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[Microflora around the bracket by direct bonding system].

M Abe1

  • 1Department of Orthodontics, Nihon University School of Dentistry at Matsudo, Japan.

Nichidai Koku Kagaku = Nihon University Journal of Oral Science
|December 1, 1990
PubMed
Summary
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Dental plaque microflora near orthodontic brackets differs in patients with caries. Specifically, caries-associated plaque shows higher levels of Streptococcus mutans and specific bacterial biotypes, indicating a link between microbial composition and bracket-induced caries.

Area of Science:

  • Oral microbiology
  • Orthodontic materials science
  • Caries research

Context:

  • Orthodontic treatment using direct bonding systems can lead to caries around brackets.
  • Understanding the plaque microflora composition is crucial for preventing and managing these lesions.

Purpose:

  • To investigate the influence of microflora in plaque at the bracket edge in direct bonding systems.
  • To determine the causes of caries induced around brackets during orthodontic treatment.

Summary:

  • Plaque samples from orthodontic patients were analyzed and compared to controls.
  • Patients with caries around brackets (Group B) showed higher levels of gram-positive cocci and Streptococcus mutans compared to those without caries (Group A) and controls.
  • Actinomyces and Streptococcus were prevalent, with Lactobacillus being rare. Biotype I (S. mutans) and Biotype IV (S. sobrinus) were identified, with Biotype IV associated with caries.

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Impact:

  • Findings highlight specific bacterial profiles associated with caries development in orthodontic patients.
  • This research can inform targeted preventive strategies and improved oral hygiene protocols during orthodontic treatment.
  • Understanding the role of specific bacterial genera and biotypes aids in predicting and mitigating caries risk.