Root canal therapy treats a tooth whose pulp, the soft tissue inside containing nerves and blood vessels, has become infected or irreversibly inflamed. At Sky Dental Centre, Dr. Ahmed Al-Obaidi (BDS, DDS) provides root canal treatment within his general dental practice, aimed at relieving pain and saving your natural tooth wherever the prognosis genuinely supports it.
Each tooth contains a pulp chamber and root canals housing nerves, blood vessels, and connective tissue. When the pulp becomes infected, from deep decay, a cracked tooth, trauma, or a failed restoration, bacteria can cause significant pain and, if untreated, spread infection to the surrounding bone.
Root canal therapy removes the infected or inflamed pulp, cleans and shapes the internal canals, and fills and seals them with a biocompatible material. The outer structure of the tooth remains, allowing it to continue functioning in your bite. Retaining a natural tooth is generally preferred over extraction where the prognosis is reasonable, extraction without replacement leads to bone loss and can cause adjacent teeth to shift.
Root canals relieve pain, they don’t cause it. The pain patients dread is from the infection that precedes the procedure, not the procedure itself. Many root canals complete in one to two visits. With a proper crown, root-canal-treated teeth can last decades. Pulling the tooth is not always the better option, preserving a natural tooth is generally preferred clinically.
Your natural tooth root stimulates the surrounding jawbone, maintains spacing, and distributes bite forces in a way no prosthetic can fully replicate. Saving a natural tooth with root canal therapy preserves all of that, which is why it is preferred over extraction whenever clinically viable. Replacing a tooth with an implant involves more treatment, more time, and generally more cost.
Root canal therapy is indicated when the dental pulp has become irreversibly inflamed or infected, from deep decay, a crack extending into the pulp, trauma, or a large failing restoration. It is also indicated when a periapical abscess has formed at the root tip. Not every toothache requires a root canal; the consultation determines what is actually occurring clinically before any treatment is recommended.
Certain symptoms are more strongly associated with pulp involvement and warrant prompt assessment rather than waiting to see if they resolve, though not every toothache means you need a root canal.
Throbbing pain that doesn’t subside, particularly pain that lingers after the stimulus is removed or wakes you from sleep, indicates pulp inflammation or infection. Sensitivity to heat or cold persisting more than 10–15 seconds after the stimulus is removed (especially to heat) often indicates irreversible pulpitis: inflammation that won’t heal on its own.
A small raised spot on the gum near a tooth (fistula or parulis) indicates an abscess draining through the gum, a sign of active infection. Facial swelling spreading toward the jaw or neck requires immediate attention. A tooth that gradually turns grey or dark brown without external cause has often undergone internal pulp breakdown, dead pulp releases breakdown products that discolor the tooth from within.
Discomfort when chewing or touching a specific tooth suggests inflammation has spread to the periodontal ligament around the root, a progression from initial pulp involvement. Often accompanied by a sensation that the tooth feels raised or elevated. The tooth is responding to bite pressure that would previously have been pain-free.
Sometimes extensive decay or a significant crack has reached the pulp without causing noticeable pain, particularly if the pulp has begun to die. In these cases, the need for root canal therapy is identified during a routine examination. Asymptomatic doesn’t mean safe to leave untreated, the infection continues silently, causing bone destruction visible on X-ray.
Certain symptoms are more strongly associated with pulp involvement and warrant prompt assessment rather than waiting to see if they resolve, though not every toothache means you need a root canal.
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A clinical exam and X-rays confirm the pulp is affected and that root canal therapy, described in more clinical detail by the American Association of Endodontists, is the appropriate path forward for the tooth. The area is thoroughly numbed before any work begins, the procedure is designed to relieve pain, not cause it.
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A thin rubber barrier isolates the tooth from the rest of the mouth, keeping it dry, preventing contamination by saliva, and stopping irrigating solutions from reaching the throat. A small opening is then made through the crown of the tooth to access the pulp chamber. The infected or inflamed pulp tissue is carefully removed using fine files designed to navigate the narrow root canals.
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Canals are shaped progressively while being continuously irrigated with antimicrobial solution (typically sodium hypochlorite) to disinfect the canal system including areas instruments cannot directly reach. Once cleaned, dried, and confirmed free of infected tissue, canals are filled and sealed with gutta-percha, a biocompatible thermoplastic material. A sealer cement ensures a complete hermetic seal. X-rays confirm proper fill length and density.
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Root canal therapy alone doesn’t complete the restoration. A tooth that has had root canal treatment becomes more brittle over time, removal of the living pulp means it no longer receives internal moisture and nutrients. A permanent crown is almost always required to protect the treated tooth from fracture under chewing forces. Crown placement is at a separate planned appointment after confirming the root canal is successful.
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Most patients return to normal daily activities the day after treatment. Soreness when biting on the tooth typically peaks around 48–72 hours then gradually subsides. By the end of the first week, most patients are comfortable. Full healing at the root tip, resolution of any periapical lesion visible on X-ray, occurs over months; follow-up X-rays at subsequent check-ups confirm healing is progressing.
Certain symptoms are more strongly associated with pulp involvement and warrant prompt assessment rather than waiting to see if they resolve, though not every toothache means you need a root canal.
Eliminates the source of tooth pain, most patients leave the appointment with significantly less discomfort than they arrived with
Saves the natural tooth, avoiding extraction and the subsequent need for an implant or bridge, which involves more treatment, more time, and generally more cost
Stops the spread of infection to adjacent teeth, bone, and surrounding tissue, an untreated dental abscess continues to cause progressive bone destruction and risks escalation
Preserves jawbone at the treated tooth site, unlike an extracted tooth, which allows bone resorption over time, reducing the bone available for future implant placement
With a proper crown, a root-canal-treated tooth can function normally for many years; long-term success rates for initial treatments are generally cited at approximately 85–95%
Post-treatment soreness is normal. Once the anesthetic wears off, mild to moderate soreness for 2–5 days is expected, particularly when biting on the treated tooth. This is inflammation of the surrounding tissue settling, not a sign something went wrong. Over-the-counter ibuprofen is generally effective.
Success rates are high but not absolute. A small percentage of cases develop persistent or recurrent infection, sometimes manageable with retreatment or apical surgery, occasionally requiring extraction. Prognosis is discussed honestly for your specific case at the consultation.
Anesthesia sometimes needs a second approach. Acutely infected teeth can be more resistant to standard local anesthetic. If you’re still feeling sharp pain after the initial injection, supplemental techniques are available and treatment won’t proceed until you’re genuinely comfortable.
Not every tooth is a viable candidate. Teeth with vertical root fractures extending to the bone, or with severely compromised root structure, cannot be saved by root canal therapy alone. When this is the case, Dr. Al-Obaidi explains the situation directly and discusses the alternatives.
A dental infection cannot resolve on its own. Untreated, it causes progressive bone destruction and risks spreading to adjacent teeth and tissues. If you are experiencing persistent tooth pain, calling for an assessment is the right first step, not waiting to see if the pain goes away.
Eat normally before your appointment, the procedure uses local anesthetic only and doesn’t require fasting. If you are taking antibiotics prescribed for the infection, continue the full course as directed and bring a complete medication list. Let the team know in advance if you experience high dental anxiety, adequate time can be allocated and comfort options discussed beforehand.
Root canal treatment is performed entirely under local anesthesia, you will feel pressure, movement, and hear sounds, but sharp pain should not occur. Duration depends on the tooth: front teeth with a single canal may take 45–60 minutes; back molars with multiple curved canals can take 90 minutes or longer. After treatment, avoid chewing on the treated side where possible, particularly before the permanent crown is placed. Take ibuprofen or prescribed medication as directed.
Maintain normal brushing and flossing. Avoid very hard or crunchy foods on the treated side throughout the period between root canal completion and crown placement. If significant worsening of pain, swelling, or a persistent bad taste develops in the days following treatment, contact the clinic promptly. Follow-up X-rays at subsequent check-ups confirm healing is progressing as expected over the months following treatment.
Root canal costs vary based on several clinical factors. An accurate estimate requires an examination, the cost for your specific tooth is confirmed at the consultation and provided in writing before treatment begins.
Front teeth (incisors and canines) typically have one or two canals and are less complex. Premolars may have one or two. Molars commonly have three or four canals and are the most technically demanding due to curved roots and complex anatomy. The number of canals and complexity of the root system are the primary factors in root canal fee variation.
The consultation includes clinical examination and digital X-rays, these diagnostic components carry their own fees and are necessary for accurate treatment planning. Where significant tooth structure has been lost to decay or a large previous filling, a composite core build-up may be required before crown preparation can proceed, representing an additional procedure with its own fee.
Root canal treatment fees typically cover the endodontic procedure itself. A crown, required for most root-canal-treated posterior teeth, is a separate restorative procedure with its own fee. Both are discussed and estimated at the consultation so you have a clear picture of the full treatment investment before committing to either component.
Most Ontario dental benefit plans include partial coverage for root canal therapy and for crowns. Coverage percentages and annual maximums vary considerably by plan. Sky Dental Centre can submit a pre-determination letter to your insurer before treatment begins, so you have clarity on your expected out-of-pocket costs before making any decisions. A complete written cost breakdown is provided before any treatment commitment is made.
A tooth treated with root canal therapy, particularly a molar or premolar, almost always needs a crown afterward to protect it from fracture in the longer term, and Sky Dental Centre manages both stages without referral.
A tooth treated with root canal therapy, particularly a molar or premolar, almost always needs a crown afterward to protect it from fracture in the longer term, and Sky Dental Centre manages both stages without referral.
Where the prognosis for saving a tooth is genuinely poor, due to extensive infection, fracture, or bone loss, extraction may be the more appropriate path than attempting a root canal with a low chance of long-term success, and our dentist will say so honestly.
Severe, unrelenting tooth pain from suspected pulp infection is one of the more common reasons patients contact us for same-day emergency assessment, broken tooth emergency, and root canal treatment often follows directly from that initial urgent visit.
Root canal anxiety is almost entirely founded on the anticipation of pain that, with properly administered local anesthesia, doesn’t materialize. Our trusted dentists takes the anesthesia step seriously, including supplemental injection techniques for acutely infected teeth. The procedure doesn’t begin until the area is genuinely numb. Every root canal is preceded by appropriate radiographic evaluation of root anatomy, canal number, and surrounding bone, no surprises mid-appointment. When a tooth has a poor prognosis, due to fracture, bone loss, or structural compromise, this is communicated directly. Treatment is only recommended when the clinical picture supports a reasonable expectation of a successful outcome.
Dr. Al-Obaidi provides root canal therapy within a general practice that also manages the crown placement that follows. The restorative plan is considered from the moment the root canal is assessed, the crown is planned as part of the clinical picture from the outset, not as a separate afterthought. Root canal treatment involves working with infected tissue and requires a sterile working environment: hospital-grade instrument sterilization, barrier protocols, and appropriate clinical technique are maintained at every appointment.
Located at 2817 Arthur St E in east Thunder Bay, Sky Dental Centre is accessible from across the city and surrounding Northwestern Ontario communities. For patients in dental pain, having a consistently reachable clinic without significant travel makes the decision to seek care promptly more practical. Currently accepting new patients for root canal therapy and all associated restorative work.
Questions patients commonly ask before and after root canal treatment. If yours isn’t here, call the clinic, we’re happy to answer before you book.
Root canal therapy is performed under local anaesthesia and is designed to relieve the pain caused by pulp infection, not to cause it. Most patients report pressure and vibration during the procedure rather than significant pain, since the area is thoroughly numbed before any work begins. Post-procedure soreness for a few days afterward is common and typically manageable with over-the-counter pain relief, similar to the recovery from a filling. The reputation root canals have for being painful largely reflects the discomfort of the untreated infection itself, not the treatment that resolves it, and most patients describe the procedure as far more comfortable than they expected going in.
Symptoms such as persistent toothache, prolonged sensitivity to heat or cold, pain on biting, swelling in the gum, or a visible abscess may indicate pulp involvement and are worth having assessed promptly. Some affected teeth produce few or no symptoms at all, which is one reason regular checkups and X-rays matter even when nothing feels obviously wrong to you. A dentist cannot confirm whether a tooth needs root canal therapy from a description alone, a clinical exam and imaging are needed to see what is actually happening inside the tooth. If you are experiencing any of these signs, book an assessment rather than waiting to see if the discomfort resolves on its own.
In most cases, retaining the natural tooth through root canal therapy is preferred where the prognosis is reasonable, since a natural tooth maintains bone stimulation and generally functions more comfortably than a replacement. That said, extraction can be the more appropriate option when the extent of infection, fracture, or structural damage means the tooth’s long-term prognosis is genuinely poor. Our dentist discusses both options and their clinical implications for your specific situation rather than defaulting to one answer for every case. If extraction is recommended, tooth replacement options are discussed at the same appointment so you understand the full picture before deciding anything.
Simple cases may be completed in a single appointment, particularly when the infection is limited and the canal anatomy is straightforward to access and clean thoroughly. Cases involving significant infection, complex canal anatomy, or a staged treatment approach may require two appointments, with time between them to let inflammation settle before completing treatment. Our dentist advises on the expected number and length of appointments at the assessment, based on what the X-rays and clinical exam actually show for your specific tooth. Bringing any prior dental records or X-rays from a referring source can also help with planning before your first visit takes place.
Root canal cost depends on which tooth is affected, molars with more canals generally cost more than front teeth to treat properly, and on whether the case is straightforward or requires a referral for specialist endodontic care. The crown or restoration needed afterward is priced separately from the root canal procedure itself. Sky Dental Centre provides a written cost estimate before any treatment begins, and our dedicated guide to root canal pricing in Ontario covers typical price ranges in more depth if you want a general sense before your consultation. If cost is a concern, raising it directly at your consultation lets our team walk through the specific factors affecting your case and any financing or payment options available before you commit to treatment.
SERVING THUNDER BAY
Sky Dental Centre is located at 2817 Arthur St E, Thunder Bay, Ontario, P7E 5P5 — in the east end of the city, accessible from across Thunder Bay including Current River, Vickers Heights, Westfort, McIntyre, and communities throughout Northwestern Ontario.
Dental emergencies are unplanned by definition. When they happen — at night, on a weekend, or in the middle of a working day — knowing who to call and where to go matters. Sky Dental Centre provides same-day emergency appointments and can triage your situation by phone to advise on urgency and prepare appropriately for your arrival.
Sky Dental Centre is currently accepting new patients for both emergency and routine care. If you’re in dental pain or have experienced a dental injury, call the clinic directly rather than waiting to see if it resolves.
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