What This Guide Covers and Who It Is For
This guide helps you understand when a root canal can save a damaged molar and when extraction with an implant makes more sense.
If your dentist has told you that a molar needs either a root canal or an extraction, you are facing one of the most common treatment decisions in dentistry. General dentists frequently perform root canal treatment, and many also place implants or refer patients to specialists for these procedures. [1] The right choice depends on a handful of clinical factors that your dentist or specialist can measure and explain.
The sections below compare each treatment step by step. You will find information on success rates, costs, healing timelines, and the specific situations where one option clearly outperforms the other. The goal is to help you ask better questions at your next appointment so you and your provider can make a confident decision together.
Root Canal vs. Implant: Core Differences
A root canal keeps your natural tooth in place, while an implant replaces the entire tooth with a titanium post and a porcelain crown.
How a Root Canal Saves a Molar
During root canal treatment, also called endodontic therapy, the dentist or endodontist removes infected or damaged pulp tissue from inside the tooth. The pulp is the soft tissue containing nerves and blood vessels that sits inside each root canal. Once the canals are cleaned, shaped, and disinfected, they are filled with a biocompatible rubber material called gutta-percha. The tooth is then sealed. [2]
Because a molar that has had root canal treatment loses a significant amount of internal structure, it almost always needs a crown afterward. A crown is a cap, typically made of porcelain, ceramic, or metal alloy, that covers and protects the remaining tooth. Without a crown, a treated molar is more likely to fracture under chewing forces.
The main advantage of this approach is preservation. Your natural tooth root stays in the jawbone. The periodontal ligament, a thin layer of connective tissue between root and bone, continues to cushion biting forces and send sensory feedback to your brain. That feedback, called proprioception, helps you regulate bite pressure automatically. No implant can replicate this sensation. [2]
How an Implant Replaces a Molar
When a molar cannot be saved, the tooth is extracted and a dental implant can be placed in its position. An implant is a small threaded post, usually made of titanium, that a surgeon places directly into the jawbone. Over a period of typically three to six months, the bone grows around the post in a process called osseointegration. Once the implant is stable, an abutment connector is attached, and a custom crown is placed on top.
Implants do not decay. They do not need root canal treatment. They function independently of neighboring teeth, so healthy adjacent molars are left untouched. However, implants can develop peri-implantitis, a condition similar to gum disease, where the bone and tissue around the implant become inflamed and break down. Good oral hygiene and regular dental visits reduce this risk.
Implant treatment takes longer from start to finish compared to a root canal. If bone grafting is needed after extraction, the total timeline can stretch to nine months or longer before the final crown is placed.
Success Rates Compared
Both treatments have strong track records, but the numbers reflect different things. Root canal success is typically measured by whether the tooth remains functional and free of infection. Published literature reports molar root canal success rates above 85% to 95%, depending on tooth type, number of canals, and whether it is a first treatment or a retreatment. [2] Molars with complex anatomy or prior treatment tend to fall toward the lower end of that range.
Implant survival is measured by whether the implant post remains stable in bone over time. Research shows implant survival rates of approximately 95% at 10 years. Some studies report slightly higher numbers for implants in the lower jaw versus the upper jaw, because lower jawbone is typically denser.
It is worth noting that a root canal that fails can often be retreated, or the tooth can be extracted and replaced with an implant later. An implant that fails is harder to redo. Bone loss around a failed implant sometimes requires grafting before a second implant can be attempted.
Practical Details: Timing, Healing, and When a Tooth Cannot Be Saved
Knowing how each treatment fits into your schedule, healing capacity, and overall health helps you plan realistically.
When a Molar Is Too Damaged to Save
Not every molar is a candidate for root canal treatment. A vertical root fracture, which is a crack running lengthwise down the root, typically makes the tooth unsalvageable. The crack allows bacteria to enter the bone continuously, and no filling material can seal it.
Severe periodontal (gum) disease with deep bone loss around the roots is another disqualifier. If the bone holding the tooth in place has deteriorated beyond a certain point, saving the nerve inside the tooth will not fix the structural problem outside it.
A tooth with very little remaining crown structure may also be a poor candidate. If there is not enough healthy tooth above the gumline to anchor a crown, the restoration is likely to fail. Your dentist or endodontist will assess all of these factors with X-rays, sometimes a cone-beam CT scan (a 3D X-ray), and a clinical exam. [2]
Treatment Timelines
A root canal on a molar typically takes one to two appointments, each lasting 60 to 90 minutes. A crown is placed a few weeks later after a dental lab fabricates it. Total time from start to a fully restored tooth is often four to six weeks.
An implant follows a longer path. After extraction, the socket may need to heal for two to four months, or a bone graft may be placed at the same time. Implant placement surgery takes about an hour. Osseointegration then requires three to six months. Finally, the abutment and crown are placed over one to two additional appointments. Total time can range from four months to over a year if grafting is involved.
If you are currently in pain from an infected molar, a root canal provides faster relief. The infected tissue is removed during the procedure, and most patients feel significant improvement within a day or two.
Health and Age Considerations
Most adults are candidates for both treatments. However, certain medical conditions affect the decision. Uncontrolled diabetes, long-term bisphosphonate use for osteoporosis, radiation therapy to the jaw, and heavy smoking can all reduce implant success rates. Your surgeon will review your medical history carefully before recommending implant placement.
For younger patients who are still growing, implants are generally not placed until jaw growth is complete, usually in the late teens or early twenties. Saving a molar with a root canal is typically preferable for adolescents and young adults when the tooth is restorable.
Older adults can receive implants successfully as long as they are in reasonable health. Age alone is not a barrier. Bone density and overall medical status matter more than the number on a birthday.
What to Expect During Each Procedure
Both procedures use local anesthesia and are performed in a dental office or surgical suite, not a hospital.
Root Canal Treatment: Step by Step
The endodontist or dentist numbs the area around the molar. A small rubber sheet called a dental dam is placed over the tooth to keep it dry and free of saliva. An opening is made in the crown of the tooth to access the pulp chamber. [2]
Using small, flexible instruments and sometimes a dental microscope, the provider cleans and shapes each root canal. Molars typically have three or four canals, sometimes more. Irrigating solutions flush out bacteria and debris. The canals are dried and filled with gutta-percha, then the opening is sealed with a temporary or permanent filling.
You may feel mild soreness or sensitivity for a few days. Over-the-counter pain relievers typically manage this. A follow-up visit confirms healing, and you are then referred back to your general dentist or to a prosthodontist for the permanent crown.
Implant Placement: Step by Step
If the molar has not yet been removed, extraction happens first. The surgeon may place a bone graft, a small amount of bone material, into the socket to preserve volume for the future implant. The site heals for several weeks to months.
At the implant surgery appointment, the surgeon numbs the area, makes a small incision in the gum tissue, and drills a precise channel into the jawbone. The titanium implant post is threaded into this channel. The gum is sutured closed over or around the implant, and healing begins.
After osseointegration is confirmed, usually with an X-ray, the surgeon or restorative dentist attaches an abutment to the implant. An impression or digital scan is taken, and a dental lab creates the final crown. The crown is then cemented or screwed onto the abutment. You leave with a fully functional replacement molar.
Cost Ranges and Insurance Considerations
Root canal treatment with a crown on a molar typically costs less than extraction with an implant, though costs vary by location, provider, and case complexity.
A molar root canal generally ranges from $800 to $1,500 for the endodontic treatment alone. The crown adds another $1,000 to $2,000. Total out-of-pocket for saving the tooth typically falls between $2,000 and $3,500. [3]
Extraction, implant post, abutment, and implant crown together typically range from $3,000 to $6,000 or more. If bone grafting is needed, add $300 to $1,200 to that estimate. Costs vary by location, provider, and case complexity.
Most dental insurance plans cover a portion of root canal treatment and crowns because they fall under basic or major restorative care. Implant coverage is less consistent. Some plans cover part of the implant or the crown but not both. Others exclude implants entirely. Ask your insurance carrier for a pre-treatment estimate, sometimes called a predetermination, before committing to either treatment path. [3]
If cost is a significant factor, saving the tooth with a root canal is generally the less expensive option upfront. However, if the root canal has a lower probability of long-term success for your specific tooth, paying more now for an implant may cost less over a lifetime of maintenance and potential retreatment.
When to See a Specialist vs. a General Dentist
General dentists perform many root canals and some place implants, but certain cases benefit from a specialist's additional training and equipment. [1]
An endodontist is a dentist who has completed two or more additional years of training focused solely on diagnosing tooth pain and performing root canal treatment. They use dental operating microscopes and advanced imaging to locate hidden canals and cracks. You should consider seeing an endodontist if your molar has complex root anatomy, if a previous root canal on the same tooth has failed, or if the diagnosis is unclear. You can learn more on the endodontics page. [2]
An oral surgeon or periodontist typically handles the implant placement. They have specialized training in bone grafting, soft tissue management, and surgical site preparation. A prosthodontist, a specialist in tooth replacement, may design and place the final implant crown, especially in complex cases.
Your general dentist is often the best starting point. They can evaluate the tooth, take initial X-rays, and refer you to the right specialist based on what they find. In many dental practices, the general dentist coordinates care between specialists to keep the process efficient. [1]
Find an Endodontist or Implant Specialist Near You
If you are weighing a root canal against an implant for a molar, a specialist evaluation can give you a clear answer. Use the My Specialty Dentist directory to find an endodontist who can assess whether your tooth is savable, or an oral surgeon or prosthodontist who can plan an implant if extraction is the better option. Getting the right diagnosis from the right provider is the first step toward a confident decision.
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