Cargando…
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...
Autores principales: | , , , , , |
---|---|
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 |
_version_ | 1783474093335511040 |
---|---|
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. |
format | Online Article Text |
id | pubmed-6882155 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT szabobalazs fracturebehaviorofrootamputatedteethatdifferentamountofperiodontalsupportapreliminaryinvitrostudy AT garoushisufyan fracturebehaviorofrootamputatedteethatdifferentamountofperiodontalsupportapreliminaryinvitrostudy AT braunitzergabor fracturebehaviorofrootamputatedteethatdifferentamountofperiodontalsupportapreliminaryinvitrostudy AT szabopbalazs fracturebehaviorofrootamputatedteethatdifferentamountofperiodontalsupportapreliminaryinvitrostudy AT barathzoltan fracturebehaviorofrootamputatedteethatdifferentamountofperiodontalsupportapreliminaryinvitrostudy AT fratermark fracturebehaviorofrootamputatedteethatdifferentamountofperiodontalsupportapreliminaryinvitrostudy |