AND ITS DISEASES V.Voloshyn

INFLAMMATORY DISEASES Classification according etiology, clinical and morphological displays: -- inflammatory nature diseases; - jaws bones cysts; -tumorouse disease - tumor. INFLAMMATORY DISEASES ostitis; periostitis; osteomyelitis.

by a contact way along of vascular-nervous fascicle Expansion of ostitis by a contact way along of vascular-nervous fascicle PERIOSTITIS Acute: serosal purulent Chronic (fibrotic)

Osteomielitis Infectious-allergic purulent necrotic process that develops in the bone by external or internal factors. It affects all elements of the bone and often has a tendency to generalization.

PATHOGENESIS of Osteomyelitis Theories of pathogenesis: vascular; allergic; neuro-reflex

Classification According to flowing: acute; subacute; chronic. According to localization: focal, limited (within 3-4 teeth), diffuse (half or whole jaw).

Osteomyelitis

Odontogenic Phlegmona

Abscess of submandibular region

Inflammatory character (radicularis) . CYSTS OF JAWS BONES Оdontogenic Disontogenic prymordial follicle Inflammatory character (radicularis) . Unodontogenic

CYSTS OF JAW BONES The most common pathology of the jaw bones. Cysts of the upper jaw there are in 3 times more frequently than the mandibulae . Cyst (from greek – “kystis” – “bubble”) - is a cavity that occurs in the tissues and organs of the body due to various pathological processes. There are true cyst (inner wall of them are covered with epithelium (or endothelium), and pseudocysts that do not have special one.

Radicular or preroot cyst

Radicular or preroot cyst

Kerato-cyst: fibrous cyst wall (1a) is lined by stratified squamous epithelium with acanthosis (1b), pronounced symptoms of keratinization with keratin deposition (2), clearly expressed the layer of basal epithelial cells (3)

Follicular cyst: 1 - cyst cavity , 2 - inner surface of the wall (is lined by stratified squamous epithelium), 3 - islands of odontogenic epithelium in the stratum of connective tissue cyst wall.

Radicular cyst: the inner surface of the cyst wall lined by stratified squamous unkeratinized epithelium (1), fibrous wall (2) with diffuse inflammatory histio-lymphocyte infiltration and a significant number of white blood cells (3).

Radicular cyst with suppuration

Fibrotic dysplasia Cherubizm Eosiniphilic granulomas Paget's diseases TUMULAR DISEASES Fibrotic dysplasia Cherubizm Eosiniphilic granulomas Paget's diseases

Face deformation at Fibrotic dysplasia jaw bones

Fibrotic dysplasia of jaw bone Fibrotic dysplasia; mature connective tissue, among which are primitive bony beams and small cysts.

Cherubizm

Paget's disease

Paget's disease

TUMOURS According to histogenesis: Unodontogenic (Benign and Malignant) Odontogenic:

Osteoblastoclastomae tumor is composed of two cell types: small oval monomorphic mononuclear cells (osteoblasts), and giant multinucleated cells (osteoclasts).

Malignant unodontogenic Osteosarcoma; Hondrosarcoma; Lymphadenoma.

Osteosarcoma

African lymphoma (Burkitt tumor).

African lymphoma (Burkitt tumor). The painting "starry sky" - on a dark background formed by lymphoid cells, visible light numerous macrophages.

From enamel organ (ectodermic origin); Odontogenic tumours develop from tissues of tooth elements: From enamel organ (ectodermic origin); From tooth nipple (mesenchimal origin).

Histogenesis of odontogenic tumors Tumors which develop from odontogenic mesenchyma (1) (pulp, dentine); Tumors which develop from odontogenic epithelium (3) (enamel); Odontogenic tumors of mixed histogenesis.

Tumours from odontogenic epithelium Ameloblastomas Adenomatic tumors Odontogenic carcinomas

Multiple large cysts of body and angle of the mandible Ameloblastomas Multiple large cysts of body and angle of the mandible

Clinic-anatomic forms: Ameloblastomas Clinic-anatomic forms: Cystophorous Solid. Histological forms: Follicular Plexiform (like net) Akantomatic Basal-cellular Granular-cellular

Ameloblastoma

Follicular ameloblastoma: islands of odontogenic epithelium (1) among mature connective tissue (2), the formation of cysts within the islets (3).

Ameloblastoma (follicle form)

Odontogenic carcinomas Malignant ameloblastoma Primary intrabony carcinomas

Tumours which are related histologically to the odontogenic mesenchyma: Benign: dentinoma; mixoma; cementoma (follicular, plexiform (like net), benign cementoblastoma, cementitious fibroma, giant cementoma)

Cementoma: the layers of cementoid substance with varying degrees of mineralization (1).

Odontogenic tumors of mixed genesis Benign Ameloblastic fibroma; Odontogenic fibroma; Odontoameloblastoma; Ameloblastic fibroodontoma

Ameloblastic fibroma Islets of proliferating odontogenic epithelium among the loose connective tissue that resembles dental papilla tissue.

Ameloblastic fibroodontoma Islands of odontogenic epithelium, loose connective tissue and rudimentary odontoid structures.

Malignant odontogenic tumors of mixed genesis (odontogenic sarcomas) Ameloblastic fibrosarcoma Ameloblastic odontosrcoma

Compound odontoma “Composited" odontoma. Forms of odontomas : Compound odontoma “Composited" odontoma.

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