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Why Demosthenes mouthed pebbles?
308
Amer.
lieviews and abstracts
J. Orthodont. March 1970
The responses developed were irreversible, injurious, and degenerat,ive, anal their degrees of injury were in proportion to loading weight. Mitotic divisiotl was completely disturbed by the compressive force, and cells showed a low re sistance to the shearing force. When cells were covered with a coverglass, blister formation occurred as a result of an insufficient oxygen supply from the medium. It is suggested that maintenance of the blood supply was a very important factor in consideration of an opt,imal orthodontic force as described by Schwnr;! and others on an in viva experimental basis.
Calcium Exchange Heavy Intermittent
in Alveolar Orthodontic
J. H. Sklaroff and J. 1. Rabinowitz J. D. Res. 47: 98, January-Febrvmy,
Process Forces
of Dogs
by
light
Continuous
and
1968
A quantitative autoradiographic technique was used to measure calcium activity in the tension and pressure regions surrounding the third incisor and canine teeth of a dog which had been subjected to either a light continuous or a heavy intermittent force. Total tooth movement was the same with the use of light continuous and heavy intermittent forces in the dogs studied. No tooth movements occurred in the control animals. Significant differences in calcium-45 concentration, deposition, or both were observed between the pressure and tension regions of dogs under orthodontic tooth movement with both types of forces used. The tension region showed higher calcium-45 activity. No significant differences in calcium-45 concentration were found between the corresponding pressure and tension regions of the controls. The pressure regions during orthodontic movement and the corresponding regions of control animals showed approximately the same calcium-45 activity.
Why
Demosthenes
Saul M. Bien The Lancet 2: 1156,
Mouthed
Nov.
Pebbles?
S5,1967
In a very interesting letter to the editor of The Land, Dr. Bien reports that during a visit to the British Museum he saw two busts of Demosthenes which seemed to show that the great Athenian orator and statesman had a left harelip. Subsequently, when he visited the beaches of Greece, he saw sea-smooth shingle and pebbles which could serve 51sobturators. Recalling that Demosthenes was said to have gone down to the seashore where he filled his mouth with pebbles and orated above the roar of the waves; it occurred to Dr. Bien that in all likelihood he went to the seashore to obtain a flat, surf-smoothed stone that would serve as an obturator for a possible cleft palate associated with the presumed developmental lip defect. The repeated visits may have been made for the purpose of laying up a store of suitable new pebbles.
Amer.
lieviews and abstracts
J. Orthodont. March 1970
The responses developed were irreversible, injurious, and degenerat,ive, anal their degrees of injury were in proportion to loading weight. Mitotic divisiotl was completely disturbed by the compressive force, and cells showed a low re sistance to the shearing force. When cells were covered with a coverglass, blister formation occurred as a result of an insufficient oxygen supply from the medium. It is suggested that maintenance of the blood supply was a very important factor in consideration of an opt,imal orthodontic force as described by Schwnr;! and others on an in viva experimental basis.
Calcium Exchange Heavy Intermittent
in Alveolar Orthodontic
J. H. Sklaroff and J. 1. Rabinowitz J. D. Res. 47: 98, January-Febrvmy,
Process Forces
of Dogs
by
light
Continuous
and
1968
A quantitative autoradiographic technique was used to measure calcium activity in the tension and pressure regions surrounding the third incisor and canine teeth of a dog which had been subjected to either a light continuous or a heavy intermittent force. Total tooth movement was the same with the use of light continuous and heavy intermittent forces in the dogs studied. No tooth movements occurred in the control animals. Significant differences in calcium-45 concentration, deposition, or both were observed between the pressure and tension regions of dogs under orthodontic tooth movement with both types of forces used. The tension region showed higher calcium-45 activity. No significant differences in calcium-45 concentration were found between the corresponding pressure and tension regions of the controls. The pressure regions during orthodontic movement and the corresponding regions of control animals showed approximately the same calcium-45 activity.
Why
Demosthenes
Saul M. Bien The Lancet 2: 1156,
Mouthed
Nov.
Pebbles?
S5,1967
In a very interesting letter to the editor of The Land, Dr. Bien reports that during a visit to the British Museum he saw two busts of Demosthenes which seemed to show that the great Athenian orator and statesman had a left harelip. Subsequently, when he visited the beaches of Greece, he saw sea-smooth shingle and pebbles which could serve 51sobturators. Recalling that Demosthenes was said to have gone down to the seashore where he filled his mouth with pebbles and orated above the roar of the waves; it occurred to Dr. Bien that in all likelihood he went to the seashore to obtain a flat, surf-smoothed stone that would serve as an obturator for a possible cleft palate associated with the presumed developmental lip defect. The repeated visits may have been made for the purpose of laying up a store of suitable new pebbles.