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The wing relining technique
Dental technology DANIEL H. GEHL and S. HOWARD PAYNE, Associate
The wing
relining
Finn Tengs Christensen, Bergen University,
Editors
technique L.D.S.*
School of Dentistry,
Bergen, Norway
1 he wing relining method is a laboratory procedure in connection with relining technique. It is indicated where the denture has been used as an impression tray. The justification for the wing relining method is that alterations in the vertical dimension during the procedure are minimal. It is assumed that undercuts on the denture base have been removed before the impression procedure. THE SHAPE OF THE BORDER OF THE CAST 1. Extend the periphery (the land) of the cast to at least 10 mm. from the denture buccally and labially. 2. Make three grooves in the land: one groove in the front and one on each side, and make it before the denture with the impression in it is removed from the cast (Fig. 1) . 3. Extend the grooves to a width of about 10 to 15 mm. and let the sides of the grooves diverge with the broadest part of the grooves toward the denture (Fig. 1). 4. Remove the exposed impression material which is situated between the denture and the grooves. 5. Make the surface of the denture opposite the grooves uneven by means of grinding (Fig. 1) . 6. Isolate the plaster of the grooves with a separating medium. 7. Apply acrylic resin monomer on the uneven resin surface opposite each groove. 8. Fill the grooves with cold-curing acrylic resin so that the acrylic resin of the denture and the acrylic resin in the grooves (the wings) form a continuous unit. 9. Make flat the upper surface of the wings so that clamps can be screwed onto them (See Fig. 3). PREPARING THE CAST AND THE BASE OF THE DENTURE FOR THE APPLICATION OF THE ACRYLIC RESIN RELINING MATERIAL 1. Separate the cast from the denture. 2. Remove the impression material, stains, etc., from the denture. Read before the Norwegian Dental *Head of Prosthetic Department.
268
Association,
Bergen,
Norway.
Volume 22 Number 2
Wing
relining
technique
269
of the cast should be extended to III ,tke Fig. 1. By the wing relining technique, the periphery spa, :e for grooves and wings (A, B, C). The sides of the grooves should deviate with the bras tdest part of the grooves toward the denture.
Fig. 2. The impression material has been removed from the denture between the wings. The ends of the wings (A) have to be cut flush with the surrounding plaster. The border junction between the grooves and the wings is marked with China ink (Bj. This gives a visual coiltrol of the excess relining acrylic resin.
3. 4. 5. 6. model wings 7. (Fig.
Make the base of the denture uneven by grinding. Remove any impression material that may be adhering on the cast. Coat the cast with a separating medium. Cut the end of the resin wings and the area around it even by means of a trimmer so that a definite border between the plaster and the acrylic resin is obtained (Fig. 2, A). Mark the junction between the grooves and the wings by means of China ink 2, B) .
J. Pros. Dent. August, 1969
270 Christensen
Fig. 3. The denture is fixed to the cast during the curing process by three clamps. (A) The pivot on the clamp arm prevents it from slipping
on the cast.
APPLICATION AND FINISHING OF THE ACRYLIC RESIN RELINING MATERIAL 1. Control the wings and clamps for fit. 2. Moisten the acrylic resin base with monomer. 3. Fill the deepest part of the cast with cold-curing acrylic resin. 4. Fill the deepest part of the denture base with cold-curing acrylic resin. 5. Replace the denture on the cast. 6. Guide the wings against the bottom of the grooves by means of the fingers. 7. See that a liberal excess of cold-curing acrylic resin is between the cast and the denture. 8. Place the clamps on the wings. 9. Press the wings gently toward the bottom of the grooves until no space can be seen between the marked edges (Fig. 3). 10. Allow the acrylic resin to cure in a pressure cooker. 11. Separate the cast from the denture and finish it in the usual way. SUMMARY The wing relining method has been described. It represents a simple laboratory relining technique with an effective control for alterations in the vertical dimension. UNIVERSITY OF BERGEN SCHOOL OF DENTISTRY 5000 BERGEN, NORWAY
The wing
relining
Finn Tengs Christensen, Bergen University,
Editors
technique L.D.S.*
School of Dentistry,
Bergen, Norway
1 he wing relining method is a laboratory procedure in connection with relining technique. It is indicated where the denture has been used as an impression tray. The justification for the wing relining method is that alterations in the vertical dimension during the procedure are minimal. It is assumed that undercuts on the denture base have been removed before the impression procedure. THE SHAPE OF THE BORDER OF THE CAST 1. Extend the periphery (the land) of the cast to at least 10 mm. from the denture buccally and labially. 2. Make three grooves in the land: one groove in the front and one on each side, and make it before the denture with the impression in it is removed from the cast (Fig. 1) . 3. Extend the grooves to a width of about 10 to 15 mm. and let the sides of the grooves diverge with the broadest part of the grooves toward the denture (Fig. 1). 4. Remove the exposed impression material which is situated between the denture and the grooves. 5. Make the surface of the denture opposite the grooves uneven by means of grinding (Fig. 1) . 6. Isolate the plaster of the grooves with a separating medium. 7. Apply acrylic resin monomer on the uneven resin surface opposite each groove. 8. Fill the grooves with cold-curing acrylic resin so that the acrylic resin of the denture and the acrylic resin in the grooves (the wings) form a continuous unit. 9. Make flat the upper surface of the wings so that clamps can be screwed onto them (See Fig. 3). PREPARING THE CAST AND THE BASE OF THE DENTURE FOR THE APPLICATION OF THE ACRYLIC RESIN RELINING MATERIAL 1. Separate the cast from the denture. 2. Remove the impression material, stains, etc., from the denture. Read before the Norwegian Dental *Head of Prosthetic Department.
268
Association,
Bergen,
Norway.
Volume 22 Number 2
Wing
relining
technique
269
of the cast should be extended to III ,tke Fig. 1. By the wing relining technique, the periphery spa, :e for grooves and wings (A, B, C). The sides of the grooves should deviate with the bras tdest part of the grooves toward the denture.
Fig. 2. The impression material has been removed from the denture between the wings. The ends of the wings (A) have to be cut flush with the surrounding plaster. The border junction between the grooves and the wings is marked with China ink (Bj. This gives a visual coiltrol of the excess relining acrylic resin.
3. 4. 5. 6. model wings 7. (Fig.
Make the base of the denture uneven by grinding. Remove any impression material that may be adhering on the cast. Coat the cast with a separating medium. Cut the end of the resin wings and the area around it even by means of a trimmer so that a definite border between the plaster and the acrylic resin is obtained (Fig. 2, A). Mark the junction between the grooves and the wings by means of China ink 2, B) .
J. Pros. Dent. August, 1969
270 Christensen
Fig. 3. The denture is fixed to the cast during the curing process by three clamps. (A) The pivot on the clamp arm prevents it from slipping
on the cast.
APPLICATION AND FINISHING OF THE ACRYLIC RESIN RELINING MATERIAL 1. Control the wings and clamps for fit. 2. Moisten the acrylic resin base with monomer. 3. Fill the deepest part of the cast with cold-curing acrylic resin. 4. Fill the deepest part of the denture base with cold-curing acrylic resin. 5. Replace the denture on the cast. 6. Guide the wings against the bottom of the grooves by means of the fingers. 7. See that a liberal excess of cold-curing acrylic resin is between the cast and the denture. 8. Place the clamps on the wings. 9. Press the wings gently toward the bottom of the grooves until no space can be seen between the marked edges (Fig. 3). 10. Allow the acrylic resin to cure in a pressure cooker. 11. Separate the cast from the denture and finish it in the usual way. SUMMARY The wing relining method has been described. It represents a simple laboratory relining technique with an effective control for alterations in the vertical dimension. UNIVERSITY OF BERGEN SCHOOL OF DENTISTRY 5000 BERGEN, NORWAY