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A diagram of dental implant at Periodontal Associates. Dental implants are a highly effective solution for lost teeth. Crowns mimic natural teeth in their form and function and titanium posts bond with and stimulate your jaw bone, allowing the Dental Implants to act just like a natural tooth would.

Unfortunately, implants can occasionally fail, and if this happens we will need you to come in so we can repair or replace them.

The Structure of an Implant

Most dental implants are made of a titanium post that is embedded in the jaw bone, a ceramic crown that acts as a replacement tooth and an abutment that connects the post and the crown. If one of these parts loosens or breaks, all three can become compromised.

Titanium is usually chosen for implants because it bonds with the jaw bone in a process known as osseointegration. If this process doesn't occur properly then you'll end up with an implant that isn't firmly in place. This will lead to problems later on.

Signs that an Implant May Fail

If the bone doesn't grow around the implant in the right way, mobility is often the primary signal that the implant may fail. This mobility is often very slight at first and usually only a dentist can see it, but as time goes on an implant that hasn't integrated properly can shift when you chew or speak. Implants that have failed completely with frequently.

Other warnings signs of impending failure include pain, inflammation, and infection, but these do not always occur. If Dr. Eshraghi notices that your implant is moving, he may conduct an x-ray to make sure the bone is growing. If the implant is failing, the x-ray may reveal considerable bone loss around the metal area.

Repair and Replacement

In cases where the implant crown becomes cracked or detached, it is an easy matter for us to attach a new, or make any other repairs if necessary. However, if the damage to the implant is too severe, we will need to remove and replace it.

It is easy for us to remove a failed dental implant, but we will need to use a local anesthetic for this procedure. Once the implant is removed Dr. Eshraghi will carefully clean the area. Then we can begin the process of inserting a new implant, making careful note of what went wrong the first time. If there is enough healthy bone in the same area, we won't need a bone graft.

However, in cases of significant bone loss, we may need to place a bone graft to improve the site of the removed implant before placing a new one. Once the bone graft is complete, your mouth may need several months to heal before we can put in a new implant. During the healing period, Dr. Eshraghi may ask you to quit smoking, postpone cancer treatment or make other lifestyle adjustments that will reduce the risk of the next implant failing as well.

Always remember to take good care of your implants by brushing and flossing daily. Also take care to eat a balanced diet and abstain from using your teeth as tools, as this can chip them. If you experience any problems with your Dental Implants, contact us right away.

If you have any other questions or concerns, please give us a call at (971) 317-8414.
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Meet the Doctors

Portland Magazine Top Dentist
Dr. Eshraghi at Periodontal Associates

Dr. V. Thomas Eshraghi

Dr. Eshraghi received his Bachelor of Science degree from Portland State University in 2002, and both his DMD and Specialty Certificate in Periodontics from Oregon Health and Science University in 2006 and 2009 respectively. Dr. Eshraghi is a Diplomate of the American Board of Periodontology, the highest level of achievement in the field.

He maintains private practices in Beaverton and Tualatin, OR and remains affiliated with OHSU as an assistant clinical professor and actively teaches advanced surgical skills including implant placement. He is passionate about teaching and is pioneering the use of advanced computer aided technologies such as CT scans, CAD/CAM guided surgery, 3D printing and dynamic navigation into the practice of periodontics.

Click here to read more about Dr. Eshraghi

Highlights of his qualifications:

•  Board certified Diplomate American Board of Periodontology
•  Has over 15 years of experience in periodontal surgery including dental implant placement and bone reconstruction.
•  Part time assistant clinical instructor OHSU Graduate Periodontics
•  Routine national lecturer on implantology, periodontics and advanced integration of the latest technologies with periodontics.


Book Chapters

Role of Cone-Beam Computed Tomography in the Management of Periodontal Disease.
Eshraghi VT, Malloy KA, Tahmasbi M. Dent J (Basel). 2019 Jun 1;7(2).

Eshraghi VT, McAllister B: Clinical Applications of a Stem Cell Based Therapy for Oral Bone Reconstruction (2017) Editors: L'Heureux, Li and Elisseeff, Stem Cells and Tissue Engineering.


Use of Soft-Tissue and Bone Grafting to Treat Complex Recession With Root Prominence and Buccal Plate Deficiencies.
McAllister BS, Eshraghi VT, Malloy KA. Compend Contin Educ Dent. 2018 Sep;39(8):564-569.

Commentary: Cone-Beam Computed Tomography: An Essential Technology for Management of Complex Periodontal and Implant Cases.
McAllister BS, Eshraghi VT.
J Periodontol. 2017 Oct;88(10):937-938. doi: 10.1902/jop.2017.1710001.

Alveolar Ridge Augmentation with Allograft Stem Cell-Based Matrix and Titanium Mesh. McAllister BS, Eshraghi VT. Clinical Adv Periodont. 2013 Vol. 3, No. 1

Clinical applications of digital 2-D and 3-D radiography for the periodontist.
Eshraghi T, McAllister N, McAllister B.
J Evid Based Dent Pract. 2012 Sep;12(3 Suppl):36-45.

Dr. Eshraghi is an active and prominent member of:

•  Academy of Osseointegration
•  American Academy of Periodontology
•  Oregon Society of Periodontists
•  American Dentistry Association
•  Oregon Dental Association
•  Washington County Dental Association


LANAP certified clinician

Dr. Mari Heslinga at Periodontal Associates

Dr. Mari Heslinga

Dr. Heslinga grew up in Honolulu, Hawai’i. She earned her Bachelor’s and Doctor of Dental Surgery degrees at the University of Iowa, then completed her periodontics residency at Oregon Health & Science University. Her Master’s research focused on tissue engineering and stem cells. As a resident, she treated patients with complex medical conditions in the Portland Veterans Affairs Medical Center. She offers a full scope of periodontal and implant procedures including gum grafting, bone grafting, and dental implant placement to help her patients achieve a healthy oral foundation and confident smile.

Click here to read more about Dr. Heslinga


Board certified by the American Board of Periodontology


•  American Academy of Periodontology
•  International Team for Implantology
•  American Dental Association
•  Oregon Dental Association
•  Multnomah County Dental Association


Effects of Calcium Phosphate On Endothelial Cells within 3D Printed Pre-Vascularized Bone Scaffolds

Dr. Angel Bello Rivera at Periodontal Associates

Dr. Angel Bello Rivera

Dr. Bello brings a diverse cultural and professional background to our practice. He earned his DMD degree with clinical excellence awards from the University of Puerto Rico before furthering his dental training. Completing a two-year hospital-based General Practice Residency at Montefiore Medical Center, he focused on periodontics, oral surgery, and gained certification in IV moderate sedation, particularly working with special needs communities. Dr. Bello then pursued specialty periodontics training at Oregon Health and Science University, earning a specialty certificate and master's degree. Dr. Bello is Board certified in Periodontics & Implantology. Fluent in both English and Spanish, he offers a wide array of periodontal treatments, including surgical and laser-assisted procedures.

Dr. McAllister at Periodontal Associates

Dr. Bradley S. McAllister

Since 1993 Dr. McAllister has practiced the specialty of Periodontics in the Portland area. He is both a board-certified diplomate of the American Board of Periodontology and of the International Congress of Oral Implantology. Dr. McAllister has been active in treating the periodontal diseases with an emphasis on dental implant placement. He has over twenty years of experience in the surgical placement of dental implants and bone reconstruction. Prior to starting his own practice in Tigard, Dr. McAllister was a full time faculty member at the Oregon Health Sciences University. He was the director of the dental implant program for the residents and performed research related to implantology. He is currently a part time faculty member at the Oregon Health Sciences University.

Click here to read more about Dr. McAllister

Prior to his return to the Northwest, Dr. McAllister practiced in San Antonio Texas while completing his Ph.D. degree. His research centered on techniques to improve surgical wound healing. He completed his residency in Periodontics in 1992 at the University of Texas Health Science Center at San Antonio after obtaining his D.D.S. in 1988 at the University of Washington.

For over the past twenty-five years, Dr. McAllister has lectured on implantology and periodontics to local, national and international audiences. He has published numerous articles in professional journals. He is a member of several professional organizations (Academy of Osseointegration, American Academy of Periodontology, Oregon Society of Periodontists and the International Congress of Oral Implantology). Dr. McAllister practices in the Tualatin and Beaverton areas and limits his practice to periodontics and oral implantology.
Periodontal Associates in Beaverton, OR

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Meet the Doctors | Periodontal Associates | Beaverton, OR
At Periodontal Associates, we are board-certified periodontists serving the greater Portland area! We welcome you and the opportunity to care for your dental needs!
Periodontal Associates, 17895 NW Evergreen Pkwy #150 Beaverton, OR 97006 ^ (971) 317-8414 ^ ^ 5/29/2024 ^ Page Terms:dental implants Beaverton OR ^