Eefects Of Ageing

Question 1

What are Effects of ageing

Answer 1

Each dental arch’s mesial movement is linked to the wear of approximate surfaces and is a process of local adjustment between neighbouring teeth.

Question 2

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Abrasion of enamel

Answer 2

Occlusal abrasion results from chewing or biting hard food or objects
•Results in flattened cusps on posterior teeth and worn incisal edges on anterior teeth

Question 3

Erosion of enamel

Answer 3

Loss of tooth structure from chemical means
•Affects smooth and occlusal surfaces
•Can result from
–excessive intake of acid
–excessive intake of carbonated drink
–regurgitated stomach acids

Question 4

Recession of the gingiva

Answer 4

Epithelial attachment between gums and teeth retreats towards root of the tooth
•Can reach the cementoenamel junction exposing it to the oral cavity
•Area of attachment of periodontal ligament is reduced
•Margins of the sockets are resorbed

Question 5

Recession of the gingiva

Answer 5

Periodontal disease
–Tooth position
–Abrasion by incorrect tooth brushing
–Abfraction
–Ageing
–Tight frenal attachments

Question 6

The Edentulous Mouth

Answer 6

The oral cavity is edentulous
–Before the eruption of deciduous teeth
–After the loss of the permanent teeth

Question 7

Changes in the oral cavity following loss of permanent teeth

Answer 7

Alveolar bone surrounding and supporting teeth resorbs in both mandible and maxilla
•Jaws approximate closer to each other when the mouth is closed
•This results in changes in facial and intra-oral relationships
•Reduction in facial height

Question 8

What happens to the teeth

Answer 8

Decreased pulp results in decreased sensitivity which causes decreased warning of damage or decay
•Loosening teeth and receding gingiva results in increased periodontal disease
•All result in pain, changes to nutrition, taste, speech, systemic infection, aesthetic effects, economic effects
●Prevention of tooth loss is therefore very important

Question 9

Muscle

Answer 9

A decrease in muscle strength and coordination results in decreased swallowing and increased chance of choking
•Increase in sores and injury, due to medication and/or dentures (xerostomia), causes pain, discomfort and altered nutrition

Question 10

What happens to the internal structure

Answer 10

As a person ages the size of the pulp cavity will reduce as secondary dentine is laid down.
•This will result in the reduction of the pulp horns and a gradual restriction to the blood flow to the vital dentine

Question 11

Impact on appliances design process

Answer 11

Retention
Stability
Clasping
Path of insertion
Useable undercuts
Seats/rests cut into teethSupporting structures
Ability to use and maintain