My orthodontist said use one elastic and I'm using two?

In the early days of orthodontia, eighty or ninety years ago, it was common for the orthodontist to use much more pressure to move a patient's teeth than is done nowadays.

The first few days after an adjustment were very painful for the patient. Now, it's mostly just discomfort.

The process of moving teeth involves encouraging the jaw bone to dissolve in the areas the teeth are pushed toward, and to build up in the areas behind where they are moved from. This process has a natural pace, and trying to accelerate it could leave the teeth too loosely anchored, and stretch their nerves and blood supply faster than they can accommodate.

A rubber band exerts pressure in a definite direction on the tooth in question. It's not always possible to push the tooth exactly in the path it's supposed to go. Moving it slowly and steadily enables the orthodontist to keep track of the changes, and guide it into correct alignment. Extra force could move the tooth in a crooked way.

You just have to comprehend how bone regenerates, and what it can and can't do.

Are you currently in the process of marrying or divorcing your orthodontist?

As for your misplaced question, only an idiot goes to a professional, pays him/her for their professional opinion and then chooses to disregard their advice. CLEARLY there are reasons why the process should not progress faster than prescribed. But since you think you know better than a person who's spent years of his/her life studying this, go right ahead and ruin your teeth.

While Liz may have been very blunt, she is correct. It would be better to consult with your professional BEFORE altering treatment, for whatever reason - or may be going elsewhere for a second opinion, if you think they aren't doing the best for you.

Treating this yourself may result in unexpected consequences.