Why Root Canals Have a Bad Reputation
The fear of root canals is generational. In the 1960s and 70s — the era many of our parents and grandparents remember — root canal procedures were genuinely difficult. Anesthesia techniques were less advanced. The instruments were stiffer and harder to maneuver. Each appointment lasted hours. Many root canals were never fully completed and led to chronic discomfort.
By the 1990s, dentistry had largely solved these problems. Modern local anesthetics are far more effective. Rotary nickel-titanium instruments do the cleaning faster and more thoroughly. Digital X-rays and apex locators tell us exactly where the root tip is. The procedure that used to take 3 hours of misery now takes 60–90 minutes with most patients reporting comfort throughout.
In 2026, the experience of a root canal at a modern office is typically:
- A small injection of local anesthetic (less painful than a flu shot for most patients)
- 5 minutes of waiting while you go numb
- 45–60 minutes of the actual procedure during which you feel pressure but no pain
- Walking out and resuming your day
Yet the cultural memory of the “bad old days” lingers. We spend a lot of time at our Aventura office reassuring patients that what they fear isn’t what they’ll experience.
What a Root Canal Actually Does
Inside every tooth, beneath the outer enamel and dentin, is a small chamber containing nerve tissue and blood vessels — the “pulp.” The pulp keeps the tooth alive while it’s developing in childhood, but adult teeth don’t strictly need it.
A root canal is needed when the pulp becomes infected or inflamed, which usually happens after:
- A deep cavity reaches the pulp
- A crack in the tooth allows bacteria to enter the pulp
- Trauma damages the pulp’s blood supply
- A previous filling or crown placed too close to the pulp causes inflammation over time
Once the pulp is infected or significantly inflamed, it does not heal on its own. The infection will progressively worsen, eventually forming an abscess, spreading into the surrounding bone, and potentially into other parts of the body.
The root canal procedure:
- Removes all the infected and damaged pulp tissue from inside the tooth
- Cleans and disinfects the empty root canal space
- Fills the canal with a biocompatible material (usually gutta-percha)
- Seals the tooth so bacteria cannot re-enter
After the procedure, the tooth is no longer alive — but it remains functional. With a crown placed over it (which we usually recommend), a root-canal-treated tooth can last 20+ years.
Pain Levels — Before vs During vs After
Honest assessment of where the pain actually comes from:
Before treatment — this is where the real pain is. An infected or inflamed pulp causes sharp, throbbing pain that intensifies at night and may radiate to the ear, jaw, or temple. Cold liquids cause a jolt of pain. Heat sometimes triggers spontaneous pain. This is the pain people remember.
During treatment — usually minimal to none. You receive local anesthesia. The area is fully numb. You may feel pressure or vibration as the dentist works, but you should not feel pain. If you do feel pain at any point during the procedure, signal us — we add additional anesthesia.
After treatment — mild soreness for 2–4 days. The tooth and surrounding tissues are inflamed from the procedure. Over-the-counter ibuprofen (Advil) controls the discomfort effectively in nearly all cases. Most patients return to work the next day.
The narrative arc patients usually describe to us:
- “I was in agony for a week before I came in.”
- “The procedure itself was actually fine.”
- “I was a little sore for two days after.”
- “By day three I felt completely normal.”
That is the real experience of a modern root canal.
Step-by-Step: What Happens in Each Visit
Most root canals are completed in 1–2 visits depending on the complexity of the tooth.
Visit 1 — Consultation and X-ray (30 minutes). We diagnose the problem, take digital X-rays (or a CBCT scan for complex cases), and discuss treatment options. In some cases, if the tooth is severely infected, we prescribe antibiotics for 3–5 days before active treatment to reduce inflammation.
Visit 2 — The root canal procedure (60–90 minutes).
- Local anesthesia is administered.
- A small dental dam (a rubber sheet) is placed around the tooth to keep it clean and isolated from saliva.
- An access opening is made in the top of the tooth.
- The infected pulp is removed using small rotary instruments.
- The empty canal is cleaned, disinfected, and shaped.
- For laser-assisted treatment, we use a low-intensity dental laser to further disinfect the canal — this reduces bacteria significantly and helps healing.
- The canal is filled with gutta-percha and sealed.
- A temporary or permanent filling is placed over the access hole.
Visit 3 — Crown placement (about 2–4 weeks later, 60 minutes). For most molars and many premolars, we recommend placing a crown over the treated tooth. A root-canaled tooth becomes more brittle and is more prone to fracture under chewing forces — the crown protects it long-term. The crown is fabricated in our partner US lab and placed at a follow-up visit.
For some front teeth, a crown is not strictly necessary, and we may finish with just a high-quality composite filling instead.
Recovery — What’s Normal, What’s Not
Normal experiences after a root canal:
- Mild tenderness around the tooth for 2–4 days
- Slight discomfort when chewing on that side
- A “different” sensation in the tooth — this is normal as the tooth no longer has a nerve
- Need for over-the-counter ibuprofen (Advil) or acetaminophen (Tylenol) for 1–2 days
- Slight swelling of the gum near the tooth
Not normal — call us at (305) 339-5701 if you experience:
- Severe pain that worsens beyond day 3
- Significant facial swelling, especially with fever
- A persistent bad taste or pus from the tooth
- The temporary filling falls out
- Bite issues — if the tooth feels “too tall” or hurts only when biting down, the bite may need a small adjustment
Most issues resolve quickly with a brief office visit. The serious complications of a root canal — re-infection requiring a redo, or root fracture — affect less than 5% of treated teeth in modern practice.
Laser-Assisted Root Canal at Dentist of Aventura
Traditional root canals rely on mechanical cleaning of the canal — physically scraping the infected tissue out with small files — combined with chemical irrigation (typically sodium hypochlorite, a form of bleach) to dissolve remaining tissue and kill bacteria.
This works well in most cases, but root canals are anatomically complex. Each root has fine side branches and microscopic tubules that mechanical instruments cannot reach. Bacteria can remain in those branches and cause re-infection months or years later.
At Dentist of Aventura, we use laser-assisted endodontics for many root canal cases. After the mechanical cleaning is complete, a thin laser fiber is introduced into the canal. The laser energy penetrates into the dentinal tubules and kills bacteria far more effectively than chemical irrigation alone.
Benefits documented in research:
- 90–99% bacterial reduction (vs 50–80% with chemical irrigation alone)
- Lower re-infection rates over 5 years
- Less post-procedure inflammation
- Faster healing of surrounding tissues
The procedure isn’t necessary for every case, but for severely infected teeth, retreatments, and teeth with anatomically complex roots, the laser-assisted approach significantly improves long-term success.
Root Canal vs Tooth Extraction
When a tooth is severely damaged, patients sometimes ask: “Should I just have it pulled?”
Generally, saving the tooth is better. A natural tooth — even one that has had a root canal — is biologically integrated with the jawbone and surrounding tissues. It provides the right amount of biting force, the right spacing for adjacent teeth, and the right stimulation to keep the underlying bone healthy.
When extraction is the better choice:
- The tooth is fractured below the gum line (cannot be restored)
- The tooth has had a previous failed root canal and re-treatment has poor odds
- The patient cannot afford a crown and the tooth would fracture without one
- There is severe gum disease around the tooth that won’t resolve
- The tooth is significantly out of alignment and would create bite problems
If extraction is necessary, we recommend planning replacement immediately — either a dental implant ($3,500–$6,000) or a bridge ($1,500–$3,500). Leaving a gap leads to bone loss and shifting of adjacent teeth.
Cost comparison:
- Root canal + crown: $1,800–$3,300 total
- Extraction + dental implant + crown: $4,500–$8,000 total
- Extraction + bridge: $2,000–$4,500 total
- Extraction with no replacement (not recommended): $300–$800
For a tooth that can be saved with a root canal, saving it is usually both the best clinical and best financial choice.
Frequently Asked Questions
Q1. How long does a root canal take?
Most root canals at our office take 60–90 minutes for the actual procedure. Patients with severe infection may need a preliminary antibiotic course before treatment. Complex molars with multiple canals occasionally require two visits about 1–2 weeks apart.
Q2. Can a root canal fail?
Yes, but rarely. About 5–10% of root canals need re-treatment within 10 years. The most common reasons are bacteria remaining in microscopic side canals (which laser-assisted treatment helps prevent), the crown not being placed promptly, or new decay developing around the restoration.
Q3. Do I need a crown after a root canal?
For molars and premolars: yes, almost always. The tooth becomes brittle without its blood supply and will likely fracture without crown protection. For front teeth (incisors and canines): often the tooth can be restored with a strong filling instead, since these teeth experience less biting force.
Q4. How much does a root canal cost in Aventura?
A root canal at our office typically costs $900 for a front tooth, $1,100 for a premolar, and $1,200–$1,500 for a molar (which has more canals). Add $1,000–$1,800 for the crown. Insurance usually covers 50–80% of root canal treatment under restorative benefits.
Q5. What happens if I delay treatment?
Untreated tooth infections worsen, not improve. The pain typically intensifies. Over time, the infection spreads into the surrounding bone, sometimes forming an abscess that can rupture and spread to other parts of the body. Severe dental infections have led to hospitalization and, very rarely, to life-threatening complications.
Q6. Is a root canal safe for pregnant women?
Yes. Untreated dental infections during pregnancy are far more dangerous than a routine root canal. We coordinate with your OB-GYN to plan treatment, typically in the second trimester. Local anesthesia is safe; we avoid certain antibiotics that aren’t recommended in pregnancy.
Q7. Are root canals linked to cancer or other diseases?
No. This is a myth circulating online based on a debunked 1925 study by Dr. Weston Price. Modern, properly performed root canals have no documented link to cancer or systemic disease. The American Dental Association, the American Association of Endodontists, and decades of peer-reviewed research support root canal safety. Leaving an infected tooth untreated is far more dangerous than treating it.
About the author
Dr. Elaine Perez-Gutierrez, DMD is a general and surgical dentist at Dentist of Aventura, licensed in both the United States and Cuba. She holds a Doctor of Dental Medicine (DMD) degree and brings a wealth of international training in evidence-based dentistry to her practice. Her clinical focus includes advanced oral surgery and implantology — same-day extractions and implant placement, full-arch All-On-X restorations, bone augmentation, sinus lift procedures, and complex restorative cases. She also performs cosmetic and restorative work including porcelain veneers, zirconia crowns, bridges, and root canal therapy. Read her full bio here.
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