Although different materials of mandibular fixed retainer were discussed in the literature, there is contradicting evidence regarding the bond failure of Titanium fixed metal retainer, whether immediate or after 12 months. Moreover, insufficient evidence is present regarding 3D metal printed fixed mandibular retainers.
In recent years a new possibility is available for dental practitioners: CAD-CAM technology and 3D printing, which find their application in all aspects of orthodontics. Orthodontists are already familiar with several products that use 3D printers (i.e. invisible aligners), also known as additive manufacturing, 3D printing is a technology whereby sequential layers of material are layered on top of one another to form an object23. Two recent articles reported the fabrication of a custom lingual retainer cut from a nickel-titanium block with CAD/CAM technology and a CAD/CAM Zirconium bar as a bonded mandibular fixed retainer.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
64
The key of modification is digitally designing fixed metal retainer which will be custom made for each patient, and 3D metal printing of the fixed retention wire using Metal printer instead of using generic metal wire for all patients.
Conventional fixed metal retainer will be used. Multi strand wire will be used
Cairo University
Giza, Egypt
RECRUITINGBond Failure
Counting number of teeth debonded immediately after placement of wire up to 12 months
Time frame: immediate up to 12 months
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