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INDEX. 319

straight enamel, 122. Tooth brush, injury by use of, 157.
Streptococcus bucealia, 13!). use of, 155.
Streptococcus, cause of caries, 73. Tooth pick, 158.
Streptococcus continuosum, 140. Tooth powders, 157.
Streptococcus media, 139. Treatment, of atrophied teeth, 25.
as cause of caries, 73. of children's teeth, 235.
Subperiosteal bone, 126. of erosion, 57.
Succedaneous teeth, 259. of dental caries, 188.
Sugar, dialized and crystallized, 69. of interproximal wear, 105, 106.
Sulphocyanids in saliva, influence of, 131. of sensitive dentin, 148.
Superficial spreading of caries around an- of sensitiveness in erosion, 58.
gles of teeth, 1 13. of tenderness of peridental membrane,
effect of falling away of enamel rods 169.
on, 89. of thermal sensitiveness, 151.
on smooth surfaces, 77. Tubules of dentin, disappearance of divi-
on surface of enamel, 75, 113, 114. sion walls in caries, 71.
relation of artificial cleaning to, 89.
Surfaces of teeth cleaned by mastication,
Underwood and Miles, re dental caries, 64.
85. Use of teeth in relation to force of bite,
Surfaces of teeth not cleaned by mastica- 162.
tion, 85. Utility of studies of dental caries, 142.
Susceptibility to dental caries, 115, 130.
changes in, 118.
Variations, as to deposits from saliva,
influence of sulphocyanids in saliva,
133.
131.
in quantity of saliva, 131.
recognition of, 137.
in salts of saliva, 131, 133.
Swelling of decayed area of enamel, 101.
in viscosity of saliva, 133.
Swelling of tubules in caries of dentin, 71.
Viscosity of saliva, 135.
Syphilis as cause of atrophy, 7, 11, 13.
effect of, on dental caries, 136.
Systemic conditions, affecting dental
Vision, of the dentist, 173.
caries, 115, 121.
Vital phenomena in caries, 144.
Vitality of the teeth, effect of, on dental
Tape for cleaning teeth, 158. caries, 144.
Technical procedures in treatment of
caries, 4.
Teeth, comparison of physiological con- Walkhoff, re atrophy, 19.
Washes, mouth, 157.
ditions of, with bone, 191.
Water, removal of, from cavity walls, 192.
examination of, 178.
Telescoping of enamel in atrophy, 15. Wedge-shaped areas in erosion, 43.
Temperature, in dental examinations, 178. Wedl, re atrophy, 19.
White enamel, 35.
Temporary teeth, see Children 's teeth.
Tenderness of carious cavities cause of White spots in enamel, 34.
tenderness of peridental membrane, Whooping cough as cause of atrophy, 13.
169. Williams, J. Leon, studies re dental caries,
Tenderness of peridental membrane, 128.
causes of, 169.
X-ray, use of, in treatment of deciduous
Tests of force of bite, 163.
Tetrogenous, 140. teeth, 246.
Thermal sensitiveness, 150, 219.
of peridental membrane, 184. Zigzig coccus, 140.
Thermometer, clinical, in dental examina- as cause of caries, 73.
tions, 178. Zoogloea aggregations, in relation to gin-
Tomes, John, re dental caries, 63. gival third decays in buccal and la-
hyaline area of, 93, 95, 108. bial surfaces. 111.
re etiology of erosion, 50. Zsigmondy, re atrophy, 19.