What is Root Canal Treatment (Endodontics)?
Contrary to common belief, root canal treatment is not for “killing” a tooth, but for “saving” it. When decay passes through the enamel and dentin and reaches the pulp (the soft tissue containing nerves and blood vessels), the tooth develops severe inflammation and infection. At this stage, root canal treatment is the only way to preserve the tooth root in the mouth and prevent its extraction. Root canal treatment or endodontic therapy is one of the specialized treatments in dentistry that is performed to save a tooth whose pulp (the soft tissue inside the tooth) has become inflamed or infected. This treatment helps preserve the natural tooth and prevents its extraction.
Precise Steps of Root Canal Treatment
In order for the root canal treatment (Endodontics) section on Dr. Hessam Nazari’s website to be completely professional and trustworthy, the steps should be explained in a way that carries scientific value while also reducing the patient’s fear of this procedure (which is usually associated with anxiety).
Here are the precise and specialized steps of root canal treatment presented step by step:
1.Specialist Examination and Radiographic Imaging (Radiographic Exam)
The first step is the precise evaluation of the roots. Using digital radiographs (RVG), the dentist examines the number of canals, the degree of root curvature, and the extent of infection in the apex area (the end of the root) in order to design the most accurate treatment plan.
2.Complete Anesthesia and Pain Elimination (Deep Anesthesia)
Contrary to common belief, root canal treatment should not be painful. In our clinic, using modern local anesthesia techniques, the tooth and surrounding tissues are completely numbed so that the patient remains fully comfortable during the treatment.
3.Isolation with Rubber Dam (Isolation)
This stage reflects the quality of the procedure. The tooth is isolated from the oral environment using a rubber sheet (Rubber Dam).
Goal: Prevent saliva (which contains bacteria) from entering the canals and protect the patient’s throat from irrigating solutions.
4.Creating the Access Path (Access Cavity)
The dentist removes superficial decay and creates an access path toward the center of the tooth (pulp) in order to reach the openings of the root canals.
5.Cleaning and Shaping the Canals (Cleaning & Shaping)
At this stage, infected tissues, damaged blood vessels, and inflamed nerves are removed from inside the canals.
Rotary Technology: We use rotary files, which are very flexible and precise, to smooth and shape the canal walls so they are ready for filling.
6.Digital Working Length Determination (Working Length)
Using an Apex Locator device, the exact length of each canal up to the end of the root is measured with tenth‑of‑a‑millimeter precision to ensure that no infected area remains.
7.Chemical Irrigation and Disinfection (Disinfection)
Physical cleaning alone is not sufficient. The canals are irrigated with special solutions (such as sodium hypochlorite) to eliminate bacteria hidden in the microscopic pores of the root walls.
8.Filling the Canals (Obturation)
After the canals are completely dry and sterile, they are sealed three‑dimensionally with a material called gutta‑percha (a plant‑based resin compatible with the body) and special sealers to permanently block any pathway for bacterial re‑entry.
9.Temporary Dressing or Final Restoration
Since the tooth becomes weaker and more fragile after root canal treatment, the dentist depending on the situation either places a temporary dressing or prepares the tooth directly for final restoration (post, composite, or crown).
Golden Tip for Patients: Root canal treatment is only half the journey; a tooth that has undergone root canal treatment no longer has blood supply and becomes fragile like a dry branch. After completing the treatment, be sure to consult your dentist about placing a crown or a strong composite restoration to prevent sudden tooth fracture.
Cause of Needing Root Canal Treatment
This section is extremely important for patient awareness, because many patients do not understand the necessity of root canal treatment until they experience severe pain. This content explains, in a simple yet scientific way, what actually happens inside the tooth.
When does a tooth need root canal treatment?
From the outside, a tooth appears as a hard, stone‑like structure. However, at its center there is a soft tissue called the pulp, which contains nerves and blood vessels.
When this tissue becomes infected or dies (necrosis) for any reason, the only way to save the tooth is root canal treatment.
Main causes that lead to root canal treatment
1.Deep and advanced tooth decay
This is the most common cause. When decay passes through the enamel and dentin and reaches the center of the tooth, bacteria enter the pulp and cause severe inflammation. At this stage, a regular filling is no longer sufficient.
2.Dental trauma
Sometimes after an accident or fall, there may be no visible fracture. However, the impact can interrupt the blood supply at the tip of the root. Over time, the tooth may die and become infected (and may gradually change color).
3.Deep tooth fractures
If a portion of the tooth breaks in a way that the protective layer over the nerve is lost, the nerve becomes exposed to the oral environment and quickly becomes infected.
4.Leakage under old fillings
Old restorations (especially amalgam fillings) may crack or develop micro‑gaps. Bacteria can slowly penetrate underneath the filling and infect the nerve without noticeable symptoms for a long time.
5.Gum infection and abscess
In some cases, infection from the supporting gum tissues can spread to the tip of the root and from there enter the tooth’s nerve. This condition is known as a periapical lesion.
Warning signs (Alarm symptoms)
If you experience the following symptoms, your tooth may require root canal treatment:
Spontaneous throbbing pain: pain that starts without a clear reason, especially at night.
Prolonged sensitivity to temperature: if pain lasts more than 30 seconds after drinking cold water or hot tea.
Tooth discoloration: a tooth becoming darker or gray compared to neighboring teeth.
Swelling or pimple on the gum: a small bump near the root of the tooth that may occasionally release pus.
Pain when touching or chewing: sharp pain even with light pressure or contact with the tongue.
Step / Key Point | Professional Description & Importance | Tools or Technology Used |
1. Definitive Diagnosis | Examination of infection depth and the exact length of the tooth root | Digital Radiography (RVG) |
2. Pain Elimination | Deep anesthesia for a completely calm treatment experience | Modern local injection techniques |
3. Sterilization | Isolation of the tooth from saliva to prevent bacterial contamination | Rubber Dam |
4. Canal Cleaning | Complete removal of infected and inflamed pulp with high precision | Rotary System |
5. Root Length Determination | Measuring the end of the root with tenth‑of‑a‑millimeter precision | Digital Apex Locator |
6. Root Sealing | Three‑dimensional filling of the canal to prevent bacterial leakage | Gutta‑Percha and Bioceramic Sealers |
7. Final Goal | Preservation of the natural root and prevention of tooth extraction | Dentist’s expertise and skill |
Suggested Note:
Below is a comparison table that presents the most important information in a clear and concise format. This table helps you quickly and accurately understand the differences, advantages, and limitations of each treatment option. At a glance, you can evaluate the purpose of each method, its durability, cost, and which option may be most suitable for your situation. The goal of this section is to make decision‑making easier and provide a clear perspective before starting treatment
We are here to help you make the best decision. To receive a free professional consultation and book an appointment with Dr. Hesam Nazari, please use the following methods:
Contact the Clinic (Landline): ☎️ +987153341322
Mobile & Urgent Consultation: 📱 +989031408680
Online Request: Fill out the form below, and our experts will contact you as soon as possible. 📩
Our commitment is to provide safe and painless services for your healthy smile. 🌿
Table of Contents
“All dental services, from general to cosmetic and specialized, are provided at this clinic. Below you can see some of the services.”
Aligner
(Invisible orthodontics)
Dental implant
(Dental implantation)
Dental laminate
(Cosmetic crown)
Composite veneer
(Composite crown)
Teeth bleaching
(Teeth whitening)
Overdenture
(Implant-supported prosthesis)
Dentures
(Replacement tooth)
Dental restoration
(Dental reconstruction)
These are some of our main services.
To view the full list of services and details of each treatment, visit the Services page
Root Canal Treatment Steps
To help patients at Dr. Hessam Nazari’s clinic understand exactly what to expect and book their appointment with confidence, the stages of root canal treatment (Endodontics) are explained step by step below.
Treatment Roadmap: Step‑by‑Step Root Canal Procedure
At our clinic, root canal therapy is a precise and carefully engineered process performed with modern technologies to help preserve your natural tooth for many years.
1. Imaging and Diagnosis (Imaging)
Before starting the procedure, a digital radiograph (RVG) is taken to evaluate the root length, canal curvature, and surrounding bone condition. This image works like a roadmap that guides the dentist throughout the treatment.
2. Deep and Comfortable Anesthesia (Anesthesia)
Many patients fear the pain of root canal treatment. At this stage, advanced anesthesia techniques and high‑quality anesthetic materials are used to completely numb the tooth and surrounding tissues so you feel no pain during the procedure.
3. Isolation and Sterilization (Rubber Dam)
For a successful root canal, the treatment area must remain sterile. A rubber dam (a special dental isolation sheet) is used to separate the tooth from saliva and oral bacteria, ensuring a clean and controlled environment.
4. Decay Removal and Access to the Pulp (Access)
The dentist removes decayed portions of the tooth and creates a small, precise opening to reach the pulp chamber where the nerve tissue is located. This step exposes the infected tissues for treatment.
5. Cleaning the Root Canals with Rotary System (Cleaning)
Using advanced rotary instruments (flexible rotating files), infected nerve tissue and blood vessels are carefully removed from the root canals. Rotary systems significantly increase precision compared to traditional manual techniques.
6. Digital Length Measurement (Apex Locator)
An apex locator device is used to determine the exact length of the root canals up to the root tip. This ensures thorough cleaning and greatly reduces the chance of reinfection.
7. Irrigation and Disinfection (Irrigation)
After mechanical cleaning, the canals are rinsed with specialized antimicrobial solutions to eliminate microscopic bacteria hidden within the canal walls.
8. Three‑Dimensional Canal Filling (Obturation)
The cleaned canals are sealed with a natural and biocompatible material called gutta‑percha. This step blocks the internal space of the root and prevents bacteria from re‑entering.
9. Final Restoration (Restoration)
After the root treatment is completed, the tooth is sealed with a temporary or permanent restoration. Because root‑treated teeth become more fragile, they are often restored with composite fillings or a dental crown to restore strength and function.
Advantages of Performing Root Canal Treatment at Dr. Hessam Nazari’s Clinic
High efficiency: With rotary technology, many treatments can be completed in a single session.
Millimeter‑level precision: Apex locator technology minimizes human error.
Tooth preservation: Our priority is saving your natural tooth whenever possible, reducing the need for dental implants
Essential Care After Root Canal Treatment
To help patients at Dr. Hessam Nazari’s clinic protect their newly treated tooth, this practical guide explains the most important care instructions after root canal treatment.
Post‑Treatment Care Guide (Root Canal Therapy)
Congratulations! By undergoing root canal treatment, you have saved your natural tooth from extraction. However, the process does not end here. A root‑treated tooth, due to the loss of its blood supply, becomes more fragile—similar to a “dry branch”—and requires special care.
1. Immediately After Treatment (First 2 Hours)
Do not eat until the numbness wears off: Because your lips, cheeks, and tongue are still numb, you may accidentally bite them and cause painful injuries.
Drinks: Cool or lukewarm drinks are allowed, but avoid very hot beverages.
2. Managing Pain and Inflammation
Post‑treatment pain is normal: For 3 to 5 days, you may feel discomfort when touching the tooth or chewing—even if you had no pain before treatment. This pain is caused by inflammation of the tissues around the root, not the tooth itself.
Take prescribed medication regularly: Take the medications recommended by your dentist (such as Gelofen or Novafen) at the scheduled times. Do not wait for severe pain before taking the medication.
3. Protecting the Temporary Filling and Tooth Structure (Very Important)
Be careful when chewing: Until the tooth receives its final restoration (composite filling or crown), avoid chewing hard foods such as nuts, hard fruits, crispy rice, or ice on that side. The tooth is very vulnerable to fracture at this stage.
If the temporary filling falls out: Temporary fillings may wear down slightly, which is normal. However, if the entire filling comes out, contact the clinic immediately to prevent bacteria from entering the cleaned canals.
4. Oral Hygiene
Brushing: Continue brushing all teeth normally. Clean around the treated tooth gently.
Flossing: When flossing near the temporary filling, avoid pulling the floss upward. Instead, slide it out sideways to avoid dislodging the filling.
5. Final Step: Crown or Permanent Restoration
Root canal treatment is only part of the process. Because a tooth without a nerve becomes more fragile, a crown or strong composite restoration should be placed within 2 to 3 weeks after treatment. Delaying this step may lead to tooth fracture and possible extraction.
“Our goal atDr. Hessam Nazari’s clinic is to preserve your natural smile. By following these simple instructions, a root‑treated tooth can function like a healthy tooth for many years.”
When Should You Contact the Clinic?
Please contact our clinic if you experience any of the following:
1.Severe swelling in the gum or face.
2.Allergic reaction to prescribed medications (itching, hives, or difficulty breathing).
3.Severe throbbing pain that continues after 3 days.
4.Complete loss of the temporary filling.
Stay in touch with us (Clinic of Dr. Hesam Nazari)
💬 Free Initial Consultation & Examination 🩺
✨ For a free specialized consultation and to book an appointment with Dr. Hesam Nazari, please contact us through the following methods:
📱 Mobile Consultation: +989031408680
☎️ Clinic Phone: +987153341322
📍 Address: Iran, Fars, Fasa, Shahzadeh Ghasem Square, opposite Asieh High School, Dr. Hesam Nazari Clinic
🕐 Working Hours: Saturday to Wednesday (8:00 AM – 22:00)
Thursday, Friday & Public Holidays: Closed
📩 Please fill out the form below for online booking, and we will contact you as soon as possible.
Why Choose Dr. Hessam Nazari’s Clinic
Choosing Dr. Hessam Nazari’s clinic for specialized dental services—especially root canal therapy and advanced restorations—is more than just a routine dental visit. This choice is built on technology, expertise, and professional commitment.
Here are five key reasons why patients choose this clinic to save their teeth:
1. Advanced Digital and Rotary Technology
We have moved beyond the era of manual files and guesswork in root canal treatment. At Dr. Nazari’s clinic:
Rotary System: Enables root canal cleaning with millimeter‑level precision, higher speed, and minimal noise.
Digital Apex Locator: Determines the exact length of the root canals, minimizing human error and increasing treatment success.
2. Priority on Preserving Your Natural Tooth
Dr. Hessam Nazari’s philosophy is based on conservative dentistry. We believe that no replacement—even dental implants—can truly match your natural tooth. Our goal is to use advanced endodontic techniques to save teeth that might otherwise be considered for extraction elsewhere.
3. A Truly Comfortable and Pain‑Free Experience
Fear of root canal treatment or dental restorations is one of the main concerns for many patients. At our clinic, we ensure a comfortable experience through:
Modern local anesthesia techniques
A calm, stress‑free environment
Quiet and advanced dental equipment
As a result, root canal treatment often feels as simple as a routine filling.
4. Standard Isolation with Rubber Dam
One of the major distinctions of this clinic is the mandatory use of a rubber dam during treatment. This ensures that:
The tooth remains completely sterile and saliva does not enter the canals.
Irrigation solutions do not reach the patient’s throat.
The longevity of both root canal therapy and composite restorations increases significantly due to a moisture‑free environment.
5. Transparency in Treatment Planning and Costs
We believe patients should be active partners in their treatment. Before starting any procedure:
Your radiographs and dental condition are carefully explained.
The reason for treatment (root canal or restoration) is clearly discussed.
All treatment steps and costs are transparently communicated from the beginning
Conclusion:Final Summary of Services
1.Saving Instead of Removing
Our first priority is preserving the natural root and structure of your tooth. Root canal treatment performed with modern technology (Rotary systems and Apex Locator) provides a second chance for teeth that may otherwise be recommended for extraction.
2.The Combination of Expertise and Technology
We believe a dentist’s knowledge achieves the best results when supported by precise technology. Standard isolation and the use of world‑class dental materials ensure the durability and long‑term success of your treatment.
3.A Different Dental Experience
Our goal is to change the way patients think about complex dental treatments. In our clinic, “pain‑free treatment” is not just a slogan—it is an essential part of the clinical protocol in every treatment session
All dental services — from A to Z — are provided in this clinic. Below, you can see a selection of the main treatments.
Impacted Wisdom Tooth Surgery
(Impacted Wisdom Tooth Surgery)
Wisdom Tooth Surgery
(Wisdom Tooth Surgery)
Oral and Maxillofacial Surgery
(Oral and Maxillofacial Surgery)
Root Canal Treatment (Endodontics)
(Root Canal Treatment)
Intraoral Scanner
(3D Scanning)
Periodontics
(Gum Treatment)
Orthodontics
(Jaw and Teeth Correction)
Dental Composite
(Composite Restoration)
You can see a selection of our clinic services here; for the full list, please visit the Services page.
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