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2025
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How to solve the problems encountered when measuring the length of the root canal?
Aug 16,2025
Analysis of Problems with the Use of Root Canal Length Measuring Instruments
1: The root canal needle has not reached the apex, but the display shows it has?
Reasons:
1、 Too much liquid in the root canal.
2、 Saliva contamination on the crown surface.
3、 There is residual pulp or debris in the root canal.
4、 Abnormal conditions such as perforation of the pulp floor or root fracture exist.
5、 The root canal needle has contacted the gingiva or surrounding tissue.
6、 A root canal needle with a metal handle was used.
💡Solution:
- Appropriately remove liquid from the root canal, avoiding excessive drying.
- Clean and dry the saliva on the crown surface.
- Remove residual pulp and debris (measurement is still possible when the apical foramen is narrow).
- For abnormal conditions that cannot be accurately measured, consider other measurement methods.
- Ensure the root canal needle avoids contact with the gingiva.
- Use a resin handle root canal needle instead. 
Root Canal Length Meter,Root canal measurement,Foshan Liangya Dental Equipment Co., Ltd.
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