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In dentistry, the sigmoid curve and the Stephens curve describe patterns related to jaw movement. The sigmoid curve refers to the S-shaped path the condyle (the rounded end of the lower jaw) follows when the mouth opens and closes, showing how the jaw moves from rotation to translation as it widens. The Stephens curve describes the movement of the mandible during lateral (side-to-side) excursions, illustrating how the jaw shifts and the condyle on the opposite side moves forward and inward. Both curves help dentists and specialists understand functional jaw motion, diagnose occlusal issues, and plan treatments such as orthodontics, prosthodontics, and TMJ-related care.
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What are sigmoid and Stephens curve in diet and dentistry?
Stephens curve is a graph plotted on pH level against time . This graph will show that the food intake will reduce pH level in the mouth to a level bad for teeth and then rises again with time.
What is a curve shape?
An S-shaped curve is called a sigmoid curve. This term is used throughout the mathematical world and in healthcare settings.
What is a s curve?
An S-shaped curve is called a sigmoid curve. This term is used throughout the mathematical world and in healthcare settings.
What is a S-shaped curve?
An S-shaped curve is called a sigmoid curve. This term is used throughout the mathematical world and in healthcare settings.
What is the function of sigmoid?
A sigmoid is a mathematical function that is shown on a curve. It essentially shows data on a graph or chart but only ends up showing that data in the shape of an S.
What does sigmoid mean in anatomy?
In anatomy, sigmoid typically refers to the S-shaped curve that is found in various structures of the body, such as the sigmoid colon in the large intestine. The term sigmoid is often used to describe structures that exhibit this distinctive S-shape.
What is the function of sigmoid flexure?
Sigmoid colonThe sigmoid colon is the part of the large intestine after the descending colon and before the rectum. The name sigmoid means S-shaped (see sigmoid). The walls of the sigmoid colon are muscular, and contract to increase the pressure inside the colon, causing the stool to move into the rectum.The sigmoid colon is supplied with blood from several branches (usually between 2 and 6) of the sigmoid arteries, a branch of the IMA. The IMA terminates as the superior rectal artery.
What is a logistic function or curve?
A logistic function or curve is a mathematical function having an S shape, known as sigmoid curve. The name was given by Pierre Francois Verhulst in either the year of 1844 or 1845.
What is a Stephens curve diagram in dentistry?
A graph which plots the pH of plaque against time. The graph shows a number of challenges (intakes of food) and how these cause a decrease in plaque pH and how saliva restores the pH to normal over time. The significance of this research is that it is the frequency of food intakes that is important not the total amount of food intake which determines cariogenicity.
What is sigmoid flexure?
Sigmoid flexure is a feature of the male reproductive anatomy in certain species, such as pigs and horses, where the penis has an S-shaped curve. This anatomical structure allows for easier insertion during mating and helps to protect the penis when not in use.
What is the function of the retractor muscle in a cow?
The function of the retractor muscle in bulls is to form a sigmoid flexure (s-shaped curve) in the penis in order to hold it inside the sheath when not erect.
What is sigmoid cancer?
its cancer in the colon. sigmoid is part of the colon.
