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Questions and Answers
Which of the following is a consequence of osteoporosis in alveolar bone?
Which of the following is a consequence of osteoporosis in alveolar bone?
What happens to trabecular bone as a result of aging?
What happens to trabecular bone as a result of aging?
Which feature is NOT typically associated with the radiographic appearance of alveolar bone?
Which feature is NOT typically associated with the radiographic appearance of alveolar bone?
What characteristic of the alveolar bone indicates a pathological change?
What characteristic of the alveolar bone indicates a pathological change?
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Which of the following structures is a key feature evaluated in the radiographic appearance of alveolar bone?
Which of the following structures is a key feature evaluated in the radiographic appearance of alveolar bone?
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What is the primary function of alveolar bone?
What is the primary function of alveolar bone?
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Which component is NOT part of the periodontium?
Which component is NOT part of the periodontium?
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How does alveolar bone relate to tooth development?
How does alveolar bone relate to tooth development?
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What structural characteristic is shared between alveolar bone and basal bone?
What structural characteristic is shared between alveolar bone and basal bone?
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What type of assessment is emphasized for understanding periodontal disease?
What type of assessment is emphasized for understanding periodontal disease?
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Which of the following conditions is characterized by alterations in alveolar bone?
Which of the following conditions is characterized by alterations in alveolar bone?
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At what location is alveolar bone typically found?
At what location is alveolar bone typically found?
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What does the term 'demineralised section of tooth' refer to in relation to alveolar bone?
What does the term 'demineralised section of tooth' refer to in relation to alveolar bone?
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What is the primary function of alveolar bone?
What is the primary function of alveolar bone?
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What is the significance of Sharpey's fibres in the alveolar bone?
What is the significance of Sharpey's fibres in the alveolar bone?
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What is the normal height of the Cemento-Enamel Junction (CEJ) to alveolar bone crest in healthy individuals?
What is the normal height of the Cemento-Enamel Junction (CEJ) to alveolar bone crest in healthy individuals?
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Which condition is characterized by the loss of attachment between the gingiva and teeth?
Which condition is characterized by the loss of attachment between the gingiva and teeth?
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What defines a dehiscence defect in periodontal health?
What defines a dehiscence defect in periodontal health?
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What is the distinguishing feature of a fenestration defect in alveolar bone?
What is the distinguishing feature of a fenestration defect in alveolar bone?
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How does continuous remodeling of alveolar bone occur?
How does continuous remodeling of alveolar bone occur?
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Which of these is NOT a function of alveolar bone?
Which of these is NOT a function of alveolar bone?
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What radiographic feature is indicative of healthy alveolar bone?
What radiographic feature is indicative of healthy alveolar bone?
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Which condition can be determined by assessing the height of the alveolar bone crest on radiographs?
Which condition can be determined by assessing the height of the alveolar bone crest on radiographs?
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Which of the following is NOT a characteristic of alveolar bone in a disease state?
Which of the following is NOT a characteristic of alveolar bone in a disease state?
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What is the role of Dental Panoramic Tomography (DPT) in dentistry?
What is the role of Dental Panoramic Tomography (DPT) in dentistry?
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Which of the following could indicate worsening periodontal disease?
Which of the following could indicate worsening periodontal disease?
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How does the alveolar bone support dental health?
How does the alveolar bone support dental health?
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Which radiographic finding would likely be present in a patient with advanced periodontitis?
Which radiographic finding would likely be present in a patient with advanced periodontitis?
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What does the presence of a calculus spur typically indicate?
What does the presence of a calculus spur typically indicate?
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Study Notes
Alveolar Bone: Structure and Function
- Alveolar bone is a specialized bone that only forms where there are teeth.
- It is structurally similar to the basal bone of the maxilla and mandible.
- It undergoes continuous remodeling due to tooth eruption and mastication.
- Its primary functions include:
- Support: Provides structural support for teeth.
- Protection: Protects the tooth roots.
- Attachment: Provides attachment for the periodontal ligament via Sharpey's fibers.
- Shock absorber: Helps absorb the forces of chewing.
Alveolar Bone: Health to Disease
- In a healthy state, the distance between the cemento-enamel junction (CEJ) and alveolar bone crest is 1-2mm.
- Periodontitis: A disease that affects the tissues surrounding the teeth, leading to bone loss and tooth loss.
- Dehiscence: A defect in the alveolar bone where the root is exposed, but not the crown.
- Fenestration: A defect in the alveolar bone where the root is exposed, but covered by gingiva.
Age Changes to Alveolar Bone
- Osteoporosis: Decreased bone density, leading to bone loss.
- Increased Brittleness: Reduced water content, causing the bone to become more brittle.
- Thin Trabecular Sponge Bone: The spongy bone becomes thinner with wider marrow spaces.
Alveolar Bone: Radiographic Appearance
- Lamina Dura: A thin, radiopaque line surrounding the tooth root, representing the alveolar bone proper.
- Periodontal Ligament Space: A radiolucent space between the tooth root and the lamina dura, representing the periodontal ligament
- Cancellous Bone: Also known as spongy bone, appears radiolucent and is found beneath the lamina dura.
Radiographic Features of Alveolar Bone in a Healthy State
- Alveolar Crest: Appears as a radiopaque line that is parallel to the CEJ, with a distance of 1-2mm.
Radiographic Features of Alveolar Bone in a Diseased State
- Calculus Spur: A radiopaque deposit on the tooth root, indicating calculus.
- Widening of Periodontal Ligament Space: A wider radiolucent space than normal, indicating bone loss.
- Loss of Bone in Furcation Region: Radiolucent areas in the furcation, indicating bone loss.
Radiographic Relevance of Alveolar Bone:
- Diagnosis of Periodontitis: Radiographs help assess the severity of periodontitis by measuring bone loss.
- Foundation of Dental Health: Alveolar bone plays a crucial role in supporting and protecting the teeth.
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