PENGARUH PITA FIBER POLYETHYLENE SECARA WALLPAPERING TERHADAP DISTRIBUSI STRES RESTORASI RESIN KOMPOSIT KELAS I (KAJIAN in silico)

Urfa Tabtila, drg. Margareta Rinastiti, MKes.,SpKG, Subsp.KR.,PhD; Dr. drg. R. Tri Endra Untara,MKes, Sp.KG, Subsp. KR

2026 | Tesis-Spesialis | S2 Ilmu Konservasi Gigi

PENGARUH PITA FIBER POLYETHYLENE SECARA WALLPAPERING TERHADAP DISTRIBUSI STRES RESTORASI RESIN KOMPOSIT KELAS I (KAJIAN in silico)

INTISARI

Karies gigi memiliki prevalensi tinggi terutama pada kavitas kelas I gigi posterior yang rentan kegagalan mekanis. Resin komposit banyak digunakan, namun keterbatasan berupa penyusutan polimerisasi dan distribusi stres meningkatkan risiko kebocoran mikro serta fraktur. Penguatan dengan pita fiber polyethylene secara wallpapering dapat memperbaiki distribusi tegangan, meningkatkan ketahanan fraktur, dan memperpanjang keberhasilan restorasi. Penelitian ini bertujuan mengetahui pengaruh fiber polyethylene wallpapering terhadap distribusi stres pada restorasi resin komposit kelas I.

Penelitian dilakukan secara in silico berbasis finite element analysis (FEA). Model 3D premolar maksila dibuat menggunakan pemindaian intraoral, radiografi 3D, dan pemodelan Autodesk Inventor 2025, menghasilkan empat model: gigi utuh, gigi kavitas kelas I, gigi dengan restorasi resin komposit, dan gigi dengan restorasi diperkuat fiber polyethylene secara wallpapering. Simulasi FEA menggunakan ANSYS 2025 R1 dilakukan dengan beban vertikal 300 N dan 738 N pada fossa sentral. Distribusi stres von Mises dianalisis pada lapisan atas, tengah, dan bawah, kemudian diuji dengan Shapiro-Wilk, Levene’s test, ANAVA dua jalur, serta PostHoc Tukey (95%). 

Hasil menunjukkan jenis restorasi dan besar beban berpengaruh signifikan terhadap distribusi stres von Mises (p < 0> 0,05). Pada lapisan tengah, gigi utuh berbeda signifikan dengan kelompok lain, sedangkan kelompok restorasi tidak berbeda nyata. Pada lapisan bawah, kelompok kavitas berbeda bermakna, sementara kelompok restorasi dengan atau tanpa fiber mendekati gigi utuh. Kesimpulan yaitu fiber polyethylene wallpapering menurunkan stres dan menghasilkan distribusi tegangan lebih merata menyerupai gigi utuh.

EFFECT OF POLYETHYLENE FIBER WALLPAPERING ON STRESS DISTRIBUTION IN CLASS I COMPOSITE RESTORATIONS UNDER VARYING OCCLUSAL LOADS: A THREE-DIMENSIONAL FINITE ELEMENT ANALYSIS

ABSTRACT

Dental caries is highly prevalent, particularly in class I cavities of posterior. teeth, which are prone to mechanical failure. Composite resin is widely used, but limitations such as polymerization shrinkage and unfavorable stress distribution increase the risk of microleakage and fracture. Reinforcement with polyethylene fiber using the wallpapering technique may improve stress distribution, enhance fracture resistance, and extend restoration longevity. This study aimed to evaluate the effect of polyethylene fiber wallpapering on stress distribution in class I composite restorations.

This in silico study used finite element analysis (FEA). A 3D maxillary premolar model was developed through intraoral scanning, 3D radiography, and Autodesk Inventor 2025, resulting in four models: intact tooth, tooth with class I cavity, tooth restored with composite resin, and tooth restored with composite resin reinforced by polyethylene fiber wallpapering. FEA simulation in ANSYS 2025 R1 applied vertical loads of 300 N and 738 N on the central fossa. von Mises stress distribution was analyzed in upper, middle, and lower layers, followed by Shapiro-Wilk, Levene’s test, two-way ANOVA, and PostHoc Tukey (95%).

Results showed restoration type and load magnitude significantly influenced stress distribution (p < 0> 0.05). In the middle layer, intact teeth differed from other groups, while restored groups did not. In the lower layer, the cavity group differed, whereas restored groups approximated intact teeth. In conclusion, polyethylene fiber wallpapering reduced stress and provided more uniform distribution resembling intact teeth.

Kata Kunci : fiber polyethylene, wallpapering, restorasi komposit, distribusi stres, analisis elemen hingga