Physical and chemical injuries of the Oral Cavity

Physical and chemical injuries of the Oral Cavity -Dr. Deepika

Physical Injuries Of The Teeth • Bruxism • Tooth ankylosis • Fractures of Teeth

Tooth Ankylosis • • • Periodontal ligament is lost Alteration in resorption of deciduous teeth Trauma Reimplanted teeth Periapical inflammation Impacted Teeth

Ellis’s Classification • • • Class 1: Enamel Class 2: Enamel and Dentin Class 3: Enamel, Dentin & Pulp Class 4: Non vital teeth Class 5: Avulsion Class 6: Fracture of root Class 7: Displacement of tooth Class 8: Fracture of crown en mass Class 9: Deciduous teeth

Physical Injuries Of Soft Tissues • • • Linea Alba Factitial Injuries/Cheek bite Trauma Denture Stomatitis Epulis Fissuratum Papillary Hyperplasia Cutright lesion Mucocele Sialolithiasis

X-Ray Radiation Radiosensitive • Lymphocytes • Germ cells Radio responsive • Salivary glands • Skin Radioresistent • Kidney • Muscle • Adrenal & Parathyroid glands

Effects of radiation • Radiation mucositis • Xerostomia • Osteoradionecrosis

Laser Radiation • • Dental soft tissues Dental hard tissues Teeth Chalky spots on teeth

• • Thermal burns Electrical burns Cervicofacial emphysema Pneumoparotid Anesthetic necrosis Human bite Oral trauma from sexual practices

Chemical Injuries of the Oral Cavity • • • Non allergic reaction to drugs used locally Aspirin Endodontic material Sodium perborate Hydrogen peroxide Phenol Silver nitrate Trichloroacetic acid Volatile oils

Non Allergic Reactions to Drugs used Systemically • • • Arsenic keratoses Bismuth Gold Dilantin sodium Lead Mercury Acrodynia /Pink’s disease/Swift’s disease Silver/Argyria Tetracycline

Anti Cancer Drugs • • Mucosal erosions Ulceration Hemorrhage Hepes simplex infection Candida infection Staphylococcal/Streptococcal Infection Hyperpigmentation

Oral Manifestations of Occupational Diseases. Cobblers, carpenters, musicians. Coal tar workers. Bronzers, Stone cutters, Electrotypers. Textile & tobacco workers. Match factory, Fertilizer workers. Tasters/Wine Localised abrasion Stomatitis Staining of teeth, Pigmentation Generalised abrasion, hemorrhage Osteomyelitis Anesthesia/Paraesthesia of tongue

. Tasters/Coffee. Refiners/Bakers/ Candy makers. Fluorine/Cryolite workers Stomatitis, Leukop lakia Caries Osteosclerosis

Regressive Alterations of Teeth • • Attrition Abrasion Erosion Abefraction