A procedure for restoring proximal contact surfaces of cast gold restorations with solder

Our plain-English summary of A procedure for restoring proximal contact surfaces of cast gold restorations with solder, by P.M. Kimondollo (The Journal of Prosthetic Dentistry, 1991).

The study

• Author: P.M. Kimondollo
• Journal: The Journal of Prosthetic Dentistry
• Published: 1991;66(3):408-9
• Cited by: 1 article, as counted by NIH iCite
• Read it: PubMed · Publisher

Abstract

Faulty contacts on restorations can be very damaging to the patient's dentition. Occasionally they are not corrected on a new restoration because of the length of time required for the procedure. The method described here is fast, simple, and protects the occlusal surfaces and margins of the restorations from damage while adding to the contacts with solder.

In plain English

This short article, by a dental technology instructor at Southern Illinois University, described a laboratory technique and was not a study of asbestos or of health. The author explained that side contacts of cast gold crowns can be lost through excessive polishing or poor contact during waxing. Uncontrolled solder can damage delicate margins or run onto the biting surface. In the method, the technician applied an antiflux in a rough circle around the faulty contact. A 2 to 3 cm length of wet "asbestos substitute" was rolled and packed inside the crown, overlapping the margins by about 3 mm, to help control the solder. After heating with a gas-air burner and micro gas torch and adding solder, the contact was adjusted on the working cast, or in the mouth if the cast's stone teeth were inaccurate or damaged. The article did not say what the asbestos substitute was made of. It reported no patients, experimental measurements or test results. The author called the procedure relatively fast and said it protected the margins and biting surface without soldering investment.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: Description of a dental laboratory technique (no study data)
• Exposure: Not an exposure study. A wet 'asbestos substitute' (composition not stated) was packed inside the cast gold crown, together with an antiflux, to control the flow of solder.
• The authors' conclusion: The author stated that the procedure is relatively fast and protects the margins and occlusal (biting) surface from the added solder without using soldering investment.
• Limitations the authors state:
  • The author noted that when the adjacent stone teeth on the working cast are not accurate or are damaged, the restoration contacts must be adjusted in the mouth instead of on the cast.

Related studies

• The fit of gold-alloy full-crown castings made with pre-wetted casting ring liners — E.F. Morey, R. Earnshaw (1992)
• The accuracy of occlusal cusp height in cast crowns — J. Takahashi, M. Okazaki, et al. (1983)
• Dimensional accuracy of small gold alloy castings. Part 4. The casting ring and ring liners — E.F. Morey (1992)
• Dimensional accuracy of small gold alloy castings. Part 1. A brief history and the behaviour of inlay waxes — E.F. Morey (1991)
• Full-crown castings made with water-saturated and dry casting ring liners — F. Keyf, G. Erman (2000)
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Browse more research in The Journal of Prosthetic Dentistry, or return to medical research.