Cargando…
Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments
BACKGROUND/PURPOSE: The restoration of endodontically treated teeth (ETT) with cervical defects has been a challenge for dentists. The purpose of this study was to evaluate the effect of restorative treatment on the fracture resistance of ETT with cervical defects. MATERIALS AND METHODS: One hundred...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Association for Dental Sciences of the Republic of China
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9201527/ https://www.ncbi.nlm.nih.gov/pubmed/35756765 http://dx.doi.org/10.1016/j.jds.2021.09.017 |
_version_ | 1784728342923051008 |
---|---|
author | Guo, Yi-Bai Bai, Wei Liang, Yu-Hong |
author_facet | Guo, Yi-Bai Bai, Wei Liang, Yu-Hong |
author_sort | Guo, Yi-Bai |
collection | PubMed |
description | BACKGROUND/PURPOSE: The restoration of endodontically treated teeth (ETT) with cervical defects has been a challenge for dentists. The purpose of this study was to evaluate the effect of restorative treatment on the fracture resistance of ETT with cervical defects. MATERIALS AND METHODS: One hundred and twenty freshly extracted human intact straight-single-root maxillary premolars were randomly divided into 6 groups. Group 1 remained untreated. Cervical defects of 4 mm-depth and 3 mm-height were created in groups 2–6. Group 3–6: root canal treatment. Group 4: direct composite resin restoration. Group 5: 2-mm full-cusp-coverage composite resin restoration. Group 6: fiber-post-supported composite resin restoration. A static fracture test was used to determine the fracture resistance of teeth under axial (n = 10) and palatal (30°) (n = 10) loading. Fracture modes were categorized as restorable and unrestorable. RESULTS: Compared with intact teeth, the axial fracture resistance of teeth with cervical defects decreased by approximately 39%, and endodontic procedures resulted in 10% more reduction. When ETT with cervical defects were restored using direct composite resin filling, the axial fracture resistance recovered to 72% of that of intact teeth, but no significant change occurred under oblique loading. After full-cusp-coverage or fiber-post-supported restoration, fracture resistance showed complete recovery to the value of intact teeth (P > 0.05). Sixty percent of fractures were unrestorable for fiber-post-supported teeth, while in the full-cusp-coverage restoration group, 80–90% of fractures were restorable. CONCLUSION: Full-cusp-coverage restoration or fiber-post-supported restoration could improve the fracture resistance of ETT with cervical defects, whereas unrestorable fractures easily occurred in fiber-post-supported restorations. |
format | Online Article Text |
id | pubmed-9201527 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Association for Dental Sciences of the Republic of China |
record_format | MEDLINE/PubMed |
spelling | pubmed-92015272022-06-24 Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments Guo, Yi-Bai Bai, Wei Liang, Yu-Hong J Dent Sci Original Article BACKGROUND/PURPOSE: The restoration of endodontically treated teeth (ETT) with cervical defects has been a challenge for dentists. The purpose of this study was to evaluate the effect of restorative treatment on the fracture resistance of ETT with cervical defects. MATERIALS AND METHODS: One hundred and twenty freshly extracted human intact straight-single-root maxillary premolars were randomly divided into 6 groups. Group 1 remained untreated. Cervical defects of 4 mm-depth and 3 mm-height were created in groups 2–6. Group 3–6: root canal treatment. Group 4: direct composite resin restoration. Group 5: 2-mm full-cusp-coverage composite resin restoration. Group 6: fiber-post-supported composite resin restoration. A static fracture test was used to determine the fracture resistance of teeth under axial (n = 10) and palatal (30°) (n = 10) loading. Fracture modes were categorized as restorable and unrestorable. RESULTS: Compared with intact teeth, the axial fracture resistance of teeth with cervical defects decreased by approximately 39%, and endodontic procedures resulted in 10% more reduction. When ETT with cervical defects were restored using direct composite resin filling, the axial fracture resistance recovered to 72% of that of intact teeth, but no significant change occurred under oblique loading. After full-cusp-coverage or fiber-post-supported restoration, fracture resistance showed complete recovery to the value of intact teeth (P > 0.05). Sixty percent of fractures were unrestorable for fiber-post-supported teeth, while in the full-cusp-coverage restoration group, 80–90% of fractures were restorable. CONCLUSION: Full-cusp-coverage restoration or fiber-post-supported restoration could improve the fracture resistance of ETT with cervical defects, whereas unrestorable fractures easily occurred in fiber-post-supported restorations. Association for Dental Sciences of the Republic of China 2022-04 2021-10-08 /pmc/articles/PMC9201527/ /pubmed/35756765 http://dx.doi.org/10.1016/j.jds.2021.09.017 Text en © 2021 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Article Guo, Yi-Bai Bai, Wei Liang, Yu-Hong Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments |
title | Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments |
title_full | Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments |
title_fullStr | Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments |
title_full_unstemmed | Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments |
title_short | Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments |
title_sort | fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9201527/ https://www.ncbi.nlm.nih.gov/pubmed/35756765 http://dx.doi.org/10.1016/j.jds.2021.09.017 |
work_keys_str_mv | AT guoyibai fractureresistanceofendodonticallytreatedteethwithcervicaldefectsusingdifferentrestorativetreatments AT baiwei fractureresistanceofendodonticallytreatedteethwithcervicaldefectsusingdifferentrestorativetreatments AT liangyuhong fractureresistanceofendodonticallytreatedteethwithcervicaldefectsusingdifferentrestorativetreatments |