Forensics, Comparative Anatomy, Geometries, Form And Function Question And Answers

Forensics, Comparative Anatomy, Geometries, Form And Function

Compensatory curves/occlusal curvatures.
Answer:

1. Curve of SPEE:

• It is an anteroposterior curve, an imaginary line beginning from the lower canine, buccal cusps of all lower teeth, and approximates the arc of a circle.
• Extending the arc through the head of the condyle forms a circle of 4 inches in diameter.

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2. Curve of monsoon:

Curves of Spee It is a lateral curve with its concavity facing upwards and increases in steepness from before backward, the occlusal surfaces of the upper molars facing outwards and downwards.

3. Curve of Wilson:

• It is concave for mandibular teeth and convex for maxillary teeth.
• It is a curve drawn from the left mandibular first molar to the right mandibular first molar.

Significance:

• It cannot be used to set teeth in complete dentures.
• The anterior-posterior curvature is related to the amount of anterior guidance to obtain posterior disclusion of the teeth in lateral and protrusive mandibular movements.