ORAL PHYSIOLOGY SAS 20

Curve of Spee

This is the curvilinear appearance of the occlusal and incisal surfaces of the teeth when viewed from a point opposite the first molars bucally.

Curve of spee

This type of curve is required for an efficient masticatory system

Curve of wilson

What type of curve that contacts the buccal & lingual cusp tips of the mandibular buccal teeth

Inward inclination of the lower posterior teeth

In curve of wilson, the mediolateral on each side results from?

Curve of Monson

This is an ideal curve occlusion in which each cusp and incisal edge touches the surface of an imaginary sphere 8 inches in diameter with its center in the region of the glabella.

Dr. George S. Monson (1920)

Who proposed the curve of Monson and what year

cusps and ridges

sulci and developmental grooves

interdental spaces or embrassures

They vary in degree of opening from such small ones to milimeter or more at the widest points of embrassures

-Mandibular central incisor

-Maxillary third molar

What are the teeth that have no 2 antagonist teeth in opposing arch?

stabilize teeth in position and prevention of leongation in case of loss of opposing tooth

better distribution of forces

importance of having antagonist design

MIgration of adjoining teeth

What causes disruption of contanct relationship in the vicinity

Hypereruption/supraeruption

term when tooth movement is a result when a tooth losses its antagonist

Working cusp/functional cusps

WHat type of cusps are broad and rounded

Supporting cusp

What type of cusps that can occlude with opposing central fossa?

Supporting cusp

cusp that will receive the masticatory force

working cusp

functional cusp

centric cusp

other names for supporting cusp

Lingual cusps

What is the functional cusps for maxillary posterior teeth

Buccal cusps

What are the functional cusps in mandibular posterior teeth

Non-supporting cusp

Cusps that do not contact the tooth and are usually located in the embrasures or developmental grooves of the opposing teeth.

Non-functioning cusps

These cusps are realtively sharp with definite tips

Centric stops

Areas of occlusal contact that a supporting cusp makes with opposing teeth in centric occlusion. It contributes to occlusal stability.

Hellman

WHo presented the scheme of 138 points of possible occlusal contacts for the 32 teeth.

Triangular ridge

A combination of prominently formed enamel that extends from cusp tips toward the center of occlusal surfaces, usually ending in fossae or developmental grooves.

Sulcus

Broad depression or valley on the occlusal surfaces of posterior teeth.