Prevalence of cuspid protected occlusal pattern in young adult males

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38 3

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351

Results reported by Woelfel and co-workers and Dr. Winkler’s conclusions (J. PROSTHET. 28: 580-584, 1971) tend to be substantiated by our final conclusions as stated in Part 11: ( 1) All three processing techniques demonstrated three-dimensional changes. (2) No one processing technique appeared to be superior to the other techniques as far as dimensional stability is concerned. CURTIS M. BECKER, D.D.S., M.S.D. DENT.

LEFT

BANK

5055

E. KENTUCKY

DENVER, DALE E. JACK

PROIJESSIONAL COLO. SMITH,

80222, D.D.S.,

I. NICHOLLS,

BLDG. AND

M.S.D., AND B.E., M.A.Sc., Pn.D.

UNIVERSITY OF WASHINGTON SCHOOL OF DENTISTRY SEATTLE, WASH. 98195

IADR PROSTHODONTIC Prevalence of cuspid yowng adult males P. A. Guevara

protected

occlusal

pattern

ABSTRACT in

and Y. H. Ismail.

Several occlusal theories have been advanced in the literature; among which are three basic theories, (a) Cuspid-protected occlusion, (b) Group-function occlusion, and (c) Balanced occlusion. These theories received considerable attention regarding approaches and techniques in restoring occlusion. This investigation was to study the prevalence of each of these occlusal theories among young adults with “normal OCC~Usions.” There were 466 subjects selected from a larger sample for this study. All were male subjects with ages between 23 and 37. All exhibited Angle’s Class I occlusion; and at least 28 teeth were present, Casts of each subject’s dental arches were mounted on an adjustable articulator, using a face-bow transfer. Metallic oxide paste was used to record all mandibular relations, to adjust the articulator. Occlusal contacts in centric, protrusive, right lateral, and left lateral relations were recorded on the casts and the “occlusal analysis sheet.” Results indicated that (1) Cuspid-protected occlusion was prevalent in 58.4% of the sample, where only cuspids contact during lateral excursions. (:!) Group-function odusion in 27.3% of the sample, where one or more teeth, in addition to the cuspids, contact during lateral excursions. (3) Balanced occlusion was 9.2% of Ithe sample, bilateral psterior contact was present during lateral excursions. (4) 5.1% of the sample was classified as “malocclusion,” occlusal contact pattern in these cases did not fall within the limits of any established occlusal theory.

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Reprinted from the and the American

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with permission holder).

of the author,

the