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318 PATHOLOGY OF THE HAKD TISSUES OF THE TEETH.

Putrefaction, 141. Rose, Carl, studies of dentinal fibrils, 146.
Putrefactive decomposition and disease of studies of saliva, 131.
peridental membrane as result of ab- Eottenstein and Leber, re dental caries,
sorption of interproximal gum tis- 64.
sue, 103. Roughening of surface of decayed area,
as result of interproximal wear, 106. 101, 102.
Pyorrhea alveolaris, 186. Rubber bands for cleaning teeth, 158.
Eapidity of progress of caries of dentin, SaHva, 132.
72. effect of, favoring deposits on the
Hare position of lingual decay in a cuspid, teeth. 111.
112. examination of crystals, 130.
Reaction of the mucus of the mouth, 132. salts diaUzed from, 69.
Reaction of the saliva, 132. studies of, by Dr. Michaels, 129.
Recession of gums, 186. Salts dialized from saliva, 69.
caries in cases of, 230. Scarlet fever as cause of atrophy, 13.
treatment by filling, 231. Secondary extensions gingivally of proxi-
treatment with silver nitrate, 231. mal decays, 101.
Recessional line of pulpal horn, 95. Secretion of diseased glands as cause of
Recognition of susceptibility and immu- erosion, 49, 53.
nity to dental caries, 137. Selection of filling material, 198.
Recurve of line of dento-enamel junction Self-limiting diseases, 117.
in atrophy, 18. Sensation in dentin, 146.
Redness, general, of gingivae, 185. Sensitiveness, caused by dental caries, 144.
Regnard, re dental caries, 63. in erosion, 40, 58.
Relation of form of proximal decays to of normal dentin, 145.
area of near approach of surfaces of of peridental membrane, 168.
the teeth, 86. thermal, 219.
Relation of growth and shedding of the Separating files, results of use of, 103.
deciduous teeth to their treatment, Shedding and growth of deciduous teeth
237. in relation to their treatment, 237.
Relation of gum margin to beginning of Shortening of teeth in atrophy, 17.
decays of enamel, 87, 89. Sialo-semeiology, 129.
Relation of occlusion to localization of Signs of susceptibility and immunity to
caries, 85. dental caries, 137.
Relation of proximal surfaces of teeth to Silver nitrate, treatment of decays of de-
each other, 86. ciduous incisors and cuspids, 248.
Relation of restoration of contact and caution re use of, 251.
mesio-distal breadth to recurrence of treatment of caries in eases of reces-
caries, 90. sion of gums, 231.
Relation of width of embrasures to proxi- treatment of occlusal decays of decidu-
mal decays, 87. ous molars, 253.
Repair in human teeth, no process of, 6. Simple gingivitis, 186.
Repair of absorptions of portions of teeth, Slowness of progress of caries of dentin,
127. 72.
Results of absorption of interproximal Smith's case of general deformity of
gum tissue, 103. enamel, 34.
Results of interproximal wear, 104. Smooth surface cavities, see Gingival
Retained deciduous teeth, 245. third cavities. Proximal surface
Retzius, lines of, in atrophy, 14, 16. cavities.
Robertson, re dental caries, 62. Softened dentin, filling over, 205.
Root, atrophy of, 20. Softness of teeth, 118.
Root canals of teeth, apical ends open to cutting instruments, 122.
during childhood jieriod, 275. Soft tissues of mouth, examination of,
Root fillings, in deciduous teeth may be 179.
made when, 239. Specimens showing injury to enamel,
relation of age of patients to success, method of preparing, 83.
276. Spreading of dental caries, along dento-
Roots of permanent teeth, growth of, 258. enamel junction, 69.
Roots of teeth well developed in atrophy, around the teeth, 113.
11. on smooth surfaces, 77.
Ropy saliva, 135. on surface of enamel, 75, 113, 114.
elTect of, on dental caries, 136. Staphylococcus, cause of caries, 73.