attrition - omr

8/2/2019 Attrition - Omr

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ATTRITION OF TOOTH

Chinu Maria Cyriac

IV BDS


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ATTRITIONAttrition is the pathological wear

away of the teeth because of tooth

to tooth contact as in mastication

or parafunction


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Types

oPhysiological attrition

oPathological attrition


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Physiological Attrition

Due to normal aging process

Fairly constant & proportionate to age of the

individual


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Pathological Attrition

occurs due to certain abnormalities in occlusion,

chewing pattern or due to some

structural defects in the teeth

Tooth wear not constant

Not proportionate to age of the individual


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Mild Attrition ModerateAttrition

Severe Attrition


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Etiology Abnormal occlusion

* Developmental-Eg: Malocclusion & crowding of teeth

*Acquired-

Eg: Extraction

Abnormal chewing habits*Para functional chewing habits like Bruxism

*Ch. Persistent chewing of coarse & abrasive foods like tobacco & betel nut

Occupation

* Workers exposed to abrasive dust

Structural defects

* Amelogenesis Imperfecta

* Dentinogenesis Imperfecta

where hardness of Enamel & Dentin is reduced=>tooth more prone to Attrition


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Clinical Features Sex More in men than in women

Sites # Deciduous as well as Permanent

# Occurs on occlusal incisal & proximal surfaces of

the teeth

Occlusal Attrition


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Physiological Attrition

Onset-Begins with

*Incisal edge of incisors*Palatal cusp of Max. M &*Buccal cusp of Mand. M*Proximal surface of teeth in the contact point areas

Color of the teeth When the dentin gets exposed it generallybecomes discolored ie Brown

Signs- Reduction of* Vertical tooth height -Flattening of

occlusal inclined plane

* horizontal tooth width shortening oflength of dental arch


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Pathological Attrition

Severe tooth loss

Attrition of occlusal surface of the teeth leads to reduction

in occlusal face height


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Radiographic Features

Crown -Smooth wearing of incisal & occlusal surfaces ofinvolved teeth is evident by shortened crown image

Pulp - sclerosis of pulp chamber & canals is seen due to

deposition of secondary dentin which narrows the pulpcanals

Periodontal ligament widening of PDL space &

hypercementosis

Alveolar bone - some loss of alveolar bone


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Flattening of cusp

Narrow Pulp canal


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Corrective methods- Correction of Malocclusion,stoppage of tobacco chewing habit. Restriction of diet

to non coarse food

Habit breaking appliance construction of occlusal

guard to correct parafunctional habits like Bruxism

Management
http://www.google.co.in/imgres?imgurl=http://2.bp.blogspot.com/_2rcJlsERZjc/S6vHHEss9bI/AAAAAAAAAJs/UBNtvX4U4G0/s1600/Guarda+2.jpg&imgrefurl=http://prostheticdentallaboratory.blogspot.com/&usg=__JFYCRfibAjTTHvkgOnoAtd7YQHs=&h=400&w=400&sz=17&hl=en&start=11&zoom=1&tbnid=T7mnZ0PazZ1nmM:&tbnh=124&tbnw=124&ei=yASATouRLcPnrAfN_MztAw&prev=/search?q=occlusal+guards+to+prevent+teeth+grinding&hl=en&sa=X&tbm=isch&prmd=ivns&itbs=1http://www.google.co.in/imgres?imgurl=http://www.drmoorhead.com/wp-content/uploads/2009/01/nightguardex.jpg&imgrefurl=http://www.drmoorhead.com/&usg=__IpklsTMYLw3mZQhN55TFOIKflXg=&h=1024&w=1280&sz=642&hl=en&start=6&zoom=1&tbnid=vxR2IdsTznLdVM:&tbnh=120&tbnw=150&ei=yASATouRLcPnrAfN_MztAw&prev=/search?q=occlusal+guards+to+prevent+teeth+grinding&hl=en&sa=X&tbm=isch&prmd=ivns&itbs=1


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Before Treatment After Crown Placement

Protection of tooth by Metal or Metal ceramic crowns

where structural defects( Dentinogenesis Imperfectaor Amelogenesis Imperfecta ) exists.


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ReferenceText book of Oral Medicine Ghoms

Shafers


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attrition - omr

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