Dentistry – Orthodontics – Means to transmit or apply force to tooth
Reexamination Certificate
2000-09-15
2001-08-14
Wilson, John J. (Department: 3732)
Dentistry
Orthodontics
Means to transmit or apply force to tooth
C433S021000
Reexamination Certificate
active
06273713
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a palatal adjusting device and particularly a palatal adjusting device to move the upper jaw bone upward and forward for the upper teeth to have proper occlusal contact with the lower teeth.
BACKGROUND OF THE INVENTION
Because of born defect or disease, some children have occlusion problem between the upper and lower teeth.
FIG. 1
shows one of the cases in which the molars
1
,
2
of the upper and low jaw may occlude properly, but the premolar
11
,
21
, canine and incisors
12
,
22
of the upper and lower jaw cannot occlude properly and may result in a gap between the upper and lower teeth beyond the molars. It is not only unsightly, it also produces biting, chewing and digesting problem. To remedy this defect, one conventional treatment is to have a surgical operation to remove a slice of upper jaw bone which support the upper molars and to make the molars, premolars, canine and incisors have proper occlusal contact surface needed. It is a painful and expansive treatment.
There are other occasions in which patient's upper jaw bone is stepped behind the lower jaw bone and may result in no proper occlusal contact between the upper and lower front teeth. Then the upper jaw bone should be moved forward to remedy this defect. A conventional treatment is shown in FIG.
2
. The upper molar
1
at both sides have a barrel band
13
mounted thereon. There is an anchor
14
located on a side wall of the barrel band
13
for fastening a steel wire
15
. The steel wire
15
engages with a facial mask
3
which rests on patient's forehead and jaw. The steel wire
15
is subjected to a tension to pull the barrel band
13
forward. Then gradually the upper jaw bone will be pulled forward to mates with the lower jaw bone. It is a very troublesome and unconvenient treatment. The facial mask greatly interferes daily life and work of the patient. It can be done only a few hours daily, such as during sleep time at night. Its effectiveness is thus low and slow. All this begs for further improvement.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a palatal adjusting device that can raise upper jaw bone for producing proper occlusal contact between the upper and lower teeth of a patient.
It is another object of this invention to provide a palatal adjusting device that can move upper jaw bone forward for producing proper occlusal contact between the upper and lower teeth of a patient.
It is a further object of this invention to provide a palatal adjusting device that is simply structured and small size and easy to use without surgical operation or bulky facial mask.
It is yet another object of this invention to provide a palatal adjusting device that may be used constantly day and night without patient's extra work or action, and may effectively adjust patient's upper jaw bone in a short period of time.
In one aspect, this invention includes an elastic means with two arms forming a selected angle. Each arms has an end engaged with a barrel band mounted respectively on an upper and a lower molar. When the patient closes the mouth, the elastic means will be compressed and produces a vertical force to push the upper jaw bone upward. Gradually the molar, premolar, canine and incisors of the upper jaw may be leveled and have occlusal contact with the lower teeth. The elastic means may be installed in patient's mouth easily and may be used constantly day and night to enhance treatment effect. In another aspect, the elastic means may have the two arms extended substantially linearly in opposite direction. Then when patient's mouth is closed, the elastic means will be compressed and produces a forward pulling force to move the barrel band in the upper jaw forward to mate with the lower jaw bone for forming proper occlusal contact between the upper teeth and lower teeth.
REFERENCES:
patent: 4382783 (1983-05-01), Rosenberg
patent: 4618324 (1986-10-01), Nord
patent: 5645423 (1997-07-01), Collins, Jr.
patent: 5846074 (1998-12-01), Klapper
patent: 5980247 (1999-11-01), Cleary
patent: 6074207 (2000-06-01), Coats
Dougherty & Troxell
Wilson John J.
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