Removable Aligners, Conventional Brackets Clinical Trial
Official title:
Comparison of the Efficiency of Maxillary Canine Retraction Using Aligners Versus Conventional Brackets in Orthodontic Extraction Cases.
The aim of this study is to compare the effectiveness of Clear aligners and Conventional braces for upper canine retraction (space closure) regarding canine tipping , anchorage loss and treatment time.
Conventional fixed orthodontic treatment with metal brackets has been rejected by some adult
patients because of esthetic and social concerns, but the demand for orthodontic treatment is
currently increasing. To satisfy the demands and needs of these patients, the emphasis has
shifted toward esthetic orthodontic appliance system. Less noticeable appliances such as
ceramic, resin, and lingual brackets, or removable clear appliances such as the Essix and
Invisalign (Align Technology, Santa Clara, Calif) provide esthetic orthodontic appliance
alternatives.
Since the introduction of clear aligners to the public in 1999, it has become a popular
treatment choice for clinicians because of the aesthetics and comfort of the removable clear
aligners compared with traditional appliances. Several studies have shown significant
limitations of this technique, especially in treating complex malocclusions, whereas other
studies have reported successfully treated cases with this removable appliance. A systematic
review conducted to determine the treatment effects of clear aligners showed that no strong
conclusions could be made regarding the treatment effects of aligners . Therefore, clinical
trials were still required to investigate the effectiveness of the Invisalign system.
When using the aligners to correct severe crowding, root positions must be carefully
controlled during extraction space closure, and clear aligners must be properly grip all
teeth to be moved, Tipping was a common problem in premolar extraction cases during the early
years of aligners use. Several previous reports have also discussed the limited ability of
thermoplastic appliances to control root-tipping movements and to establish root control
comparable to that provided by fixed appliances. The investigators describe the extraction
treatment of a patient with moderate to severe tooth crowding using mini screws and clear
appliances, thus eliminating the need for conventional brackets.
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