Restorative considerations 2

Question 1

what factors determine tooth mobility

Answer 1

• width of the PDL
• height of the PDL
• inflammation
• number, shape and length of roots

Question 2

when is tooth mobility a negative

Answer 2

• when it is progressively increasing
• when it gives rise to symptoms
• when it creates difficulty with restorative treatment

Question 3

how can you reduce tooth mobility

Answer 3

• control plaque induced inflammation
• correct occlusal relations
• splinting

Question 4

what is primary occlusal trauma

Answer 4

an injury resulting in tissue changes from excessive occlusal forces appleid to a tooth or teeth with normal periodontal support

It occurs in the presence of normal clinical attachment levels, normal bone levels and excessive occlusal force

Question 5

what is the response of a healthy periodontium to primary occlusal trauma

Answer 5

• PDL width increases until forces can be adequately dissipated and then the PDL width should stabilise
• tooth mobility will increase as a result
• this is a successful adaptation to increased demand
• if demand reduces, the PDL should return to normal