compensating curve.ppt
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Compensating curves are artificial curves introduced into complete dentures to achieve balanced occlusion. They compensate for the space formed between the posterior teeth during jaw movements. There are two main types of compensating curves: 1. Anteroposterior curves (like the Curve of Spee) which raise the distal portions of the posterior teeth to compensate for the wedge-shaped opening that occurs in back teeth during protrusion. 2. Mediolateral curves (like the Curve of Monson) which compensate for the opening formed when the jaw moves laterally by incorporating curvature in the frontal plane. These curves help distribute forces during mastication.
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The compensating curve refers to the anatomic curves established by the occlusal alignment of teeth to allow for balanced occlusion during lateral and protrusive jaw movements. There are two main types:
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2. The mediolateral compensating curve includes the Curve of Monson, Curve of Wilson, and Curve of Pleasure/Anti-Monson Curve, which help achieve lateral balance of occlusion during jaw movements. These curves are defined based on the direction of curvature seen in different planes.
Normal occlusion 1 /certified fixed orthodontic courses by Indian dental acad...
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The document discusses normal occlusion from the perspectives of the Indian Dental Academy. It defines key concepts such as normal occlusion, ideal occlusion, and Andrews' six keys to normal occlusion. Normal occlusion is described as a range that can vary between individuals while still being functional. Ideal occlusion is a theoretical standard. Andrews' six keys to normal occlusion are established based on studies of non-orthodontic individuals and include relationships between molars, crown angulation, inclination, lack of rotations, tight contacts, and a flat occlusal plane.Concepts of Complete denture occlusion
This document discusses concepts of complete denture occlusion. It provides an overview of the history of denture occlusion philosophies from early carvings of teeth from stone and wood to modern concepts developed in the early 20th century. Key concepts discussed include balanced occlusion, factors affecting balanced occlusion like condylar guidance and incisal guidance, and various occlusion philosophies proposed over time including those by Gysi, Hanau, Pleasure, and Boucher. The document does not conclude on a superior occlusal scheme but notes a balanced articulation appears most appropriate.
Occlusion in Complete denture
This document discusses occlusion in complete dentures. It begins by defining occlusion and describing different types of natural tooth occlusion compared to complete denture occlusion. Key differences are that incising with front teeth can dislodge dentures, interferences cannot be avoided due to lack of proprioception, and malocclusion causes immediate damage in dentures. The document then outlines requirements for complete denture occlusion including stability, minimal contacts, and directing forces vertically. It describes balanced, monoplane, and lingualized occlusal schemes for dentures and factors that affect achieving balanced occlusion such as condylar guidance, incisal guidance, and compensating curves. Monoplane occlusion lacks cusps for only vertical forces while lingualized
Occlusion basics
The document discusses various concepts related to occlusion including definitions provided by Angle and Shaw. It describes normal, ideal, physiologic and other types of occlusion. Characteristics of centric occlusion and eccentric occlusion are outlined. Classification of occlusion is discussed based on molar relationship and mandibular position. Concepts like balancing occlusion, functional occlusion and traumatic occlusion are explained. Cusps are classified as centric holding or non-supporting. Occlusal patterns like canine guided and group function are covered. Imaginary curves of Spee, Wilson and Monson are introduced. Centric relation and Andrews Keys of occlusion are defined.
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04- Occlusion in prosthodontics- Concepts of occlusion.ppt
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- 1. FACULTY OF DENTAL SCIENCES Dr Prince Kumar
- 3. Factors of Balanced Occlusion • Inclination of the condylar path or condylar guidance • Incisal guidance • Orientation of the plane of occlusion or occlusal plane • Cuspal angulation • Compensating curves.
- 4. • The compensating curves are artificial curves introduced into the complete denture occlusion in order to achieve a balanced occlusion. They are called compensating curves because they compensate for the space (Christensen's phenomenon) formed between the posterior portions of the upper and lower occlusal surfaces during eccentric movements of the mandible.
- 5. • Definition: The anteroposterior curvature (in the median plane) and the mediolateral curvature in the frontal plane in the alignment of the occluding surfaces and incisal edges of the artificial teeth that are used to develop balanced articulation (GPT-6).
- 6. Curvatures in natural dentition • Curve of Spee • Curve of Wilson • Pleasure Curve
- 7. Curve of Spee • 1980-German anatomist- Ferdinand Von Graf Spee described an occlusal curve after studying human skulls. • Definition: The anatomic curve established by the occlusal alignment of the teeth, as projected on to the median plane, beginning with the cusp tip of the mandibular canine and following the buccal cusp tips of the premolar and molar teeth, continuing through the anterior border of the mandibular ramus, ending with the anterior most portion of the mandibular condyle..
- 8. Curve of Wilson • It is a mediolateral curve that contacts the buccal and lingual cusp tips on each side of the arch. It results from the inward inclination of the posterior teeth (mandibular molars), making the lingual cusps lower than the buccal cusps • . • Consequently, the buccal cusps are higher than the palatal cusps in the maxillary arch . In the natural dentition, this arrangement helps the teeth resist masticatory loads better.
- 9. Pleasure curve • Defined as, A helicoidal curve of occlusion that, when viewed in frontal plane conforms to a curve that is convex superiorly except for the last molars which reverses that pattern • Usually seen in excessive wear of teeth • Described by: Max Pleasure
- 10. Compensating curves: • A) Anteroposterior curves-(curve of Spee) • B) Mediolateral curves- (Curve of Monson)
- 11. Curve of Spee • incorporated -raising the distal portions of the first and second molars to conform to a curve • compensate for the wedge shaped opening (Christensen's phenomenon), which occurs in the posterior part of the occlusion rims when the mandible is protruded.
- 12. Mediolateral curve- • compensates for the wedge like opening formed when the mandible is moved laterally to the opposite side.
- 13. Curve of Monson • It is an artificial curve, based on Monson's spherical theory of occlusion. • Defined as, A proposed ideal curve of occlusion in which each cusp and or inciisal edge touches or conforms to a segment of the surface of the sphere 8 inches in diameter, with its center in the region of the glabella.
- 14. • Curve of monson- involves all the teeth • Curve of Wilson-involves only molars
- 15. Reverse curve (Pleasure curve/ Antimonson curve/ Frequency curve) • Given for maxillary first premolar by raising palatal cusp higher than the buccal cusp.