Attrition |
ATTRITION
- Physiological wearing away of tooth as a result of tooth to tooth contact, as in mastication
- Phenomenon is physiologic rather than pathologic
Clinical feature
Men> female
–masticatory force
–chewing tobacco habits
–bruxism
Attrition
•Polished facet on cusp tip or ridges or slight flattening of incisal edges
•Gradual reduction in cusp height
•Flattening of occlusal plane
•Shortening of the length of the dental arch
•Pulp protection during attrition
- Physiological wearing away of tooth as a result of tooth to tooth contact, as in mastication
- Phenomenon is physiologic rather than pathologic
Clinical feature
Men> female
–masticatory force
–chewing tobacco habits
–bruxism
Attrition
•Polished facet on cusp tip or ridges or slight flattening of incisal edges
•Gradual reduction in cusp height
•Flattening of occlusal plane
•Shortening of the length of the dental arch
•Pulp protection during attrition
ABRASION
•Pathologic
wearing away of tooth substance through
some abnormal mechanical process
• Present in exposed root surfaces of teeth
•V- shaped / wedge-shaped, ditch
•Sharp angle formed between abraded region and rest of tooth
•Exposed dentin is highly polished
Cause of abrasion
•Abrasive dentifrices
•Habitual pipe smoking
•Occupation of the patient
–Carpenters
–Shoe makers
–Tailors
–Hair dressers
EROSION
•Irreversible loss of dental hard tissue by a chemical process that does not involve bacteria
•Dissolution of mineralized tooth structure
•Causes of erosion
• Present in exposed root surfaces of teeth
•V- shaped / wedge-shaped, ditch
•Sharp angle formed between abraded region and rest of tooth
•Exposed dentin is highly polished
Cause of abrasion
•Abrasive dentifrices
•Habitual pipe smoking
•Occupation of the patient
–Carpenters
–Shoe makers
–Tailors
–Hair dressers
EROSION
•Irreversible loss of dental hard tissue by a chemical process that does not involve bacteria
•Dissolution of mineralized tooth structure
•Causes of erosion
Intrinsic
•Gastroesophageal reflux
•Vomiting
•Acidic beverages
Depends on
•Frequency
•Method of intake
•Medications
•Direct contact with the teeth
•Chewed or held in mouth prior to swallowing
- vitamin C preparation
•Occupational
•Acid vapours
-Chronic hydrochloric, sulphuric, nitric acids
•Swimmers
•Occupational wine tasters
•Gastroesophageal reflux
•Vomiting
•Acidic beverages
Depends on
•Frequency
•Method of intake
•Medications
•Direct contact with the teeth
•Chewed or held in mouth prior to swallowing
- vitamin C preparation
•Occupational
•Acid vapours
-Chronic hydrochloric, sulphuric, nitric acids
•Swimmers
•Occupational wine tasters
Intrinsic
Gastroesophageal reflux disease
- Gastric acids pass involuntarily into the esophagus and escape up into mouth
•Vomiting
•Medication
•Antidepressant medications
Gastroesophageal reflux disease
- Gastric acids pass involuntarily into the esophagus and escape up into mouth
•Vomiting
•Medication
•Antidepressant medications
Salivary
hypofunction
•Saliva as modifying factor
•pH of saliva maintained by bicarbonate
•Dependent on salivary flow rate
Acid enters the mouth
Saliva flow rate, pH, buffering capacity increases
Acid is neutralized
•Saliva as modifying factor
•pH of saliva maintained by bicarbonate
•Dependent on salivary flow rate
Acid enters the mouth
Saliva flow rate, pH, buffering capacity increases
Acid is neutralized
Treatment
•Patient
education and counselling
•GERD → refer to physician
•GERD → refer to physician
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