Un pratico trattato sulla meccanica odontoiatria . t, in ragione delle bande e tubi essendo rigidlyattached ai denti di ancoraggio, il ribaltamento è impossibile, e pressione isexerted ugualmente su entrambe le parti superiore e inferiore del fractureas sono disegnate insieme con la vite. Apparecchi per la correzione di FRACTURED MAXILLAE. 429 Questo dispositivo può essere applicato in qualsiasi località in sia della mascella, providedsuitable denti di ancoraggio non sia troppo lontana dalla linea offracture. La vite può essere piegato per ospitare la curva dell'arco, dovrebbe la frattura si verificano nella regione della cuspide. Queste bande, tubi,

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A practical treatise on mechanical dentistry . t, by reason of the bands and pipes being rigidlyattached to the anchor teeth, tipping is impossible, and pressure isexerted equally upon both parts (upper and lower) of the fractureas they are drawn together by the screw. APPLIANCES FOR THE CORRECTION OF FRACTURED MAXILLAE. 429 This device may be applied in any locality in either jaw, providedsuitable teeth for anchorage be not too far remote from line offracture. The screw may be bent to accommodate the curve ofthe arch, should the fracture occur in the region of the cuspid. These bands, tubes, wires, screws, and nuts are some of the ap-pliances known as Angles Regulating and Retaining Appliances, devised and used for the purpose of correcting irregularities ofthe teeth. They may be procured of dealers in dental goods. (SeeFig. 219.) The treatment for cases of the second class is illustrated in thefollowing instance: On July 4, 1889, a man aged forty-five was ad-mitted to the Minneapolis City Hospital. A blow from a police- Fig. 219.. mans club had produced two simple fractures of the inferior max-illa. The first was an oblique fracture of the right side, beginningwith the socket of the second bicuspid, extending downward andbackward, involving the socket of the first molar, breaking out thesecond bicuspid, and greatly loosening the first molar. The secondmolar had been lost years before, while the third, as well as the re-maining teeth, were much abraded and loosened by salivary cal-culus, thus making the application of the appliance described inCase No. 1 impossible. The second fracture was situated on theopposite side high up in the ramus. Because of swollen condition of the parts, the exact line of frac-ture could not be detected, but the grinding of the ends of the boneand the great pain occasioned thereby were unmistakable evidences 43° MECHANICAL DENTISTRY. of a fracture. The patient, as in all such cases, was unable to closethe jaws. The fracture on the right

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1900
• booksubjectdentist
• bookyear1903