Diagnosis of Dental Abscess
Diagnosis of dental abscess is typically straightforward, especially when symptoms like pain, swelling, and pus are present. However, an accurate and early diagnosis is crucial to determine the severity of the dental abscess and to identify the best treatment strategy. Dentists use a combination of clinical examination, imaging, and patient history to make a precise assessment.
Clinical Examination
During an initial visit, the dentist will:
Examine the affected tooth and surrounding gums for swelling, redness, or pus
Check for mobility, sensitivity, and pain upon tapping or biting
Assess the patient’s medical and dental history, including any recent trauma, dental procedures, or symptoms
Pulp Vitality Testing
To determine if the dental pulp (nerve) is still alive:
A cold test, electric pulp test, or percussion test may be used
Lack of response typically indicates pulp death, confirming a likely periapical abscess
Dental X-rays
X-rays are essential in confirming the presence and location of the abscess:
A periapical abscess appears as a dark spot (radiolucency) near the root tip
A periodontal abscess may show bone loss or widening of periodontal ligament space
X-rays help evaluate the extent of infection and any bone involvement
In some cases, panoramic X-rays or 3D cone beam CT scans may be ordered to view deeper structures, especially if the abscess has spread beyond the jawbone.
Intraoral Ultrasound or Imaging
For advanced diagnosis, particularly in hospitals:
Ultrasound can detect pus accumulation in deeper tissues
MRI or CT scans are used if the infection has spread to the neck, sinuses, or brain
Laboratory Tests
If a systemic infection is suspected:
Blood tests may show elevated white blood cell counts or markers of inflammation
A sample of pus may be collected and sent for bacterial culture and sensitivity testing, especially if the infection is resistant to standard antibiotics
Differential Diagnosis of Dental Abscess
Dentists must distinguish a dental abscess from:
Sinus infections
Temporomandibular joint (TMJ) disorders
Cysts or tumours
Salivary gland infections
In summary, diagnosis of dental abscess relies on a detailed examination, imaging, and sometimes laboratory testing. A prompt and accurate diagnosis leads to effective treatment and prevents potentially serious complications.
[Next: Treatment of Dental Abscess →]
