Optibond Solo Plus is a single component adhesive designed for both direct and indirect bonding applications. OptiBond Solo unique technology provides the highest level of protection against micro leakage, while sustaining high bond strengths to a variety of surfaces. Solo Plus Optibond filler not only reinforces the hybrid zone but also penetrates the dentin tubules, creating a true structured bond not found in unfilled or even nano filled adhesive systems. Refill 5ml bottle. We also carry unit dose Optibond for premeasure dispensing.