Solid Mechanics, Mechatronics and Biomechanics, Technická 2896/2, Brno, 616 69, CZ b Masaryk University, Faculty of Medicine, Department of Burns and Plastic Surgery, Jihlavská 340/20, Brno, 625 00, CZ c Masaryk University, Faculty of Medicine, Department of Paediatric Anaesthesiology and Intensive Care Medicine, Masaryk University, Černopolní 212/9, Brno, 662 63, CZ Peer-review under the responsibility of Libor Pant ě lejev Keywords: Silicone materials, tensile testing, micro-CT

* Corresponding author. Tel.: +420606269960; E-mail address: Anna.Hrubanova@vutbr.cz * Corresponding author. Tel.: +420606269960; E-mail address: Anna.Hrubanova@vutbr.cz

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of Libor Pant ě lejev 2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of Libor Pant ě lejev

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of Libor Pantělejev 10.1016/j.prostr.2025.10.030