This high-yield revision note on Microbiology for INBDE: Viruses & Bacteria Causing Oral Infections covers everything examiners typically test under Microbiology — structured as quick-reference tables, clinical correlations, mnemonics and previous-year-style high-yield points. It's built for last-mile revision before NEET MDS, INI-CET MDS and INBDE, so you can scan it in minutes instead of re-reading a whole textbook chapter.
| Organism | Disease/Association |
|---|---|
| Streptococcus mutans | The PRIMARY etiologic agent of dental caries - acidogenic and aciduric, produces glucan via glucosyltransferase for plaque adhesion |
| Actinomyces israelii | Actinomycosis - characterized by "sulfur granules", a chronic suppurative infection often occurring in the cervicofacial region, classically following dental extraction/trauma |
| Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola | The "Red complex" - the bacterial group most strongly associated with chronic periodontitis |
| Aggregatibacter actinomycetemcomitans (AA) | Strongly associated with localized aggressive (juvenile) periodontitis |
| Fusobacterium species + spirochetes (Borrelia vincentii) | The fusospirochetal complex responsible for necrotizing ulcerative gingivitis (ANUG) |
| Herpes simplex virus type 1 (HSV-1) | Primary herpetic gingivostomatitis (typically in children); recurrent herpes labialis from reactivation of latent virus in the trigeminal ganglion |
| Coxsackievirus A | Herpangina and hand-foot-mouth disease |
| Epstein-Barr virus (EBV) | Oral hairy leukoplakia, Burkitt's lymphoma, and infectious mononucleosis |
| Candida albicans | Oral candidiasis (pseudomembranous "thrush", erythematous forms, angular cheilitis) - an opportunistic organism associated with immunosuppression, antibiotic use, and denture-wearing |
| Human papillomavirus (HPV types 16, 18) | Associated with oropharyngeal squamous cell carcinoma; HPV 6 and 11 cause oral papilloma/condyloma |
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