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Repairing a broken lingual bar
Paragraph Clinics
T
HERE are many ways by which the little everyday problems in prosthetics may be solved. Your solutions to these problems will be helpful to otheri. They may be shown by one picture and one descriptive paragraph in the I’(zrtzsection of the JOURKAL. graph. Clikcs KEPAIRING CLARENCE
A BROKEN
LINGUAL
H. BLANCHARD,
BAR
D.1I.S.
vv
HEN YOUR PROBLEM is a broken lingual or palatal bar try this. Line up the ends on the bench or in your hand, and tack a short piece of annealed wire across the break with lead solder. Brass wire, 20 or 22 gauge, such as orthodontists use for opening space between contact points is a good kind. This forms a semiflexible attachment between the parts that can be taken to she mouth for further aligning. Seat the partial denture firmly and accurately do the wire joining the halves of the denture will be made to conform to the correct position. Then make an occlusal impression in plaster or quick setting soldering investment.
Fig. l.-This broken partial denture has the ends of the brass wire protruding beyond the ball of lead-tin solder which bridges the break in the lingual bar. Sometimes it is preferable to fasten the wire with two spots of solder, one on each piece of the bar, so the wire slone will bridge the break.
Later, the lead solder and wire must be removed completely by scraping and grinding to the clean gold. The parts of the denture are reassembled in the occlusal impression, and the permanent repairs are made. 1x5
BLANCHARD
136
J. Pros. Den. January, 1954
NOTE: A quick setting soldering investment can be made by mixing equal weights of Kerr Cristobalite inlay investment and Weinstein No. 3 outer investment. For ordinary soldering and investing purposes, mix this investment with [water to a fairly thick consistency. It can be heated for wax elimination or presoldering expansion in about ten minutes. When it is used for occlusal impressions on which work can be placed for soldering, the setting rate of the soldering investment should be accelerated by mixing it with a saturated potassium sulpliate solution. Then it will set in approximately one minute, if it is mixed like putty and used immediately. This formula gives excellent expansion characteristics any size. 617 S. OLIVE ST. Los ANGELES14, CALIF.
for soldering work of
T
HERE are many ways by which the little everyday problems in prosthetics may be solved. Your solutions to these problems will be helpful to otheri. They may be shown by one picture and one descriptive paragraph in the I’(zrtzsection of the JOURKAL. graph. Clikcs KEPAIRING CLARENCE
A BROKEN
LINGUAL
H. BLANCHARD,
BAR
D.1I.S.
vv
HEN YOUR PROBLEM is a broken lingual or palatal bar try this. Line up the ends on the bench or in your hand, and tack a short piece of annealed wire across the break with lead solder. Brass wire, 20 or 22 gauge, such as orthodontists use for opening space between contact points is a good kind. This forms a semiflexible attachment between the parts that can be taken to she mouth for further aligning. Seat the partial denture firmly and accurately do the wire joining the halves of the denture will be made to conform to the correct position. Then make an occlusal impression in plaster or quick setting soldering investment.
Fig. l.-This broken partial denture has the ends of the brass wire protruding beyond the ball of lead-tin solder which bridges the break in the lingual bar. Sometimes it is preferable to fasten the wire with two spots of solder, one on each piece of the bar, so the wire slone will bridge the break.
Later, the lead solder and wire must be removed completely by scraping and grinding to the clean gold. The parts of the denture are reassembled in the occlusal impression, and the permanent repairs are made. 1x5
BLANCHARD
136
J. Pros. Den. January, 1954
NOTE: A quick setting soldering investment can be made by mixing equal weights of Kerr Cristobalite inlay investment and Weinstein No. 3 outer investment. For ordinary soldering and investing purposes, mix this investment with [water to a fairly thick consistency. It can be heated for wax elimination or presoldering expansion in about ten minutes. When it is used for occlusal impressions on which work can be placed for soldering, the setting rate of the soldering investment should be accelerated by mixing it with a saturated potassium sulpliate solution. Then it will set in approximately one minute, if it is mixed like putty and used immediately. This formula gives excellent expansion characteristics any size. 617 S. OLIVE ST. Los ANGELES14, CALIF.
for soldering work of