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Effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis

BACKGROUND: Partial restoration combined with periodontal root coverage surgery can be applied to the treatment of non-carious cervical lesions (NCCLs) accompanied with gingival recessions in clinical practice. However, the feasibility of NCCL partial restorative treatment from a biomechanical persp...

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Autores principales: Luo, Xin, Rong, Qiguo, Luan, Qingxian, Yu, Xiaoqian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9753429/
https://www.ncbi.nlm.nih.gov/pubmed/36522633
http://dx.doi.org/10.1186/s12903-022-02647-8
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author Luo, Xin
Rong, Qiguo
Luan, Qingxian
Yu, Xiaoqian
author_facet Luo, Xin
Rong, Qiguo
Luan, Qingxian
Yu, Xiaoqian
author_sort Luo, Xin
collection PubMed
description BACKGROUND: Partial restoration combined with periodontal root coverage surgery can be applied to the treatment of non-carious cervical lesions (NCCLs) accompanied with gingival recessions in clinical practice. However, the feasibility of NCCL partial restorative treatment from a biomechanical perspective remains unclear. This study aimed to investigate the effect of partial restorations on stress distributions in the NCCLs of mandibular first premolars via three-dimensional finite element analysis. METHODS: Three-dimensional finite element models of buccal wedge-shaped NCCLs in various locations of a defected zenith (0 mm, 1 mm, and 2 mm) were constructed and divided into three groups (A, B, and C). Three partially restored NCCL models with different locations of the lower restoration border (1 mm, 1.5 mm, and 2 mm), and one completely restored NCCL model were further constructed for each group. The following restorative materials were used in all restoration models: composite resin (CR), glass-ionomer cement (GIC), and mineral trioxide aggregate (MTA). The first principal stress distributions under buccal oblique loads of 100 N were analyzed. Restoration bond failures were also evaluated based on stress distributions at dentin-restoration interfaces. RESULTS: When the partial restoration fully covered the defected zenith, the first principal stress around the zenith decreased and the maximum tensile stress was concentrated at the lower restoration border. When the partial restoration did not cover the defected zenith, the first principal stress distribution patterns were similar to those in unrestored models, with the maximum tensile stress remaining concentrated at the zenith. As the elastic modulus of the restorative material was altered, the stress distributions at the interface were not obviously changed. Restoration bond failures were not observed in CR, but occurred in GIC and MTA in most models. CONCLUSIONS: Partial restorations that fully covered defected zeniths improved the stress distributions in NCCLs, while the stress distributions were unchanged or worsened under other circumstances. CR was the optimal material for partial restorations compared to GIC and MTA.
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spelling pubmed-97534292022-12-16 Effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis Luo, Xin Rong, Qiguo Luan, Qingxian Yu, Xiaoqian BMC Oral Health Research BACKGROUND: Partial restoration combined with periodontal root coverage surgery can be applied to the treatment of non-carious cervical lesions (NCCLs) accompanied with gingival recessions in clinical practice. However, the feasibility of NCCL partial restorative treatment from a biomechanical perspective remains unclear. This study aimed to investigate the effect of partial restorations on stress distributions in the NCCLs of mandibular first premolars via three-dimensional finite element analysis. METHODS: Three-dimensional finite element models of buccal wedge-shaped NCCLs in various locations of a defected zenith (0 mm, 1 mm, and 2 mm) were constructed and divided into three groups (A, B, and C). Three partially restored NCCL models with different locations of the lower restoration border (1 mm, 1.5 mm, and 2 mm), and one completely restored NCCL model were further constructed for each group. The following restorative materials were used in all restoration models: composite resin (CR), glass-ionomer cement (GIC), and mineral trioxide aggregate (MTA). The first principal stress distributions under buccal oblique loads of 100 N were analyzed. Restoration bond failures were also evaluated based on stress distributions at dentin-restoration interfaces. RESULTS: When the partial restoration fully covered the defected zenith, the first principal stress around the zenith decreased and the maximum tensile stress was concentrated at the lower restoration border. When the partial restoration did not cover the defected zenith, the first principal stress distribution patterns were similar to those in unrestored models, with the maximum tensile stress remaining concentrated at the zenith. As the elastic modulus of the restorative material was altered, the stress distributions at the interface were not obviously changed. Restoration bond failures were not observed in CR, but occurred in GIC and MTA in most models. CONCLUSIONS: Partial restorations that fully covered defected zeniths improved the stress distributions in NCCLs, while the stress distributions were unchanged or worsened under other circumstances. CR was the optimal material for partial restorations compared to GIC and MTA. BioMed Central 2022-12-15 /pmc/articles/PMC9753429/ /pubmed/36522633 http://dx.doi.org/10.1186/s12903-022-02647-8 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
Luo, Xin
Rong, Qiguo
Luan, Qingxian
Yu, Xiaoqian
Effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis
title Effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis
title_full Effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis
title_fullStr Effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis
title_full_unstemmed Effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis
title_short Effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis
title_sort effect of partial restorative treatment on stress distributions in non-carious cervical lesions: a three-dimensional finite element analysis
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9753429/
https://www.ncbi.nlm.nih.gov/pubmed/36522633
http://dx.doi.org/10.1186/s12903-022-02647-8
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