Invisalign, designed and manufactured in North America by Align Technology, is the most advanced orthodontic treatment on the market in 2013, as it meets the need for straighter teeth while avoiding the drawbacks of traditional braces that can reveal “steel teeth. Patients only need a piece of clear braces to wear, and can gradually align their uneven teeth. 1, information questions Invisalign is an invisible aligner designed and manufactured by Align Technology in North America. 2, product differences Working Principle: As opposed to metal braces that use archwires and brackets to straighten teeth, Invisalign aligners straighten teeth through a series of clear, self-removable bracketless invisible aligners that do not use metal archwires for braces and brackets during orthodontic treatment. Visual effect: No metal braces are invisible, and Invisalign is nearly invisible. Oral health: The metal companies and brackets in metal braces can irritate the mouth while getting in the way of cleaning all the teeth and the dental bed during brushing. With Invisalign, you can brush and floss your teeth normally during treatment. Wearing status: Metal braces cannot be removed before treatment stay, while Invisalign braces can be removed during treatment. Advantages of Invisalign: The orthodontic effect is precise, and the customized plan aligns the teeth neatly, exactly according to your dental model computer 3D shaping assisted design. Invisalign is suitable for people with mild to moderate malocclusion, including individual teeth misalignment, crowded teeth, uneven teeth, gaps, anterior teeth rebound, etc. Invisalign precautions: The wearer wears it at all times except when eating, drinking, brushing, and flossing, which means the patient needs to wear it most of the time 24 hours a day. The aligners are worn for at least 22 hours a day and then replaced with a new set of aligners every two weeks. The average patient’s course of treatment lasts 12 to 18 months, depending on the patient’s dental condition. For most patients, Invisalign takes about 12 to 15 months, and for a small number of patients the course of treatment will last longer, such as 18 months. 3. Wearing method Wear the aligners for at least 22 hours a day except when eating, drinking, and brushing and flossing your teeth, and then replace them with a new set every two weeks. A review is required every 6 to 8 weeks. Teeth will be gradually straightened. The usual course of treatment lasts 12 to 18 months and requires approximately 20 to 30 sets of aligners per arch.