. The science and practice of dental surgery. y be re-soldered to lie incontact with the approximal teeth again, whensmall sections of rubber may once more be usedand gradually increased in size as the toothmoves. Wlien it is in its correct position theband is again removed, and the spurs arere-soldered to be in contact with the adjoiningteeth, thus converting the appliance into a veryeflScient retaining apparatus. The spurs maybe lengthened to reach across two approximalteeth on each side, if one on each side doesnot offer sufficient resistance to rotate the toothwithout its fellows moving. (
. The science and practice of dental surgery. y be re-soldered to lie incontact with the approximal teeth again, whensmall sections of rubber may once more be usedand gradually increased in size as the toothmoves. Wlien it is in its correct position theband is again removed, and the spurs arere-soldered to be in contact with the adjoiningteeth, thus converting the appliance into a veryeflScient retaining apparatus. The spurs maybe lengthened to reach across two approximalteeth on each side, if one on each side doesnot offer sufficient resistance to rotate the toothwithout its fellows moving. (2) Removable Appliances.—As a generalrule these are not efficient for rotating teeth. CHAPTER IX ABNORMALITIES OF POSITION—TREATMENT (continued) THE HEAD-GEAR AND TRACTION BAR This is an adjunct to the expansion bow,especially valuable when the upper incisorshave to be moved lingually or the upper caninesor the upper molars have to be moved distally. The head-gear consists of a cross-bar andskull-cap. (See Fig. 328.) The former (see
Size: 1681px × 1486px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
