Evaluation of Clear Aligner Trays to Straighten Teeth

This is a prospective, multi-center study with a maximum duration of 24 months, to assess the
safety and efficacy of 3M Clear Aligners, with the use of attachments to correct teeth
malocclusions.

The subject population for this study will be male and female subjects ≥ 14 years of age.
Subjects who meet the inclusion and exclusion criteria will be asked to participate in the
study. Up to a total of 180 subjects may be enrolled at up to 12 different clinical research
sites, (up to 15 subjects per site).

The subjects will undergo a target of up to 24 months of treatment to align the teeth to the
planned target. Subjects will wear the Clear Aligners for at least 22 hours per day, with the
exception of consumption of meals and beverages, with the exception of water, which can be
consumed while wearing the aligners. During each 6-week period between follow up visits,
subjects will wear each set of Clear Aligners for 2 weeks, in the order indicated per the
Orthodontists treatment plan.

Inclusion Criteria:

1. Subject is at least 14 years of age.

2. Subject is willing and able to give informed consent.

3. Subject is willing to be digitally scanned at each 6-week visit, including after
application of attachments.

4. Subject has a need for single or double arch orthodontic treatment with a target
duration of 18 months or less.

5. Subject has good oral hygiene defined by the orthodontist.

6. Subject has only permanent dentition.

Exclusion Criteria:

1. Subject has skeletal discrepancies requiring surgery

2. Subject is undergoing active dental work

3. Subject has severe open bite > 2 mm

4. Subject has severe overjet > 4 mm

5. Subject has deep bite > 3 mm

6. Subject has over crowding per arch > 4 mm

7. Subject has dental prostheses/implants that will interfere with projected teeth
movement

8. Subject is taking systemic steroid medication

9. Subject is taking Biphosphonates or any other medication for treatment of osteoporosis