Post Space Preparation
Post Space Preparation is a specialized dental service provided by the board-certified specialists at Aloha Dental Specialty Center in Beaverton, OR. Creating the foundation for a strong, lasting restoration after root canal treatment.
Post Space Preparation: The Critical Link Between Root Canal and Crown
After root canal treatment, some teeth lack sufficient coronal structure to retain a crown on their own. The solution is a post — a precision-fitted rod placed into one of the treated root canals that extends into the core buildup, anchoring the final restoration to the root. But before the post can be placed, the canal must be prepared: a specific length of gutta-percha is removed from the obturated canal, leaving an adequate apical seal while creating space for the post. This is post space preparation, and when it is done correctly, it sets up a restoration that can last decades. When it is done poorly, it can compromise the root canal seal, perforate the root wall, or create a short post that fails under occlusal load.
At Aloha Dental Specialty Center, post space preparation is performed by the clinician who understands both the endodontic seal and the restorative requirements. The procedure uses heated instruments or dedicated post drills to remove gutta-percha to a measured depth — typically leaving at least 4 to 5 millimeters of apical seal intact while creating a post channel equal to or greater than the crown height. A radiograph confirms the preparation depth and verifies that the apical seal has not been disturbed. Dr. Gvozden coordinates the post space dimensions with the planned restoration so the restorative dentist receives a prepared canal that accepts the post without further modification.
Timing matters. Post space is ideally prepared at the time of root canal obturation or within the first few weeks, before the sealer fully matures and the gutta-percha becomes difficult to remove cleanly. If post space preparation is delayed or performed by a provider unfamiliar with the original root canal anatomy, there is increased risk of ledging, deviation from the canal path, or disruption of the apical seal. Having the endodontic team prepare the post space eliminates these risks and ensures a clean handoff to the restorative phase.
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 smooth 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.
Biomechanics of Post Space Preparation
The purpose of an endodontic post is retention of the core buildup, not reinforcement of the root — a common misconception. Studies in the Journal of Prosthetic Dentistry demonstrate that posts do not strengthen root-canal-treated teeth and in fact create stress concentrations within the root that can lead to vertical root fracture if the post is oversized or over-tightened. The best post diameter is one-third of the root diameter at its narrowest point, and the post length should equal or exceed the height of the planned crown while preserving a minimum of 4 millimeters of apical gutta-percha seal. Fiber-reinforced composite posts have largely replaced metal posts for most applications because their modulus of elasticity is closer to dentin, distributing stress more evenly and reducing fracture risk. The preparation technique matters as much as the post selection — studies show that rotary post drills guided by the original canal path produce more concentric preparations with less dentin removal than freehand techniques.
Why Choose a Specialist?
Post space preparation at ADSC is performed by clinicians who treated the root canal and understand the canal anatomy from the inside out. Dr. Gvozden ensures that the apical seal is preserved while creating best post space geometry for the planned restoration. Radiographic verification confirms preparation depth and canal integrity before the patient is released for restorative treatment. This level of coordination between endodontic and restorative phases is a direct benefit of having both specialties under one roof.
Your Post Space Preparation Treatment Steps
- Consultation & Exam: Comprehensive post space preparation evaluation with CBCT 3D imaging at our Beaverton office.
- Treatment Plan: Board-certified specialist discusses your post space preparation 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 best 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 post space preparation 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.
Are You a Candidate for Post Space Preparation?
Most patients in good general health are candidates for post space preparation. 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 space preparation 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.
Related Dental Services
Frequently Asked Questions
What is post space preparation?
Post space preparation is the removal of a measured length of gutta-percha from a root-canal-treated tooth to create a channel for a retention post. The post anchors the core buildup that supports the final crown. It is a precision procedure that must preserve the apical seal of the root canal while creating adequate depth for post retention.
What is the purpose of a post in a root-canal-treated tooth?
A post provides internal support for teeth that have lost significant structure. After root canal therapy removes the pulp, a fiber or metal post is cemented into the root canal space, creating a foundation for a core build-up and crown. Not every root-canal-treated tooth needs a post — only those with insufficient remaining tooth structure to retain a crown on their own.
When should post space be prepared — during the root canal or later?
Ideally at the time of root canal obturation or within the first two weeks. The gutta-percha is easiest to remove cleanly immediately after placement, and the endodontist knows the canal anatomy from having just treated it. Delaying preparation increases difficulty and risk.
Can post space preparation damage the root canal seal?
If performed improperly, yes. Removing too much gutta-percha, generating excessive heat, or deviating from the canal path can compromise the apical seal. This is why we use calibrated depth stops, radiographic verification, and controlled removal techniques to ensure the seal remains intact.
What is the minimum apical seal that must be preserved?
A minimum of 4 to 5 millimeters of gutta-percha must remain at the apex of the root to maintain an effective seal. Research shows that apical seals shorter than 4 millimeters have significantly higher rates of bacterial leakage and treatment failure.
What type of post will be placed in the prepared space?
The most common choice today is a fiber-reinforced composite post, which has a stiffness similar to natural tooth structure and reduces the risk of root fracture. Metal posts are still used in specific situations. The post type is determined by the restorative plan and the amount of remaining tooth structure.
Is post space preparation painful?
No. The tooth has already had root canal treatment, so there is no living nerve tissue. The procedure is typically performed without anesthesia. You will feel pressure and vibration but no pain. If the surrounding gum tissue is sensitive, a small amount of local anesthetic can be applied.
How long does post space preparation take?
The procedure itself takes 15 to 20 minutes, including radiographic verification. It is often performed as a brief follow-up appointment after the root canal or as a dedicated short visit before the restorative appointment.
Does the post space need to be in a specific canal?
Yes. In multi-rooted teeth, the post is placed in the straightest and widest canal — typically the palatal canal in upper molars and the distal canal in lower molars. This provides the most predictable path for the post and preserves the most dentin in the root.
Can a post cause a root to fracture?
An oversized or overly rigid post can create stress concentrations that increase fracture risk. This is why proper canal selection, conservative preparation diameter (one-third of root width), and use of fiber posts with dentin-like flexibility are important. The goal is retention, not reinforcement.
What happens after the post space is prepared?
The prepared canal is left clean and dry, often with a temporary seal. Your restorative dentist then cements the post, builds up a core material around it, and prepares the tooth for a crown. Alternatively, at ADSC, the post and core can be placed at the same visit as the post space preparation.
Does insurance cover post space preparation?
Post space preparation is typically billed as a separate endodontic procedure code and is covered by most dental insurance plans under endodontic benefits. The post and core placement is a separate restorative procedure also covered by most plans. We verify your benefits before treatment.
Can a post space be prepared in a previously treated root canal?
Yes, though it may be more challenging. Older gutta-percha and sealer can be more difficult to remove cleanly. If the original root canal was performed at another office, a pre-operative radiograph or CBCT scan ensures we understand the canal anatomy before beginning preparation.
What if the tooth needs retreatment and a post?
If a previously root-canal-treated tooth needs retreatment and will also need a post, the retreatment is completed first. Once the canals are cleaned, reshaped, and re-obturated, post space is prepared at the same visit. This avoids contamination of the freshly treated canals during a separate post space appointment.
Is post space preparation done under microscope magnification?
At ADSC, microscope magnification is used when the canal anatomy warrants it — particularly in curved canals, calcified canals, or previously treated teeth where the original canal path may be obscured. Magnification ensures the preparation follows the canal path without deviation or perforation.
Need a Post and Core After Root Canal? We Prepare It Right
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