Tumpatan semen ionomer kaca kerapkali ditemukan pada permukaan labial atau bukal gigi, kerapkali menyebabkan kegagalan pelekatan braket. Tujuan penelitian ini mempelajari pengaruh tiga macam bahan adhesif terhadap kekuatan geser pelekatan braket logam pada dua macam bahan restorasi. Kelompok A (15 diskus bahan restorasi semen ionomer kaca konvensional) dan kelompok B (15 diskus bahan restorasi semen ionomer kaca modifikasi resin). Seluruh diskus disimpan dalam saliva buatan selama 7 hari, kemudian dikasarkan dengan bur intan. Masing-masing kelompok dibagi menjadi 3 berdasarkan bahan adhesif yang digunakan untuk melekatkan braket, yaitu bahan adhesif self curing composite adhesive system, light curing composite adhesive system, dan semen ionomer kaca modifikasi resin. Kekuatan geser diuji dengan Universal Testing Machine dilanjutkan uji ARI. Hasil yang didapat diolah secara statistik dengan ANAVA dua jalur dan Mann Whitney. Hasil penelitian ini menunjukkan tidak terdapat perbedaan kekuatan geser pelekatan braket logam menggunakan bahan adhesif self curing composite adhesive system, light curing composite adhesive system dan semen ionomer kaca modifikasi resin (p>0,05). Terdapat perbedaan kekuatan geser pelekatan braket logam antara bahan restorasi semen ionomer kaca modifikasi resin dan bahan restorasi semen ionomer kaca konvensional (p<0,05). Kesimpulan penelitian ini, tiga macam bahan adhesif tidak mempengaruhi kekuatan geser pelekatan braket logam pada restorasi semen ionomer kaca, tetapi kekuatan geser pelekatan braket logam pada bahan restorasi semen ionomer kaca modifikasi resin lebih besar daripada bahan restorasi semen ionomer kaca konvensional. Kegagalan pelekatan braket logam menggunakan bahan adhesif self curing composite adhesive system dan semen ionomer kaca modifikasi resin merupakan kegagalan kohesi, menggunakan light curing composite adhesive system merupakan kegagalan kohesi dan adesi.

Glass ionomer cement restoration are often found on the labial or buccal surfaces, this commonly cause failure on bonding of the bracket. The purpose of this research is to understand the effect of three types of adhesive material towards the shear bond strength of metal bracket attachment on two kinds of restorative material. Group A (15 discs of conventional glass ionomer cement) and group B (15 discs of resin-modified glass ionomer cement). The entire discs was stored in artificial saliva for 7 days, then rugged using diamond drill. Each group was then divided into 3 portions based on the type of adhesive used to bonding the bracket, self curing composite adhesive system, light curing composite adhesive system, and resin-modified glass ionomer cement. The shear bond strength were tested using Universal Testing Machine followed by ARI test. The results obtained were statistically processed with two-way ANAVA and Mann Whitney. The results showed that there is no difference on the shear bond strength of metal bracket bonding using self curing composite adhesive system, light curing composite adhesive system and resin-modified glass ionomer cement (p>0,05). There is a significant difference on shear bond strength of metal bracket between resin-modfied glass ionomer cement restoration and conventional glass ionomer cement restoration. This study concluded that these three type of adhesive did not give significant difference on shear band strength metal bracket on glass ionomer cement restoration, but resin-modfied glass ionomer cement restoration have higher shear band strength than conventional glass ionomer cement restoration. The bonding failured of the metal bracket using self curing composite adhesive system and resin-modified glass ionomer cement is failure of cohesion, but the bonding failured of the metal bracket using light curing composite adhesive system is failure of cohesion and adhesion.

Kata Kunci : type of adhesive material, glass ionomer cement restoration, shear bond strength of the bracket