Principles and practice of operative dentistry . e cavity at the bottom or by forming smallretaining-pits in the extremities. Cohesive foil orcrystal gold are the best for filling this class of cavi-ties. The filling should be started in one of the ex-tremities, care being taken that the first piece of goldis securely anchored and the balance of the fillingbuilt upon this. Many operators finish such fillingswith platinum-gold foil, as the color is less conspicuousthan pure gold. Figs. 402 and 403 show the locationof fillings of this class. Cavities occurring upon the lingual surface of theinci
Principles and practice of operative dentistry . e cavity at the bottom or by forming smallretaining-pits in the extremities. Cohesive foil orcrystal gold are the best for filling this class of cavi-ties. The filling should be started in one of the ex-tremities, care being taken that the first piece of goldis securely anchored and the balance of the fillingbuilt upon this. Many operators finish such fillingswith platinum-gold foil, as the color is less conspicuousthan pure gold. Figs. 402 and 403 show the locationof fillings of this class. Cavities occurring upon the lingual surface of theincisors are generally confined to the laterals, and arethe result of developmental defects, as shown in theimperfect closure of the pit or fissure at the base ofthe cingulum. These cavities are usually small, andare readily filled with a narrow ribbon of non-cohesivefoil and finished with cohesive; or the entire cavitymay be filled with a narrow ribbon of cohesive foil. Such a filling is shownin Fig. 404. Fig. 401. Fig. 400. ^ Johnson lever
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdentist, bookyear1920
