IDisposable - Necessary with managed resources?

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C#

I normally use the full pattern, but, I'm curious, since I'm using managed resources, for example, the Texture class from SlimDX, which, I'm guessing already implements the full pattern, is it really needed?

For the moment I'm using plain calls like this in my classes.

public class MyClass // I'm not even using the IDisposable interface right now.
{
    Texture texture;

    public void Dispose() // I'm simply calling the underlying dispose methods on objects.
    {
        texture.Dispose();
    }
}

So, yeah, are there any benefits to switching over to the full pattern, or am I just wasting time, and making my code slower(a little overhead here, and there, etc,. It adds up.) for no reason by using the full pattern?

Thanks. :)