Clinical Performance of Short-Fiber Reinforced Composite in Deep Posterior Cavities: A 2-Year Randomized Controlled Trial
Biomimetic Bilayered Substructure Restoration in Extensive Class II MOD Cavities
Departemen Konservasi Gigi, Universitas Padjadjaran
fitria.maharani@unpad.ac.id
Abstrak
INTRODUCTION
Biomimetic restorative dentistry aims to replicate the biomechanical, structural, and optical properties of intact natural tooth tissues [1]. Extensive Class II mesio-occluso-distal (MOD) cavities with cusp loss present a high risk of catastrophic vertical root fracture due to polymerization shrinkage stress and occlusal cyclic fatigue [2].
MATERIALS AND METHODS
Eighty vital posterior molars and premolars requiring extensive Class II MOD restorations were randomly assigned into two clinical groups (n = 40): bilayered restorations utilizing a discontinuous short-fiber reinforced composite (SFRC, everX Posterior) dentin substructure capped with nano-hybrid composite, versus conventional bulk-fill composite restorations. Modified USPHS/FDI clinical criteria were evaluated at baseline, 6, 12, and 24 months.
RESULTS
At the 24-month recall, the biomimetic SFRC substructure group demonstrated a 97.5% clinical survival rate with superior marginal adaptation and zero catastrophic cusp fractures compared to 87.5% in the control group (Table 1).
DISCUSSION
Randomly oriented millimeter-scale E-glass fibers within the semi-interpenetrating polymer network (semi-IPN) act as crack-stoppers that redirect and arrest propagating microcracks, mimicking the toughening mechanism of the dentinoenamel junction [1,3].
CONCLUSION
Short-fiber reinforced composite (SFRC) substructure bases significantly improve the 2-year clinical fracture resistance and marginal integrity of extensive posterior restorations.
Gambar & Ilustrasi Klinis
Tabel Data
Table 1. Modified FDI clinical evaluation scores at 24-month follow-up (n = 80).
| Evaluation Criterion | SFRC Bilayer Group (n=40) | Conventional Control (n=40) | p-value |
|---|---|---|---|
| Retention Rate (%) | 97.5% | 87.5% | 0.038* |
| Marginal Integrity (Score 1-2) | 95.0% | 82.5% | 0.041* |
| Anatomic Form & Fracture Resistance | 97.5% | 85.0% | 0.029* |
*Statistically significant difference at p < 0.05 (Chi-square and Mann-Whitney U test).
Informasi Izin & Lisensi Hak Cipta
Hak Cipta: Copyright © 2027 Indonesian Journal of Restorative Dentistry and Endodontics
Lisensi: Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0)
Karya ini dilisensikan di bawah Lisensi Internasional Creative Commons Attribution-ShareAlike 4.0 (CC BY-SA 4.0). Penulis memegang hak cipta dan memberikan hak publikasi pertama kepada jurnal, yang mengizinkan pihak lain membagikan dan mengadaptasi karya ini dengan mencantumkan pengakuan penulis serta publikasi awal di jurnal ini.
Referensi (3)
- Garoushi S, Gargoum A, Vallittu PK, Lassila L. Short fiber-reinforced composite restorations: a review of the current literature. J Investig Clin Dent. 2018;9(3):e12330. DOI Google Scholar
- Magne P, Belser UC. Porcelain versus composite inlays/onlays: effects of mechanical loads on stress distribution, adhesion, and crown flexure. Int J Periodontics Restorative Dent. 2003;23(6):543-555. Google Scholar
- Lassila L, Keulemans F, Säilynoja E, Vallittu PK, Garoushi S. Mechanical properties and fracture behavior of flowable fiber reinforced composite restorations. Dent Mater. 2018;34(4):598-606. DOI Google Scholar
