. The Dental cosmos. before and after opening suture. eh or teeth consists of an arm solderedto the expansion arch in front of the nutand sliding into a short tube attachedto the large buccal tube, as shown in modification of this device in F allowsthe arm to rest on a curved spur attachedto the buccal tube. Another variationfrom this method is shown in G. the armextension being retained by a short cross- 524 THE DENTAL COSMOS. bar of metal above the buccal tube, allow-ing of the bending outward of the armextension so as to caus$ a lateral method of moving the anchorteeth bo
. The Dental cosmos. before and after opening suture. eh or teeth consists of an arm solderedto the expansion arch in front of the nutand sliding into a short tube attachedto the large buccal tube, as shown in modification of this device in F allowsthe arm to rest on a curved spur attachedto the buccal tube. Another variationfrom this method is shown in G. the armextension being retained by a short cross- 524 THE DENTAL COSMOS. bar of metal above the buccal tube, allow-ing of the bending outward of the armextension so as to caus$ a lateral method of moving the anchorteeth bodily is embodied in Dr. Barnesmodification of the Ainsworth appliancein the use of vertical tubes on molarbands, as shown in an appliance for open-ing the maxillary suture, Fig. 32. These various combinations with thebuccal tubes effect the bodily movementof the anchor teeth only, and in orderto secure the bodily movement of theother teeth in the lateral halves of themaxilla, further reinforcement of these Fig. Radiograph of the same case before openingsuture. teeth through the proper application offorce becomes necessary; but the limitsof this paper require that further elabora-tion other than exhibiting the main prin-ciple of bodily movement of the teethshould not be entered into. An insight into this part of the tech-pique of arch expansion, which illustratesthe manner in which the mechanicalprinciples involved should be taken ad-vantage of to produce the most extensiveinfluence on the development of the den-tal and maxillary arches, serves to stillfurther confirm the theory that this de-velopmental influence may, by a properunderstanding of the technique and acorreci application of force, he made toextend beyond the dental and maxillaryarches into the more remote regions ofI he internal face. POSSIBILITIES OF DEVELOPMENT FOLLOAV-ING ARCH EXPANSION. Internally through the sphenoid boneand its many articulations, resting as itdoes upon the superior maxillary bones,the li
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentist, bookyear1912
