What is attrition and abrasion?

Abrasion occurs as a result of two surfaces rubbing against each other resulting in the wearing down of one or both of the surfaces. However, attrition refers to the breaking off of particles (erosion) which occurs as a result of objects hitting against each other.

What is the difference between attrition test and abrasion test?

The main difference between abrasion and attrition is that abrasion is a slow process, whereas attrition is a fast process. Moreover, abrasion occurs due to the rubbing of the surface, which causes one or both surfaces to undergo erosion. In contrast, attrition occurs due to the hitting of one surface another.

What is teeth attrition?

Dental attrition is the loss of tooth structure or tissue caused by tooth-on-tooth contact. Although this type of tooth wear is considered part of the normal aging process, more rapid dental attrition may be due to larger dental problems.

What is abrasion and erosion?

Abrasion is the process of erosion produced by the suspended particles that impact on solid objects. Windblown grains of sand, carried along at high speed, are a very effective tool that can sandblast away rocks by abrasion. Wind deflation.

What comes before abrasion and attrition?

Abstract. Tooth wear is the result of three processes: abrasion (wear produced by interaction between teeth and other materials), attrition (wear through tooth-tooth contact) and erosion (dissolution of hard tissue by acidic substances). A further process (abfraction) might potentiate wear by abrasion and/or erosion.

Non Carious Tooth Wear//Attrition, Abrasion, Abfraction, Erosion//Clinical Appearance, Diagnosis

What is an example of abrasion?

A scraped knee is an example of an abrasion. Other examples include road rash, raspberries, strawberries, and injuries such as a cheese grater or sandpaper could create.

What is attrition and abrasion in dentistry?

Dental attrition is caused by tooth to tooth contact forming acquired wear facets upon pristine enamel, whereas abrasion is caused by food and foreign body contact (e.g., tooth brushing) that may obliterate attrition wear patterns.

What is a attrition in geography?

Attrition - this is when rocks that the sea is carrying knock against each other. They break apart to become smaller and more rounded. Solution - this is when sea water dissolves certain types of rocks. In the UK, chalk and limestone cliffs are prone to this type of erosion.

What is attrition abrasion and erosion?

Abstract. Tooth wear is the result of three processes: abrasion (wear produced by interaction between teeth and other materials), attrition (wear through tooth-tooth contact) and erosion (dissolution of hard tissue by acidic substances).

What is called a abrasion?

An abrasion is a type of open wound that's caused by the skin rubbing against a rough surface. It may be called a scrape or a graze. When an abrasion is caused by the skin sliding across hard ground, it may be called road rash. Abrasions are very common injuries.

What causes tooth abrasion?

Dental abrasion is another form of dental damage caused by the forces applied to the teeth. Rather than being caused by tooth on tooth contact, abrasion is typically caused by outside elements, like aggressively brushing the teeth. Abrasion begins with the wearing down of the enamel.

What causes gum abrasion?

Abrasion is caused by friction from foreign objects, such as pencils, fingernails, or mouth piercings. Using a hard toothbrush, abrasive tooth products, and improper brushing technique can also lead to abrasion.

What is cervical abrasion?

Cervical abrasion is non-carious (dental tissue lost near the cementoenamel junction (CEJ)), mechanical wear of teeth due to external forces other than tooth-tooth contact. It most commonly affects teeth along the cervical margins, in most cases, it affects the premolars and canines.

What is the purpose of attrition test?

An attrition test is a test carried out to measure the resistance of a granular material to wear. An example of a material subjected to an attrition test are stones used in road construction, indicating the resistance of the material to being broken down under road traffic.

What is the purpose of abrasion test?

Abrasion testing is used to test the abrasive resistance of solid materials. Materials such as metals, composites, ceramics, and thick (weld overlays and thermal spray) coatings can be tested with these methods.

How attrition test is done?

Procedure of Attrition Test on Stones

For the attrition test, 5 kg of broken angular pieces of stones is placed in both the cylinders of Deval's attrition testing machine. The cylinders are kept in an inclined position such that their axis makes an angle of 30 degrees with the horizontal.

What is the process of attrition?

Attrition is the process of erosion that occurs during rock collision and transportation. The transportation of sediment chips and smooths the surfaces of bedrock; this can be through water or wind. Rocks undergoing attrition erosion are often found on or near the bed of a stream.

What's the difference between abrasion and attrition geography?

Abrasion is when rocks and other materials carried by the sea are picked up by strong waves and thrown against the coastline causing more material to be broken off and carried away by the sea. Attrition is when material such as rocks and stones carried by waves hit and knock against each other wearing them down.

What does attrition look like?

Attrition can be calculated by multiplying the number of employees who have left by your total number of employees and multiplying the result by 100. The formula looks like this: ATTRITION RATE (%) = (Number of leaves ÷ number of employees) x 100.

What is attrition wind erosion?

Attrition is a type of erosion that occurs when bed load erodes. It is characterized by wearing of land as well as the removal of dune sediments, rocks and other particles by the action of tidal currents, wave currents, high winds and other factors.

What are the 4 types of erosion?

Rainfall produces four types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.

What are the two types of erosion?

The main forms of erosion are: surface erosion. fluvial erosion.

What is abfraction vs abrasion?

An abfraction is an angular notch at the gumline caused by bending forces applied to the tooth. An abrasion is a rounded notch at the gumline that may be visibly indestinguishable from an abfraction, although in cross-section abrasions are generally not as angular and have more of a saucered appearance.

What is the difference between attrition and abfraction?

Abstract. Tooth wear is the result of three processes: abrasion (wear produced by interaction between teeth and other materials), attrition (wear through tooth-tooth contact) and erosion (dissolution of hard tissue by acidic substances). A further process (abfraction) might potentiate wear by abrasion and/or erosion.