A Comparative Study of Shock Absorption Capacities of Custom Fabricated Mouthguards Using a Triangulation Sensor

Sarac, Rūta; Helbig, Julia; Dräger, Juliane; Jost‐Brinkmann, Paul‐Georg

doi:10.3390/ma12213535

Cited by 7 publications

(16 citation statements)

References 32 publications

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“…It was concluded that thickness increase by insertion of additional layers results in protective properties of the construction. Sarac et al [24] obtained similar results.…”

Section: Limitation Statementmentioning

confidence: 58%

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Modeling the Contact Interaction of a Pair of Antagonist Teeth through Individual Protective Mouthguards of Different Geometric Configuration

2021

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This study carried out modeling of the contact between a pair of antagonist teeth with/without individual mouthguards with different geometric configurations. Comparisons of the stress–strain state of teeth interacting through a multilayer mouthguard EVA and multilayer mouthguards with an A-silicon interlayer were performed. The influence of the intermediate layer geometry of A-silicone in a multilayer mouthguard with an A-silicon interlayer on the stress–strain state of the human dentition was considered. The teeth geometry was obtained by computed tomography data and patient dental impressions. The contact 2D problem had a constant thickness, frictional contact deformation, and large deformations in the mouthguard. The strain–stress analysis of the biomechanical model was performed by elastoplastic stress–strain theory. Four geometric configurations of the mouthguard were considered within a wide range of functional loads varied from 50 to 300 N. The stress–strain distributions in a teeth pair during contact interaction at different levels of the physiological loads were obtained. The dependences of the maximum level of stress intensity and the plastic deformation intensity were established, and the contact parameters near the occlusion zone were considered. It was found that when using a multilayer mouthguard with an A-silicone interlayer, there is a significant decrease in the stress intensity level in the hard tissues of the teeth, more than eight and four times for the teeth of the upper and lower teeth, respectively.

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“…It was concluded that thickness increase by insertion of additional layers results in protective properties of the construction. Sarac et al [24] obtained similar results.…”

Section: Limitation Statementmentioning

confidence: 58%

“…Mouthguard thickness has a significant impact on the patient’s comfort. Recent studies considered an influence of the mouthguard’s thickness on its performance [ 22 , 23 , 24 ]. Westerman et al [ 22 ] revealed that the rational thickness for an EVA mouthguard is 4 mm.…”

Section: Discussionmentioning

confidence: 99%

Modeling the Contact Interaction of a Pair of Antagonist Teeth through Individual Protective Mouthguards of Different Geometric Configuration

2021

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“…Additive manufacturing of a biocompatible silicone in 20A, 40A and 60A Shore hardness has been reported recently [ 19 ]. However, higher Shore A values starting from 85A are required for a sufficient shock absorbance [ 12 ].…”

Section: Discussionmentioning

confidence: 99%

“…An average thickness of 4 mm is considered to be optimal for a MG to withstand the expected traumatic impact while not interfering with the wearer’s comfort [ 7 , 8 , 9 , 10 ]. The thickness of 4 mm was tested in material combinations and proved to have a better shock absorbance than multilayer designed MGs [ 3 , 11 , 12 ]. Today, such multilayer custom MGs are manufactured using an analog method.…”

Section: Introductionmentioning

confidence: 99%

Multi-Material 3D Printing of a Customized Sports Mouth Guard: Proof-of-Concept Clinical Case

Unkovskiy

Huettig²,

Kraemer-Fernandez³

et al. 2021

IJERPH

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A multilayer mouth guard is known to have the best protective performance. However, its manufacturing in a digital workflow may be challenging with regards to virtual design and materialization. The present case demonstrates a pathway to fabricate a multilayer individualized mouth guard in a fully digital workflow, which starts with intraoral scanning. A free-form CAD software was used for the virtual design. Two various CAM techniques were used, including Polyjet 3D printing of rubber-like soft material and silicone printing using Drop-on-Demand technique. For both methods the outer layer was manufactured from more rigid materials to facilitate its protective function; the inner layer was printed from a softer material to aid a better adaptation to mucosa and teeth. Both 3D printed multilayer mouth guards showed a clinically acceptable fit and were met with patient appraisal. Their protective capacities must be evaluated in further clinical studies.

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“…The PETG is a thermoplastic commonly used in odontology in the technique of vacuum thermoforming for the production of protective devices [21,22] and orthodontic devices [23,24], being biocompatible, resistant, easy to finish, low cost and with a simpler technique application when compared to PMMA. Despite clinical reports of the use of PET as intraoral radiotherapy positioners, no study was found regarding the use of PETG through a dosimetry evaluation.…”

Section: Introductionmentioning

confidence: 99%

Avaliação do PETG como material para imobilizadores utilizados em radioterapia para cabeça e pescoço

et al. 2020

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No planejamento do tratamento radioterápico do câncer de cabeça e pescoço, o radioncologista pode indicar o uso de uma prótese intraoral para facilitar a técnica de radioterapia e reduzir a toxicidade do tratamento. Esses dispositivos são comumente fabricados com resina acrílica odontológica , o polimetilmetacrilato (PMMA), mas há relatos de fabricação em materiais termoplásticos. O polietileno tereftalato de glicol (PETG) é um composto utilizado na fabricação de aparelhos dentários, que pode ser utilizado na fabricação de próteses intraorais. Objetivo: Avaliar o potencial uso de PETG na prótese intraoral para radioterapia do câncer de cabeça e pescoço. Materiais e métodos: Utilizaram-se formas circulares de PMMA e PETG de espessuras de 1, 2 e 3 mm com as dimensões de um fantasma de cabeça, o que permitiu a inserção de um filme radiocrômico. As irradiações ocorreram em um acelerador linear com fótons de energia de 6 MeV. Resultados: As diferenças percentuais da dose de profundidade dos materiais PMMA e PETG foram de 3%, 8% e 4%, respectivamente para as espessuras de 1, 2 e 3 mm, em torno da posição das formas circulares. Conclusão: Com base nos resultados obtidos, pode-se inferir que o PETG é adequado para a fabricação de prótese intraoral para tratamento radioterápico, substituindo os materiais existentes.

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A Comparative Study of Shock Absorption Capacities of Custom Fabricated Mouthguards Using a Triangulation Sensor

Cited by 7 publications

References 32 publications

Modeling the Contact Interaction of a Pair of Antagonist Teeth through Individual Protective Mouthguards of Different Geometric Configuration

Modeling the Contact Interaction of a Pair of Antagonist Teeth through Individual Protective Mouthguards of Different Geometric Configuration

Multi-Material 3D Printing of a Customized Sports Mouth Guard: Proof-of-Concept Clinical Case

Avaliação do PETG como material para imobilizadores utilizados em radioterapia para cabeça e pescoço

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