. Orthodontia, or malposition of the human teeth; its prevention and remedy . not be adpoted. I should certainly, if any-similar cases presented hereafter, even at twelve or thirteenyears of age, before attempting any other procedure, try thisfirst and thoroughly. In forming the chin piece for cases of this character the author is accustomed totake a plaster impressionof the chin and from thismake a model. The modelis then overlaid with apiece of trial-plate wax,from which, after beingvarnished, a mould in sandis obtained and a die and .counterdie made. Be-tween these a piece of softand heavy
. Orthodontia, or malposition of the human teeth; its prevention and remedy . not be adpoted. I should certainly, if any-similar cases presented hereafter, even at twelve or thirteenyears of age, before attempting any other procedure, try thisfirst and thoroughly. In forming the chin piece for cases of this character the author is accustomed totake a plaster impressionof the chin and from thismake a model. The modelis then overlaid with apiece of trial-plate wax,from which, after beingvarnished, a mould in sandis obtained and a die and .counterdie made. Be-tween these a piece of softand heavy brass plateis s t r u c k up anddrilled full of fashioningheavy piano wires tocross the plate andextend sufficientlybeyond to formhooks, they are soft-soldered to the brassplate and the lattercovered with blacksilk with a thicklayer of cotton b a t-ting laid between the ^^ two. The enlarged //??I . r size of the chin piece will admit of this. The piece thus padded will fit the chin and be soft enough to prevent pain when pressure is brought to bear upon PRACTICAL TREATMENT. 191 Fig. 145. A chin-piece devised and used by Dr. Kingsley* is siiownin Fig. 143. It is made of sheet copper (stiffened aroundthe edge with non-elastic steel wire accurately fitted to aplaster cast of the chin) padded, and covered with skeleton skull-cap, used in connection with the chinappliance by Dr. K. is made of leather and is shown inposition in Fig. 144. The Drs. Winner, of Wilmington, Del., have furnishedthe writer with modelsand description of acase somewhat similarto the foregoing ( and 146). In theircase, the patient was aboy fourteen years ofage, tall, slender, i)OS- sessing good general- health, but only fair physical strength. The models show that there was a bicuspid lacking on each side above, while below there still remained two tempo-rary molars. He stated that he had never had any teeth extracted by a dentist,so it is probable that the two bicuspids we
Size: 1562px × 1599px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1890, bookidorthodontiaormal00guil
