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"TruNatomy respects the anatomy without compromising the ability to irrigate."
Dr. Jon Cowie
Rotary endodontic treatment solution
When performing root canals, without preservation much can be lost. Research1 has shown that instrumentation can compromise the strength of the tooth - but strength is restored when more dentin is saved. TruNatomy shaping files support removing dentin apicaly while being conservative coronally.2 All shaping files have the same diameter at the coronal third, preserving peri-cervical dentin, compared to traditional constant taper preparation.
The TruNatomy solution includes a dedicated Orifice Modifier, a Glide Path instrument and four shaping instruments: the Dentsply Sirona Irrigation Needle and SmartLite Pro EndoActivator® for active irrigation, the AH Plus® resin based root canal sealer and matching Conform Fit® gutta-percha points for optimized fit.
Why choose TruNatomy?
Shaping instruments designed to preserve more dentin
Unlock next-level care across your workflow
How to:
Step 1:
Review different horizontally angulated radiographs to diagnostically determine the width, length, and curvature of any given root canal.
Step 2:
Estimate the working length using well-angulated preoperative radiographs.
Step 3:
Prepare a conservative access cavity sufficient to reveal all root canal orifices.
Step 4:
Scout the coronal 2/3 of canals with an ISO 010 K-File in the presence of lubricant such as Glyde™ FILE PREP and irrigate.
Step 5:
Followed by a TruNatomy Orifice Modifier at 500 rpm and 1.50 Ncm. With irrigant in the canal advance TruNatomy Orifice Modifier in 2–3 gentle amplitudes approximately 2–5 mm in-and-out of the canal. Repeat until the coronal third is shaped. The instrument has 7 mm of cutting flutes, insertion into the canal should not exceed the length of the cutting portion. Irrigate the canal and clean cutting flutes routinely.
Step 6:
Scout the whole root canal with an ISO 010 K-File, determine working length by using an electronic apex locator (EAL) in combination with radiographs, irrigate and confirm patency.
Step 7:
With irrigant in the canal, create and confirm a reproducible glide path using a TruNatomy Glider in 2–3 gentle amplitudes approximately 2–5 mm. Irrigate and repeat until previously confirmed working length with an EAL has been reached.
Step 8:
ALWAYS begin shaping with TruNatomy PRIME (500 rpm / 1.5 Ncm) file passively in the presence of sodium hypochlorite with no more than 2-3 gentle amplitudes approximately 2-5 mm in-and-out of the canal. Irrigate and repeat as necessary until full working length is reached. Upon reaching length, remove the file to avoid over-enlarging the apical canal portion.
Step 9:
Routinely irrigate the canal and clean the instruments cutting flutes of debris upon removal.
Step 10:
If TruNatomy PRIME does not progress easily, remove, irrigate, and recapitulate with an ISO 010 K-File to confirm canal patency and move to the TruNatomy SMALL.
Step 11:
Inspect cutting flutes routinely upon removal for presence of unwinding and straightening. If deformation is noted, discard and use a new TruNatomy instrument.
Step 12:
Advance TruNatomy SMALL passively in the presence of sodium hypochlorite with no more than 2-3 gentle amplitudes approximately 2-5 mm in-and-out and remove instrument. Irrigate and repeat as necessary to working length in a gentle/passive in-and-out motion and then use TruNatomy PRIME to working length to optimize the shape.
Step 13:
If TruNatomy PRIME is loose at length with no dentinal debris in the apical flutes, continue shaping with TruNatomy MEDIUM and subsequently with LARGE if needed. Care should be taken to guide each instrument gently to full working length to ensure completeness of shape. Use TruNatomy LARGE in larger and straighter canals only, such as maxillary central incisors, some palatal or distal canals of molars.
Step 14:
Following proper cleaning and shaping, confirm the final working length measurement using the last TruNatomy instrument by hand. Verifying the shape at working length and passive fit ensures that TruNatomy Conform Fit gutta-percha points matches the correct apical canal diameter. This is achieved by passively placing the last TruNatomy instrumen in the canal. If the instrument reaches the working length passively, choose and try-in the matching TruNatomy Conform Fit guttapercha points. If the fit is not passive, instrument (as described above) with the last TruNatomy shaping instrument after reconfirming working length, irrigating and confirming patency.
Step 15:
Once appropriateness of the shape is confirmed, proceed with 3-D disinfection protocols.
Step 16:
Use dedicated TruNatomy paper points to dry the root canals and dedicated TruNatomy Conform Fit gutta-percha points to obturate.
Related products
SmartLite Pro EndoActivator
Irrigation needle
AH Plus
Conform Fit Gutta-Percha
Frequently asked questions
TruNatomy is a rotary endodontic treatment solution from Dentsply Sirona which includes a dedicated Orifice Modifier, a Glide Path instrument, and four shaping instruments (Prime, Small, Medium, Large), as well as matching absorbent paper points and Conform Fit gutta-percha points.
The engine-driven instruments are intended for root canal preparation (glide path, shaping and debridement of the root canal). The matching obturation for supporting a predictably fit for the right tug back.
TruNatomy has several advantages for endodontic treatment, such as preserving as much dentin as possible, only removing tissue (hard and soft) where needed while ensuring appropriate irrigation. The instrument adjusts to the canal thanks to the high flexibility and slimmer design, providing a smooth feeling during preparation as well as a sense of control.
The files are also more reliable thanks to a reduced risk of file breakage as the NiTi wire with dedicated heat treatment offers pre-curving capability and superior cyclic fatigue resistance.5
Research has shown that instrumentation can compromise the strength of the tooth — but strength is restored when more dentin is saved.1 TruNatomy offers a specific combination of features that allows to retain more tooth structure during root canal treatment. Designed to preserve more dentin, the shaping files are made of NiTi (nickle titanium) wire with a dedicated heat treatment that offers pre-curving capability and superior cyclic fatigue resistance,5 a regressive variable taper and an active length of 16 mm. Its proprietary parallelogram shaped off-centered cross-section removes up to 18% more debris.4
Additionally, TruNatomy Orifice Modifier shapes the orifice to create the entry point without straight line access, preserving pericervical dentin.
The files are manufactured with a process that results in a file that has a colored appearance. Due to this proprietary processing, the files may appear slightly curved. This is not a manufacturing defect. While the file can be easily straightened using only your fingers, it is not necessary to straighten the file prior to use. Once inside the canal, the file will follow the root canal anatomy
Yes, torque control devices ensure optimal usage. Use with endodontic motor such as X-Smart Pro+ in a constant rotation at a speed of 500 rpm with a torque of 1.5 Ncm and with gentle stroking motion.
Downloads
TruNatomy® | Solution Guide | EN
TruNatomy Sequence and Step-by-Step procedure
436 KB
TruNatomy | Scientific Manual | EN
Scientific and research information
1 MB
TruNatomy | Case Collection | EN
Clinical Cases and Testimonials
9 MB
For instructions for use, safety data sheets, eMDR documents and more, visit our Download Center
Featured case study
A complex case with long roots and a calcified system with a 14 month follow-up
"A patient and process centered success." - Dr. Cowie
Before: Periapical radiolucency associated primarily with the distal root and loss of lamina dura on the mesial root.
After: TruNatomy was chosen in this case to allow a caries leveraged approach and a focus on pericervical dentin preservation especially on the mesial aspect where the tooth had a more minimal restoration.
What dental professionals like about TruNatomy
"TruNatomy is a conservative and flexible root canal shaping system: a larger tapered instrument would have weakened the tooth."
Dr. Mauro Amato
"TruNatomy system facilitates the treatment of calcified and curved canals by focusing on dentin preservation."
Dr. Juan Pablo Miraglia
1. Ferrari M, Vichi A, Fadda GM, Cagidiaco MC, Tay FR, Breschi L, Polimeni A, Goracci C. A randomized controlled trial of endodontically treated and restored premolars. J Dent Res. 2012 Jul;91(7 Suppl):72S-78S; Marvaniya J, Agarwal K, Mehta DN, Parmar N, Shyamal R, Patel J. Minimal Invasive Endodontics: A Comprehensive Narrative Review. Cureus. 2022 Jun 16;14(6):e25984.
2. 50% less dentin removal vs ProTaper Next. Based on internal laboratory tests using 30 plastic blocks for each instrument. For more information contact Consumables-Data-Requests@dentsplysirona.com
3. TruNatomy Scientific Manual: Angulated access cavities study.
4. Compared to ProTaper Next. Debris volume is calculated based on 3D drawings comparing TruNatomy MEDIUM and ProTaper Next.
5. Compared to ProTaper Next: TruNatomy Prime 3.5 times more resistant than PTN X2. Based on fatigue resistance bench tests using 50 instruments per size from 3 different lots.
6. Elnaghy AM, Elsaka SE. Evaluation of root canal transportation, centering ratio, and remaining dentin thickness associated with ProTaper Next instruments with and without glide path. J Endod. 2014 Dec;40(12):2053-6
7. Selvanathan MJ Vinola, Sekar Mahalaxmi, Characterisation and evaluation of physical properties of AH-Plus sealer with and without the incorporation of petasin, pachymic acid, curcumin and shilajit-an invitro study. BMC Oral Health, 24, Article number: 352 (2024)
