Wood’s lamp examination.

A Wood’s lamp examination, also known as ultraviolet (UV) light examination, is a diagnostic tool used to detect and diagnose various skin and oral conditions. The lamp emits a specific wavelength of UV light (360-400 nm) that causes certain substances to fluoresce (glow).

In dentistry, Wood’s lamp examination is used to:

• Diagnose oral lesions and ulcers
• Detect cariogenic bacteria (e.g., Streptococcus mutans)
• Identify dental plaque and calculus
• Diagnose oral fungal infections (e.g., candidiasis)
• Detect porphyrins (e.g., in porphyria cutanea tarda)

The procedure is simple and non-invasive:

• The Wood’s lamp is held 4-6 inches away from the area to be examined.
• The UV light is shone onto the area for a few seconds.
• The resulting fluorescence helps identify specific substances or conditions.

Wood’s lamp examination is a valuable tool for dentists and oral surgeons to:

• Aid in diagnosis and treatment planning
• Monitor oral health and detect potential problems early
• Provide targeted treatment and preventive care

Note: Wood’s lamp examination is usually performed in a dental office or clinic. Your dentist will determine if this examination is necessary for your specific needs.