Post-Removal Endodontics in Beaverton, OR
Post Removal Retreatment is a specialized dental service provided by the board-certified specialists Dr. Merat Ostovar and Dr. Jovan Gvozden at Aloha Dental Specialty Center in Beaverton, OR. When a previous root canal fails or complications arise from prior endodontic treatment, our specialists use advanced microsurgical techniques and CBCT imaging to retreat the tooth, remove old filling material, and restore long-term health.
Salvaging Teeth After Failed Root Canal Therapy
Post-removal endodontics refers to the process of retreating a tooth that has already undergone root canal therapy but continues to exhibit signs of infection, persistent symptoms, or radiographic pathology. At Aloha Dental Specialty Center, our endodontic specialists manage these complex retreatment cases daily, using operating microscopes with up to 25x magnification and cone-beam computed tomography (CBCT) to visualize anatomy that was missed or inadequately treated during the initial procedure. The goal is always the same: eliminate residual bacteria, seal the canal system three-dimensionally, and give the tooth the best possible chance of long-term survival.
Failed root canals occur for a variety of reasons. The original treatment may have left untreated canal anatomy — such as a second mesiobuccal (MB2) canal in an upper molar — or the obturation may not have extended to the radiographic apex, leaving a void where bacteria can proliferate. In other cases, a fractured instrument may be lodged in the canal, a ledge may have been created that prevented the clinician from reaching the full working length, or coronal leakage through a deficient restoration may have recontaminated the canal system over time. Each of these scenarios demands a different retreatment strategy, and our specialists have the training and technology to address every one of them.
The retreatment process begins with careful disassembly of the existing restoration and removal of the previous root canal filling material — typically gutta-percha and sealer, though older cases may involve silver points or carrier-based obturation systems. We use ultrasonic instruments, specialized retreatment files, and solvents such as chloroform or xylene to methodically remove every trace of old material. Once the canals are fully debrided, we use copious sodium hypochlorite irrigation activated with ultrasonic energy to disinfect the canal walls, followed by shaping and three-dimensional obturation with warm vertical condensation. Our patients benefit from the precision that only a dedicated endodontic specialist with fellowship-level training can provide.
Related Dental Services
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 our specialists for their fellowship-trained expertise and predictable results.
We handle the complex 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 After Endodontic Retreatment
First 24–48 Hours
Mild to moderate discomfort around the retreated tooth is normal. The area may feel tender to biting pressure as the periapical tissues begin to heal. Over-the-counter ibuprofen (600 mg every 6 hours) typically provides adequate relief. Avoid chewing on the treated side and stick to soft foods during this initial period. Some patients notice slight swelling of the gum tissue near the tooth — this usually resolves on its own within a day or two.
Days 3–7
Most patients return to normal eating habits within three to five days following retreatment. Any residual tenderness when biting should decrease steadily. Continue your normal oral hygiene routine — gentle brushing and flossing help keep the area clean. If antibiotics were prescribed due to active infection, complete the full course even if symptoms improve. Contact our office if pain intensifies rather than diminishes, as this may indicate the need for follow-up evaluation.
Weeks 2–12
Periapical healing is a gradual process that continues over several months. We schedule follow-up radiographs at intervals to monitor bone regeneration around the root apex. Your referring dentist should place the final restoration — typically a crown — within two to four weeks of retreatment to prevent recontamination through coronal leakage. Complete radiographic healing of a periapical lesion may take six to twelve months, and we track progress until resolution is confirmed.
Advanced Technology Behind Post-Removal Retreatment
Successful endodontic retreatment depends on complete removal of previous filling material and thorough disinfection of the entire root canal system. Our specialists use the dental operating microscope at magnifications between 8x and 25x, which reveals residual gutta-percha, separated instruments, calcified canal orifices, and microfractures that are invisible to the unaided eye. Cone-beam computed tomography (CBCT) provides three-dimensional visualization of root anatomy, periapical pathology, and the relationship of roots to critical anatomical structures such as the inferior alveolar nerve and maxillary sinus. We combine this imaging with electronic apex locators calibrated for retreatment scenarios to confirm working length accuracy even in the presence of residual filling material. Ultrasonically activated irrigation using 5.25% sodium hypochlorite creates acoustic streaming and cavitation within the canal system, disrupting biofilm that conventional syringe irrigation cannot reach. For cases involving separated instruments, we employ the Stieglitz forceps technique or ultrasonic trephining under microscopic visualization — removing the fragment without sacrificing unnecessary dentin and maintaining the structural integrity of the root. These technologies, combined with fellowship-trained expertise, give retreated teeth at our practice a success rate that aligns with published literature outcomes of 77–89% depending on clinical variables.
Why Choose a Specialist for Endodontic Retreatment?
Endodontic retreatment is among the most technically demanding procedures in dentistry. Unlike initial root canal therapy, retreatment requires the clinician to navigate through previous restorations, posts, and filling materials before the canal system can even be accessed for disinfection. General dentists perform root canals regularly, but retreatment demands a different level of training, equipment, and clinical judgment. At Aloha Dental Specialty Center, our endodontic specialists completed two to three additional years of residency training focused exclusively on saving teeth — including hundreds of retreatment cases under expert supervision. We invest in dedicated microsurgical equipment, ultrasonic platforms with specialized retreatment tips, and in-office CBCT imaging that most general practices do not have. When your referring dentist sends you to us for retreatment, they are ensuring you receive care from a clinician whose entire practice is built around managing complex endodontic problems. Our specialists have treated thousands of retreatment cases and understand the nuances that determine whether a tooth can be saved or whether extraction is the more predictable option. We give you an honest assessment and a clear treatment plan.
Your Post Removal Retreatment Treatment Steps
- Consultation & Exam: Comprehensive post removal retreatment evaluation with CBCT 3D imaging at our Beaverton office.
- Treatment Plan: Board-certified specialist discusses your post removal retreatment 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
From Our Endodontic Team: Saving Your Natural Tooth
“I always tell patients: if we can save your natural tooth, that’s the best outcome. A well-done root canal with a good crown can last 15-20 years or more. The key is thoroughness — finding every canal, cleaning every curve, and sealing the system completely.
We use dental operating microscopes for every endodontic procedure. Under 20x magnification, I can see things that are invisible to the naked eye — hairline cracks, calcified canals, missed anatomy from a previous treatment. This is why retreatments done under a microscope have significantly higher success rates than those done without one.
The honest truth is that not every tooth can be saved. If there’s a vertical root fracture, or if bone loss around the root is too severe, extraction and implant may give you a better long-term result. I’ll always give you my honest assessment — I’d rather tell you the truth than do a procedure that’s likely to fail.”
— Endodontic Team, 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.
Are You a Candidate for Post Removal Retreatment?
Most patients in good general health are candidates for post removal retreatment. However, certain factors may affect your eligibility or require modifications to the treatment plan:
- Medical conditions: Uncontrolled diabetes, autoimmune disorders, or blood-thinning medications may require coordination with your physician before treatment.
- Bone quality: For post removal retreatment involving the jawbone, adequate bone density is essential. A CBCT 3D scan during your consultation determines this precisely.
- Smoking: Tobacco use significantly impairs healing. We strongly recommend quitting 2-4 weeks before and after any surgical procedure.
- Age: There is generally no upper age limit. What matters is your overall health, not your age. We have successfully treated patients in their 80s and 90s.
The only way to know for certain is a consultation with our board-certified specialists. Call (503) 822-0096 to schedule your evaluation — we’ll tell you honestly whether this is the right treatment for your situation.
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.
Frequently Asked Questions About Post-Removal Endodontics
What is post-removal endodontics?
Post-removal endodontics refers to the retreatment of a tooth that previously received root canal therapy. The procedure involves removing the existing filling material (gutta-percha, sealer, and sometimes posts or separated instruments), re-cleaning and reshaping the canals, disinfecting the root canal system, and placing a new three-dimensional obturation. It is performed when the initial root canal has failed — meaning infection has persisted or recurred, often visible as a periapical radiolucency on X-ray or CBCT imaging.
Why would a root canal need to be retreated?
Root canals can fail for several reasons: missed canals that were not cleaned during the original treatment, inadequate obturation that left voids for bacteria to colonize, coronal leakage from a delayed or deficient final restoration, persistent infection in complex anatomy such as isthmuses or lateral canals, or reinfection from new decay that exposed the root canal system to oral bacteria. In some cases, a separated instrument or perforation from the original treatment contributes to persistent pathology.
How do you remove old root canal filling material?
We use a combination of techniques depending on the material present. For gutta-percha, we begin with heat-treated rotary retreatment files (such as ProTaper Gold Retreatment or D-RaCe) to engage and remove the bulk material, followed by solvent-assisted hand instrumentation to clear residual traces from canal walls and irregularities. Silver points are removed with Stieglitz forceps or ultrasonic vibration under the microscope. Carrier-based systems require careful sectioning. Throughout the process, we verify removal with the operating microscope at high magnification and periapical radiographs.
Is retreatment painful?
Retreatment is performed under local anesthesia, and most patients report the procedure is no more uncomfortable than the original root canal. We use profound anesthesia techniques including supplemental injections if needed to ensure complete numbness. Post-operative discomfort is typically mild to moderate and managed with over-the-counter anti-inflammatory medication. Patients with active infection prior to retreatment may experience slightly more post-operative tenderness as the infection resolves, but this is temporary and predictable.
What are the success rates for endodontic retreatment?
Published literature reports success rates for non-surgical retreatment between 77% and 89%, depending on clinical variables such as the quality of the coronal seal, preoperative lesion size, and the complexity of the root canal anatomy. Teeth retreated by endodontic specialists using contemporary microsurgical techniques and advanced imaging tend to fall at the higher end of this range. During your consultation, we assess your specific case and provide an honest prognosis based on the clinical findings.
How long does the retreatment procedure take?
Retreatment appointments typically last 60 to 90 minutes for premolars and 90 to 120 minutes for molars. The duration depends on factors such as the number of canals, the type and density of previous filling material, whether posts or cores need to be removed, and the complexity of the root anatomy. Some cases — particularly those involving calcified canals, separated instruments, or multiple complications — may require two appointments to complete.
Do I need a new crown after retreatment?
In most cases, the existing crown must be accessed or removed to reach the canals, which means a new restoration is needed afterward. If we can access the canals through the existing crown and the crown margins remain intact, a composite access closure may suffice. However, if the crown is compromised, we recommend your general dentist place a new crown within two to four weeks of retreatment to prevent coronal leakage — one of the leading causes of retreatment failure.
What happens if retreatment doesn’t work?
If non-surgical retreatment fails to resolve the infection, there are still options before extraction. Endodontic microsurgery (apicoectomy) allows us to approach the root apex surgically, remove the infected tissue, resect the root end, and place a retrograde filling. This procedure has success rates of 88–97% in published studies. We discuss all contingency options before beginning retreatment so you can make an informed decision about your care pathway.
Can a tooth with a post be retreated?
Yes, teeth with posts can be retreated, though the procedure is more complex. We use ultrasonic vibration to disrupt the cement bond around the post, then carefully remove it with specialized post-removal instruments under microscopic visualization. The goal is to remove the post without creating a perforation or weakening the root structure. Fiber posts are generally easier to remove than cast metal posts. We assess the feasibility and risks of post removal during the CBCT evaluation at your consultation.
How do you find canals that were missed in the original treatment?
Missed canals are one of the most common reasons for root canal failure. We use CBCT imaging to identify untreated canal anatomy before the procedure begins, then use the dental operating microscope during treatment to locate and negotiate these canals. Common locations include the MB2 canal in upper first molars (missed in up to 40% of initial treatments), the second distal canal in lower molars, and middle mesial canals. Ultrasonic tips help uncover calcified orifices that may have been invisible without magnification.
What is coronal leakage and why does it matter?
Coronal leakage occurs when bacteria from the oral cavity penetrate past the restoration and reach the root canal filling material. Studies have shown that an improperly sealed root canal can become recontaminated within days to weeks. This is why timely placement of a well-fitting permanent restoration after root canal therapy is critical. During retreatment, we eliminate the existing contamination, but long-term success depends on your general dentist placing a definitive crown or restoration promptly afterward.
Is retreatment better than extraction and an implant?
When a tooth has a reasonable prognosis for retreatment, preserving the natural tooth is generally preferred. Natural teeth maintain proprioception (the ability to sense biting forces), preserve alveolar bone, and do not carry the risks associated with implant surgery. However, if the retreatment prognosis is poor — due to a vertical root fracture, severe root resorption, or insufficient remaining tooth structure — extraction and implant replacement may be the more predictable long-term option. We provide an objective assessment of both pathways during your consultation.
Will my insurance cover endodontic retreatment?
Most dental insurance plans provide coverage for endodontic retreatment, though the benefit level may differ from initial root canal coverage. Some plans classify retreatment under a separate code with its own annual limitation. Our administrative team verifies your benefits before treatment and submits pre-authorization with clinical documentation — including radiographs and a narrative explaining the medical necessity — to maximize your coverage. We provide a detailed cost estimate so you understand your out-of-pocket responsibility before we begin.
What is the difference between retreatment and apicoectomy?
Retreatment is a non-surgical approach that accesses the canals through the crown of the tooth, removes the previous filling, re-cleans the entire canal system, and places new obturation material. An apicoectomy is a surgical approach that accesses the root tip through the bone, removes the last 3 mm of the root apex (where the most complex anatomy resides), and places a retrograde filling. Retreatment is typically the first-line approach; apicoectomy is reserved for cases where retreatment is not feasible or has already been attempted without success.
How soon can I return to work after retreatment?
Most patients return to work the same day or the following day after endodontic retreatment. The procedure is performed under local anesthesia, and the numbness typically wears off within two to four hours. Post-operative discomfort is generally manageable with over-the-counter medications. We recommend avoiding strenuous physical activity for 24 hours and not chewing on the treated side until your permanent restoration is placed by your general dentist.
Schedule Your Endodontic Retreatment Consultation
If your previous root canal is causing symptoms or your dentist has identified persistent pathology, our endodontic specialists can evaluate the tooth and determine whether retreatment can save it. Call us today to schedule a consultation with CBCT evaluation.
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