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Related Concept Videos

Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

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A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial...
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The Oral Microbiota01:27

The Oral Microbiota

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The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...
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Development of the Oral Microbiota01:28

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The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...
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Microbiota of the Respiratory Tract01:29

Microbiota of the Respiratory Tract

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The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more...
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The Skin Microbiota01:27

The Skin Microbiota

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The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
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Biofilms01:29

Biofilms

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Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
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Related Experiment Video

Updated: May 4, 2026

Oral Biofilm Analysis of Palatal Expanders by Fluorescence In-Situ Hybridization and Confocal Laser Scanning Microscopy
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Dental abscess: A microbiological review.

Shweta1, S Krishna Prakash1

  • 1Department of Microbiology, Maulana Azad Medical College, New Delhi, India.

Dental Research Journal
|December 19, 2013
PubMed
Summary

Dental abscess infections are polymicrobial, involving various bacteria. While surgery often suffices for localized cases, severe infections may require antimicrobials, highlighting the need for better clinical trials on dental abscess treatment.

Keywords:
Antibiotic sensitivitydental abscessdiagnosismicrobiologytherapy

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Area of Science:

  • Oral microbiology
  • Infectious diseases
  • Surgical pathology

Background:

  • Dental abscesses are common infections influenced by bacterial virulence, host immunity, and anatomy.
  • Spread of dental abscesses can cause severe morbidity and mortality.
  • Acute dental abscesses feature a mix of anaerobic and facultative anaerobic bacteria, with novel pathogens identified via non-culture methods.

Purpose of the Study:

  • To review the microbiology of acute dentoalveolar abscesses.
  • To discuss current and needed treatment strategies for dental abscesses.
  • To highlight the impact of advanced diagnostic methods on understanding dental abscesses.

Main Methods:

  • Review of current literature on dental abscess microbiology and treatment.
  • Analysis of bacterial species involved in acute dentoalveolar abscesses, including novel findings from non-culture techniques.
  • Evaluation of treatment outcomes for surgical and antimicrobial interventions.

Main Results:

  • Acute dental abscesses are polymicrobial, involving strict anaerobes and facultative anaerobes.
  • Non-culture techniques reveal numerous uncultivable and fastidious organisms as potential pathogens.
  • Localized abscesses typically respond to surgical treatment; antimicrobials are reserved for severe, spreading infections.

Conclusions:

  • Effective management of dental abscesses depends on understanding their complex polymicrobial nature.
  • Improved culture and diagnostic methods are crucial for accurate identification of pathogens.
  • High-quality clinical trials are needed to establish optimal treatment protocols for dental abscesses.