08/08/2025
🔴بوست متعلق باطباء الاسنان :
-مرحبا بالزملاء الطيبين
▪️زي ما عارفين انو ٥٠ % أو أكثر من الحالات الجايه للعيادة هي حالات علاجها جذور...وحاليا طبعا ٩٠% من الأطباء بيستخدم الروتاري فايلس لسهولة الاستخدام وكسب الزمن وسهولة الاوبتوريشن بس مشكلتها الرئيسيه انو الزول بفقد ال tactile sensation عشان كدا الerrors الممكن تنتج عنها كتيرة واكتر شي شائع منها انفصال جزء من الفايل لكن خلينا نصنف الerrors لي ٣ أصناف...
-أخطاء نتيجة الى تقنية الطبيب.
-أخطاء متعلقه بالفايلات مثل الاختيار الخاطئ للفايلات أو عدم فحص الفايل قبل استخدامه.
- أخطاء متعلقه بالسن نفسها وخصوصا معظمنا بنستخدم الx ray العاديه ال هي two dimension.
◽️ بالاهتمام والتدقيق ممكن نتجنب أو نقلل. من الأخطاء المتعلقه بالفايل والسن .
◽️عشان كدا هنتكلم في البوست عن قضية الطبيب وهنديكم شوية tips هتساعد كتير أن شاء الله.
▫️▪️▫️▪️▫️▪️▫️▪️▫️▪️▫️▪️▫️▪️
How to Properly Use Rotary Files Inside the Root Canal — Without Breaking Them
Rotary NiTi files are excellent tools for efficient canal shaping, but they are also prone to separation if not used with proper technique and care. Below are essential clinical principles that every clinician must follow to ensure safe, predictable use of rotary files inside the root canal system:
✅ 1. Use a Gentle In-and-Out (“Pecking”) Motion — Not Continuous Forcing
Always advance the rotary file in small, controlled pecking strokes, letting the file progressively shape the canal without pushing. Avoid any apical pressure. The resistance felt should be no more than the force required to slightly bend the file against a tabletop.
> Excessive force increases torsional stress and the risk of file separation.
✅ 2. Apply a “Brushing” Technique — Away From the Furcation
When shaping curved or oval canals, use a brushing motion where the file is gently pressed against the outer wall, away from the furcation side (to prevent strip perforation or thinning). This technique helps in coronal flaring and relieves stress on the file.
> This brushing action also helps the file to bypass interferences and passively follow the canal curvature.
✅ 3. Do Not Rush to Full Working Length in a Single Pass
Avoid trying to reach the full working length (WL) on the first attempt with any rotary file. Instead, adopt a progressive pe*******on strategy:
Advance the file incrementally—each time going 2–3 mm deeper than the previous pass.
Allow adequate irrigation and recapitulation between passes to remove debris and reduce friction.
> Trying to force the file to the apex too early leads to file binding and fracture.
✅ 4. Limit Each Engagement to 3–5 Pecking Motions
Each file insertion should involve 3 to 5 pecking strokes only, with each lasting no more than 10–15 seconds. If the file does not advance further, withdraw it, irrigate, and reassess patency with a small hand file (e.g., size 10 K-file).
> Staying too long inside the canal increases both torsional and cyclic fatigue.
✅ 5. Activate the Rotary File Before Entering the Canal
Always start the motor before inserting the file into the canal. Inserting a non-rotating file and turning it on inside the canal can cause sudden engagement, leading to immediate fracture due to uncontrolled torque or canal curvature.
> The file should always be rotating at the correct speed and torque settings prior to contact with dentin.
⚠️ Bonus: Use Glide Path and Recapitulation
Always establish a smooth glide path with hand files (at least size 15–20 K-file) before introducing any rotary file.
Use recapitulation with a small file between rotary steps to maintain patency and avoid blockage.
🧠 Clinical Reminder:
Rotary files do not cut like drills — they need space, lubrication, and patience. Overusing a single file, applying pressure, or neglecting irrigation are the leading causes of rotary separation in clinical practice.
Mastering these principles will drastically reduce the risk of procedural errors and file separation.
المصدر
