Dental cosmos . that would have necessitated removing the piece, which was undesir-able, as it was important to maintain the space gained by it betweenthe lateral incisor and first bicuspid. After the space was enlarged to receive the cuspid it moved veryrapidly, and in its downward course came in contact with the bar orscrew, which was then removed and a curved one substituted (Fig. 5);which allowed the cuspid to pass inside, thus allowing it to continueon downward into the space prepared for it. The most remarkablefeature of this operation was the quickness with which all the teeth Fig.
Dental cosmos . that would have necessitated removing the piece, which was undesir-able, as it was important to maintain the space gained by it betweenthe lateral incisor and first bicuspid. After the space was enlarged to receive the cuspid it moved veryrapidly, and in its downward course came in contact with the bar orscrew, which was then removed and a curved one substituted (Fig. 5);which allowed the cuspid to pass inside, thus allowing it to continueon downward into the space prepared for it. The most remarkablefeature of this operation was the quickness with which all the teeth Fig. responded to the pressure as soon as the force was brought to bear onthe lateral incisor. When the median line was brought to its normalposition and the teeth in their proper place, the fixture was allowed toremain as a retaining piece for about three months. This case was finished about two years ago, and since that timethere has been absolutely no change in the position of the teeth, andtheir regularity is one of the noticeable features of the mouth. (SeeFig. 6.) 45o THE DENTAL COSMOS. CORRESPONDENCE. Dr. Arthurs Use of Cobalt in Root-Filling. To the Editor of the Dental Cosmos : Sir, — In your issue for May, on page 366, there is published thestatement that Gorgass Dental Medicine says the late Dr. RobertArthur preferred cobalt as a devitalizing agent [for dental pulps]to arsenious acid, being of the opinion that less irritation followed itsaction and consequently greater immunity from periosteal inflamma-tion. This extract must have been misquoted,* since the irritation follow-i
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Keywords: ., bookauthor, bookcentury1800, bookdecade1890, booksubjectdentistry
