牙齿疾病（Dental
Conditions）： Cavities (蛀牙):
例句: "Poor oral hygiene can lead to cavities, which require dental fillings."
Gingivitis (牙龈炎):
例句: "Gingivitis is characterized by inflamed and bleeding gums, often caused by plaque buildup."
Periodontitis (牙周炎):
例句: "If untreated, gingivitis may progress to periodontitis, affecting the supporting structures of the teeth."
Tooth Decay (龋齿):
例句: "Regular brushing and flossing help prevent tooth decay and maintain oral health."
Halitosis (口臭):
例句: "Persistent bad breath, known as halitosis, may be a sign of underlying dental issues or poor oral hygiene."
牙齿症状（Dental Symptoms）：
Toothache (牙痛):
例句: "A severe toothache may indicate a cavity, infection, or other dental problems."
Sensitivity (牙齿敏感):
例句: "Tooth sensitivity to hot or cold temperatures can be caused by enamel erosion or gum recession."
Bleeding Gums (牙龈出血):
例句: "Bleeding gums during brushing or flossing may be a sign of gingivitis or periodontal disease."
Swollen Gums (牙龈肿胀):
例句: "Swollen gums can be a symptom of various dental issues and should be examined by a dentist."
Tooth Erosion (牙齿侵蚀):
例句: "Acidic foods and beverages can contribute to tooth erosion, leading to sensitivity and weakened enamel."
牙齿问题治疗（Treatment of Dental Issues）：
Dental Fillings (牙齿充填):
例句: "Dental fillings are commonly used to repair cavities and restore damaged teeth."
Root Canal (根管治疗):
例句: "A root canal is performed to treat infected or inflamed pulp inside a tooth."
Dental Crown (牙冠):
例句: "A dental crown is placed over a damaged tooth to restore its shape, size, and strength."
Tooth Extraction (拔牙):
例句: "In cases of severe decay or trauma, a tooth extraction may be necessary."
Orthodontic Treatment (正畸治疗):
例句: "Orthodontic treatment, such as braces, is used to correct misaligned teeth and improve bite."
