武汉大学：《牙体牙髓病学》课程PPT教学课件（英文版）牙本质过敏 Dentin Hypersensitivity

DEntin ypersensitivity Zhang Qi Wuhan University School of Stomatology

Dentin Hypersensitivity Zhang Qi Wuhan University School of Stomatology

Introduction

Introduction

Definition: Dentin hypersensitivity is a common condition of transient tooth pain caused by a variety of exogenous stimuli

Definition: Dentin hypersensitivity is a common condition of transient tooth pain caused by a variety of exogenous stimuli

Characteristic Short, sharp pain. Most in cervical then occlusal

Characteristic Short , sharp pain. Most in cervical, then occlusal

Stimuli The exogenous stimuli include 4! Thermal(cold 4 Tactile(touch) Osmotic changes (sweets, drying the surface)

Stimuli The exogenous stimuli include: Thermal (cold) Tactile (touch) Osmotic changes (sweets, drying the surface)

Etiology The primary clinical cause is exposed dentinal tubules

Etiology The primary clinical cause is exposed dentinal tubules

Two phases of development of dentin hypersensitity First, dentin has to be exposed lesion localization I The dentinal tubules must be opened -lesion initiation

Two phases of development of dentin hypersensitity First, dentin has to be exposed. —lesion localization The dentinal tubules must be opened —lesion initiation

The most common clinical cause for exposed dentinal tubules is gingival recession

The most common clinical cause for exposed dentinal tubules is gingival recession

Common reasons for Gingival recession 1. Inadequate attached gingiva 2. Prominent roots 3. Tooth brush abrasion 4. Pocket reduction periodontal surgery 5. Oral habits resulting in gingival laceration 6. Excessive tooth cleaning 7. Excessive flossing 8. others

Common Reasons for Gingival Recession 1. Inadequate attached gingiva 2. Prominent roots 3. Tooth brush abrasion 4. Pocket reduction periodontal surgery 5. Oral habits resulting in gingival laceration 6. Excessive tooth cleaning 7. Excessive flossing 8. others

Reasons for continued Dentinal Tubular exposure 1. Poor plaque control, acidic bacterial byproducts 2. Excess oral acids, sodas, fruit juice 3. Cervical decay 4. Toothbrush abrasion 5. Tartar control toothpaste

Reasons for Continued Dentinal Tubular Exposure 1. Poor plaque control, acidic bacterial byproducts 2. Excess oral acids, sodas, fruit juice 3. Cervical decay 4. Toothbrush abrasion 5. Tartar control toothpaste