. The teeth in health and disease . r four or five months thisspace is occupied by the canines eruption of the second molars shortly afterthe second year completes the temporary set. ifttm- -^ *4r W m; ft i= #;; fit w Fig. 4.—Illustrates the Temporary Teeth on the left side. 1-1. Central Lateral Cuspids or First or anterior Second or posterior molar. The order of eruption of temporary teeth istabulated by Coleman as under— Group. Months. 1. Lower central incisors .... 7Duration of eruption one to ten two to three mon
. The teeth in health and disease . r four or five months thisspace is occupied by the canines eruption of the second molars shortly afterthe second year completes the temporary set. ifttm- -^ *4r W m; ft i= #;; fit w Fig. 4.—Illustrates the Temporary Teeth on the left side. 1-1. Central Lateral Cuspids or First or anterior Second or posterior molar. The order of eruption of temporary teeth istabulated by Coleman as under— Group. Months. 1. Lower central incisors .... 7Duration of eruption one to ten two to three months. 34 THE TEETH Group. Months. 2. Upper central and lateral incisors . 9 Duration of eruption four to six two months. 3. Lower lateral incisors . . .12First molars ...... 14 Duration of eruption one to two four to five months. 4. Cuspidati (canines) . . .18 Duration of eruption two to three three to five months. 5. Second molars ...... 20 Duration of eruption three to five Fig. showing the two sets of teeth (temporary and per-manent) in the jaws of a child of six years. Sixth-year molarsare already in position, the rest of the permanent teeth in vari-ous stages of development. FIRST DENTITION 35 Difficulties of the First Dentition. Under the most favourable circumstancesthe teeth may appear one after another at theusual time, with so little apparent disturbanceto the individual, that their presence may beonly accidentally discovered. In many cases, however, the condition ofmatters is not so favourable. For some timeprevious to the eruption of each tooth thechild becomes fretful and irritable, and thegums appear hot and swollen and tender; therubbing, evidently hitherto grateful, now causespain and resistance. Diarrhea, the result of intestinal irritation, isnot uncommon. A troublesome cough, likewisethe result of irritation conveyed to the respi-ratory tract, often sets in with the eruptionof each tooth and, like th
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