Principles and practice of operative dentistry . Fig. EXTRACTION OF TEETH. 681 THE SELECTION OF THE PKOPER INSTRUMENTS FOR THE EXTRACTIONOF THE VARIOUS CLASSES OF TEETH, THEIR PROPER ADJUSTMENT,AND THE KIND AND DIRECTION OF THE FORCE APPLIED. The teeth, from the stand-point of their proper extraction, may bedivided into seven classes, according to the number and the anatomic formof their roots. The first class includes the superior central and lateral incisors, whichhave single, cone-shaped roots. The second class embraces the inferior central and lateral incisors,which have single, cons
Principles and practice of operative dentistry . Fig. EXTRACTION OF TEETH. 681 THE SELECTION OF THE PKOPER INSTRUMENTS FOR THE EXTRACTIONOF THE VARIOUS CLASSES OF TEETH, THEIR PROPER ADJUSTMENT,AND THE KIND AND DIRECTION OF THE FORCE APPLIED. The teeth, from the stand-point of their proper extraction, may bedivided into seven classes, according to the number and the anatomic formof their roots. The first class includes the superior central and lateral incisors, whichhave single, cone-shaped roots. The second class embraces the inferior central and lateral incisors,which have single, considerably flattened, cone-shaped roots. The third class comprises the superior and inferior cuspids, whichhave single, very long, slightly flattened, cone-shaped roots. The fourth class includes the superior and inferior bicuspids, whichhave single, sometimes bifurcated, flattened, cone-shaped roots. The fifth class comprises the superior first and second molars, whichhave three cone-shaped roots,—two buccal and one lingual. The sixth class embraces the
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdentist, bookyear1920
