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Oral infectious diseases

Last updated on 17.07.2020

Oral infectious diseases

Oral Infections:

  • oral cavity is a reservoir for a variety of bacterial flora, in addition to bacteria it may contain fungal and viral microorganisms;
  • most of the oral infections are of odontogenic origin, however, some are due to microbial infections and some are due to systemic diseases with oral manifestations.

Infections categorization

  • fungal viral Bacterial;
  • candida
  • Herpes simplex;
  • Dental caries;
  • aspergillus coxsackie (RNA virus);
  • pharyngitis and tonsilitis;
  • Mumpssyphylis;
  • HIV;
  • Gonorrhea;
  • Measelesosteomylitis.

Bacterial infections

Bacteria are prokaryotes:

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  • lack membrane sure nucleus and cell organelles;
  • incorporates cell wall;
  • thick: Gram-positive; thin: Gram-negative;
  • plasma membrane;
  • most synthesize desoxyribonucleic acid, ribonucleic acid and proteins;
  • several have flagella, and/or pili;
  • healthy folks might carry.

Dental caries

Dental Caries is an irreversible microbial ailment of the calcified tissues of the teeth, described by demineralization of inorganic bit and obliteration of the natural substance of the tooth, which frequently prompts cavitation. The main bacteria causing it is S. Mutans.



  • spirochete globus pallidus (a spirochete);
  • known by silver stains (Warthin-Starry, Steiner, or Leveditti).

What type of syphilis?

  • only congenital syphilis may affect children;
  • acquired in-utero from contaminated mother;
  • Rare today as a result of routine serologic tests.


  • frontal bossing of the skull;
  • short maxilla with high palatal vault;
  • saddle nose.

Hypoplastic teeth (Hutchinson’s incisors and Mulberry molars)

Rhagades: gaps around mouth.

Hutchinson’s group of three:

  •  a mulberry molars + Hutchinson’s incisors;
  • interstitial keratitis (scarred cornea);
  • 8 the nerve deafness.


Penicillin or tetracycline



Mycobacterium tuberculosis, a corrosive quick bacillus. TB is a “granulomatous sickness” portrayed by “granulomatous irritation” which incorporates epithelioid histiocytes + multinucleated mammoth cells + lymphocytes. Primarily a lung infection yet can influence any organ.

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Oral manifestations

  • oral injuries: 20% of patients; typically ulcer of the tongue. N.B. dental;
  • practitioner is in danger of disease from direct contact or bead;
  • contamination. Living beings are seen in 45% of oral washings.


  • INH = isoniazid;
  • Rifampin.

Duration: 1 year and half to two years.


It is an intense, hazardous, infectious bacterial disease The word diphtheria originates from the Greek word for cowhide, which alludes to the extreme pharyngeal layer that is the clinical sign of contamination Causative life form: brought about by gram-positive bacillus, Corynebacterium diphtheria. People being the sole repositories, the contamination essentially spreads by means of bead inward breath. The hatching period ranges from two to five days.


  • fever, discomfort, chills, cerebral pain, anorexia and regurgitating;
  • amplification of provincial lymph hubs, particularly cervical lymph
  • hubs;
  • an inconsistent, yellowish-white slight film secured by grayish.

Follower layer is seen known as “diphtheritic film”.


  • prophylactic dynamic vaccination with diphtheria toxoid;
  • utilization of neutralizing agent in mix with anti-infection agents.

Viral Infections

They consist of:

  • single or twofold strand DNA or RNA;
  • protein coat (capsid);
  • often with an Envelope;
  • obligate intracellular parasites – enters have cell so as to imitate.

Herpes Simplex

It is a double-stranded DNA virus with humans being the only natural reservoir for this virus. There is two types included HSV1 and HSV2. This virus causes a primary infection after that it is taken up by sensory nerves to the trigeminal ganglion where the virus remains in a latent stage.

In children first contact with HSV1 leads to an acute primary infection (acute herpetic gingivostomatitis)”, most frequently in childhood 99% being sub-clinical.

  • primary herpes: Acute herpetic gingivostomatitis;
  • 1% of cases; extreme side effects;
  • сhildren 1 – 3 years; may happen in grown-ups;
  • incubation period 3 – 8 days;
  • numerous little vesicles in different locales in the mouth;
  • vesicles burst to shape various;
  • little shallow punctate ulcers with red radiance;
  • child is sick with fever, general disquietude, myalgia, migraine, territorial lymphadenopathy”;
  • unreasonable salivation, halitosis;
  • self constraining; recuperates in about fourteen days;
  • immunocompromised patients may build up a delayed structure.


  • acyclovir, valacyclovir or penciclovir;
  • topical (localized or recurrent lesions) or systemic.


Two types, Primary and secondary. Our main concern is the primary (varicella) or chickenpox.

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Clinical highlights

Chickenpox (Varicella):

  • 90% of the grown-up populace will contact the infection and harbor it in its idle structure;
  • generalized, typically irritated, maculopapular rash of the skin;
  • vesicles and pustules happen;
  • malaise, fever, minor oral cavity sores (vesicles/ulcers).


Usually recuperates suddenly inside around about fourteen days for Chickenpox or a month and a half for Shingles.

Herpes zoster: Acyclovir or Valacyclovir. IV in extreme cases.

RNA Virus

Picorna virus:

  • coxsackie An infections cause herpangina, hand foot and mouth malady” and intense lymphonodular pharyngitis;
  • most cases emerge summer/late-summer;
  • spread: fecal-oral course.

Clinical highlights

  • Mainly youngsters; spread helped by swarming, poor cleanliness;
  • Self– constraining malady.

Picorna virus causes Hand-foot and mouth disease:

  • coxsackie subtypes A9 and A16;
  • sore throat, dysphagia, fever. Intermittent hack, rhinorrhea, anorexia”, regurgitating”, migraine, myalgia. (influenza-like side effects);
  • skin rash on palms and soles. Oral and hand sores quite often present; different destinations variable;
  • oral injuries like herpangina yet not restricted to back mouth.


It is self-limiting but we may give supportive treatment in severe cases.


MUMPS (PARAMYXOVIRUS OR EPIDEMIC PAROTITIS ) mumps is an intense viral disease brought about by a ribonucleic corrosive (RNA ) paramyxovirus and is transmitted by direct contact with salivary beads. An underlying immunization measles-mumps-rubella (MMR) inoculation at 12 to year and a half of age and a second portion at 4 to 6 years old.

Mumps infection immunization isn’t suggested for seriously immunocompromised youngsters in light of the fact that the defensive safe reaction frequently does not create, and danger of inconveniences exists.


Mumps regularly happens in youngsters 4 and 6 years.

The brooding time frame is 2 to 3 weeks, this is trailed by:

  • salivary organ irritation and development;
  • preauricular torment;
  • fever;
  • disquietude, cerebral pain, and myalgia.

Most of cases include the parotid organs, yet 10% of the cases include the submandibular organs alone. The salivary organ development is abrupt and agonizing to palpation”, with edema in the skin overlying the included organs. Salivary organ channels are excited yet without purulent release.

One organ can wind up symptomatic 24 to 48 hours before another organ does. Swelling is normally respective and keeps going roughly 7 days. Complications of mumps incorporate gentle meningitis and encephalitis. Deafness, myocarditis, thyroiditis, pancreatitis. Guys can encounter epididymitis and orchitis, bringing about testicular decay and barrenness if the sickness happens in adolescence or later.

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  • it’s a supportive treatment;
  •  vaccination is very important for prevention.

Fungal Infections

Fungi are eukaryotes, which have thick cell dividers and ergosterol-containing cell films. Grow as maturing yeasts or as thin filamentous hyphae. Fungi may cause shallow or profound contaminations. Superficial contaminations include skin, mucosa, hair, nails. Deep parasitic diseases spread foundationally and attack tissue, pulverizing fundamental organs in immunocompromised hosts, yet recuperate in ordinary hosts.


Etiology: Candida albicans.

  • most regular oral contagious contamination in people;
  • common commensal 30 – half of individuals;
  • spores are non-pathogenic; hyphae are pathogenic.

Three general components decide if clinical proof of diseases exists:

immune status of the host;

oral mucosal condition;

the strain of Candida albicans.

Clinical Types

Pseudomembranous candidiasis (Thrush) occurs in:

  • infants who gain disease during childbirth;
  • adults utilizing long haul expansive range anti-infection agents;
  • diabetics;
  • immune brokenness: leukemia, HIV positive patients;
  • chemotherapy and radiation treated patients.

Mucosa secured by white covering (pseudomembrane) taking after curds or coagulated milk. Pseudomembrane can be scratched off, leaving the red zone. Occurs on buccal mucosa, a sense of taste, tongue. Smear with PAS recolor uncovers Candida hyphae.

Erythematous (atrophic) candidiasis

  • intense atrophic candidiasis;
  • red bare tongue;
  • follows the course of expansive range anti-infection agents.

Focal papillary decay of the tongue (Median rhomboid glossitis). Well outlined red zone in midline back tongue because of loss of filiform papillae. Maybe related with Candidal disease at different destinations in the mouth:

  • named Treatment;
  • treatment of monilia disease;
  • antibiotic drug (Mycostatin);
  • effective and safe, however bitter style might have an effect on patient compliance.

Ketoconazole (Nizoral)

Effective however will cause liver harm, so liver enzymes ought to be monitored during treatment. Use borderline effective dose, since in giant doses it also can cause adrenal suppression and eunuchoidism.

Fluconazole (Diflucan)

More practical than ketoconazole, well absorbed, needs one time daily dosing. Disadvantage: interaction with alternative medicine like hydantoin (Dilantin)”, oral hypoglycaemics and anticoagulant medication compounds.

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