Stress-relieving hinge for a dental restoration

Details Stress-relieving hinge for a dental restoration Stress-relieving hinge for a dental restoration

1979-07-02

1981-01-27

Peshock, Robert

Dentistry

Prosthodontics

Stress breaker

A61C 1328

Patent

active

042472865

ABSTRACT:
A first hinge member has a serrated shank affixed to a dental restoration section and a spherical pivot-head at the free end of the shank; a pair of oppositely-open, axially-aligned, hemispherical bearing cups are provided on the pivot head for engagement by hemispherical trunnions provided on the inner wall of a substantially spherical cap forming part of a second hinge member affixed to a clasp section engaging an abutment tooth; a downwardly-open semi-cylindrical stop member is affixed to the cap in overlying relationship with the free end of the shank for engagement thereby to limit relative movement between the restoration section and the endentulous ridge portion of a user's mouth.

REFERENCES:
patent: 1433770 (1922-10-01), Wolfe
patent: 1599361 (1923-09-01), Henderson
patent: 2611957 (1952-09-01), Baca et al.
patent: 2797482 (1957-07-01), Zahn
patent: 2798294 (1957-07-01), Zahn
patent: 3019528 (1967-02-01), Pietro
patent: 3023500 (1962-03-01), Prosen
patent: 3267574 (1966-08-01), Oddo
patent: 3999297 (1976-12-01), Globe
patent: 4009519 (1977-03-01), Hallmark
patent: 4014094 (1977-03-01), Schumann

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