. Dental may retain in his mind the approximate form by studying theimpression in the wax before removing it. If the hole includesa large portion of the occlusal surface the cast inlay methodmay be adopted. In the first instance make a matrix of thecavity and flow gold into it, building it up to the occlusalform as accurate as you can. In the second instance cast agold inlay, place it in the cavity and attach to margins withsolder. This will provide bulk of metal to insure the crownfrom failure due to the first cause of the hole. The occlusalsurfaces of gold crowns are usually made t
. Dental may retain in his mind the approximate form by studying theimpression in the wax before removing it. If the hole includesa large portion of the occlusal surface the cast inlay methodmay be adopted. In the first instance make a matrix of thecavity and flow gold into it, building it up to the occlusalform as accurate as you can. In the second instance cast agold inlay, place it in the cavity and attach to margins withsolder. This will provide bulk of metal to insure the crownfrom failure due to the first cause of the hole. The occlusalsurfaces of gold crowns are usually made too thin.—Review. A METHOD TO STRENGTHEN AND SUPPORT ALOOSE TOOTH. O. H. Simpson, Dodge City, Kansas. For several years I have been employing in m)r practicea method that has been very satisfactory to me, and is the onlything I know of that will remedy the condition, where a shellcrown proximates a loose tooth, and food continues to fillthe interspace, thus irritating the gum, as is so often the case Fig. i Fig. 2. between first and second, and second and third upper same result can be accomplished by crowning both teethand soldering the crowns together; although I have madecrowns fit so tight between teeth that they were very uncom-fortable, and found that in a short time the food would work 842 THE DENTAL SUMMARY between them ; but in case the adjoining tooth does not needcrowning, there is no other method than the following that 1know of: After the shell crown is made, solder a spur of 24k. gold onthe proximal surface of the crown, as shown in the model(Fig. 1). Place the crown in place on the stump, and bend thegold spur back over the grinding surface of the loose remove and reinforce with solder. The result isshown in Fig. 2.—Dental Brief. NEW STERILIZER. At a meeting of the Societe Odontologique de Geneve,Mr. Gardet introduced to the profession a new sterilizer forhypodermic syringes and also mentioned this research anddiscovery of an ideal l
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