37 Questions
Which of the following bacterial species is closely associated with periodontal lesions?
Tannerella forsythia
How many bacterial species from periodontal pockets have been identified?
Over 500
Which type of bacteria are components of the normal native flora of the human oral environment?
Most virulent bacteria
Which bacterial species is not categorized based on Gram staining characteristics?
Eubacterium sp
Which bacterial species can be attributed a probable causative role in periodontal disease?
Porphyromonas gingivalis
Which bacterial species is a component of the normal native flora of the human oral environment?
Aggregatibacter actinomycetemcomitans
What is the primary treatment for periodontal infections?
Mechanical debridement
Why is it important to carefully select antibiotics for periodontal therapy?
To prevent bacterial resistance
What is the key advantage of systemic antibiotherapy in treating periodontal infections?
Reaching microorganisms colonizing extra-dental sites
What is a disadvantage of systemic antibiotherapy in managing periodontal infections?
Inability to achieve high concentration in the gingival crevicular fluid
What does the arrow looping back from 'Re-evaluation' to 'Examination' suggest in the process flow for periodontal treatment?
The possibility of repeated or adjusted treatment protocols
Why should systemic antibiotic therapy be carefully considered in the treatment of periodontal infections?
To prevent bacterial resistance
What is the main reason for Gram-negative bacteria to display significant resistance to antibiotics?
Their biofilm structure creates a physical barrier that hinders antibiotic penetration
Which bacteria have a very strong association with periodontal diseases based on the provided list?
Aggregatobacter actinomycetemcomitans and Tannerella forsythia (Bacteroides forsythus)
How do barbiturates interact with metronidazole and tetracycline?
They decrease plasma protein availability
What is the main challenge posed by biofilm structures in relation to antibiotic effectiveness?
Biofilms create a physical barrier that hinders the penetration of antibiotics
In what situations may systemic antibiotherapy be considered?
In cases of continuous loss of periodontal attachment despite standard periodontal therapy
How can the effectiveness of antibiotics against biofilms be enhanced?
By using biofilm-penetrating agents or mechanical removal to disorganize the biofilm structure
What is the main purpose of systemic antibiotherapy in managing periodontal infections?
To reduce the risk of systemic health complications
In which cases is systemic antibiotherapy often indicated?
For acute and severe periodontal lesions
Which type of infection occurs when normal flora causes an infection in an individual with compromised defenses?
Opportunistic infection
What characterizes true infections in periodontal disease?
They are caused by rare pathogens not found in healthy individuals
What is essential before prescribing antibiotic therapy in the context of periodontal disease?
An accurate clinical diagnosis and prior meticulous scaling and root planing
What is recommended to enhance the efficacy of antibiotic treatment in periodontal disease?
Disruption of biofilm structure to allow better penetration and diffusion of the antibiotic
What is the purpose of using sterile paper tips or curettes in the sampling method?
To prevent contamination of the samples from the periodontal pockets
Why is it important to use an anaerobic transport medium when collecting samples for bacterial analysis?
To transport the samples in a medium that maintains the viability of anaerobic bacteria
What distinguishes molecular genetics techniques like PCR from culture methods in bacterial analysis?
Molecular techniques can detect bacterial DNA even if the bacterial cells are no longer alive
What is a key limitation of molecular techniques in bacterial analysis?
They cannot determine which antibiotics the bacteria are sensitive to
For which condition is systemic antibiotic therapy NOT indicated?
Patients with stable chronic periodontitis
What is a contraindication for systemic antibiotic therapy in periodontal patients?
Patients with gingivitis
What is the primary treatment for refractory periodontitis associated with Peptostreptococques and β-hémolytique bacteria?
Metronidazole + Amoxicillin
Which antibiotic regimen is suggested for treating early occurrence periodontitis or refractory periodontitis associated with P. gingivalis and A. actinomycetemcomitans?
Metronidazole + Amoxicillin
In the case of acute necrotizing periodontal disease, which antibiotic may be used as needed alongside debridement and oral hygiene instruction?
Metronidazole
What is the primary antibiotic choice for patients allergic to β-lactamines in the case of acute periodontal abscess?
Clindamycin
Which antibiotic regimen is the second choice for acute periodontal abscess?
Metronidazole + Augmentin
What is the primary choice of antibiotic regimen for acute necrotizing periodontal disease?
Metronidazole + Amoxicillin or Augmentin
What alternative treatment can be used for refractory periodontitis associated with Peptostreptococques and β-hémolytique bacteria?
Amoxicillin and clavulanate potassium
Test your knowledge about the adjunctive benefits of controlled delivery systems and antibiotic therapy in periodontal treatment. Explore the role of antibiotics as adjuncts to usual periodontal treatments and their strategic use in managing periodontal disease.
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