Comparison of fracture resistance of endodontically treated teeth using different coronal restorative materials: An in vitro study

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

Aim/Objective:

To evaluate the in vitro effect of bonded restorations on the fracture resistance of root canal-treated teeth.

Materials and Methods:

One hundred twenty extracted, maxillary, permanent premolars were collected. After preparing the access cavity, the teeth were biomechanically prepared and obturated. Samples were divided into six groups based on the type of restorative material used to restore them. Teeth were embedded in acrylic resin and their fracture strength was measured using a Universal Testing Machine. Data were evaluated statistically using one-way ANOVA-F and unpaired t-test.

Results:

Teeth restored with bonded amalgam and composite resin showed higher fracture resistance than those restored with conventional amalgam. Fracture strengths of bonded restorations and intact teeth were not statistically different. The results suggested that the group restored with conventional amalgam had the lowest fracture resistance. No statistically significant differences were found between the bonded amalgam and composite resin groups.

Conclusion:

Conventional amalgam core showed the least fracture resistance whereas; composite resin and bonded amalgam core showed fracture resistance was similar to that of natural tooth.

Related collections

Most cited references 24

Record: found
Abstract: found
Article: not found

Three-year clinical comparison of survival of endodontically treated teeth restored with either full cast coverage or with direct composite restoration.

Martyn Sherriff, M. Watson, W. Ford … (2002)

Little information exists regarding the outcome of crown build-ups on endodontically treated teeth restored with metal-ceramic crowns or with only a direct-placed composite. The aim of this study was to evaluate the clinical success rate of endodontically treated premolars restored with fiber posts and direct composite restorations and compare that treatment with a similar treatment of full-coverage with metal-ceramic crowns. Subjects included in this study had one maxillary or mandibular premolar for which endodontic treatment and crown build up was indicated and met specific inclusion/exclusion criteria. Only premolars with Class II carious lesions and preserved cusp structure were included. Subjects were randomly assigned to 1 of the following 2 experimental groups: (1) teeth endodontically treated and restored with adhesive techniques and composite or (2) teeth endodontically treated, restored with adhesive techniques and composite, and then restored with full-coverage metal-ceramic crowns. Sixty teeth were included in the first group and 57 in the second. All restorations were performed by one operator. Causes of failure were categorized as root fracture, post fracture, post decementation, clinical and/or radiographic evidence of marginal gap between tooth and restoration, and clinical and/or radiographic evidence of secondary caries contiguous with restoration margins. Subjects were examined for the listed clinical and radiographic causes of failure by 2 calibrated examiners at intervals of 1, 2, and 3 years. Exact 95% confidence intervals for the difference between the 2 experimental groups were calculated. At the 1-year recall, no failures were reported. The only failure modes observed at 2 and 3 years were decementations of posts and clinical and/or radiographic evidence of marginal gap between tooth and restoration. There was no difference in the failure frequencies of the 2 groups (95% confidence interval, -17.5 to 12.6). There was no difference between the number of failures caused by post decementations and the presence of marginal gaps observed in the 2 groups (95% confidence intervals, -9.7 to 16.2 and -17.8 to 9.27). Within the limitations of this study, the results upheld the research hypothesis that the clinical success rates of endodontically treated premolars restored with fiber posts and direct composite restorations after 3 years of service were equivalent to a similar treatment of full coverage with metal-ceramic crowns.

0 comments Cited 38 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Reinforcement effect of polyethylene fibre in root-filled teeth: comparison of two restoration techniques.

C Yildirim-Toruner, S Belli, A Erdemir (2006)

To compare in vitro two different fibre placement techniques on reinforcement of root-filled molar teeth with mesio-occluso-distal (MOD) cavities. Fifty sound extracted human mandibular molars were used (n = 10). Group 1 served as control. From group 2-5, endodontic access and standard MOD cavities were prepared. Following root canal treatment, group 2 was kept unrestored. In groups 3 and 4, the teeth were restored with composite resin (AP-X; Kuraray, Japan). A groove was prepared on occlusal surface of the finished restorations in group 4 from buccal to lingual direction. Polyethylene woven fibre (Ribbond; Seattle, WA, USA) was inserted in the groove in combination with flowable resin that was cured for 20 s and covered with composite resin. Cavity surfaces were covered with flowable resin in group 5, and polyethylene fibre was placed into the bed of resin in a buccal to lingual direction before the composite restoration was placed. All specimens were stored in 100% humidity at 37 degrees C for 24 h. Compressive loading of the teeth was performed by a universal testing machine at a crosshead speed of 0.5 mm min(-1) until failure. The data were recorded in Newton and submitted to anova and Tukey post hoc test. The mean load necessary to fracture the samples in each group was: G1: 1671.57 +/- 131.54(a); G2: 375.21 +/- 34.30(b); G3: 749.47 +/- 124.54(c); G4: 1224.36 +/- 132.17(d); G5: 926.88 +/- 118.28(e). Different superscript letters demonstrate significant difference between groups. Polyethylene fibre use over or under MOD composite restorations significantly increased fracture strength. However, when the fibre was placed on the occlusal surface of the restoration in buccal to lingual direction, significantly higher fracture resistance was observed.

0 comments Cited 30 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Dentin: microstructure and characterization.

John Marshall (1993)

Dentin consists of several identifiable structures: tubules with cell processes and fluid; highly mineralized peritubular dentin; and intertubular dentin consisting mainly of collagen and deposited apatite. The structural organization and microstructural variations reflect formative influences, such as tooth size and shape, and alterations caused by age, insult, and disease. However, details of structure-chemistry-property relationships for this anisotropic biologic composite are limited. Materials scientists are focusing on an array of new spectroscopic, analytical, and imaging techniques that are yielding improved understanding of structural variations and their dependence on specimen preparation, tooth type, location, storage conditions, and chemical and physical modifications. Such studies should lead to the major refinements in structure-properties models for dentin that are required for continued advances in dental composite resins and adhesives.

0 comments Cited 28 times – based on 0 reviews      Review now

Bookmark

All references

Author and article information

Journal

Journal ID (nlm-ta): J Conserv Dent

Journal ID (publisher-id): JCD

Title: Journal of Conservative Dentistry : JCD

Publisher: Medknow Publications (India )

ISSN (Print): 0972-0707

ISSN (Electronic): 0974-5203

Publication date (Print): Oct-Dec 2009

Volume: 12

Issue: 4

Pages: 154-159

Affiliations

Departments of Conservative Dentistry and Endodontics, D.J. College of Dental Sciences and Research, Modinagar, U.P, India

Author notes

Address for correspondence: Dr. Vivek Sharma, Departments of Conservative Dentistry and Endodontics, D.J. College of Dental Sciences and Research, Modinagar, U.P., India. E-mail: doc_vivek@ 123456yahoo.com

Article

Publisher ID: JCD-12-154

DOI: 10.4103/0972-0707.58338

PMC ID: 2879728

PubMed ID: 20543925

SO-VID: 61a5229d-967f-411b-ac5f-eb0b5e9ddff4

License:

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

History

Date received : 04 February 2009

Date revision received : 20 February 2009

Date accepted : 01 March 2009

Comments

Comment on this article

scite_

Cited by 24

See all cited by

Most referenced authors 156

See all reference authors

Comparison of fracture resistance of endodontically treated teeth using different coronal restorative materials: An in vitro study

Read this article at

Abstract

Aim/Objective:

Materials and Methods:

Results:

Conclusion:

Related collections

Arab Journal of Forensic Sciences & Forensic Medicine (AJFSFM)

Most cited references 24

Three-year clinical comparison of survival of endodontically treated teeth restored with either full cast coverage or with direct composite restoration.

Reinforcement effect of polyethylene fibre in root-filled teeth: comparison of two restoration techniques.

Dentin: microstructure and characterization.

Author and article information

Journal

Affiliations

Author notes

Article

History

Categories

Comments

Comment on this article

Similar content 279

Cited by 24

Most referenced authors 156