Related Experiment Video
Updated: Aug 13, 2026

11:15
In Situ Detection of Bacteria within Paraffin-embedded Tissues Using a Digoxin-labeled DNA Probe Targeting 16S rRNA
Published on: May 21, 2015
[Anaerobic microbes in perimandibular inflammation]
Revue De Stomatologie Et De Chirurgie Maxillo-Faciale
|January 1, 1984
Summary
Perimandibular inflammation is often caused by anaerobic Gram-negative bacteria. Dental bacterial flora showed the highest sensitivity to davercin among six tested antibiotics.
Area of Science:
- Oral microbiology
- Infectious diseases
- Pharmacology
Background:
- Perimandibular inflammation presents a complex clinical challenge.
- Understanding the causative bacterial agents and their antibiotic susceptibility is crucial for effective treatment.
Purpose of the Study:
- To identify the bacterial flora associated with perimandibular inflammation.
- To determine the antibiotic resistance patterns of these bacteria.
- To evaluate the efficacy of specific antibiotics, including davercin.
Main Methods:
- Bacteriological examinations were performed on 16 patients with perimandibular inflammation.
- Isolated bacterial strains (73 total: 47 anaerobic, 26 aerobic) were tested for resistance to six antibiotics: davercin, erythromycin, penicillin, ampicillin, tetracycline, and chloramphenicol.
- Gram staining differentiated bacterial strains (47 Gram-negative, 26 Gram-positive).
Main Results:
- Anaerobic Gram-negative bacteria were identified as the primary cause of perimandibular inflammatory lesions.
- Streptococcus viridans was found more frequently in patients than in healthy individuals.
- Bacterial flora of dental origin demonstrated greater sensitivity to davercin compared to the other five antibiotics tested.
Conclusions:
- Anaerobic Gram-negative bacteria are key pathogens in perimandibular inflammation.
- Davercin exhibits promising efficacy against the prevalent bacterial flora in dental infections.
- Targeted antibiotic therapy, potentially involving davercin, may improve treatment outcomes for perimandibular inflammation.
Related Concept Videos
Bacterial Phylum Spirochaetes
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased by a...
Bacterial Phylum Actinobacteria
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
Microbes and Methanogenesis
Methanogenesis is a critical microbial process in anaerobic ecosystems responsible for the biological production of methane, a potent greenhouse gas and valuable biofuel. This metabolic pathway is primarily facilitated by methanogenic archaea, which thrive in anoxic environments such as wetlands, sediments, and animal gastrointestinal tracts. The absence of oxygen in these habitats prevents aerobic respiration, thereby favoring alternative biochemical pathways for organic matter degradation.In...
The Oral Microbiota
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...
Development of the Oral Microbiota
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,...
Microbiota of the Respiratory Tract
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 like...

