This document discusses odontogenic infections, which are infections that originate from teeth. It describes the various types of odontogenic infections like reversible pulpitis, irreversible pulpitis, and facial space infections. It also discusses the microorganisms commonly involved like Peptostreptococcus, Bacteroids, and Fusobacterium. The management of odontogenic infections includes empirical antibiotic treatment, incision and drainage of abscesses, and removal of the infecting source. Antibiotic resistance is a concern due to genetic exchange between microorganisms.

1. BY: DR. SHIVANI SALUJA
MDS ORAL AND MAXILLOFACIAL SURGEON
ODONTOGENIC
INFECTIONS

2. Introduction
 Galen 2nd century
 Fight against microrganisms
 Penicillin
 Streptococcus, Eubacterium, Bacteroids and
Fusobacterium

3. Various presenation of odontogenic infections
 Reversible pulpitis
 Irreversible pulpitis- acute / chronic
 Pheonix abscess
 Facial space infection

4. Various portals of entry of bacteria into pulp

9. 11
12
13
14
15
16
17
18 23 24 27
28
34 35
36
37
38
43 44
46
47
48
0
2
4
6
8
10
12
14
16
10 15 20 25 30 35 40 45
FREQUENCY
TOOTH INVOLVED
GRAPH 2: TOOTH INVOLVED

10. 0 5 10 15 20 25 30
SUBMANDIBULAR
SUBLINGUAL
SUBMASSETRIC
SUBMENTAL
BUCCAL
CANINE
PTERYGOMANDIBULAR
PERITONSILLAR
TEMPORAL
INFRA TEMPORAL
LATERAL PHARYNGEAL
PAROTID ABSCESS
LOCALISED ABSCESS
VESTIBULAR
SUBCUTANEOUS ABSCESS
OSTEOMYELITIS
INFECTED SOCKET
FREQUENCY
SPACE
GRAPH 3: SPACE INVOLVED

12. 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
FREQUENCY

13. Commonly isolated anaerobes
 Peptostreptococcus
 Bacteroids
 Provetella
 Fusobacterium
 Porphyromonas

14. Management
 Empirical antibiotic treatment
 Incision and drainage
 Removal of etiology

15. Note on the changing microflora and
antibiotic resistance
 Chromosomal mutation
 Inductive expression of a latent chromosomal gene
 Exchange of genetic material through
transformation, tranduction or conjugation.
 Transpons (jumping genes)

16. Vestibular abscess

18. Periodontal abscess

19. Pterygomandibular space

20. Pterygomandibular space

21. Extra oral sinus

22. Submandibular with submassetric

25. Ludwigs angina

26. Ludwigs angina

29. Infraorbital space infection

30. Conclusion
 . The gold standard to date for space infection
treatment is incision and drainage and penicillins
with β- lactamase inhibitors.
 Educative programmes health care providers
regarding antibiotic use.
 Adapt a healthy life style with appropriate balanced
diet routine dental check-ups to avoid severe oro-
facial infections due to dental and periodontal
pathology.