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Surgical treatment of prognathism in two cases with edentulous mandibles
MALFORMATIONS Preventive
Orthodontics,
AND DEFORMITIES
K. T. Adamaon. Preventive
Generally speaking, we may say that one or a combination of any of the following 1. Heredity. 2. Evolution. 3. Environmental
or local
I). .I. Australia
OF THE JAWS 23:
lfi7-168,
April,
1951.
Orthodontics all malocclusions factors:
have
their
beginnings
from
factors.
It is now an established fact that many malocclusions are the direct result of inherited faulty skull pattern. The old belief held by the Angle school that every child commences life with the possibility of developing normal occlusion provided that no interference is experienced from external influences can no longer be regarded as being correct. There is no doubt that a certain percentage of malocclusions are present at birth and that a child may be predestined to develop a malocclusion which has been handed down to him from his ancestors. This is particularly so in those malocclusions which involve an incorrect relationship of the mandible with the maxillae, namely Class II (Angle) and Class III (Angle), where the mandible is distal and mesial respectively to skull anatomy. Evolutionary changes are said by many to be producing a retrogressive change in the human face which, as time goes on, is becoming less and less prognathic and therefore shorter and shorter anteroposteriorly: thus less room is provided for the normal dentition of 32 teeth which, apparently unaffected in size by this retrogressive evolutionary change, finds it impossible to accommodate itself in the basal bone provided, without the teeth In other words, in many cases there is a marked disbecoming extremely crowded. crepancy between tooth size and basal or supporting bone. There are a large number of malocclusions which are produced by the numerous environmental factors around the mouth with which we are all so familiar. which 1 referred to in my opening remarks. You There is “the same old list of things” all know them, and I need mention only a few to illustrate my point: premature loss of deciduous teeth, prolonged retention of deciduous teeth, the numerous habits such as thumb-sucking, lip-biting, mouth-breathing, and RO on. If we are to believe the statistics which are available more than half the existing malocclusions find their origin in localized Even in those cases which are the result of inheritance or evolutionary change, factors. localized factors may add further complications to the malocclusion. Thus it would seem that, while we have no power to control these malocclusions which are produced by heredity or evolution, the remainder can be improved or even eliminated by the application of simple preventive measures. A. J. A.
Operative behandling af progeni med tandlos mandibel. Prognathism in Two Cases With Edentulous Mandibles.) Otto Gottlieb. Tandlaegebladet 65: 33, 1951.
(Surgical Treatment of Ingeborg Uottlieb and
The authors corrected the two cases of prognathism by bilateral osteotomy in the The fixation was performed with circumferential wiring over the full ascending rami. lower denture, and intermaxillary wiring fixation. The perimandibular wires gave only slight discomfort during the time they were left in place, three and four months, respectively, and the functional and cosmetic results were satisfactory. K. H. T.
Orthodontics,
AND DEFORMITIES
K. T. Adamaon. Preventive
Generally speaking, we may say that one or a combination of any of the following 1. Heredity. 2. Evolution. 3. Environmental
or local
I). .I. Australia
OF THE JAWS 23:
lfi7-168,
April,
1951.
Orthodontics all malocclusions factors:
have
their
beginnings
from
factors.
It is now an established fact that many malocclusions are the direct result of inherited faulty skull pattern. The old belief held by the Angle school that every child commences life with the possibility of developing normal occlusion provided that no interference is experienced from external influences can no longer be regarded as being correct. There is no doubt that a certain percentage of malocclusions are present at birth and that a child may be predestined to develop a malocclusion which has been handed down to him from his ancestors. This is particularly so in those malocclusions which involve an incorrect relationship of the mandible with the maxillae, namely Class II (Angle) and Class III (Angle), where the mandible is distal and mesial respectively to skull anatomy. Evolutionary changes are said by many to be producing a retrogressive change in the human face which, as time goes on, is becoming less and less prognathic and therefore shorter and shorter anteroposteriorly: thus less room is provided for the normal dentition of 32 teeth which, apparently unaffected in size by this retrogressive evolutionary change, finds it impossible to accommodate itself in the basal bone provided, without the teeth In other words, in many cases there is a marked disbecoming extremely crowded. crepancy between tooth size and basal or supporting bone. There are a large number of malocclusions which are produced by the numerous environmental factors around the mouth with which we are all so familiar. which 1 referred to in my opening remarks. You There is “the same old list of things” all know them, and I need mention only a few to illustrate my point: premature loss of deciduous teeth, prolonged retention of deciduous teeth, the numerous habits such as thumb-sucking, lip-biting, mouth-breathing, and RO on. If we are to believe the statistics which are available more than half the existing malocclusions find their origin in localized Even in those cases which are the result of inheritance or evolutionary change, factors. localized factors may add further complications to the malocclusion. Thus it would seem that, while we have no power to control these malocclusions which are produced by heredity or evolution, the remainder can be improved or even eliminated by the application of simple preventive measures. A. J. A.
Operative behandling af progeni med tandlos mandibel. Prognathism in Two Cases With Edentulous Mandibles.) Otto Gottlieb. Tandlaegebladet 65: 33, 1951.
(Surgical Treatment of Ingeborg Uottlieb and
The authors corrected the two cases of prognathism by bilateral osteotomy in the The fixation was performed with circumferential wiring over the full ascending rami. lower denture, and intermaxillary wiring fixation. The perimandibular wires gave only slight discomfort during the time they were left in place, three and four months, respectively, and the functional and cosmetic results were satisfactory. K. H. T.