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Wire fracture

Wire fracture. Possible to carry out soldered repair to an adam’s clasp if a fracture has occurred at tip of arrowhead. This is an unusual place of fracture unless the wire been overworked during construction.

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Wire fracture

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  1. Wire fracture

  2. Possible to carry out soldered repair to an adam’s clasp if a fracture has occurred at tip of arrowhead. • This is an unusual place of fracture unless the wire been overworked during construction. • The arrowhead should be cleaned, fluxed and flushed with solder. Other attempts are not worth and replacement is more sensible.

  3. On ocassion, a clasp that has broken where the wire crosses the embrasure may be cut away to leave one intact arrowhead, which can be pinched closed with a pair of pliers so no sharp end remains. • The arrowhead may adjusted to provide retention. This is useful where retention provided by other wire is fairy good and especially when appliance is not going to be worn for much longer.

  4. For broken springs, the remains of the spring are cut away and a recess drilled into the fitting surfaces of acrylic baseplate. • A replacement spring may be bent up and embedded into this space using small amout cold cured acrylic. • In case palatal finger spring, the presence of guard wire will help to hold new spring in place during this procedure.

  5. References • 1. Kerr, W.J.S. (1984) Appliance breakages. British journal of Orthodontics, 11: 137-142 • 2. Munns, D. (1971) An analysis of broken removable appliances. Proceedings BSSO, 45-48

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