. The science and practice of dental surgery. (on both sides).5. Fixed Appliances. Anchorage : Simple and Reciprocal.—This isreadily done by ligaturing these teeth to thebow, which must be a short distance awayfrom them. If, when these teeth are m contactwith the bow, they are not ^\?ide enough, thebow must be removed and bent, so as to enablethem to be moved further. All the precautionsmentioned on p. 179 must be observed. 184 6. Removable Appliances.—By extendingthe plate referred to in paragraph 2 to reach tothe lingual surfaces of these teeth. If all theteeth from first molar to canine are
. The science and practice of dental surgery. (on both sides).5. Fixed Appliances. Anchorage : Simple and Reciprocal.—This isreadily done by ligaturing these teeth to thebow, which must be a short distance awayfrom them. If, when these teeth are m contactwith the bow, they are not ^\?ide enough, thebow must be removed and bent, so as to enablethem to be moved further. All the precautionsmentioned on p. 179 must be observed. 184 6. Removable Appliances.—By extendingthe plate referred to in paragraph 2 to reach tothe lingual surfaces of these teeth. If all theteeth from first molar to canine are to bemoved, the application of the force should bebetween the first and second premolars. (SeeFig. 274.) In the lower jaw clasps are not essential,but a cleat should be fixed in the plate to engagethe lingual sulcus of the first molar on each side,to prevent the plate sinking into the soft tissues.(See Fig. 275.) The movement of the molarswill be less satLsfactory than in the upper jaw;the plate should therefore be made as rigid as ®. Fig. 2S8.—Upper biw arranged to expand the arch on theright side only; the left side is vised as anchorage, thesource of which is the molar, premolars, and canine, thefirst of these through its clamp-band with oval buccaltube, which permits only translational movement, andthe remainder through ligatures; the bow is bent torest quite close to these teeth. On the right side tliemolar moves by inclination, the medium of attachmentto the bow being a round buccal tube, which permitsof this type of movement; when the molar is in itscorrect position, the remaining teeth are ligatured tothe bow and brought to their positions one by one. (o) Roimd tube in section. (b) Oval tube in section. possible; even then it may be necessary toresort to a fixed appliance if considerableexpansion is desired. (i) and (ii) Molars, Premolars, and Canines, onone side only. 3 and 7. Fixed Appliances. Anchorage: Simple Beinforced, and Resistanceto Translation.—Three
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
