. The principles and practice of dental surgery. or, by the removal of a bicuspid from each side ofthe jaw. ^ .| In describing the treatment of irregularity, we shall com-mence with an incisor occupying an oblique or transverse posi-tion across the alveolar ridge; so that the cutting edge of thetooth, instead of being in a line with the arch, forms an anglewith it of from forty to ninety degrees. This variety of devia-tion is rarely met with in both centrals, but often occurs withone. Some dentists have recommended in cases of this sort,•when the space between the adjoining central and lateral
. The principles and practice of dental surgery. or, by the removal of a bicuspid from each side ofthe jaw. ^ .| In describing the treatment of irregularity, we shall com-mence with an incisor occupying an oblique or transverse posi-tion across the alveolar ridge; so that the cutting edge of thetooth, instead of being in a line with the arch, forms an anglewith it of from forty to ninety degrees. This variety of devia-tion is rarely met with in both centrals, but often occurs withone. Some dentists have recommended in cases of this sort,•when the space between the adjoining central and lateral incisoris equal to the width of the deviating tooth, to turn the latter inits socket with a pair of forceps, or to extract and immediatelyreplace it in its proper position. It is scarcely necessary tosay, that if a tooth is extracted or turned in its socket, the ves-sels and nerves from which it derives nourishment and vitalityare severed; hence, though its connection with the alveolus may TREATMENT OF IRREGULARITY OF THE TEETH. 151 Fig. be partially re-established, it will be liable to act as a morbidirritant, and be subject to inflammation from comparativelyslight causes. The tooth, however, may be brought to its proper position,without incurring the riskof injury, by accuratelyfitting a gold ring or band,with knobs on the labialand palatine sides; to eachof these a ligature shouldbe attached. Thus fasten-ed to the ring, each endshould be carried back, oneon either side, in front andbehind the arch, and se-cured to the bicuspids asrepresented in Fig. 53, so as to act constantly upon the irregular tooth. The ligaturesshould be renewed from day to day, until the tooth assumes itsproper position. Should the space not be sufficient to permitthe use of the band, the method practiced by Mr. Tomes, as shownin Fig. 54, will be found very effective. A plate is fitted to the insideof the arch, and a band carried infront and soldered to projectionsfrom the plate, which pass be-t
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