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CC BY 4.0 · European Journal of General Dentistry 2023; 12(02): 089-096
DOI: 10.1055/s-0043-57245
Original Article

Adaptation of Relined Fiber Post Using Discontinuous Short Fiber-Reinforced Resin Composite to Restore Weakened Endodontically-Treated Premolars

Dawood Salman Dawood Alshetiwi
1   Post-Graduate Program in Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, Malaysia
,
Nor Aidaniza Abdul Muttlib 
2   Prosthodontics Unit, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, Malaysia
,
Hatem M. El-Damanhoury 
3   Department of Preventive and Restorative Dentistry, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
8   Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
,
Rabihah Alawi 
4   Conservative Dentistry Unit, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, Malaysia
,
Normastura Abd Rahman 
5   Dental Public Health Unit, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, Malaysia
,
Nesrine Aly Elsahn
6   Department of Clinical Sciences, College of Dentistry, Ajman University, Ajman, United Arab Emirates
7   Department of Operative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
9   Center of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
› Author Affiliations Funding Submission of this manuscript is funded by Research University Grant, Universiti Sains Malaysia (1001/PPSG/8012367).
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Abstract

Objective This study aimed to investigate the effect of relining prefabricated fiber-reinforced composite (FRC) posts using bulk-fill, flowable, discontinuous short fiber-reinforced composite (SFRC) on intracanal adaptation in weakened endodontically-treated premolar teeth.

Materials and Methods Forty extracted human premolar teeth were selected and randomly allocated to five groups (n = 8) according to the canal preparation method and restorative technique after endodontic treatment: Group 1 (control): nonflared, closed apex root canals; group 2, 4: flared, open-apex root canals; group 3, 5: flared, closed apex root canals. Groups 1 to 3 were restored with standard RelyX fiber post size #1, while groups 4 and 5 were restored with customized RelyX fiber post size #1 and relined with bulk-fill flowable SFRC (everX Flow, GC, Tokyo, Japan). To evaluate intracanal adaptation, the empty root of each sample with the corresponding fiber post (standard or customized) inserted was measured twice using a micro-digital scale and the average value was calculated. The post was then removed, followed by the insertion of a light body polyvinyl siloxane (PVS) impression material into the canal, followed by reinsertion of the post and removal of excess material once the PVS was set. Finally, the sample weight was recorded, and the data were analyzed using one-way analysis of variance and the Bonferroni post hoc test (p-value = 0.05).

Results A statistically significant difference (p < 0.05) in PVS material weight was identified between the groups. Group 1 (control) had the lightest weight of PVS material, followed by groups restored with customized fiber posts (groups 4 and 5) and standard fiber posts (groups 2 and 3).

Conclusion Anatomically-customized fiber posts with bulk-fill flowable SFRC provided better intracanal adaptation compared with standard fiber posts in teeth with compromised root canals.

Keywords

adaptation - relined - fiber-reinforced composite - fiber post - flared - endodontically treated teeth - short fiber-reinforced composite

Clinical Significance

Increased resin cement thickness is correlated with higher incidence of defects formation. Optimum intracanal adaptation is necessary to result in a low resin cement thickness in compromised root canals. For FRC post system, relining with bulkfill flowable discontinuous SFRC achieves this objective and creates an anatomically customized post conforming to root canal taper. Additional benefits associated with the inherent properties, flowability of the relining SFRC material are also obtained making it an excellent option for this technique.




Publication History

Article published online:
21 April 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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