General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . otj \H~ H E o 5 ?J3-- >. ~ u U - CM 5 uu - -z 3 —la ^ ^^ EEEE C S V rt _rt 3 3 . o. +4 d c d^j d *i d c - E, - a *j| —-r m ?S-ra-o — — Mtfl ?J/ v; — ^ N CM rHNWr^ro S ~ 1) m ~ V o — a es u at ?s _ -= 3 u > a> * > 3 ?.J 3-D OJ T3 3 a D T3 to a> D V -S h ^ s > c5 o-% 1/ u ? K n U v rt -j. 0 HI V - §? -(J ~- 5 u » * o ^ 5 u - u - - 1> u o 4J nt ~ fi — j: V ?~ V — rt — UOpiJUap JU3UBIUJ3J BYPOPLASIA, MICROSCOPIC AND MACROSCOPIC 255 both of
General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . otj \H~ H E o 5 ?J3-- >. ~ u U - CM 5 uu - -z 3 —la ^ ^^ EEEE C S V rt _rt 3 3 . o. +4 d c d^j d *i d c - E, - a *j| —-r m ?S-ra-o — — Mtfl ?J/ v; — ^ N CM rHNWr^ro S ~ 1) m ~ V o — a es u at ?s _ -= 3 u > a> * > 3 ?.J 3-D OJ T3 3 a D T3 to a> D V -S h ^ s > c5 o-% 1/ u ? K n U v rt -j. 0 HI V - §? -(J ~- 5 u » * o ^ 5 u - u - - 1> u o 4J nt ~ fi — j: V ?~ V — rt — UOpiJUap JU3UBIUJ3J BYPOPLASIA, MICROSCOPIC AND MACROSCOPIC 255 both of the cementing substance (Figs. 117, 118, 11!), and 120).Two interesting specimens of marked enamel hypoplasia areshown in Pigs. 11! and 120. As previously stated, the histologicdefect may be so intense as to give rise to a macroscopic defectvisible on the external enamel surface, such being the case withthe specimen under consideration. In Fig. 120 a disturbance inthe disposition of the enamel rods has occurred. The rods, in-stead of following the perpendicular direction to the surface, as. -b Fig. 119.—Hypoplasia of the enamel producing an external macroscopic defect on thelabial surface of an incisor. At o is observed the area of disturbed enamel rod calci-fication; the enamel rods that are present are of a low grade of calcification and stuntedin their growth and the interprismatic substance is not present in sufficient enamel is seen at b and b: normal dentin at c and c, and defects in the calci-fication of the dentin in the form of interglobular spaces at d. is the case in approximal surfaces, appear wavy and very irregu-lar in their course and faulty in their calcification. The moremarked cases show a deficiency or absence of enamel, and thesurface of the tooth is irregular and (Fig. 119.) Cases of complete or partial absence of enamel are also occa-sionally encountered. This form of exaggerated enamel hypo- 3Bennett: Dental Su
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpathology, bookyear19
