Ergas R P, Hondrum S O, Mathieu G P, Koonce J D
United States Army at Fort Meade, Maryland, USA.
Pediatr Dent. 1995 May-Jun;17(3):204-6.
The adhesive monomer, Clearfil New Bond, was used to enhance the bond strength between orthodontic brackets and primary molars, premolars, and NiCr crowns. Twenty specimens of each had this dental adhesive applied according to the manufacturer's instructions in addition to a chemically cured composite material. The remaining specimens (20 each) were bonded without the adhesive monomer. Shear bond strengths were determined using a universal testing machine. Fracture sites were examined to determine the type of bond failure. All bond strengths were significantly increased with the addition of Clearfil New Bond (P < or = 0.0001). The shear bond strength to NiCr crowns with the addition of the adhesive monomer was 7.76 kg. This is comparable to the shear bond strength observed for primary molars (8.66 kg) and premolars (8.65 kg) without adhesive monomer. The observed decrease in adhesive bond failures with the addition of Clearfil New Bond indicated a stronger shear bond strength between the tooth surface and the bracket base. Clearfil New Bond can significantly increase the shear bond strength of orthodontic brackets to both primary molars and premolars. Additionally, it was shown that orthodontic brackets can be successfully bonded to Ni-Cr crowns at strengths comparable to primary or permanent enamel.
粘结单体Clearfil New Bond用于增强正畸托槽与乳磨牙、前磨牙及镍铬合金冠之间的粘结强度。每组20个样本，除了使用化学固化复合材料外，还按照制造商的说明使用了这种牙科粘结剂。其余样本（每组20个）未使用粘结单体进行粘结。使用万能试验机测定剪切粘结强度。检查断裂部位以确定粘结失败的类型。添加Clearfil New Bond后，所有粘结强度均显著提高（P≤0.0001）。添加粘结单体后，与镍铬合金冠的剪切粘结强度为7.76千克。这与未使用粘结单体时乳磨牙（8.66千克）和前磨牙（8.65千克）的剪切粘结强度相当。添加Clearfil New Bond后观察到粘结失败减少，表明牙齿表面与托槽底座之间的剪切粘结强度更强。Clearfil New Bond可显著提高正畸托槽与乳磨牙和前磨牙的剪切粘结强度。此外，研究表明正畸托槽能够以与乳牙或恒牙釉质相当的强度成功粘结到镍铬合金冠上。
