Podcast
Questions and Answers
What is the primary composition of dental calculus regarding its organic and inorganic components?
What is the primary composition of dental calculus regarding its organic and inorganic components?
- 0-10% organic, 90-100% inorganic
- 50-70% organic, 30-50% inorganic
- 30-50% organic, 50-70% inorganic
- 10-30% organic, 70-90% inorganic (correct)
Which of the following correctly describes a characteristic of subgingival calculus compared to supragingival calculus?
Which of the following correctly describes a characteristic of subgingival calculus compared to supragingival calculus?
- Subgingival calculus is typically more mineralized than supragingival calculus. (correct)
- Subgingival calculus is easier to remove than supragingival calculus.
- Subgingival calculus has a lighter color than supragingival calculus.
- Subgingival calculus forms within 48 hours of biofilm development.
Which of the following locations is least likely for dental calculus accumulation?
Which of the following locations is least likely for dental calculus accumulation?
- Gingival crevice
- Prosthesis areas
- Flat occlusal surfaces (correct)
- Root surface with periodontal pockets
What is the crystalline structure of dental calculus primarily composed of?
What is the crystalline structure of dental calculus primarily composed of?
In the formation of dental calculus, what is the typical time frame for mineralization after plaque biofilm formation?
In the formation of dental calculus, what is the typical time frame for mineralization after plaque biofilm formation?
What type of attachment allows calculus to firmly adhere to a tooth surface?
What type of attachment allows calculus to firmly adhere to a tooth surface?
Which of the following statements is true about the ages of dental calculus?
Which of the following statements is true about the ages of dental calculus?
What role does dental calculus play in dental disease progression?
What role does dental calculus play in dental disease progression?
What role does the element in the organic matrix play in calculus formation?
What role does the element in the organic matrix play in calculus formation?
Which substances released from bacteria promote the calcification process?
Which substances released from bacteria promote the calcification process?
What is the main product formed from insoluble calcium phosphate crystals during the process of calcification?
What is the main product formed from insoluble calcium phosphate crystals during the process of calcification?
Which factor does NOT contribute to variations in the rate of calculus formation?
Which factor does NOT contribute to variations in the rate of calculus formation?
How are individuals broadly classified based on their calculus formation rate?
How are individuals broadly classified based on their calculus formation rate?
Which method is NOT typically used for the detection of calculus?
Which method is NOT typically used for the detection of calculus?
What might be a significant concern for clinicians in relation to calculus?
What might be a significant concern for clinicians in relation to calculus?
Which option best describes what occurs during the process of calculus formation?
Which option best describes what occurs during the process of calculus formation?
Study Notes
Dental Calculus
- Dental Calculus is mineralized bacterial biofilm
- Forms 48 hours to 2 weeks after plaque biofilm formation
- Composition is approximately 10-30% organic and 70-90% inorganic
- Organic content includes plaque bacteria, dead epithelial cells, white blood cells (WBCs)
- Inorganic content includes calcium, phosphate, magnesium, carbonate
- Calcium brushite, octocalcium phosphate, hydroxyapatite, and magnesium whitlockite are crystals found in dental calculus
- Crystalline content can vary based on location (anterior/posterior), supra/sub location, age of calculus, and individual
- Common locations for dental calculus include: gingival crevice, root surface with periodontal pockets, prosthesis, restoration ledges, imbricated teeth, occlusal surfaces
- Supra-calculus is located above the gum line, and sub-calculus is found below the gum line
- Calculus attaches to the tooth surface through acquired pellicle, penetration into enamel, cementum, or dentine, or by adhering to tooth irregularities like previous instrumentation
- The formation of dental calculus is influenced by organic matrix elements acting as seeding agents, and phosphatases and proteases released by bacteria degrade calcification inhibitors in saliva
- Insoluble calcium phosphate crystals coalesce to form calcified mass of plaque called calculus
- Calculus formation rate varies based on individual, tooth, and timeframe
- People can be categorized as heavy, moderate, slight, or non-calculus formers
- Detection of calculus can be done visually and with radiographs
- Calculus can impact the progression of periodontal disease
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Description
This quiz explores the characteristics and composition of dental calculus, including its formation and variations based on location and individual factors. Understand the differences between supra-calculus and sub-calculus and their implications on oral health.
