A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . partial or complete stenosisof the nasal air passages, resulting in mouth-breathing; open-bite malocclusion;inhibited development of the maxillae; upper retrusions; and prognathic of these conditions at times occur in one case. The direct cause of the open-bite is through the mechanical forces of the muscles acting upon the early develop-ing mandible in mouth-breathing, mostly during the long sleeping hours. Thischaracter of open-bite is so intimately associated wi
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . partial or complete stenosisof the nasal air passages, resulting in mouth-breathing; open-bite malocclusion;inhibited development of the maxillae; upper retrusions; and prognathic of these conditions at times occur in one case. The direct cause of the open-bite is through the mechanical forces of the muscles acting upon the early develop-ing mandible in mouth-breathing, mostly during the long sleeping hours. Thischaracter of open-bite is so intimately associated with malocclusions of Class III,arising as it does from the same local cause which produces some of the principalcharacters of that class, the modus operandi of its cause and its complete practicaltreatment will be found under Division 4 of that Class. Treatment In those cases when the open-bite is due to an infra-occlusal position of theincisors, they can usually be easily corrected for young patients with a light re-silient arch-bow, providing the cuspids are fully erupted and will stand the reaction Fig. A of this force. (See Fig. 233.) When the open-bite involves the cuspids and othermore distal teeth, the most effective correcting medium is direct intermaxillaryelastics. In Chapter XX, Modern Principles and Methods in Orthodontia, CHAPTER XXVIII. rVPE G. DIVISION 1. CLASS I. 231 is shown the effectiveness of the Midget Apparatus in correcting an open-bitemalocclusion, largely through the medium of intermaxillary elastics which areattached to specially designed bracket attachments which also support a verylight resilient arch-bow. When the infra-occlusion commences with the premolars, and evenly opensthe bite toward the front, a No. 22 arch-bow (.025) may be effectively employedwith spurs for the elastics attached to the bow, as shown in Fig. 154. With thisarrangement, the force of the elastics is distributed evenly to the teeth throughthe medium of the bow. For older p
Size: 2409px × 1038px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidpracticaltre, bookyear1921
