| Customization: | Available |
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| Usage: | Dental Preventive Health Care Materials |
| Usage Times: | Disposable |
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| model | name | Nominal outer diameter of needle tube(mm) | Needle tube length(mm) | Needle wall type |
| A | Flat head straight | 0.3,0.33,0.36,0.4,0.45,0.5,0.55,0.6,0.7,0.8,0.9,1.1,1.2,1.4,1.6,1.8,2.1 | 4~100 (1mm interval) |
(RW) /(TW) |
| B | Flat head curved | |||
| C | Pointed straight | |||
| D | Round head single side hole | |||
| E | Round head double side holes | |||
| F | Right angle side opening |
Purpose: Dental irrigation needles are used to deliver irrigant solutions into the root canal system to remove debris, dissolve organic tissues, and eliminate bacteria, which contributes to the success of endodontic treatment.
Design: These needles come in various gauges (thicknesses) and designs. The gauge number ranges from 8 to 30, with higher numbers indicating a slimmer needle. The design can include a bevel, one or several lateral openings, and can be either open-ended or closed-ended.
Material and Construction: Dental irrigation needles are typically made from stainless steel or plastic. Some needles, like the IrriFlex, are slightly conical and possess two lateral vents arranged back to back just short of their closed end, facilitating efficient lateral flow and reflux of the solution while controlling the extrusion risk.
Functionality: The primary functionality of these needles is to ensure that the irrigant reaches the entire length of the root canal, especially the apical third, which is crucial for effective cleaning and disinfection. The needles are inserted into the root canal, and the irrigant is pushed through, flowing from the apical third towards the coronal third and exiting through the root canal orifice.
Techniques: Syringe irrigation is a widely used technique for delivering irrigants inside root canals. The irrigant is transferred from the syringe to the root canal through a needle, and the flow is caused by the pressure built up inside the syringe barrel due to the force applied to the plunger by the clinician.
Importance: The effectiveness of root canal irrigation depends on several factors, such as the depth of needle insertion into the canal, the final diameter of the prepared canal, canal curvature, as well as the volume and properties of the used solution. The closer the irrigating device is to the contaminated area, the more effective it is.
Limitations: One of the main limitations of this widespread irrigation method is that the irrigation solution does not reach beyond 1 mm from the tip of the needle in the apical third. Therefore, the needle must be brought as close as possible to the apex to be effective in the apical last few millimeters of the root canal.
Innovations: Newer needles, such as those with multiple lateral openings, are designed to improve the distribution of the irrigant within the root canal system, enhancing cleaning and disinfection. These innovations aim to make the irrigation process more effective and efficient.
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