The purpose of this study is to use clear aligners to measure tooth movement and length of treatment.

Orthodontic tooth movement is the result of a force applied to the crown of a tooth and the biological remodeling of the gum and bony tissues.

Inclusion Criteria:

• Require Orthodontic Treatment
• Have a permanent dentition
• No craniofacial anomaly present
• No past and present signs and symptoms of periodontal disease
• No significant medical history or medication that would adversely affect the development or structure of the teeth and jaws and any subsequent tooth movement
• No previous orthodontic or orthopaedic relapse
• No history of trauma, bruxism or parafunction
• 16- 46 years old, inclusive
• No skeletal jaw discrepancy
• Angle Class I or Class II molar and canine relationship
• Crowding of at least 4mm per arch
• No osteoporosis drugs

Exclusion Criteria:

• Subjects who do not fulfill all inclusion criteria requirements

baseline until end of treatment, an average of 78 weeks

An adverse event (AE) is any unwanted dental occurrence in a clinical investigation subject whether or not the AE is suspected of having a causal relationship with study treatment. Pre-existing events, which increase in frequency or severity or change in nature during or as a consequence of use of an appliance clinical trials, will also be considered as adverse events.