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Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study

BACKGROUND: The purpose of this study was to evaluate the effect of the amount of periodontal support on the fracture resistance of root-amputated maxillary molar teeth restored with either direct class. I. restorations or class II. mesio-occluso-distal (MOD) indirect overlay restorations with cuspa...

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Autores principales: Szabó, Balázs, Garoushi, Sufyan, Braunitzer, Gábor, Szabó P., Balázs, Baráth, Zoltán, Fráter, Márk
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6882155/
https://www.ncbi.nlm.nih.gov/pubmed/31775721
http://dx.doi.org/10.1186/s12903-019-0958-3
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author Szabó, Balázs
Garoushi, Sufyan
Braunitzer, Gábor
Szabó P., Balázs
Baráth, Zoltán
Fráter, Márk
author_facet Szabó, Balázs
Garoushi, Sufyan
Braunitzer, Gábor
Szabó P., Balázs
Baráth, Zoltán
Fráter, Márk
author_sort Szabó, Balázs
collection PubMed
description BACKGROUND: The purpose of this study was to evaluate the effect of the amount of periodontal support on the fracture resistance of root-amputated maxillary molar teeth restored with either direct class. I. restorations or class II. mesio-occluso-distal (MOD) indirect overlay restorations with cuspal coverage. METHODS: Sixty sound maxillary first molars were collected and randomly divided into four groups. In Groups 1 and 2, MOD cavities were prepared and all cusps were reduced by 2 mm, whereas in Group 3 and 4, only a conservative Class I. cavity was prepared. Subsequently, root canal treatment was performed and the mesio-buccal roots were amputated. Groups 1 and 2 were restored with indirect composite overlay, while Groups 3 and 4 received direct composite fillings. After restoration, teeth were embedded as follows: Groups 1 and 3: normal bone level, Groups 2 and 4: furcation involvement. The specimens were submitted to static fracture resistance testing. Fracture thresholds and fracture patterns were measured and evaluated. RESULTS: Group 1 had the highest fracture resistance (2311,6 N) among the restored groups and showed statistically significant difference compared to Group 2 (p = 0.038) and Group 4 (p = 0.011). There was no statistically significant difference in terms of fracture resistance between the rest of the groups. In terms of the fracture patterns, Group 3 was characterized by the highest percentage (60%) of mostly favorable fractures, while the rest of the groups showed predominantly unfavorable ones. CONCLUSIONS: The amount of periodontal support seems to influence the fracture resistance of root-amputated and restored maxillary molars.
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spelling pubmed-68821552019-12-03 Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study Szabó, Balázs Garoushi, Sufyan Braunitzer, Gábor Szabó P., Balázs Baráth, Zoltán Fráter, Márk BMC Oral Health Research Article BACKGROUND: The purpose of this study was to evaluate the effect of the amount of periodontal support on the fracture resistance of root-amputated maxillary molar teeth restored with either direct class. I. restorations or class II. mesio-occluso-distal (MOD) indirect overlay restorations with cuspal coverage. METHODS: Sixty sound maxillary first molars were collected and randomly divided into four groups. In Groups 1 and 2, MOD cavities were prepared and all cusps were reduced by 2 mm, whereas in Group 3 and 4, only a conservative Class I. cavity was prepared. Subsequently, root canal treatment was performed and the mesio-buccal roots were amputated. Groups 1 and 2 were restored with indirect composite overlay, while Groups 3 and 4 received direct composite fillings. After restoration, teeth were embedded as follows: Groups 1 and 3: normal bone level, Groups 2 and 4: furcation involvement. The specimens were submitted to static fracture resistance testing. Fracture thresholds and fracture patterns were measured and evaluated. RESULTS: Group 1 had the highest fracture resistance (2311,6 N) among the restored groups and showed statistically significant difference compared to Group 2 (p = 0.038) and Group 4 (p = 0.011). There was no statistically significant difference in terms of fracture resistance between the rest of the groups. In terms of the fracture patterns, Group 3 was characterized by the highest percentage (60%) of mostly favorable fractures, while the rest of the groups showed predominantly unfavorable ones. CONCLUSIONS: The amount of periodontal support seems to influence the fracture resistance of root-amputated and restored maxillary molars. BioMed Central 2019-11-27 /pmc/articles/PMC6882155/ /pubmed/31775721 http://dx.doi.org/10.1186/s12903-019-0958-3 Text en © The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Szabó, Balázs
Garoushi, Sufyan
Braunitzer, Gábor
Szabó P., Balázs
Baráth, Zoltán
Fráter, Márk
Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study
title Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study
title_full Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study
title_fullStr Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study
title_full_unstemmed Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study
title_short Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study
title_sort fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6882155/
https://www.ncbi.nlm.nih.gov/pubmed/31775721
http://dx.doi.org/10.1186/s12903-019-0958-3
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