Stand 1S04

IAN Block made Easy


Injecting anesthetic in the standard inferior alveolar nerve block is a classical practice for dentists. But in numerous cases, the lack of clear anatomical landmarks makes the injection uneasy.

Dentalgic has developped and patented EZ-Block®, an angulator which relies on extra-oral landmarks, easy to identify. It is a Class I medical device that allows the needle to be positioned in the theoretically ideal place to realize an IANB anesthesia with a success of about 100 %.

Benefits for you:

  • Reproductibility of injections: the needle is ideally positionned, whatever the morphology of your patient;
  • Control of height, deepth and axis of the injection to enhance efficiency and security;
  • Optimal protection: your fingers remain at distance from the injection point, which reduces the risk of accidental stings and blood exposure.

Benefits for your patients:

  • Reduction of the injected dose: your patient receives a reduced quantity of anesthesic product;
  • Reduction of injection stress: the length of the needle is hidden from your patient.

Avantages: security, patient’s comfort, time savings, simplicity

EZ-Block® is easy to use





Preparation of EZ-Block


EZ-Block positioning


User's manual

Quick Start Guide

About EZ-Block

DENTALGIC is a company created by Dr. Nicolas Caillieux, dental surgeon, who invented and patented the concept of EZ-Block®. Through his experience in Hospitals and Universities, he gathered anatomical inputs to create these new products.

EZ-Block® has been developed and patented between 2005 and 2014.

  • 2015 : Caillieux N, Rousset P, Vidaud C, Robert C, Arreto C-D, Mahler P, Tager F, Tilotta F. Utilisation d'un angulateur pour analgésie au foramen mandibulaire. Etude préliminaire comparative avec une technique "à main levée". Rev Odont Stomat. 2016; 45 : 106-117.
  • 2012 : Laujac MH, Caillieux N. Les techniques analgésiques et leurs indications dans la région molaire mandibulaire. Information Dentaire. 2012 ; 41 : 28-2.
  • 2008 : Robert C, Caillieux N, Wilson CS, Gaudy JF, Arreto CD. World orofacial pain research production : a bibliometric study (2004-2005). J Orofac Pain. 2008 ; 22(3) : 181-9.
Accademic background
  • 2006-2020: Manager in the Société d'Anatomie et de Pathologie Orale S.A.P.O. (Anatomy andOral Pathology Society).
  • 2004-2009: Accademic assistante in the Anatomy and Physiology Deparments (Paris V).
Clinical duties
  • 2014-2020: Dental surgeon in the Stomatology Department of private hospital Ursulines in Troyes (France).
  • 2006-2009: Dental surgeon in the Stomatology Department of the Troyes hospital (France).
  • 2004-2009: Assistant in the Oral Surgery Department of the Albert Chenevier hospital (Créteil, France).

Users feedback

I tested the product for chirurgy on patients with a wide variety of ages and for pulpits, and clearly, every time the anesthesia works at an incredible speed.
Dr Adrien B.
Today, (after reading your recommendations), the IANB is effective within less than 1 minute, and even 30 seconds are enough.
No more gingival wounds on the papillae (intraseptal), no more pain for the patient.
True working comfort for the practitioner and for the patient.
Kudos to you for this revolutionary tool.

Please note that all the practitioners at the dental center have asked me for a demo. Those who do not practice IANB are amazed by the efficiency and those who already do are surprised at the speed with which the anesthesia takes and especially the success rate.
I myself am in a hurry to be able to order a box because I will not be able to do without it anymore.
I wish you great success.
I believe in it and talk about it as if I had invented it myself.
Dr. Olivier S.
Hello Nicolas,
I am very satisfied with the system for making the tronculars. I made about 10 injections and all of them worked within 3 minutes and the last within 5 minutes.
Dr. Patrick S.
I did not see any difference in terms of handling compared to the prototype: systematically I palpate the anatomical landmarks and I show the kinetics empty to familiarize my patient.
Then I perform spix anesthesia (1 cartridge of 1/200 000) which I systematically complete with a periapical disto-vestibular of the 7 (read in the jpio "endodontics").
It is very rare for me to perform a second injection. If ever a small sensitivity persists, I treat it with an intra ligament point.
I noticed that the friction of the plastic syringe in the angulator was softer than that of the metal with the prototype. By putting the head in extension with a rotation of the side to be anesthetized, I only have to accompany the syringe body until the stop. It seems more comfortable to the patient.
I do not perform suction before injection but when disassembling the piston, I actually see a nice suction effect which suggests that the absence of harpoon does not prevent suction for practitioners who want it.
In conclusion, I find the finished product in line with the prototype with as much success on arrival. The risks associated with this type of anesthesia are not increased in my opinion (paraesthesia) with this technique, but the results are much more predictable once the gesture is acquired.
The learning curve is generally rapid: ten anesthesias will be enough to use the angulator without apprehension.
I wish you all the success you deserve with this project which is reaching its goal and I thank you for allowing me to participate in the adventure.
Dr. David D.
The tests are going well, I have a little more difficulty using it on the right side.
I have 2 really impressive cases of patients resistant to anesthesia even osteocentree that I managed to anesthetize in less a minute !!
They couldn't believe it (and neither did I)
Dr. Adrien B.
I took a little time to start because the size of the system scared me a little. To tell you everything I have already done two and I had very good results and as soon as it occurs I will continue to use it.
Dr. Jérôme C.
Not being a fan of IANB because I almost always missed them, I had stopped practicing them.
I became a fan of the Ez-Block,
  • Very easy to use,
  • Reproducibility, not a single failure
  • I work more in sector
  • No more stress on the bottom 7 pulpites .....
  • Another advantage is that the patient does not see the needle, which can easily be hidden in the cylinder.
Last week, pulpitis in a 93 year old lady, two cartridges as you advised me, in 9 min deep anesthesia and clinical silence.
Nothing else to add, I am a big fan.
Dr. Aziz I.
During my studies at the university, 3 years ago, I only practiced few times the IANB anaestesia, and without much success. Today, when I have to practice a deep treatment, or to work on a mandibular molar, I automatically do a loco-regional anaestesia, but moreover, I use the device imagined by Dentalgic. This tool requires some training at start, but it really helped me to demystify this anaesthesia. I continue to use it (with 35 mm needles) but I don't practice aspiration test.
The Quicksleeper tool was also tempting but many times but at such price... ouch ouch... For this reason, I will never thank enough Nicolas Caillieux.
Dr. David D.
I am happy to hear about you again, Docteur Caillieux, to tell you that I am very satisfied with your product, and that I use it nearly every day.
I will sadly not be n Köln [IDS 2019], but we will stay in contact in the future.
Best regards.
Dr. Enrico T.
Dear friend,
I am satisfiee with the use of my device to guide syringes.
I don't use it every day, but pretty often.
Possibly you can think about an extension for biggger people!!!
Best regards
Dr Catherine A.
I use "EZ-Block" for every spix, I am satisfied with the product, my success rate is higher.
I first inject some anesthedic product with an syringe in para-apical mode, and then I do a spix with the "EZ-Block" system.
Dr Olivier G.
Easy, comfortable, I use your product for all injections in the standard inferior alveolar nerve block.
Dr Jérôme B.
I reply to your letter.
I am very satisfied with your product. I don't use it very frequently because I don't do a lot of injections in the standard inferior alveolar nerve block, but I must admit the success rate is 100%.
I would need a short YouTube video to rememeber how to use it. Possibly I did not see it...
Dr Benjamin C.
Good evening Dr CAILLIEUX,
I answer to your letter regarding my purchase of your guiding device.
I smiled when I received your letter, because I thought about calling you just after the purchase.
Indeed, I have been overwhelmed by the efficiency of this device, which enables me to deal with pulpites with serenity. The device is well engineered, easy to use, and very efficient.
I am really happy with it, and I use it systematically for all avulsions and canal obturation on the mandibular molars and premolars, as well as for multiple care.
This device deserves to be popular!
Thank you very much!
Dr Jean-Philippe B.
I thank you for your letter, and I will share with you my experience about your guiding device.
To make it short, this fantastic tool changed my professional life!
I must admit I was really not very good at Spix. Over 75% of miss rate after first injection! I tried again and again to take anatomy courses, to read again and again my practical bood about dental anesthesia, nothing could help! Whatever the method I used to get references, I constantly cought the mouth nerve, or the toungue nerve, or even (yes, believe me!) the face nerve, but never this f*** mandibular neve. Extracting a mandibular tooth was always a nightmare, with some attempts to use infitrations through ligaments, but it constantly ended up in dry alveolite.
And then I discovered your tool, whilst moving around the booths during the ADF trade show (in 2011 if I remember well).
When I was expalined how to use it, it was like seing the light at the end of the tunnel.
Back at my office, I did not wait, and I tested it on the fist mandibular spine of the day, and in less than one minute, half of the lower jaw of my patient was alseep. You can not imagine the relief of all fears related to mandible acts, the sense of liberation that gave me the use of super-gadget. It's a pity you have not won the Innovation Award in the ADF because this tool is truly life-changing, and greatly facilitates the practice. No need to ask ideological and metaphysical questions, take a Xanax before (!), to use a voodoo sorcerer (!!!), to twist the wrist to find the thing ligament, the concavity branch etc ... I can practice almost blindly thanks to this tool.
The few times I have failed are related to the fact that I have not positioned the ball at the earlobe. I advised my best friend and colleague who also encountered some difficulties in placing this anesthesia.
Sorry for all that spiel, but I wanted to share my personal story with infiltration in the mandibular nerve, so that you understand all the good things of the guidance system, which I systematically use when I have such anesthesia to practice.
And needless to say, I would recommend it to 100% of practitioners who have difficulties with mandible anesthesia, and who would ask questions about its reliability. It is extremely reliable.
From a practical point of view, there is an additional security, because the size of the guiding sheath requires the patient to keep the mouth open, and tongue naturally remains aloof.
Thank you so much for having developed this tool, I would say it gives to mandibular anesthesia the same advantages as WAMkey for loosening crowns.
Dr Anh A.

Contact us

A question? A suggestion? We will answer you shortly!