. The Dental cosmos. No. 22. No. 23. No. 24. No. 25. from which the advance is supposed tohave taken place culminating in themodern form of detached-post Fig. 3 shows single tube rods. A, Side , End view. crowns. In fact, some of the illustra-tions show transition types which aremarkedly retrograde—points to be notedwith regard to these are the size andposition of the tubes and the deficiencyin the thickness of the porcelain uponthe lingual surface; but the subject willbe dealt with in detail later. Meanwhileattention is directed to Fi^. 1. showing S. S. White Tooth Catalog, pag
. The Dental cosmos. No. 22. No. 23. No. 24. No. 25. from which the advance is supposed tohave taken place culminating in themodern form of detached-post Fig. 3 shows single tube rods. A, Side , End view. crowns. In fact, some of the illustra-tions show transition types which aremarkedly retrograde—points to be notedwith regard to these are the size andposition of the tubes and the deficiencyin the thickness of the porcelain uponthe lingual surface; but the subject willbe dealt with in detail later. Meanwhileattention is directed to Fi^. 1. showing S. S. White Tooth Catalog, page 32. 602 THE DENTAL COSMOS. photographic sections of some well-knowncrown forms. With regard to the manufacture ofporcelain teeth in general, and not totube teeth in particular, while makers indeed, might be termed tougher, orless brittle. One of the reasons for thistoughness was that the prevailing prac-tice was to allow the teeth to cool downin the muffle until stone cold; from Fig. 4. A B Shows—A, Pin in correct position, b, Pin too near edge of plate. claim that their teeth and crowns arebetter made than ever before, those ofus who have had the op
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Keywords: ., bookcentury1900, bookdecade1910, bookiddent, booksubjectdentistry
