Rubber dam and appliances, absorbents and accessories, wedging and separating devices, orthodontic appliances / The S.S. White Dental Mfg. Co.

  • S.S. White Dental Manufacturing Company.
Date:
1911
Catalogue details

Licence: In copyright

Credit: Rubber dam and appliances, absorbents and accessories, wedging and separating devices, orthodontic appliances / The S.S. White Dental Mfg. Co. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

    44/62 (page 40)
    DR. F. H. LEE'S IMPROVED REGULATING SCREW AND PULLBACK This device for drawing into alignment teeth erupted outside of the arch consists of a screw bolt, threaded to fit the eye of the metal post anchorage, and provided with a nut and loose crosshead. The crosshead is perforated at each end for the attachment of ligatures. It is operated by entering the screw bolt into the post, attaching ligatures passed around the tooth to the crosshead and applying tension by turning the screw bolt or the nut, as may be, with the key wrench. In many cases the nut can be dispensed with. Price, including Key Wrench $2.00 LEE=BENNETT JACKSCREW FOR MOVING TEETH This appliance is exactly like the Improved Regulating Screw of Dr. Lee's, except that the squared ex- tremity of the head is substituted by a swiveling McCollom Jackscrew head (suggested by Dr. G. W. Bennett), and the operating key wrench has no socket. The modification simply reverses the function of the device, enabling the operator to push a tooth erupted inside of the arch out to its proper position, with the same positive, certainly controlled power. In operation, the jackscrew head is placed against the tooth to be moved, which is also ligatured to the crosshead for greater security, and tension ap- plied by turning both screw bolt and loose nut. Price, including Key Wrench $2.25 POSITIVE ACTION WITH PLATE AND POST ANCHORAGE USING THE LEE, AND THE LEE=BENNETT JACKSCREWS With the two devices here shown,—one the com- plement of the other,—teeth which have erupted outside or inside of the arch may be readily brought into alignment without risk of disturbing the other teeth. They are especially effective with obstinate teeth, as the long-rooted canines, because of their independent anchorage and positive action. Their anchorage is a metal post, split at the base to afford stability, and vulcanized into a plate fit- ting the palato-cervical borders of all the teeth ex- cept those to be moved. The plate, which is liga- tured in place, maintains these in position, the an- chorage, as a whole relieving them of all direct stress and concentrating the force upon the tooth to be brought into alignment. The free end of the post has an eye which is threaded to receive the screw bolt of the appliance proper. The devices can be used separately or on occasion both can be anchored in the same plate and utilized to push one tooth out and pull another in at one time.