Dental Needle

Structure: Comprised of a bevel (angled tip), a shaft (needle length), a hub (connects to the syringe), and a cartridge-penetrating end.

Material: Usually made of stainless steel, offering corrosion resistance.

Bevel: The angled tip aids in penetration; it is often oriented toward the bone to prevent tissue injury.

Gauge (Diameter):

25 Gauge (Red): Thicker, used for deep blocks (e.g., inferior alveolar) to minimize deflection.

27 Gauge (Yellow): Medium thickness, versatile for block or infiltration injections.

30 Gauge (Blue): Thinner, often used for infiltrations, PDL (Periodontal Ligament) injections, or in pediatric dentistry.

Length:

Long: Used for deep injections such as mandibular nerve blocks.

Short: Used for infiltration or shallow blocks.

Extra-short: Often used for specialized techniques like PDL injections.