There is no such thing as a dwarf or super-dwarf orange tree.
Yes, some varieties might be a bit smaller than others, but not that much. An orange tree can be dwarfed to some extent by the rootstock, such as the Flying Dragon form of Poncirus trifoliata, and by the growing conditions. But your plant must be either a rooted cutting or a seedling. No grafted plant would have fitted in a test tube!
Just keep treating it well, without constant pruning, and it will flower and fruit eventually.

Hi,
My family has two dwarf orange trees that flower 50 buds a year easily. The fruit at mature stage is about 1" in size. We do nothing but water and put them in the sun on the patio. They are potted plants and really do well just as they are! I started a plant from a seed last summer and it is doing great too. This is my first citrus plant to grow from seed so I don't know if it will produce the same fruit if any at all without a graft.

The fruit is really sour but fantastic in ice tea.

Brenda B

True, about about a grafted tree in a test tube, Although, citrus treesource has grafted tree roots in a cone about 1.5" across and 5" long. The rest of the tree is usually about 8" high. Is that what you mean by test tube? The roots where in the test tube?