Take a typical cast three-armed snap ring (positive snap ring) as an example. The snap ring is composed of a snap ring arm, a snap ring body, a support and a connecting body. (1) snap ring arm: the free part of the snap ring, flexible. The snap ring arm is located in the concave area, is the main part of the retaining ring retainer effect. When the denture is worn in, the elastic deformation of the arm end of the retaining ring is used to enter the undercut area through the protrusion of the abutment crown. When dislocation force function, it will prevent dislocation of the denture. When the clasp retaining arm enters and pours into the concave area through the contour of the abutment, the horizontal component force generated by the clasp on the abutment should be offset by the correspondingly designed retaining ring of the clasp or the guide plate or the small connector, In order to avoid lateral force on the abutment damage. The initial part of the snap ring arm should be more rigid, placed in the non-inverted area, play a stabilizing role to prevent lateral displacement of the denture. The shape of the snap ring arm is different according to the materials used and the manufacturing method, and there are three commonly used circular, semicircular and flat shapes. (2) snap ring, also known as the snap ring shoulder: to connect the snap ring arm, brace and a small hard part of the connector, embracing the abutment non-inverted area, abutting the buccal lingual face angle from the abutment can prevent Gingival and lateral movement of the denture, from the role of stability and support dentures, while supporting the snap ring arm, requiring the card ring body to have a higher strength, not deformed, located in the non-inverted area, and does not affect the bite. (3) small connector: The ring is embedded in the base or with the Dalian connector connected parts, mainly from the connecting role, the snap ring and other parts of the denture as a whole. The connector can not enter the abutment or soft tissue undercut area, so as not to affect the position. (4) support: often with the ring cast into a whole. The so-called three-armed ring, the support is also used as a general term for the arm.
Solar Flashlight
[7 Working Modes Flashlight]: Headlight (4-6hrs) -High, Medium and Flashing, Side White Lamp (4-7hrs) - High and Medium, Side Red Light (6-7hrs) - Flashing and Slow-flashing; Press the switch to change working mode and long press 3s to change working LED.Its beam can be focused that throws light up to an impressive 700 feet
[Car Emergency Escape Tool]: Features with window breaker break the stuck window and the seat belt cutter to cut the jammed seat belt; bring safe escape in emergencies, having a self defense Led Flashlight tactical can help you get out of most sticky situations
[HANDS-FREE]: With a powerful magnet on the side of the flashlight head, you could attach it to the car or other metallic surface to use as a Work Light, camping lamp or emergency warning light
[Reliable and Necessary]: Flashlight is water resistant & shock resistant for use under the most rugged, emergency condition.It comes with a weather resistant anodized aluminum alloy body, easy to grip, tail with a compass for outdoors; Not just for auto emergencies, also great for working, camping, or hiking as it's designed to withstand lots of abuse
[Rechargeable Emergency Power Bank]: This solar flashlight has a built-in 2000mAh 18650 battery, could be charged with included USB Cable (4-5hrs) or Solar Power (30hrs), using the USB cable to connect your phone with the flashlight (The battery needs to be greater than 20% )and charging your phone for emergency
Solar Powered Flashlight,Solar Powered Torch,Solar Rechargeable Flashlight,Solar Rechargeable Torch
Ningbo Wason Lighting Technology Co.,Ltd , https://www.wasonlights.com
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