Periodotnal Cosiderations - Occlusion And Periodontal Tissues Flashcards
What affects the mobility of a tooth?
Height and width of the PDL
Number, shape and length of roots
Inflammation present
Define excessive occlusal force
Force that exceeds reparative capacity of the periodontium resulting in trauma or excessive toothwear
Define occlusal trauma
Injury resulting in tissue changes within the periodontium e.g. PDL, alveolar bone or cementum
This is as a result of occlusal forces
When can’t tooth mobility be accepted
It is progressively increasing
It is symptomatic
It impedes on restorative treatment
How can tooth mobility be avoided?
Control of plaque induced inflammation
Correction of the occlusion to prevent heavy forces
Splinting
What response would the healthy periodontium produce to heavy occlusal forces
PDL width increases until forces can be adequately dissipated, PDL width should then stabilise
Mobility increased as a result
If occlusal demand is reduced then PDL will stabilise
If demand is too great the PDL width can continue to increase until they fail to stabilise
What are some side FX of high occlusal forces on the pressure side?
Decrease in vascularity
Hyalinisation or necrosis of the PDL
Haemorrhage
Bone resorption
Root resorption
What are some side fx of occlusal forces on the tension side
Elongation of PDL
Apposition of alveolar bone and cementum
What is secondary occlusal trauma?
Injury resulting in tissue changes caused by normal or excessive occlusal forces, in teeth with reduced periodontal support
Occurs in prescience of attachment loss and bone loss
What may be some clinical signs of occlusal trauma
Progressive mobility
Fremitus
Wear facets in teeth
Tooth fracture
Tooth sensitivity
Widening of PDL
When might one splint the teeth? What are some drawbacks?
Mobility is due to advanced loss of attachment
Mobility is causing discomfort or difficulty in chewing
Teeth need stabilised for debridement
Can hinder hygiene and plaque control
Does not hinder the disease progress
Is a last resort
