Abstract: The present invention provides a customized guide that can releasably engage with a patient's dental arch. A rigid link, preferably a standard rigid link, is provided to connect the guide and a bracket that is to be adhered to a tooth. With the standard link, the invention exhibits numerous technical merits such as simplified operation, and accurate placement and adhesion of brackets onto teeth, among others.

Abstract: A complex orthodontic system comprises: multiple sets of dental appliances, and the dental appliances have cavities of respective predetermined geometric shapes to move teeth of a patient from an initial tooth arrangement to an expected tooth arrangement gradually, wherein at least one set of the multiple sets of dental appliances comprises two or more dental appliances of substantially the same geometric shape. The resilience force of the dental appliance can be maintained during the use period by using the complex orthodontic system, which can also shorten the treatment cycle, save materials, and improve the treatment results and the use comfort.