Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study
Abstract 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 wi...
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doaj-94715785ff9f47ffa35f240d0a1c845e2020-11-25T01:08:43ZengBMCBMC Oral Health1472-68312019-11-0119111010.1186/s12903-019-0958-3Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro studyBalázs Szabó0Sufyan Garoushi1Gábor Braunitzer2Balázs Szabó P.3Zoltán Baráth4Márk Fráter5Department of Periodontology Faculty of Dentistry, University of SzegedDepartment of Biomaterials Science and Turku Clinical Biomaterials Center –TCBC Institute of Dentistry, University of TurkudicomLAB Dental Ltd.Department of Food Engineering Faculty of Engineering, University of SzegedDepartment of Prosthodontics Faculty of Dentistry, University of SzegedDepartment of Operative and Esthetic Dentistry Faculty of Dentistry, University of SzegedAbstract 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.http://link.springer.com/article/10.1186/s12903-019-0958-3FurcationFracture resistanceOverlayShort fibre-reinforced compositeBone support |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Balázs Szabó Sufyan Garoushi Gábor Braunitzer Balázs Szabó P. Zoltán Baráth Márk Fráter |
spellingShingle |
Balázs Szabó Sufyan Garoushi Gábor Braunitzer Balázs Szabó P. Zoltán Baráth Márk Fráter Fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study BMC Oral Health Furcation Fracture resistance Overlay Short fibre-reinforced composite Bone support |
author_facet |
Balázs Szabó Sufyan Garoushi Gábor Braunitzer Balázs Szabó P. Zoltán Baráth Márk Fráter |
author_sort |
Balázs Szabó |
title |
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_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_sort |
fracture behavior of root-amputated teeth at different amount of periodontal support – a preliminary in vitro study |
publisher |
BMC |
series |
BMC Oral Health |
issn |
1472-6831 |
publishDate |
2019-11-01 |
description |
Abstract 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. |
topic |
Furcation Fracture resistance Overlay Short fibre-reinforced composite Bone support |
url |
http://link.springer.com/article/10.1186/s12903-019-0958-3 |
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