Root Canal Access Through Crown
Root Canal Access Through Crown is a specialized dental service provided by the board-certified specialists at Aloha Dental Specialty Center in Beaverton, OR. Systematic evaluation of failed root canals — CBCT-guided analysis to find the cause and plan the solution.
Endodontic Retreatment Planning: Finding Why the First Root Canal Failed and How to Fix It
When a root canal fails, the question is not simply whether to retreat — it is why the treatment failed and what specifically needs to be corrected. At Aloha Dental Specialty Center, Dr. Ostovar begins every retreatment evaluation with a comprehensive diagnostic workup: clinical examination, vitality testing of adjacent teeth, periodontal probing, and CBCT 3D imaging. The CBCT scan is the cornerstone of retreatment planning because it reveals the specific cause of failure — a missed canal, a short obturation, a periapical lesion, a separated instrument, a perforation, or a root fracture — in three dimensions. Without understanding the cause, retreatment becomes guesswork.
The retreatment planning process results in one of several recommendations. If the failure is caused by a correctable issue — missed canal, incomplete obturation, coronal leakage — conventional retreatment through the crown has the highest success probability and is the first-line option. If the original root canal filling appears adequate but a persistent periapical lesion remains, apicoectomy (root-end surgery) may be more appropriate. If CBCT reveals a vertical root fracture or advanced external resorption, the tooth may not be salvageable and extraction with implant planning becomes the honest recommendation. Dr. Ostovar presents these findings and options clearly, including success probabilities for each pathway, so you can make an informed decision.
Retreatment planning also involves assessing the restorability of the tooth. A tooth that is technically treatable endodontically may still be a poor investment if the remaining tooth structure cannot support a crown, if the crown-to-root ratio is unfavorable after root resection, or if the tooth has periodontal compromise that limits its long-term prognosis. Dr. Ostovar coordinates with your general dentist and, when needed, with a prosthodontist or periodontist to ensure that the retreatment plan addresses both the endodontic problem and the overall restorative picture.
Serving Beaverton, Aloha, Hillsboro & Washington County
Aloha Dental Specialty Center is located at 18455 SW Alexander St, Suite A, in Beaverton, Or 97003egon. We serve patients from across the Tualatin Valley and greater Portland metro, including Aloha, Hillsboro, Tigard, Lake Oswego, and Tualatin. Our Beaverton office is a 5-minute drive from Aloha, 10 minutes from Hillsboro, and 15 minutes from Tigard via SW 185th Avenue.
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Intel Campuses (Ronler Acres & Jones Farm)
10 to 15 minutes via NW 185th Ave. We accommodate the schedules of tech professionals who need efficient, high-quality specialty care.
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Nike World Headquarters
About 8 minutes via SW Baseline Rd. We frequently see patients from the Nike campus for surgical and implant procedures with sedation options.
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Streets of Tanasbourne & Orenco Station
Easily accessible via US-26 and NW 185th. Local general dentists in these communities regularly refer patients to us for specialty procedures.
Why Local Dentists Refer to Us
We work as a trusted partner to general dentists throughout the Tualatin Valley. When cases require CBCT-guided planning, IV sedation, bone grafting, or other advanced procedures, local providers refer to Dr. Ostovar for his fellowship-trained expertise and predictable results.
We handle the complex surgical phases and coordinate closely with your general dentist for seamless continuity of care from start to finish.
Understanding Your Investment
At Aloha Dental Specialty Center, we provide transparent pricing before any treatment begins. The cost of your procedure depends on clinical complexity, materials used, and sedation requirements. We walk you through every line item during your consultation so there are no surprises.
What Affects Cost:
- Clinical Complexity: Bone loss, sinus proximity, nerve involvement, or the need for grafting affects treatment planning and surgical time.
- Materials: We use research-backed implant systems, purified bone graft matrices, and high-strength ceramics from established manufacturers.
- Sedation: Options range from local anesthesia to IV sedation, each with different associated costs. We discuss the best option for your comfort and procedure.
Insurance & Financing
We accept most major dental insurance plans and file claims on your behalf. Our team verifies your benefits before treatment and submits pre-treatment estimates with clinical documentation to maximize coverage.
For out-of-pocket costs, we partner with CareCredit and Cherry for flexible payment plans. We also offer our ADSC Dental Savings Plan for patients without insurance.
Recovery & Healing Timeline
Understanding the healing process helps you plan ahead and follow post-operative instructions for the best possible outcome.
First 48 Hours
Mild swelling and tenderness are normal. Apply ice packs in 20-minute intervals and take prescribed or over-the-counter anti-inflammatory medication. Eat soft foods and avoid the surgical site when chewing.
Days 3 to 7
Swelling peaks around day three and then improves. The tissue begins closing over the surgical site. Continue with soft foods and use any prescribed antimicrobial rinse. Most patients return to normal activities during this phase.
Long-Term Healing
Surface tissue heals within two to three weeks. Bone integration and deep healing continue for three to six months. Avoid smoking, follow up as scheduled, and maintain good oral hygiene throughout recovery.
Questions during recovery? Call us at (503) 822-0096. We are available for post-operative concerns.
Systematic Approach to Failed Root Canal Analysis
The Toronto Study — a landmark longitudinal investigation of root canal outcomes — identified the primary predictors of failure: absence of periapical radiolucency at baseline predicts success above 96 percent, while teeth with large periapical lesions at baseline have success rates of 78 to 85 percent. Post-treatment factors include coronal seal quality (teeth with crowns had significantly higher survival than those with only intracoronal restorations), root filling length (fills within 2 millimeters of the radiographic apex had the best outcomes), and root filling density (voids visible on radiograph correlate with reduced success). CBCT-based retreatment planning allows the clinician to evaluate all of these factors three-dimensionally before beginning treatment, significantly improving the predictability of retreatment outcomes.
Why Choose a Specialist?
Dr. Merat Ostovar provides systematic retreatment consultations using CBCT 3D imaging, comprehensive clinical testing, and evidence-based outcome data to evaluate failed root canal cases. His 15-plus-year endodontic career includes hundreds of retreatment consultations and treatments, with a focus on honest prognosis communication and coordinated care with referring general dentists and specialists.
Your Root Canal Access Through Crown Treatment Steps
- Consultation & Exam: Comprehensive root canal access through crown evaluation with CBCT 3D imaging at our Beaverton office.
- Treatment Plan: Board-certified specialist discusses your root canal access through crown options, timeline, and costs. Our procedures maintain a 95%+ success rate, backed by advanced 3D imaging and evidence-based protocols.
- Treatment: Procedure performed with comfort options including sedation if needed.
- Follow-Up: Post-treatment monitoring and care coordination for optimal healing.
Schedule Your Appointment Today
Book a consultation with our board-certified specialists at Aloha Dental Specialty Center in Beaverton, OR. Call (503) 822-0096 Office hours: Monday through Friday 7 AM to 7 PM, Saturday and Sunday 8 AM to 2 PM. or request an appointment online.
Related Services at Aloha Dental Specialty Center:
Dental Implants · Oral Surgery · Root Canal · Invisalign · Periodontics · Pediatric · TMJ Treatment · Sedation · Cosmetic · Emergency · Sleep Apnea
A Note from Your Dental Team
In my experience, the patients who get the best results from root canal access through crown are those who come in with realistic expectations and follow their post-treatment instructions carefully. I’d rather spend extra time explaining what to expect than have a patient be surprised later.
“Every patient I see has a different story, a different set of concerns, and a different definition of what ‘success’ looks like. That’s why I don’t believe in one-size-fits-all treatment plans. When you come in for a consultation, I’ll listen first, examine second, and recommend third.
I also won’t recommend a procedure you don’t need. If your tooth can be saved with a filling instead of a crown, I’ll tell you that. If watchful waiting is appropriate, I’ll explain why. My job isn’t to sell treatment — it’s to give you my honest clinical judgment so you can make an informed decision.
If you have questions about whether this treatment is right for you, or if you’ve been told you need this procedure by another dentist and want a second opinion, call us at (503) 822-0096. We’re happy to take the time to explain everything — no rush, no pressure.”
— Dr. Merat Ostovar & Dr. Jovan Gvozden | Aloha Dental Specialty Center, Beaverton, OR
I know many patients feel anxious about dental procedures — you’re not alone in that. What I hear most often after treatment is: “That was so much easier than I expected.” We’re here to make this as comfortable as possible for you.
Typical Healing Timeline:
Days 1-3: Initial healing, mild swelling managed with ice and medication. Days 4-7: Swelling subsides, gradual return to normal diet. Weeks 2-4: Soft tissue heals completely. Months 2-6: Bone remodeling and full integration (for surgical procedures). Individual recovery varies — we provide detailed post-op instructions specific to your procedure.
For additional clinical information, visit the American Dental Association (ADA).
Last reviewed by our dental specialists: March 2026. Clinical information on this page reflects current evidence-based dental practices.
Related Dental Services
Frequently Asked Questions
How does the endodontist determine why my root canal failed?
Dr. Ostovar uses CBCT 3D imaging to examine the treated tooth from every angle, looking for missed canals, short or over-extended fills, separated instruments, perforations, root fractures, and periapical pathology. Clinical examination, vitality testing, and periodontal probing provide additional diagnostic information. Together, these reveal the specific cause of failure.
What are the most common reasons root canals fail?
The most common reasons are a missed canal (particularly MB2 in upper molars), incomplete disinfection, obturation that falls short of the apex, coronal leakage from a defective or delayed crown, new decay exposing the root canal to bacteria, and procedural complications such as separated instruments or perforations.
Is retreatment always possible for a failed root canal?
Not always. Teeth with vertical root fractures, advanced root resorption, insufficient remaining tooth structure, or severe periodontal bone loss may not be candidates for retreatment. The retreatment planning process determines whether treatment is feasible and what the expected success rate would be before you commit to the procedure.
What is the alternative if retreatment is not recommended?
If conventional retreatment is not feasible, alternatives include apicoectomy (root-end surgery) for teeth where the canal cannot be accessed from the crown, intentional replantation in rare cases, or extraction with replacement by a dental implant, bridge, or removable prosthesis. Dr. Ostovar discusses all options with their respective success rates.
How much does a retreatment consultation cost?
The retreatment consultation includes clinical examination, vitality testing, and CBCT imaging when indicated. The fee is comparable to other specialist consultations and is usually covered partially by dental insurance. We provide a cost breakdown before any treatment begins and apply the consultation fee toward the retreatment if you proceed.
Do I need a referral from my general dentist for a retreatment consultation?
A referral is not required. Many patients contact us directly for a second opinion on a failed root canal. However, we do work closely with referring dentists and will coordinate with your general dentist regarding the treatment plan and restorative needs if you choose to proceed with retreatment.
How long does the retreatment planning appointment take?
The consultation appointment typically takes 30 to 45 minutes and includes clinical examination, diagnostic testing, CBCT imaging (if indicated), review of findings, and discussion of treatment options. If the diagnosis is straightforward and you wish to proceed, retreatment can sometimes be started at the same appointment.
Will my insurance cover retreatment of a root canal?
Most dental insurance plans cover retreatment under endodontic benefits, though some have a waiting period (often five years) before retreatment of the same tooth is covered. We verify your specific benefits before treatment and provide a detailed cost estimate including any expected out-of-pocket responsibility.
Can CBCT imaging show a problem that regular X-rays miss?
Yes, frequently. CBCT detects missed canals, subtle periapical lesions, separated instruments, perforations, and root fractures that are not visible on conventional two-dimensional radiographs. For retreatment planning, CBCT changes the diagnosis or treatment plan in approximately 60 percent of cases compared to conventional imaging alone.
What questions should I ask during a retreatment consultation?
Key questions include: What caused the original root canal to fail? What is the expected success rate of retreatment for my specific case? Are there alternatives to retreatment? What happens if retreatment fails? How long will treatment take? What will it cost after insurance? Dr. Ostovar addresses all of these proactively during the consultation.
How does the endodontist assess whether my tooth is worth retreating?
The assessment considers three factors: endodontic prognosis (can the canal problem be fixed?), restorative prognosis (is there enough tooth left for a crown?), and periodontal prognosis (is the bone support adequate?). If all three are favorable, retreatment is a sound investment. If any factor is significantly compromised, extraction may be the better long-term option.
What if my tooth has a post — can it still be retreated?
Teeth with posts can often be retreated after careful post removal using ultrasonic vibration to loosen the cement bond. However, post removal carries a small risk of root fracture, particularly with cast posts in thin roots. CBCT imaging helps assess root wall thickness before attempting post removal, and alternative options like apicoectomy are discussed if the risk is too high.
How soon after a root canal can you tell if it failed?
Some failures manifest within weeks (persistent pain, swelling, sinus tract), while others take months or years to develop radiographic evidence of periapical pathology. Follow-up radiographs at 6 and 12 months after root canal treatment are standard for monitoring healing. Failure to show progressive bone healing by 12 months may indicate the need for retreatment.
Can I get a second opinion on a recommended retreatment?
Absolutely. We welcome patients seeking second opinions. Dr. Ostovar will independently evaluate your tooth with clinical testing and CBCT imaging, provide his assessment of the cause of failure, and discuss all treatment options with their expected outcomes. You are never pressured to proceed with treatment.
What is the success rate of retreatment compared to initial root canal treatment?
Initial root canal treatment by a specialist succeeds 92 to 98 percent of the time. Retreatment succeeds 77 to 89 percent of the time, reflecting the inherently more challenging nature of re-treating a tooth with a compromised history. Cases with clearly identifiable and correctable causes of failure have the highest retreatment success rates.
Previous Root Canal Failing? Get a CBCT-Guided Second Opinion
Call our Beaverton office or request an appointment online. We look forward to helping you.
Clinically Reviewed by Dr. Merat Ostovar, DMD
Doctor of Dental Medicine | Implant & Specialty Dentistry | 15+ Years Experience
Aloha Dental Specialty Center — Serving Aloha, Beaverton, Hillsboro & Greater Portland
Last updated: March 19, 2026