클래스원치과의원 (Class I Orthodontic Specialists)
According to our open methodology, this clinic scored 42.8/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #22 of 26 ranked clinics · Last checked: 6 September 2026
Positions by Rating Profile
- Overall Transparency & Trust#2242.8/100
- Best for Expats#1843.3/100
- Best for Dental Implantsnot ranked
- Best for Emergency Dental Carenot ranked
- Best Price Transparency#2232/100
- Best English-speaking Clinics#1249/100
- Best for Families / Children#1245/100
- Sleep Dentistry (GA / deep sedation)not ranked
General Anaesthesia & Deep Sedation
Whether the clinic documents treatment under general anaesthesia or deep / twilight sedation — "sleep dentistry", where the patient is asleep and unaware (does not feel, see, or hear the procedure). Ordinary conscious sedation, where the patient stays awake and responsive, does not count here. This is informational and does not affect the transparency score.
- ? General anaesthesia / deep sedation (sleep dentistry) — Not verified
Summary
Orthodontics-only practice by Daejeon City Hall station, open since 2008. Its director trained and practised orthodontics in the United States for a decade and holds American Board of Orthodontics certification; the clinic keeps an English section and states that it is an official provider of the TRICARE Dental Program.
Strengths
- Information Transparency: 20 of 20 points.
- No red flags identified in public sources.
Weaknesses
- Price Transparency: 0 of 3 verifiable points (missing: prices or price ranges published)
- Reputation & Reviews: 3 of 15 verifiable points (missing: google review volume; review recency; clinic responds to reviews; tripAdvisor presence; other review platforms)
- AI & Search Visibility: 1.5 of 10 verifiable points (missing: mentioned for: best dentist Korea; mentioned for: English speaking dentist Korea; mentioned for: dental implants Korea; mentioned for: emergency dentist Korea; mentioned for: Korea dental clinic for expats; structured data on website; google indexing quality)
Score Breakdown
Every criterion below is scored from public sources. ✓ verified yes · ✗ verified no / not found · ◐ partial · ? unverified (scores 0, not a negative finding).
Information Transparency
Whether basic facts about the clinic - its team, premises, services, and location - are publicly verifiable.
| ✓ | Has a working website [s1] | 4/4 |
| ✓ | Dentist names listed Director named on the clinic's own medical-team page as Kim Yong-eul (in Hangul) / Yong E. Kim, DDS, MS. [s2] | 3/3 |
| ✓ | Dentist specializations listed Orthodontic specialist: 3-year orthodontic residency, University of Oklahoma Health Science Center; diplomate, American Board of Orthodontics (2006); member, American Association of Orthodontists. [s2] | 2/2 |
| ✓ | Real clinic photos Dedicated clinic facilities page. [s1] | 2/2 |
| ✓ | Service list published Orthodontic appliance and malocclusion sections; the practice is single-discipline by design. [s1] | 3/3 |
| ✓ | Clear contact details Phone 042-482-9502~3 and the Dunsan-dong address on the site match the HIRA institution record. [s1] [reg1] | 2/2 |
| ✓ | English website version Dedicated English page covering the director's credentials, office hours, directions and how to make contact. [s3] | 2/2 |
| ✓ | Address and map published [s1] | 2/2 |
Price Transparency
Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.
| ✗ | Prices or price ranges published Neither the Korean nor the English pages publish orthodontic fees or ranges; the English page says a clinical coordinator explains financial options at the first visit. [s1] [s3] | 0/3 |
| ? | Cleaning price listed | 0/2 |
| ? | Filling price listed | 0/2 |
| ? | Crown price listed | 0/2 |
| ? | Implant price listed | 0/2 |
| ? | Consultation price listed | 0/2 |
| ? | X-ray / imaging price listed | 0/2 |
Reputation & Reviews
Public review signals. The Google rating is adjusted with a Bayesian prior (rating 4.0, weight 25) so a 5.0 from a handful of reviews does not outrank a 4.8 from hundreds.
| ◐ | Google rating (Bayesian-adjusted) Star histogram read live on 2026-09-06 from the place page: 3 five-star, 0 four-star, 0 three-star, 0 two-star, 1 one-star. The buckets sum to 4, matching the 4 in the place-page header exactly, and the weighted mean 4.000 reproduces the published 4. [gmp1] | 3/6 |
| ✗ | Google review volume Read live on 2026-09-06 from the place-page header; the star histogram sums to the same figure. [gmp1] | 0/3 |
| ✗ | Review recency Newest Google review is dated 2025-03-11 (listing read 2026-09-26). [class-one-dental-daejeon-gbp-2026-09-26] | 0/3 |
| ✗ | Clinic responds to reviews The Google listing is unclaimed (it offers "Claim this business"), so no owner replies to reviews (read 2026-09-26). [class-one-dental-daejeon-gbp-2026-09-26] | 0/2 |
| ? | No recurring complaints | 0/2 |
| ? | No suspicious review patterns | 0/2 |
| ? | Active Facebook presence Not established: the clinic's website (19 pages read 2026-10-02) links no Facebook page and none was found under its website or Instagram name; Facebook itself could not be searched that day. | 0/1 |
| ✗ | TripAdvisor presence No TripAdvisor listing found via its search for "Class I Orthodontic Specialists Daejeon" and "Class I Dental"; the clinic's site does not link to TripAdvisor (checked 2026-10-05). [class-one-dental-daejeon-tripadvisor] [class-one-dental-daejeon-tripadvisor-2] | 0/0.5 |
| ✗ | Other review platforms [reg1] | 0/0.5 |
Medical Infrastructure
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
| ✓ | On-site X-ray English page: orthodontic records including X-rays, models and photos are taken at the first visit. [s3] | 2/2 |
| ? | CBCT (3D imaging) | 0/2 |
| ✗ | Implantology Single-discipline orthodontic practice; no implant service is offered. [s1] | 0/2 |
| ✓ | Orthodontics [s1] | 2/2 |
| ✗ | Oral surgery No surgical service is offered. [s1] | 0/2 |
| ✓ | Pediatric dentistry English page addresses children's orthodontic treatment and early intervention. [s3] | 1.5/1.5 |
| ? | Emergency care | 0/1.5 |
| ✓ | Works with international patients Official provider of the TRICARE Dental Program, with an English contact route for U.S. patients. [s3] | 2/2 |
Communication & Service
How easy it is to contact the clinic, get answers, and book - especially for international patients.
| ✗ | WhatsApp / LINE available KakaoTalk channel only. [s1] | 0/2 |
| ? | Response speed | 0/1.5 |
| ✓ | English spoken [s3] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible Online consultation board plus an English contact form; the English page describes a preliminary orthodontic consultation. [s1] [s3] | 1.5/1.5 |
| ✓ | Clear service explanations Explanatory sections on orthodontic basics, appliances and the causes and treatment of malocclusion. [s1] | 1/1 |
| ✓ | Convenient opening hours Saturday clinic 08:40–15:00 published alongside weekday hours; closed Thursdays and Sundays. [s1] | 1.5/1.5 |
AI & Search Visibility
Whether the clinic is discoverable when patients search - including via AI assistants. Checked with fixed queries: "best dentist Korea", "English speaking dentist Korea", "dental implants Korea", "emergency dentist Korea", "Korea dental clinic for expats".
| ✗ | Mentioned for: best dentist Korea [sq1] | 0/1 |
| ✗ | Mentioned for: English speaking dentist Korea [sq1] | 0/1 |
| ✗ | Mentioned for: dental implants Korea [sq1] | 0/1 |
| ✗ | Mentioned for: emergency dentist Korea Web search 2026-09-06: not among results for "emergency dentist Daejeon" (named results were Sun Dental Hospital, DIER Dental Clinic, Daejeon St. Mary's Hospital). [sq2] | 0/1 |
| ✗ | Mentioned for: Korea dental clinic for expats Web search 2026-09-06: not among results for "Daejeon dental clinic for expats" (named results were DIER Dental Clinic and an unidentified renamed "Star White Dental Clinic" in Dunsan 2-dong, not attributable to any specific card). [sq3] | 0/1 |
| ✗ | Structured data on website No schema.org JSON-LD block in the page source. [s1] | 0/1.5 |
| ✗ | Google indexing quality own domain classonedental.co.kr appears only once, at position 6 of 7 (homepage), behind Korean dental-review aggregators and an unrelated competitor (daejeondentist.com) (web search 2026-09-07) [giq1] | 0/2 |
| ✓ | Dedicated service pages [s1] | 1.5/1.5 |
Licensing & Credentials
Whether the clinic publishes its operating licence and the dentists working there together with their professional licence numbers. A verified “not published” is recorded as a red flag; data we have not checked yet is shown as unverified and carries no penalty.
Clinic operating licence: HIRA national health-insurance provider code 34501711 — dental clinic, opened 2008-02-18; as listed in the live Health Insurance Review & Assessment Service institution finder on 2026-09-04. Business registration number 314-91-89498, published by the clinic in its own site footer. [reg1] [s1]
Dentists & professional licences
| Dentist | Specialization | Licence No. |
|---|---|---|
| 김용을 (Yong E. Kim, DDS, MS — Latin form published by the clinic on its own English page) [s2] [s3] | Orthodontist; diplomate, American Board of Orthodontics; dental boards of California, Oregon and Washington | not verified |
Dentists are named; their licence numbers have not been checked against public sources yet — unverified, no penalty.
Red Flags
No red flags identified in the public sources we reviewed.
Data We Could Not Verify
- Price Transparency: Cleaning price listed
- Price Transparency: Filling price listed
- Price Transparency: Crown price listed
- Price Transparency: Implant price listed
- Price Transparency: Consultation price listed
- Price Transparency: X-ray / imaging price listed
- Reputation & Reviews: No recurring complaints
- Reputation & Reviews: No suspicious review patterns
- Reputation & Reviews: Active Facebook presence
- Medical Infrastructure: CBCT (3D imaging)
- Medical Infrastructure: Emergency care
- Communication & Service: Response speed
Unverified items score 0 points but are not treated as negative findings. If you can document any of them, please send a correction.
Contact Information
| Website | http://www.classonedental.co.kr/ |
|---|---|
| Phone | +82-42-482-9502 |
| Google Maps | Map listing |
| Address | 대전광역시 서구 둔산중로 66, 2층 205호 (둔산동) / 2F, 66 Dunsanjung-ro, Seo-gu, Daejeon, South Korea |
Contact details are provided for identification only and may change; verify with the clinic directly.
Sources
| ID | Source | What it supports | Accessed |
|---|---|---|---|
| s1 | http://www.classonedental.co.kr/ | Clinic name, address, phone, opening hours, orthodontic information sections, business registration number, facilities page | 2026-09-04 |
| s2 | http://www.classonedental.co.kr/html/doctor1.php?Sub_No=A02 | Named director with credentials and training record | 2026-09-04 |
| s3 | http://www.classonedental.co.kr/html/english.php?Sub_No=F01 | English page: director credentials, TRICARE Dental Program provider status, office hours, directions, first-visit records | 2026-09-04 |
| reg1 | https://www.hira.or.kr/ra/hosp/getHealthMap.do?pgmid=HIRAA030002010000 | HIRA institution record: Class I Orthodontic Specialists, institution code 34501711, dental clinic, Daejeon, Seo-gu, Dunsanjung-ro 66, 042-482-9502, opened 2008-02-18, WGS84 coordinates | 2026-09-04 |
| sq1 | search:best dentist Daejeon / English speaking dentist Daejeon / dental implants Daejeon | AI/search visibility scout 2026-09-04 | 2026-09-04 |
| gmp1 | https://www.google.com/maps/place/%ED%81%B4%EB%9E%98%EC%8A%A4%EC%9B… | Live Google Maps place page read in a browser: rating, review count, star histogram, review dates, owner replies, listing website, phone, address and pin coordinates | 2026-09-06 |
| sq2 | search:emergency dentist Daejeon | AI/search visibility scout — canonical query | 2026-09-06 |
| sq3 | search:Daejeon dental clinic for expats | AI/search visibility scout — canonical query | 2026-09-06 |
| giq1 | search:클래스원치과의원 대전 Class One Dental Clinic Daejeon | own domain classonedental.co.kr appears only once, at position 6 of 7 (homepage), behind Korean dental-review aggregators and an unrelated competitor (daejeondentist.com) | 2026-09-07 |
| class-one-dental-daejeon-gbp-2026-09-26 | https://www.google.com/maps?cid=4543566076801332808&hl=en | Google listing read on 2026-09-26: rating 4 from 4 reviews; star histogram 1★ 1 / 2★ 0 / 3★ 0 / 4★ 0 / 5★ 3; newest review dated 2025-03-11; the listing is unclaimed (it offers "Claim this business"). | 2026-09-26 |
| class-one-dental-daejeon-tripadvisor | https://www.tripadvisor.com/TypeAheadJson?action=API&details=true&q… | TripAdvisor's own search, read 2026-10-05: 12 suggestions for "Class I Orthodontic Specialists Daejeon" (1 place, 4 attractions, 6 hotels, 1 restaurant), none of them a dental practice in or near Daejeon; 12 suggestions for "Class I Dental" (1 place, 4 attractions, 6 hotels, 1 restaurant), none of them a dental practice in or near Daejeon; no listing for this clinic | 2026-10-05 |
| class-one-dental-daejeon-tripadvisor-2 | http://www.classonedental.co.kr/ | Clinic's website, home page read 2026-10-05: no link to a TripAdvisor page | 2026-10-05 |
Change History
| Date | Change |
|---|---|
| 2026-10-05 | TripAdvisor presence checked on 2026-10-05: no listing found for this clinic. |
| 2026-09-29 | Corrected 2026-09-29: no recurring complaints and no suspicious review patterns now unverified: 4 Google reviews are too few to show a pattern; active Facebook presence now unverified: no Facebook search is on record, so the absence of a page is not established; review recency older than a year (newest review dated 2025-03-11); no owner replies to reviews: the Google listing is unclaimed. |
| 2026-09-06 | Checked by hand in a browser: the Google Maps place page was opened in a real browser and read for rating, review count, star histogram, review recency, owner replies, complaint and manipulation reading, listing website, phone, address and pin coordinates; the checks that needed a rendering browser were worked through on the clinic's own channels. |
| 2026-09-04 | Initial data collection for the Korea Dental Transparency & Trust Index: verified via classonedental.co.kr (Korean and English pages) and the HIRA national institution register. |
A question or a correction?
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