牙髓牙周联合病变演讲PPT

Of commuincation between the dental pulp 50 % and the periodontium
Apical foramen
Lateral root canal and Accessory canal Dentinal tubules Anatomical abnormalities
根尖脓肿沿牙周的可能排脓途径
Schematic illustration demonstrating possible pathways for drainage of a periapical abscess into the gingival sulcus/pocket. (a) periodontal ligament fistulation. (b) extraosseous fistulation
Lateral root canal and Accessory canal
% Dentinal tubules
50
Anatomical abnormalities
bacteria viruses fungi
spirochetes
Live pathogens
Root canal Dentin and filling CalculusInflamed Cholesterol cementum mater like epithelium crystals chips ials deposits
Confusing
with
periodontal ligament fistulation.
characteristics：
devital tooth only a narrow opening of the fistula into the gingival sulcus/pocket No obvious absorption Adjacent teeth X-ray
Nonliving pathogens
Russell bodies Food debris Charcot-Leyden crystals Rushton hyaline bodies
1、influence of endodontic lesions on the periodontium Retrograde periodontitis Root perforations
Root perforarion
During endodontic treatment, and in conjunction with preparation of root canals for the insertion of posts, instrumentation can accidentally cause perforation of the root and wounding of the periodontal ligament
Of commuincation between the dental pulp 50 % and the periodontium
pulp-------dental papilla PDL--------dental follicle
Hertwig’s epithelial root sheath
2.influence of periodontal disease on the pulp
Retrospective pulpitis
The long-term existence of periodontal disease Influence of periodontal treatment measures on the pulp
Try to find out the primary lesions
Actively deal with perioBiblioteka Baiduontal lesions and pulpitis
Eliminate the source of infection
To some degrees ,The pupities and the periodontal disease are interlinked,so when we treat anyone of them ,we need to consider the influence both in the pulp and the periodontium.This is the crux of the diagnosis as well as the therpy of the disease.