Isom Endodontics- Dr. Terry Isom
140, 6400, Southeast Lake Road, Portland, Oregon
Closed · Opens today at 8 AM
Root Canal Treatment on this Portland clinic's documented service list, with 1 services in total.

Compare Portland-area clinics on reviews, service fit, insurance, and booking convenience.
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Best overall
Isom Endodontics- Dr. Terry Isom
Best for Root Canal Treatment.
Tradeoff: Weekend availability is not highlighted
Highest review signal
Downtown Endodontic Group
The deepest documented patient-feedback history on this page across available portals.
Useful when social proof matters more than pure proximity.
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Quick Summary
4 clinics scored on this page
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Smyleee Ratings are editorial signals based on reviews, quality of care, and patient feedback. Close scores should be treated as broadly comparable.
Approximate price ranges — may vary by provider and insurance plan
Price ranges reflect typical Portland, Oregon pricing as of 2026. Actual costs vary by provider, complexity, and insurance coverage. Contact clinics directly for personalized quotes.
Prices verified Jul 15, 2026
What matters most to you?
Three decision buckets — pick the one that matches why you're booking.
Smyleee 59.9
A strong all-around pick if you want a reliable local choice for general dentistry.
75 reviews
Useful if you want the option with the deepest visible review signal before narrowing further.
Smyleee 50.7
A solid alternative if the first two aren't the right fit — ranks highly on the same page.
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140, 6400, Southeast Lake Road, Portland, Oregon
Closed · Opens today at 8 AM
Root Canal Treatment on this Portland clinic's documented service list, with 1 services in total.
511, Southwest 10th Avenue, Southwest Portland, Portland, Oregon
Closed · Opens today at 7:30 AM
Root Canal Treatment on this Portland clinic's documented service list, with 1 services in total.
310 SW 4th Ave Ste #100, Portland, OR 97204, USA, Portland, Oregon
Closed · Opens today at 8 AM
Portland clinic with a pediatric dentistry specialty — Root Canal Treatment is on file among 9 procedures.
<p>Timber Dental – Downtown Portland is at suite 100, 310 SW 4th Avenue in Portland's downtown core — on SW 4th between the city's financial district and the transit mall, accessible from the downtown MAX and TriMet bus network and within walking distance of Portland's central business district, Chinatown, and the Old Town neighbourhoods. Timber Dental was founded in Northeast Portland in 2014 and has expanded across Portland to locations in Bethany, East Burnside, and Downtown — the Downtown location on SW 4th Avenue serves the workday and residential population of inner Portland.</p> <p>As a multi-location Portland dental group with a defined brand identity, Timber Dental operates differently from single-location independent practices. The multi-site structure allows patients who live in one Portland neighbourhood and work in another to access care at whichever Timber Dental location is most convenient for a given appointment — a practical consideration in Portland's geographically distributed metropolitan footprint. The Downtown location on SW 4th serves the densest concentration of Portland's downtown worker population, who represent the most schedule-constrained segment of the city's dental demand.</p> <p>Emergency dentistry alongside root canal treatment and extractions provides the acute care capabilities most needed by Portland's downtown worker population — patients who experience dental emergencies during the workday and need a dental office within walking distance of their office. Children's dentistry makes the downtown location accessible for families in the downtown-adjacent residential communities. Invisalign for adult alignment correction addresses the demand of Portland's young urban professional demographic.</p> <p>Implants and crown and bridge restorations cover the restorative and prosthetic range. Teeth whitening handles the cosmetic requests of the downtown Portland patient demographic. General dentistry covers the preventive and maintenance scope.</p> <p>For downtown Portland, Old Town, and Pearl District patients on the SW 4th Avenue corridor who want a general dental practice with emergency dentistry, Invisalign, and implants in the heart of Portland's downtown transit hub — with the multi-location Timber Dental network available across Portland — the suite 100 address at 310 SW 4th Avenue provides that combination.</p>
511 SW 10th Ave #1101, Portland, OR 97205, USA, Portland, Oregon
Closed · Opens today at 7 AM
Invisalign is the documented focus in Portland; Root Canal Treatment sits within 11 services on profile.
Root canal treatment and extractions cover the acute and surgical scope.
Hard signals for every root canal treatment provider on this list — no opinions, just verifiable data.
| # | Clinic | Smyleee | Wknd | Ins. | Fin. | Offers Root Canal Treatment | |
|---|---|---|---|---|---|---|---|
| 1 | Isom Endodontics- Dr. Terry Isom | 60 | 4.9★(446) | — | — | — | ✓ |
| 2 | Downtown Endodontic Group | 51 | 4.7★(75) | — | — | — | ✓ |
| 3 | Timber Dental - Downtown Portland | 51 | — | — | — | — | ✓ |
| 4 | PDX Center for Dentistry | 51 | — | — | — | — | ✓ |
Smyleee Rating bands: 90+ Outstanding · 84–89 Excellent · 71–83 Very Good · 61–70 Good · below 61 Rated.
6 additional providers ranked below the Top 10 using the same algorithm. Updated monthly.
| # | Clinic | City | Smyleee | Reviews | Action | |
|---|---|---|---|---|---|---|
| #11 | Endodontic Associates - Dr. Benjamin Nielsen and Andrew Broadsword | Portland | 48.7 | 4.7★ | 52 | View → |
| #12 | Northern Oregon Endodontics | Portland | 45.1 | 4.4★ | 39 | View → |
| #13 | Timber Dental East Burnside | Portland | 37.0 | — | — | View → |
| #14 | Terwilliger Dental | Portland | 34.2 | — | — | View → |
| #15 | Advantage Dental+ | Broadway | Portland | 34.2 | — | — | View → |
| #16 | Northwest Portland Dental | Portland | 34.2 | — | — | View → |
Use the ranking as a starting point, then narrow the shortlist based on the kind of care you actually need.
Prioritize review consistency, insurance friendliness, practical hours, and a broad general-dentistry service mix over marketing language alone.
Confirm same-day capacity, after-hours guidance, and whether the clinic handles urgent restorative work in-house or refers out.
Compare financing signals, insurance notes, and the local cost guide. A higher-ranked clinic is not automatically the best value for your specific treatment.
Root canal treatment in Portland benefits from OHSU School of Dentistry's endodontic graduate programme — the training clinic whose residents provide operating microscope-level endodontic care for eligible patients, and whose graduates establish the specialist endodontic practices that serve the Portland and broader Pacific Northwest referral community. The private AAE Diplomate endodontists in the Pearl District, Lake Oswego, and Washington County suburban corridor serve the commercially insured and private-pay referral patient whose molar anatomy complexity, missed canal, or retreatment presentation warrants the specialist operating microscope and CBCT pre-operative imaging that defines the technical difference between the specialist and general dentist endodontic scope. Oregon Health Plan's covered endodontic benefit for enrolled adults — anterior and premolar teeth at the OHP fee schedule — provides a funded access pathway for the OHP patient whose tooth eligibility meets the covered criteria at the OHP-participating endodontic practice or the OHSU endodontic training clinic.
Smyleee evaluated Portland root canal treatment providers on AAE Diplomate or OHSU endodontic residency training, operating microscope routine use, CBCT cone beam imaging for complex and retreatment cases, thermoplastic obturation technique, Oregon Health Plan billing for covered endodontic services, OHSU endodontic clinic network connectivity for cost-accessible referral, multilingual consultation for the patient communities whose first language is not English, and periapical healing outcome consistency at the twelve-month recall radiograph. These ten Portland practices are the root canal providers the data confirmed as most reliably delivering technically complete endodontic treatment to the full range of Greater Portland's geographically and demographically diverse patient community.
Medically reviewed by
Dr Maqsud Mallick — BDS
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