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Патент USA US3019540

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Feb. 6, 1962
A. J. DE PIETRO
3,019,528
STRESS BREAKER FOR ARTIFICIAL DENTURES
Filed Dec. 1, 1959
IINVENTOR.
\ ANTHONY'J. DE PIETRO
BY
ATTORNEYS
‘ 1: ire
3,019,528
?tates Patent
Patented Feb. 6, 1962
1
2
3,019,528
plate 46, the part 44 and the plate 46 being suitably
formed to provide a T-shaped ‘slot 48, which slot slid
STRESS BREAKER FOR ARTIFICIAL DENTURES
ably detachably receives the crosspiece aforesaid.
Anthony J. De Pietro, Spring?eld, Pa.
(15524 S. Broad St, Philadelphia, Pa.)
Filed Dec. 1, 1959, Ser. No. 856,426
3 Claims. (Cl. 32-5)
The shank 32 is spaced from the side, top and bottom
walls of the tubular member 30, in consequence of
which the thickness of the lining 34 of resilient material
is substantial. Thus the false teeth mounted upon the
saddle and the “tubular member 30 interposed between
This invention relates generally to arti?cial dentures,
and more particularly to means for securing arti?cial
the false teeth and the saddle may be turned to a limited
dentures to the so-called abutment or anchor tooth 10 degree in either direction about the shank 32, shifted
next adjacent to the end of the denture.
transversely to a limited degree in any direction rela
It is known in partial dentures to mount arti?cial teeth
tive to the shank 32, and rocked vertically or horizon
upon a. saddle adapted to seat upon the endentulous
tally relative to the shank 32. While the movements
area or ridge and to anchor the saddle to a permanent
aforesaid are limited in degree, they are sufficient to
tooth. One of the di?‘iculties with known arrangements 15 allow the saddle to ride freely upon the endentulous
is that when the saddle moves, the permanent or an
area or ridge and at the same time to take the stress off
chor tooth is subject to high stresses, in consequence
the anchor tooth, with longer life to the anchor tooth
of which the permanent tooth is loosened and eventual
and greater comfort to the patient.
ly rendered useless. Accordingly, an object of the pres
It will be understood, of course, that the present
ent invention is to provide improved means for anchor 20 invention is susceptible of various changes and modi?
ing the denture in operative position in such a manner
cations without departing from the general principles
that the denture is capable of normal movements with
or real spirit of the invention. For example, while only
out imparting stresses to the anchor tooth sufficient to
one denture has been described and shown, it will be
loosen the same.
evident that by employing a lingual bar the attachment
Another object of the invention is to provide such 25 may include two saddles provided ‘with teeth, the sad
means having operatively interposed between the saddle
dles being disposed on opposite sides of the jaw. It
and the anchor tooth resilient means which permits the
will also be evident that while the invention has been
saddle and the teeth carried thereby to move relative to
described and shown as securing the partial denture to
the anchor tooth to a limited degree in any direction
the ?rst molar, the partial denture may be secured to
without destructively stressing the anchor tooth.
Other objects of the invention will appear more fully
as the following description is read in conjunction with
30
another tooth, for example, the ?rst bicuspid. Still fur
ther, it will be evident, that while the invention has been
described and shown as of the removable type it could
the accompanying drawing, in which:
be premanently mounted in the mouth, as by eliminat
FIGURE 1 is a section through the lower jaw and its
teeth, showing a partial denture overlying an endentu
ing the T-shaped crosspiece and the insert therefor and
by employing instead, a clasp embracing the anchor
lous area to the rear of the ?rst molar;
FIGURE 2 is a plan view of the arrangement shown
tooth. Accordingly, it is intended to claim the inven
tion broadly as well as speci?cally as indicated by the
in FIGURE 1, omitting the arti?cial teeth;
appended claims.
FIGURE 3 is a vertical section on line 3-3 of FIG
What is claimed is:
1. In an arti?cial denture, the combination compris
FIGURE 4 is an enlarged section on line 4-4 of FIG
ing a saddle, false teeth carried by said saddle, a tubu
URE 2, omitting the gum and the arti?cial teeth; and
lar member between said teeth and saddle and embedded
FIGURE 5 is an exploded view of the arrangement
in said teeth, a shank projected into said tubular mem
omitting the arti?cial teeth.
ber and adapted for being detachably anchored by one
Referring to the drawing, the lower jaw, designated 45 end to a permanent tooth, and a substantially thick lay
10, has permanent teeth indicated by the numerals 12,
er of rubber-like material internally lining said tubular
14, 16, 18 and 20. The tooth 20 is the ?rst molar and
member and thereby providing a resilient cushion be
to the rear of this molar is a partial denture, generally
tween said tubular member and shank, said shank be
designated 22, including a saddle 24 made of a suitable
ing permanently embedded in said rubber-like material.
plastic material and mounting a second molar 26 and 50
2. In an arti?cial denture, the combination compris
a third molar 28. The undersurfaces of the molars 26
ing a saddle, false teeth carried by said saddle, a tubu
and 28 are grooved to accommodate a tubular member
lar member between said teeth and saddle and embedded
30 rectangular in transverse section and overlying the
in said teeth, a shank projected into said tubular mem
saddle 24. The plastic material out of which the sad
ber, means for securing said shank to a permanent tooth
dle 24 is formed is suitably worked around the teeth 26 55 including means at one end of said shank adapted for
and 28 and the tubular member 30.
being detachably slidably ?tted into a channel formed
Projecting rearwardly into the tubular member 30 is
in said permanent tooth and extending longitudinally
a shank 32 rectangular in transverse section and perma
thereof, and a substantially thick layer of rubber-like
nently embedded or cushioned in resilient rubber or
material internally lining said tubular member and there
rubber-like material 34 internally lining the tubular 60 by providing a resilient cushion between said tubular
member 30. Latex rubber has been found suitable for
member and shank, said shank being permanently em
the purpose intended. A-f?xed to the fore end of the
bedded in said rubber-like material.
shank 32 is a crosspiece which is T-shaped in transverse
3. In an arti?cial denture, the combination compris
section, the web of the crosspiece being designated 38
ing a saddle, false teeth carried by said saddle, a tubu~
and the ?ange being designated 40.
65 lar member rectangular in transverse section between
The back of the ?rst molar or anchor tooth 20 is suit
said teeth and saddle and embedded in said teeth, a
ably recessed, as at 42, for accommodating an insert con
shank rectangular in transverse section and projected
sisting of a thin sheet metal part 44 af?xed to a rigid
into said tubular member, means for securing said shank
URE l, omitting the arti?cial teeth;
4.0
3,019,528
3
to a permanent tooth including means at one end of
said shank having a T-shaped head adapted for being
detachably slidably ?tted into a channel formed in said
permanent tooth and extending longitudinally thereof,
4
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,324,476
Supplee _____________ __ Dec. 9, 1919
59,120
France ______________ __ Dec. 9, 1953
and a substantially thick layer of rubber-like material
FOREIGN PATENTS
internally lining said tubular member and thereby pro
viding a resilient cushion between said tubular member
and shank, said shank being permanently embedded in
said rubber-like material.
(Addition to No. 1,013,678)
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