Clinical effectiveness of Invisalign

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Clinical effectiveness of Invisalign
Orthodontic developments, specifically during the
last years, have been accompanied by a important
surge in the esthetic demands of the patients..
Conventional orthodontic approaches have been
related with a general compromise in facial
appearance raising a major concern among patients
seeking orthodontic treatment. Thus, esthetic
materials and methods have been announced in
clinical practice aiming to overcome these
limitations. Since its development in 1997,
Invisalign technology has been established
worldwide as an esthetic alternative to labial
fixed appliances CAD/CAM stereo lithographic
technology has been used to forecast treatment
outcomes and fabricate a series of custom-made
aligners using a single silicone or digital
impression. After its introduction, the system
has been drastically developed and continually
improved in many aspects different attachment
designs, new materials, and new auxiliaries, such
as Precision Cuts and Power Ridges were
designed to enable additional treatment
biomechanics. According to the originator,
Invisalign can successfully do major tooth
movements, such as bicuspid derotation up to 45
and root movements of upper central incisors up
to 3.9 mm. In spite of the reinforced efficacy of
the treatment, its clinical strength still
remnants controversial among professionals, with
advocates being convinced by the successfully
demonstrated treated cases, as indicated by
clinical evidence, in difference to opponents
who argue about significant boundaries,
especially in the treatment of complex
malocclusions. In spite of the available body of
literature relating to Invisalign technology,
its clinical presentation has been examined less
thoroughly and a synthesis of the results still
remains vague. Four systematic reviews about
clear aligners exist in the literature the
first one was published back in 2005 and
assessed the treatment effects of Invisalign it
included, nevertheless, only two studies. More
recently, another three reviews have been
published. The major one was last reorganized in
June 2014. It included 10 studies and evaluated
the control of the clear aligners on orthodontic
tooth movement. The next one appraised the
periodontal health during clear aligner therapy
and was printed in the same year, and the most
recent one was undertaken in October 2014 and
encompassed four studies, since it attentive on
the judgment between clear aligners and
conventional braces.
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Therefore, the resolution of the present review
was to systematically search the literature and
summarize the current available scientific
evidence concerning the clinical effectiveness
of the Invisalign system as principal
orthodontic therapy to orthodontic patients of
any age treated with this method comparing
either among them or those with conventional
braces and evaluating the level of efficacy in
various malocclusions.