The Dental cosmos . Fig. 30. OHUM J | lli„,u1 in-^l ilil V.^ oooooOOOO TECHNIQUE. The technique is well illustrated byFig. 28. The rod is then placed in thegage, as Fig. 29, nicked on each side ormarked by pencil, and cut from the rod. —a, cavity; b, depth of bur penetration; c, depth to which the inlay should go, and d, the finished inlay. The inlay is ground on the base so asnot to touch the floor of the cavity. Thisinsures perfect marginal closure when in- MITCHELL. THE PORCELAIN ROD IN DENTISTRY. 39 serted, the inlay fitting perfectly, and ifall be correct, theoretically at least we Fig

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The Dental cosmos . Fig. 30. OHUM J | lli„,u1 in-^l ilil V.^ oooooOOOO TECHNIQUE. The technique is well illustrated byFig. 28. The rod is then placed in thegage, as Fig. 29, nicked on each side ormarked by pencil, and cut from the rod. —a, cavity; b, depth of bur penetration; c, depth to which the inlay should go, and d, the finished inlay. The inlay is ground on the base so asnot to touch the floor of the cavity. Thisinsures perfect marginal closure when in- MITCHELL. THE PORCELAIN ROD IN DENTISTRY. 39 serted, the inlay fitting perfectly, and ifall be correct, theoretically at least we Fig. 31. a b c. should have no cement line. The cementis cut off as by a sharp knife. The base of the inlay is grooved, for Fig. 34.

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