different between orthodontics vs cementation

English

From orth- +? -odont +? -ics.

orthodontics (uncountable)

(medicine) A specialty of dentistry concerned with correcting misalignment of teeth.

cement +? -ation

cementation (countable and uncountable, plural cementations)

The act of cementing
(metallurgy) The impregnation of the surface of a metal with another material; the manufacture of steel by carburizing iron
(geology) The precipitation of mineral matter in the pores of a sediment
(medicine) The use of a cement join the parts of a broken bone to aid in the healing process
(dentistry) The use of a cement or adhesive to fasten orthodontics or to restore chipped or broken teeth

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