26/12/2025
๐๐ช๐ฒ ๐ฎ๐ฟ๐ฒ ๐ฝ๐น๐ฒ๐ฎ๐๐ฒ๐ฑ ๐๐ผ ๐๐ต๐ฎ๐ฟ๐ฒ ๐ฎ ๐๐๐ฐ๐ฐ๐ฒ๐๐๐ณ๐๐น ๐ฐ๐น๐ถ๐ป๐ถ๐ฐ๐ฎ๐น ๐ฐ๐ฎ๐๐ฒ ๐ณ๐ฟ๐ผ๐บ ๐ ๐ถ๐ฑ๐ฑ๐น๐ฒ-๐๐ฎ๐๐ ๐๐ข๐ ๐๐ถ๐๐ต ๐ฉ๐ถ๐ฑ๐ฒ๐๐ฎ ๐ง๐ ๐ฅ๐ฎ๐ถ๐ป๐ฏ๐ผ๐ ๐ณ๐ถ๐น๐ฒ๐
"Based on the diagnostic images, we can see that we are dealing with curved mesial canals. Does this mean the case is difficult? Certainly not, because if we look closely at the diagnostic image, we can see that the canal is clearly not too narrow, whichโdespite the curvatureโmakes it an easy case.
In such straightforward cases, I never use manual files. Why?
Because rotary files are more capable of preserving the canalโs shape and maintaining its centrality. They follow the canalโs curvature more easily than manual filing, avoiding problems such as ledging or other issues that can arise from hand files. Of course, you must have experience using rotary systems and trust the system you use, while also knowing when to switch back to manual files.
In such cases, the fundamental step we need to know is that we first perform coronal enlargement with a red TC_RINBOW 6% file. I prefer the 6% over the SX because it offers greater flexibility.
We start with the lingual canal since itโs highly likely that the canals merge, and the lingual canal usually has an easier curvature.
Therefore, we then use TC_PATH FILE 3% along the entire length of the lingual canal only.
For the mesiobuccal canal, we only prepare the coronal two-thirds or avoid going deepโjust perform coronal enlargement.
Next, yellow TC_RINBOW 4% along the entire length of the lingual canal.
After that, TC_PATH FILE is used in the mesiobuccal canal, either for two-thirds or the full length depending on how easily the file enters.
Then, red TC_RINBOW 4% along the entire length of the lingual canal.
For the mesiobuccal canal, we now prepare it along the full length with the three files or only at the merging area.
For the distobuccal canal, we go directly with red TC_RINBOW 6% to the full length and reach the apex. What does this mean?
This indicates a lateral apical foramen, so here I use K15 to bypass it, and there is no need for K10. The white file will be easier to use."
