expansion screw


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expansion screw

A mechanical device set into a removable or fixed appliance to enlarge the dental arch.
See also: screw
References in periodicals archive ?
Pain was reported by 66.12 per cent (41 patients) after first activation of expansion screw. 87.80 per cent (36 patients) perceived pain in the first two hours (Table 1).
Influence of the expansion screw height on the dental effects of the hyrax expander: A study with finite elements.
(14) Mini-implant supported expansion screw of the inter maxillary suture showed a high tensile stress concentration by finite element simulation.