The plaster figure is fashioned by pouring dental plaster into a duplicate made of such materials (impression materials) and thereby provide elasticity sufficient to recreate the details of the patient's tooth alignment.
石膏模型は、弾力性があり細部が再現できるなどの要件を満たす材料（印象材）で歯並びを再現した物に歯科用の石膏を流し込んでつくる。