What is the role of the curve of Spee?
Curve of Spee is a naturally occurring phenomenon in the human dentition. This normal occlusal curvature is required for an efficient masticatory system. [1] Such excessive curve of Spee alters the muscle imbalance, ultimately leading to improper functional occlusion.
What is the curve of Spee and curve of Wilson?
[1] The curve of Spee is designed to permit protrusive disocclusion of the posterior teeth by the combination of anterior guidance and condylar guidance, and the curve of Wilson also permits lateral mandibular excursions free from posterior interferences.
How do you find the curve of a Spee?
The depth of curve of Spee was measured as the perpendicular distance between the deepest cusp tip and a flat plane that was laid on the top of the mandibular dental cast, touching the incisal edges of the central incisors and the distal cusp tips of the most posterior teeth in the lower arch [Figure 1].
What is a reverse curve of Spee?
Archwires. All three shapes are carefully finished to ensure the archwire slides easily through the bracket slot while applying continuous force for ideal movement. R.C.S. Archwires may be used for bite correction, or with springs and elastomerics for retraction.
What is the curve of occlusion?
n. A curved surface that makes simultaneous contact with the major portion of the incisal and occlusal prominences of the existing teeth. The curve of a dentition on which the occlusal surfaces lie.
What is an occlusal plane?
One of the important factors that help us in the establishment of ideal occlusion is the orientation of the occlusal plane. Occlusal plane is the average plane established by the incisal and occlusal surfaces of the teeth; it is not a plane but represents the planar mean of the curvature of the surfaces [3].
What is the curve of Wilson in dentistry?
The curve of Wilson is the across arch curvature or posterior occlusal plane. Arc of the curve, which is concave for mandibular teeth and convex for maxillary teeth are defined by a line drawn from left mandibular first molar to right mandibular first molar.
What is curve of Monson?
[G. S. Monson (1869–1933), American dentist] The curve of occlusion of natural teeth in which each cusp and incisal edge touches or conforms to a segment of the surface of a sphere 20.3cm (8in.) in diameter, with its centre in the region of the glabella. See also compensating curve.
What is the name of the curve of the occlusal plane?
Anatomical Parts The occlusal curve (Curve of Spee; von Spee’s curve; Spee’s curvature) is defined as the curvature of the mandibular occlusal plane beginning at the tip of the lower cuspid and following the buccal cusps of the posterior teeth, continuing to the terminal molar.
Where is the occlusal plane?
What are compensatory curves?
Compensatory curves The Anteroposterior and lateral curvatures in the alignment of the occluding surfaces and the incisal edges of the artificial teeth that are used to develop a balanced occlusion.
