TIPS

FROM

OUR READERS

the material and mark these spots with a red pencil on the casting. 8. Remove the Extrude polyvinyl siloxane impression material from the casting (Fig. 2) and adjust the red marks in the casting with a high-speed handpiece and a small carbide bur. 9. Repeat steps 4 through 8 until the metal does not show through the Extrude material and there is a uniform thickness of impression material inside the restoration. The margins should pinch off the excessExtrude material. 10. Adjust the occlusion, stain and glaze the porcelain, polish the metal, and seat the casting with the cement of your choice. REFERENCES HT, Hobo H, Whitseft LD. Fundamental of fixed prcsthodontics. Chicago; Quintessence Publishing, 1981.

1. Shillingburg

2. Impression material removed from casting showing perforation (arrow).

Fig.

mouth. Have the patient exert biting pressure on the restoration with an orange stick interposed between the restoration and the opposing tooth. Do not remove excess Extrude material from margins. 7. Remove the restoration from the tooth. Usually the material sticks to the restoration. Note perforation in

Implant James

DeBoer,

denture DDS,a

modification

and Douglas

Verhoef,

2. Kaiser DA, Wise HB. Fitting cast gold restorations with the aid of disclosing was. J PROSTHET DENT 1980;43:227-8. 3. Troendle GR, Troendle KB. The film thickness of four disclosing media. J PROSTHET DENT 1991;65:856-7. 4. American National Standards Institute/American Dental Association specification No. 8 for dental zinc phosphate cement. Chicago:1987. Reprint requests to: DR. G. ROGER TROENDLE UNIVERSITY OF TEXAS HEALTH SCIENCE CENTER AT SAN ANTONIO DENTAL SCHOOL 7703 FLOYD CURL DR. SAN ANTONIO, TX 78284

with light-activated

denture

resin

DDSb

Combined Prosthodontic Residency Training Program, U.S. Army Dental Activity, Fort Bliss, Tex. During the treatment of patients with osseointegrated implants, the provisional restoration of the dental arch after abutment placement is often a challenge. The patient desires a functional restoration as soon as possible, and the dentist wishes to make an interim restoration requiring minimal clinical time and little or no maintenance as the patient wears it while the definitive prosthesis is being made. A reline procedure using visible light-activated denture resin may provide a solution to this problem.

The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or reflecting the views of the Department of the Army. “Colonel, U.S. Army, DC; Assistant Director. bLieutenant Colonel, U.S. Army, DC; Senior Resident.

Fig.

10/4/41124

space for the implant abutments and reline material.

984

1.

Existing

mandibular

DECEMBER

denture

1992

relieved

VOLUME

to provide

68

NUMBER

6

TIPS

FROM

OUR READERS

Fig. 2. Border-molded

mandibular

PROCEDURE 1. After the tissues have healed adequately following abutment placement, relieve the patient’s existing denture to allow seating over the abutments (Fig. 1). 2. Paint bonding agent in the denture. 3. Place light-curing resin in the denture. 4. After lubricating the abutments, seat the denture in the patient’s mouth and border mold it. The material will soften at mouth temperature, but because of the high viscosity of the resin, the border molding procedure requires an extended period of time (Fig. 2). 5. Remove the denture from the patient’s mouth and remove the excess resin. 6. Repeat the border molding and trimming until satisfactory tissue adaptation is obtained. 7. Cure the resin in the mouth for a few minutes with an intraoral light-curing unit to provide enough rigidity to prevent the resin from flowing.

THE

JOURNAL

OF PROSTHETIC

DENTISTRY

Fig. 3. Completed

denture.

mandibular

denture

reline.

8. Remove the denture from the mouth, coat it with air barrier solution, and complete the curing in a processing unit. 9. Relieve the resin adjacent to the implant abutments to avoid frictional fit and tissue contact in the healing incision portion of the soft tissue. 10. Place the denture in the mouth and examine it for tissue and occlusal contacts. Make adjustment as necessary. 11. Polish the denture and dismiss the patient with the refitted denture (Fig. 3). Occasionally, the patient’s mucosa may be so sensitive that a subsequent reline with a soft reline material is necessary. Reprint

requests

JAMES DEBOER, USA

to: DDS

DENTAC

FT. BLISS, TX

79920

985

Implant denture modification with light-activated denture resin.

TIPS FROM OUR READERS the material and mark these spots with a red pencil on the casting. 8. Remove the Extrude polyvinyl siloxane impression mater...
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