PENGARUH ORIENTASI DAN VOLUMETRIK GLASS FIBER NON DENTAL TERHADAP KEKUATAN PERLEKATAN GESER FIBER REINFORCED COMPOSITES UNTUK SPLINTING PERIODONTAL

DEDI SUMANTRI, Dr.drg.Siti Sunarintyas, M.Kes; Dr.drg.Dahlia Herawati, SU.,Sp.Perio (K)

2015 | Tesis | S2 Ilmu Kedokteran Gigi

INTISARI Fiber Reinforced Composite (FRC) menggunakan glass fiber dental dalam bidang kedokteran gigi telah banyak di aplikasikan secara klinis, salah satunya dalam aplikasi splinting periodontal. Ketersediaan glass fiber dental di Indonesia masih terbatas dengan harga yang cukup mahal. Terdapat bahan glass fiber non dental yang banyak digunakan bidang teknik, mudah mendapatkannya dengan harga relatif terjangkau. Tujuan dari penelitian ini untuk mengetahui pengaruh orientasi dan volumetrik glass fiber non dental terhadap kekuatan perlekatan geser FRC pada alat splinting periodontal. Bahan penelitian berupa glass fiber non dental yang terdiri dari tiga jenis yaitu glass fiber mats (LT, China), glass fiber roving (CMAX, China), dan glass fiber woven roving (HJ, China), serta E-glass fiber dental (Fiber-Splint, Polidentia SA, Switzerland). Objek penelitian terdiri dari tiga puluh dua gigi Premolar pertama rahang atas yang ditanam dalam resin akrilik berbentuk kubus berukuran 15 x 15 x 15 mm. Sampel FRC dibuat dari pelat kuningan berukuran 3,2 x 2,2 x 1,5 mm, yang akan dilekatkan pada permukaan bukal gigi Premolar. Objek dibagi menjadi 8 kelompok, masing-masing kelompok terdiri atas 4 sampel. Kelompok I (kontrol) tanpa penambahan glass fiber non dental, kelompok II E-glass fiber dental 2,8 vol%, dan kelompok III - VIII terdiri dari glass fiber non dental jenis mats, glass fiber non dental roving, dan glass fiber non dental woven roving, dengan fraksi volumetrik 2,8 dan 5,4 vol%. Seluruh sampel direndam dalam air destilasi selama 24 jam pada suhu 37o C. Pengujian kekuatan perlekatan geser menggunakan Universal Testing Machine. Data dianalisis menggunakan ANAVA dua jalur, uji t dan LSD. Hasil penelitian menunjukkan rerata kekuatan perlekatan geser (MPa) FRC glass fiber non dental: 2,8 vol% glass fiber mats (11,51 ± 0,19); 5,4 vol% glass fiber mats (12,56 ± 0,17); 2,8 vol% glass fiber roving (10,38 ± 0,36); 5,4 vol% glass fiber roving (11,42 ± 0,31); 2,8 vol% glass fiber woven roving (12,58 ± 0,18); 5,4 vol% glass fiber woven roving (14,11 ± 0,35); sedangkan FRC tanpa fiber (kontrol) memiliki rerata (8,95 ± 0,95). Hasil analisis ANAVA dua jalur menunjukkan variabel orientasi dan volumetrik glass fiber non dental memberikan pengaruh signifikan (p<0,05), sedangkan interaksi antara orientasi dan volumetrik glass fiber non dental tidak berpengaruh signifikan (p>0,05). Uji post hoc LSD dan t_test menunjukkan perbedaan signifikan (p<0,05) pada seluruh kelompok perlakuan untuk variabel orientasi dan volumetrik. Kesimpulan penelitian ini adalah orientasi dan volumetrik glass fiber non dental memberikan pengaruh terhadap peningkatan kekuatan perlekatan geser FRC.

ABSTRACT Fiber Reinforced Composite (FRC) using glass fiber dental in the field of Dentistry has been widely applied clinically, one of them in the application of periodontal splinting. glass fiber dental availability was still limited at a price that was quite expensive in Indonesia. There was a glass fiber material non dental widely used engineering, it was easy to get one with a relatively affordable price. The purpose of this research was to knew the effect of the orientation and volumetric glass fiber non dental on shear bond strength of the FRC periodontal splinting. Research material in the form of glass fiber non dental consisted of three types, namely glass fiber mats (LT, China), glass fiber roving (CMAX, China), glass fiber woven roving (HJ, China) and E-glass fiber dental (Fiber-Splint, Polidentia SA, Switzerland). The experiment involved of thirty two teeth of maxillary first Premolars were embedded in a cube acrylic resin with the dimensions of 15 x 15 x 15 mm. Samples of the FRC made of brass plate with the dimensions of 3.2 x 2.2 x 1.5 mm, which will be bonded on the surface of the buccal of Premolars. Objects were divided into 8 groups, each group contains of 4 samples. Group I (control) without the addition of glass fiber non dental, group II E-glass fiber dental with 2.8 vol%, group III-VIII consists of glass fiber non dental mats, glass fiber non dental roving, and glass fiber non dental woven roving, with volumetric fraction of 2.8 and 5.4 vol%. All samples were soaked in distillation water for 24 hours at 37o C temperature. Samples were tested for shear bond strength of FRC using the Universal Testing Machine. The data was analyzed using two way of ANOVA, t_test and LSD. The results showed that the mean of shear bonding strength (MPa) FRC glass fiber non dental: 2.8 vol% glass fiber mats (11,51 ± 0,19); 5.4 vol% glass fiber mats (12,56 ± 0.17); 2.8 vol% glass fiber roving (10,38 ± 0.36); 5.4 vol% glass fiber roving (11,42 ± 0.31); 2.8 vol% glass fiber woven roving (12,58 ± 0.18); 5.4 vol% glass fiber woven roving (14.11 ± 0.35); While the shear bonding strength of FRC without fiber(control) (8.95 ± 0.95). Two way of ANOVA analysis showed that the orientation and volumetric glass fiber non dental had significant effect (p<0.05), while the interaction between orientation and volumetric glass fiber non dental had not significant effect (p>0.05). LSD post hoc test and t_test showed significant difference (p<0.05) on the whole group treatment for orientation and volumetric variable. The conclusion of this research that was the orientation and volumetric of the glass fiber non dental could increase the shear bond strength of FRC.

Kata Kunci : glass fiber non dental, glass fiber mats, glass fiber roving, glass fiber woven roving, volumetrik fiber, kekuatan perlekatan geser