Experienced orthodontists will know all about using elastics and buttons to erupt the back teeth. Too compilcated for the Blog to be detailed here but advanced training Invisalign courses will train non orthodontists. Again it behoves the patient to choose a dentist with orthodontic training to get the best possible outcome when doing invisalign.
More usual though is the desire to produce level front teeth (the lateral incisors are often shorter than the central incisors). Three choices exist to get level front teeth. Firstly porcelain veneers can be added to the shorter teeth to make them look longer. Secondly buttons and elastics can be used to erupt the smaller teeth with unpredictable results. And thirdly a partial fixed brace can be placed for a week at most to erupt the teeth as desired. Most patients will be fine with the idea with a brace for what is often just from Friday afternoon – Monday morning.