In-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years

Abstract The aim of this study was to quantify and to compare the wear rates of premolar (PM) and molar (M) restorations of lithium disilicate ceramic (LS2) and an experimental CAD/CAM polymer (COMP) in cases of complex rehabilitations with changes in vertical dimension of occlusion (VDO). Twelve pa...

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Autores principales:	Gintare Burian, Kurt Erdelt, Josef Schweiger, Christine Keul, Daniel Edelhoff, Jan-Frederik Güth
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/07702037d2c9477ea5605da661e5cf7f
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spelling	oai:doaj.org-article:07702037d2c9477ea5605da661e5cf7f2021-12-02T18:34:13ZIn-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years10.1038/s41598-021-93425-z2045-2322https://doaj.org/article/07702037d2c9477ea5605da661e5cf7f2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93425-zhttps://doaj.org/toc/2045-2322Abstract The aim of this study was to quantify and to compare the wear rates of premolar (PM) and molar (M) restorations of lithium disilicate ceramic (LS2) and an experimental CAD/CAM polymer (COMP) in cases of complex rehabilitations with changes in vertical dimension of occlusion (VDO). Twelve patients with severe tooth wear underwent prosthetic rehabilitation, restoring the VDO with antagonistic occlusal coverage restorations either out of LS2 (n = 6 patients, n = 16 posterior restorations/patient; N = 96 restorations/year) or COMP (n = 6 patients; n = 16 posterior restorations/patient; N = 96 restorations/year). Data was obtained by digitalization of plaster casts with a laboratory scanner at annual recalls (350 ± 86 days; 755 ± 92 days; 1102 ± 97 days). Each annual recall dataset of premolar and molar restorations (N = 192) was overlaid individually with the corresponding baseline dataset using an iterative best-fit method. Mean vertical loss of the occlusal contact areas (OCAs) was calculated for each restoration and recall time. For LS2 restorations, the mean wear rate per month over 1 year was 7.5 ± 3.4 μm (PM), 7.8 ± 2.0 μm (M), over 2 years 3.8 ± 1.6 µm (PM), 4.4 ± 1.5 µm (M), over 3 years 2.8 ± 1.3 µm (PM), 3.4 ± 1.7 µm (M). For COMP restorations, the mean wear rate per month over 1 year was 15.5 ± 8.9 μm (PM), 28.5 ± 20.2 μm (M), over 2 years 9.2 ± 5.9 µm (PM), 16.7 ± 14.9 µm (M), over 3 years 8.6 ± 5.3 µm (PM), 9.5 ± 8.0 µm (M). Three COMP restorations fractured after two years and therefore were not considered in the 3-year results. The wear rates in the LS2 group showed significant differences between premolars and molars restorations (p = 0.041; p = 0.023; p = 0.045). The wear rates in COMP group differed significantly between premolars and molars only in the first two years (p < 0.0001; p = 0.007). COMP restorations show much higher wear rates compared to LS2. The presented results suggest that with increasing time in situ, the monthly wear rates for both materials decreased over time. On the basis of this limited dataset, both LS2 and COMP restorations show reasonable clinical wear rates after 3 years follow-up. Wear of COMP restorations was higher, however prosthodontic treatment was less invasive. LS2 showed less wear, yet tooth preparation was necessary. Clinicians should balance well between necessary preparation invasiveness and long-term occlusal stability in patients with worn dentitions.Gintare BurianKurt ErdeltJosef SchweigerChristine KeulDaniel EdelhoffJan-Frederik GüthNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Gintare Burian Kurt Erdelt Josef Schweiger Christine Keul Daniel Edelhoff Jan-Frederik Güth In-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years
description	Abstract The aim of this study was to quantify and to compare the wear rates of premolar (PM) and molar (M) restorations of lithium disilicate ceramic (LS2) and an experimental CAD/CAM polymer (COMP) in cases of complex rehabilitations with changes in vertical dimension of occlusion (VDO). Twelve patients with severe tooth wear underwent prosthetic rehabilitation, restoring the VDO with antagonistic occlusal coverage restorations either out of LS2 (n = 6 patients, n = 16 posterior restorations/patient; N = 96 restorations/year) or COMP (n = 6 patients; n = 16 posterior restorations/patient; N = 96 restorations/year). Data was obtained by digitalization of plaster casts with a laboratory scanner at annual recalls (350 ± 86 days; 755 ± 92 days; 1102 ± 97 days). Each annual recall dataset of premolar and molar restorations (N = 192) was overlaid individually with the corresponding baseline dataset using an iterative best-fit method. Mean vertical loss of the occlusal contact areas (OCAs) was calculated for each restoration and recall time. For LS2 restorations, the mean wear rate per month over 1 year was 7.5 ± 3.4 μm (PM), 7.8 ± 2.0 μm (M), over 2 years 3.8 ± 1.6 µm (PM), 4.4 ± 1.5 µm (M), over 3 years 2.8 ± 1.3 µm (PM), 3.4 ± 1.7 µm (M). For COMP restorations, the mean wear rate per month over 1 year was 15.5 ± 8.9 μm (PM), 28.5 ± 20.2 μm (M), over 2 years 9.2 ± 5.9 µm (PM), 16.7 ± 14.9 µm (M), over 3 years 8.6 ± 5.3 µm (PM), 9.5 ± 8.0 µm (M). Three COMP restorations fractured after two years and therefore were not considered in the 3-year results. The wear rates in the LS2 group showed significant differences between premolars and molars restorations (p = 0.041; p = 0.023; p = 0.045). The wear rates in COMP group differed significantly between premolars and molars only in the first two years (p < 0.0001; p = 0.007). COMP restorations show much higher wear rates compared to LS2. The presented results suggest that with increasing time in situ, the monthly wear rates for both materials decreased over time. On the basis of this limited dataset, both LS2 and COMP restorations show reasonable clinical wear rates after 3 years follow-up. Wear of COMP restorations was higher, however prosthodontic treatment was less invasive. LS2 showed less wear, yet tooth preparation was necessary. Clinicians should balance well between necessary preparation invasiveness and long-term occlusal stability in patients with worn dentitions.
format	article
author	Gintare Burian Kurt Erdelt Josef Schweiger Christine Keul Daniel Edelhoff Jan-Frederik Güth
author_facet	Gintare Burian Kurt Erdelt Josef Schweiger Christine Keul Daniel Edelhoff Jan-Frederik Güth
author_sort	Gintare Burian
title	In-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years
title_short	In-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years
title_full	In-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years
title_fullStr	In-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years
title_full_unstemmed	In-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years
title_sort	in-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/07702037d2c9477ea5605da661e5cf7f
work_keys_str_mv	AT gintareburian invivowearincompositeandceramicfullmouthrehabilitationsover3years AT kurterdelt invivowearincompositeandceramicfullmouthrehabilitationsover3years AT josefschweiger invivowearincompositeandceramicfullmouthrehabilitationsover3years AT christinekeul invivowearincompositeandceramicfullmouthrehabilitationsover3years AT danieledelhoff invivowearincompositeandceramicfullmouthrehabilitationsover3years AT janfrederikguth invivowearincompositeandceramicfullmouthrehabilitationsover3years
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In-vivo-wear in composite and ceramic full mouth rehabilitations over 3 years

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