Podcast
Questions and Answers
What is the function of the interdental ligament?
What is the function of the interdental ligament?
The interdental ligament is a type of tissue that connects neighbouring teeth through gingival mucosa. It forms a connection so teeth can resist rotational forces & keep them in alignment.
What are the components of the ground substance?
What are the components of the ground substance?
The ground substance consists of collagen fibres, water, tissue fluid, and has high pressure. It is responsible for the binding and support of the PDL.
Describe the function of the ground substance.
Describe the function of the ground substance.
The ground substance functions in exchange of metabolites, ion and water binding, and creates the structure of the tissue. It also contributes to the tooth support and binding mechanism.
The width of the periodontal ligament decreases with age.
The width of the periodontal ligament decreases with age.
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What is the effect of aging on the PDL?
What is the effect of aging on the PDL?
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Which factors are considered in the clinical considerations of the PDL?
Which factors are considered in the clinical considerations of the PDL?
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Study Notes
Interdental Ligament/Transseptal Fibres
- Important fibres which run through gingival mucosa to connect neighbouring teeth
- Insert interdentally into cervical cementum of neighbouring tooth
- Fibres travel from cementum to cementum with no bony attachment
- Resist rotational forces & keep teeth in alignment
Ground Substance
- Collagen fibres
- Water 70%
- Tissue fluid pressure high, 10mmHg
- Tooth support & binding mechanism
Function
- Exchange of metabolites
- Ion & water binding
- Fibre orientation
Age Changes
- Decrease in cells
- Increase in fibrous tissue
- Decrease in vascularity, mitotic activity
- Narrowing of width of PDL
- Scalloping seen on calcified tissues (bone, cementum) - PDL attached to peaks of these scallops
Clinical Considerations
- Pressure
- Trauma
- Infection
- Ortho
- Restorative
- Natural vs implant
- Lost tooth
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Description
This quiz covers the structure and function of interdental ligaments and the ground substance within periodontal tissue. Explore the important roles these components play in supporting teeth, the changes that occur with age, and the clinical considerations related to periodontal treatment. Test your knowledge on both anatomical and functional aspects of these vital structures.
