Alveolar Bone: Structure and Health

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Questions and Answers

What is the primary function of alveolar bone?

  • To protect the underlying nerve tissue
  • To support the teeth within the dental arch (correct)
  • To form the outer layer of the oral cavity
  • To facilitate blood circulation in the gums

Which of the following structures is NOT part of the periodontium?

  • Cementum
  • Gingiva
  • Dental pulp (correct)
  • Periodontal ligament

How does the structure of alveolar bone change in response to periodontal disease?

  • It transforms into cementum
  • It remains unchanged regardless of health status
  • It undergoes resorption and decreases in density (correct)
  • It becomes denser and more compact

At what stage does alveolar bone develop in relation to teeth?

<p>In the fetus, as teeth are developing (A)</p> Signup and view all the answers

What is the relevance of radiographic assessment in the context of periodontal disease?

<p>It is essential for observing changes in alveolar bone levels (B)</p> Signup and view all the answers

What is one primary function of the alveolar bone?

<p>Shock absorption (A)</p> Signup and view all the answers

What anatomical feature maintains the relationship between the cemento-enamel junction (CEJ) and alveolar bone crest in healthy conditions?

<p>Height of 1 to 2mm (D)</p> Signup and view all the answers

Sharpey's fibers are primarily associated with which aspect of alveolar bone?

<p>Attachment to the periodontal ligament (D)</p> Signup and view all the answers

What condition is identified by the resorption of alveolar bone associated with periodontal disease?

<p>Periodontitis (B)</p> Signup and view all the answers

Which statement about the remodeling of alveolar bone is true?

<p>Remodeling is a continuous and rapid process (C)</p> Signup and view all the answers

How does healthy alveolar bone appear in relation to the teeth?

<p>With a healthy pocket depth of 1 to 2mm (D)</p> Signup and view all the answers

What is an observable effect of periodontal disease on alveolar bone?

<p>Bone resorption leading to reduced height (C)</p> Signup and view all the answers

What material were Inuit snow goggles historically made from?

<p>Carved bone (C)</p> Signup and view all the answers

What is the term used to describe the condition where tissue around a tooth has worn away below the gum line?

<p>Dehiscence (D)</p> Signup and view all the answers

What is one potential cause of dehiscence?

<p>Trauma (D)</p> Signup and view all the answers

In orthodontic treatment, what might result from teeth being moved too quickly?

<p>Root exposure (A)</p> Signup and view all the answers

What condition is characterized by a defect that causes the root of the tooth to be visible?

<p>Fenestra7on (C)</p> Signup and view all the answers

Which of the following is a common risk factor for gingival recession?

<p>Aggressive brushing technique (B)</p> Signup and view all the answers

What does trauma to the teeth potentially affect in orthodontic treatment?

<p>Bone remodeling (C)</p> Signup and view all the answers

In the context of gingival health, what is a possible outcome of fenestration?

<p>Root exposure (D)</p> Signup and view all the answers

Which condition is associated with tissue loss around teeth due to orthodontic complications?

<p>Dehiscence (B)</p> Signup and view all the answers

What is one primary function of alveolar bone?

<p>To support dental structures (A)</p> Signup and view all the answers

Which characteristic is used to assess the transition from healthy to diseased alveolar bone?

<p>Radiographic features and density (A)</p> Signup and view all the answers

What was the aim of the unit regarding alveolar bone in the learning outcomes?

<p>To outline clinical and radiographic anatomy of alveolar bone (B)</p> Signup and view all the answers

Why is radiographic assessment important in periodontal disease?

<p>It assesses the extent of alveolar bone loss (A)</p> Signup and view all the answers

What is an expected activity before the teaching session on alveolar bone?

<p>Conducting a self-assessment on alveolar bone anatomy (B)</p> Signup and view all the answers

What is the term used for the multiple cavities in the alveolar bone?

<p>Alveoli (A)</p> Signup and view all the answers

Which structure forms the outer boundary of the alveolar bone?

<p>Outer (buccal) alveolar plate (A)</p> Signup and view all the answers

What is the histological name for the tissue that covers the alveolar bone?

<p>Gingiva (D)</p> Signup and view all the answers

Which structure separates teeth in the same arch?

<p>Interdental septum (A)</p> Signup and view all the answers

What is the purpose of the interradicular septum?

<p>Separates the roots of teeth (C)</p> Signup and view all the answers

Which option describes the layer of alveolar bone adjacent to the tongue?

<p>Inner (lingual) alveolar plate (A)</p> Signup and view all the answers

Which anatomical feature would usually be found between adjacent teeth?

<p>Interdental septum (D)</p> Signup and view all the answers

Which structure is not a part of the alveolar bone anatomy?

<p>Gingiva (A)</p> Signup and view all the answers

Flashcards

Alveolar Bone

Bone that surrounds and supports teeth; only present when teeth exist.

Alveolar Bone Function

Supports teeth, protects tooth structure, absorbs shock from chewing, attaches via Sharpey's Fibers.

Healthy Alveolar Bone Height

The distance between the cemento-enamel junction and alveolar bone crest in a healthy periodontium.

Periodontitis

Destroys tooth-supporting structures like alveolar bone, leading to bone loss.

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Dehiscence

Bone loss exposing the root surface. Can be from trauma or recession.

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Fenestration

Bone loss creating a 'window' over the root surface.

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Radiographic Assessment

Visualizing bone loss to diagnose and treat periodontal disease.

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Pocket Depth

Indicates the health of gum tissue and supporting bone structures.

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Periodontal Disease Process

Bacteria accumulation leads to supporting tissue deterioration and bone resorption.

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Radiographs & Bone Loss

Images showing amount of bone loss, guiding treatment.

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Sharpey's Fibers

Fibers connecting cementum/bone, crucial attachments.

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Alveolar Bone Remodeling

Rapid due to teeth movement and chewing.

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CEJ to Bone Crest Distance

Indicator of healthy attachment.

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Increased Tooth Mobility

Mobility increases with bone loss.

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Fenestration Cause

Loss on facial or lingual surface often due to trauma.

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Importance of Radiographic Anatomy

Proper diagnosis and treatment depend on it.

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Healthy Pocket Depth range

From CEJ to bone crest in healthy gums.

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Radiographs guiding treatment

Essential to visualize bone loss extent.

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Dehiscence Effect

Loss results in tooth movement.

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Fenestration Prevalence

Common radiographic finding.

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Pocket Deepening

Deepening of this is a sign of periodontitis.

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Bone Resorption

Deterioration leads to mobility.

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Alveolar Bone - Functional role

Act as shock absorber.

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Alveolar Bone - Relation to Teeth

Alveolar bone is closely associated with

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Periodontal Disease - Process

Inflammation and supporting tissue disintegration

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Alveolar Bone - Attachement.

Attachment for Sharpey's fibers.

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Alveolar Bone - Process.

Rapid remodelling and mastication.

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Dehiscence - Bone

Bone loss exposing root surface.

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Radiographic assessment

Provides insights into bone loss.

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Bone Resorption.

Bacteria deteriorates it

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Study Notes

Alveolar Bone: Structure and Function

  • Alveolar bone, also called alveolar process, is only present where there are teeth.
  • It's formed in relation to teeth.
  • It plays a crucial role in supporting teeth and features a continuous rapid remodeling process due to eruption and mastication.
  • The height of the cemento-enamel junction to bone crest is between 1 and 2mm
  • Its function is to support teeth with a strong attachment, protect the tooth structure, act as a shock absorber, and provide attachment through Sharpey's fibers.

Alveolar Bone: Health to Disease

  • A healthy alveolar bone has a height of 1 to 2mm between the cemento-enamel junction and the alveolar bone crest.
  • This height is a key indicator of periodontal health.
  • With a healthy periodontium, there is no pocketing around the tooth.
  • Periodontitis is a disease that destroys the supporting structures of the teeth, including the alveolar bone.
  • In periodontitis, the alveolar bone resorbs, or deteriorates, leading to increased pocket depth, tooth mobility, and eventual tooth loss.
  • Two common defects in alveolar bone are dehiscence and fenestration.

Dehiscence

  • Dehiscence is a defect that involves the loss of alveolar bone, leaving the root surface exposed.
  • It can happen with trauma or recession, often resulting in the tooth moving forward and becoming sensitive.

Fenestration

  • Fenestration is the loss of alveolar bone that exposes the tooth root on the facial or lingual surfaces.
  • It's usually a result of trauma and can be a common finding.

Radiographic Relevance

  • Radiographic assessment is key for diagnosing periodontitis, as it allows for visualization of bone loss and other abnormalities.
  • Understanding the radiographic anatomy is important for forming a proper diagnosis and treatment plan.

Periodontal Disease in Detail

  • Pocket depth is an indicator of the health of the gum tissue (gingiva) and surrounding bone structures.
  • A healthy gum tissue is firmly attached to the tooth, maintaining a pocket depth of 1-2mm from the cemento-enamel junction (CEJ) to the alveolar bone crest.
  • With periodontal disease, bacteria accumulate in the pocket, leading to inflammation and the deterioration of the supporting tissues (gingiva, cementum and alveolar bone).
  • The bone resorption results in the deepening of the pockets and subsequent tooth mobility.
  • Radiographic images are essential to visualize the extent of bone loss and guide treatment with appropriate interventions to address the affected areas.

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