Key Takeaways
For foreign residents and expat patients, two practical points matter most. Language support varies by clinic and is not documented in the source data for any of the five practices below, so an English-speaking dentist or coordinator must be confirmed by phone or on the clinic's booking page before you visit. Booking is normally by phone, and it helps to bring your passport or alien registration card, details of any insurance you hold, and any previous dental records or X-rays.
If you are looking for a clinic for cavity treatment in Seongbuk-gu, the review counts and locations in the source data point first to 처음처럼치과의원 (Cheoeumcheoreom Dental Clinic) and 성신웰치과의원 (Seongsin Well Dental Clinic). 처음처럼치과의원 has a Kakao Map rating of 4.3, with 210 Naver reviews and 1,136 Kakao Map reviews. 성신웰치과의원 also has a Kakao Map rating of 4.3, with 615 Naver reviews and 750 Kakao Map reviews. Ratings and review counts do not guarantee treatment outcomes, however, and the treatment plan and cost that suit your own teeth have to be discussed directly with the clinic.
Distance from the subway station, opening hours, and the way explanations are described in reviews all help you set your own criteria. The average Kakao Map rating across the five selected clinics is 4.1, based on the summary of the collected data. Some platforms' ratings and some addresses were not available in the source and need to be confirmed.
How We Compared
We collected 2,125 Naver Place visitor reviews and 2,999 Kakao Map reviews, along with registration data from the Health Insurance Review and Assessment Service (HIRA). For each clinic we organized the Naver, Kakao Map, and Google ratings provided, the review counts on each platform, blog review counts, and information on location, hours, and amenities. "Total reviews" in the table is the sum of the counts listed on Naver, blogs, Kakao Map, and Google; overlaps between platforms were not verified. Quotes are drawn from some of the actual visitor reviews provided, with emojis and special characters removed during editing. The number of dental specialists was not confirmed in the HIRA data for any of the five clinics.
열린치과의원 (Yeollin Dental Clinic)
The Kakao Map rating is 3.9, with 266 Naver reviews, 108 blog reviews, 64 Kakao Map reviews, and 2 Google reviews provided. The number of dental specialists could not be confirmed in the HIRA registration data, so if specialist care matters to you, it is more accurate to ask the clinic directly. Reviews describe staff and the director being kind, explaining treatment beforehand, and checking things thoroughly. These are individual experiences and cannot be assumed to apply to every visit.
"The director explains things carefully and is kind, which I really liked." (Naver review, October 17, 2026)
"They carefully explained why my gums hurt and how to look after them, and even checked other areas I hadn't mentioned — that's why I come to this clinic." (Naver review, September 18, 2026)
The address is 서울 성북구 정릉로 306 2층 (2nd floor, 306 Jeongneung-ro, Seongbuk-gu, Seoul), 379 m from Exit 1 of Jeongneung Station on the Ui-Sinseol Line. Hours are listed as 09:00–18:00 Monday, Tuesday, Thursday, and Friday; 09:00–13:00 on Wednesday; and 09:00–14:00 on Saturday. No evening hours appear in the provided schedule and lunch hours are not listed separately, so check before you visit.
Booking, separate men's and women's restrooms, Wi-Fi, and parking are listed as amenities. Some reviews mention visiting without a reservation, but that is not a guarantee of same-day treatment, so calling ahead is better. The phone number is 0507-1340-7522. If you suspect a cavity, describe your pain or sensitivity and when it started, then ask about the treatment options and costs that follow from the diagnosis. The cost references given are 10,000–30,000 KRW (covered) for amalgam and glass ionomer, and 80,000–150,000 KRW (non-covered) for adult resin, though your actual out-of-pocket cost requires a consultation.
처음처럼치과의원 (Cheoeumcheoreom Dental Clinic)
The Kakao Map rating is 4.3 and the Google rating is 5, with 210 Naver reviews, 2,984 blog reviews, and 1,136 Kakao Map reviews confirmed. The Google review count is listed as 0, so the Google rating of 5 should be read together with that review count. The number of dental specialists was not confirmed in the HIRA data. Reviews mention kind staff, clear explanations of treatment, and the use of photos to explain the condition of the mouth. Review assessments are individual opinions and do not substitute for judging treatment effectiveness or appropriateness.
"The director explained everything in so much detail, which was great. He took photos of my teeth with a camera and explained them, so I learned about problems I hadn't known about." (Naver review, September 14, 2026)
"The director does his best and explains things well." (Naver review, September 1, 2026)
The address is 서울 성북구 동소문로 98 5층 504호 (504, 5th floor, 98 Dongsomun-ro, Seongbuk-gu, Seoul), listed as 26 m from Exit 3 of Sungshin Women's University Station on the Ui-Sinseol Line. Hours are 09:30–18:30 Monday, Tuesday, Thursday, and Friday; 09:30–20:30 on Wednesday; and 09:30–13:30 on Saturday. Wednesday evening hours are listed, but the last check-in time and lunch hours are not in the source, so you will need to ask.
Booking, separate restrooms, simple payment, and parking are the amenities provided. The phone number is 02-942-2875, and a website and blog are also listed. Confirm how to book and whether parking is available, and on what terms, before your visit. Reviews mention being seen right after booking, but waiting times vary by date and situation. For a cavity consultation, it is practical to look at the photos or explanation to understand where the problem is and whether treatment is needed, and to ask why a particular option — resin, inlay, or crown — was suggested and what it costs. According to the source, adult resin is 80,000–150,000 KRW (non-covered), inlays are 250,000–500,000 KRW, and crowns are 350,000–800,000 KRW depending on material.
서울온치과의원 (Seoul On Dental Clinic)
The Kakao Map rating is 3.9, with 319 Naver reviews, 137 blog reviews, 8 Kakao Map reviews, and 1 Google review provided. Naver reviews include short notes about thorough checks and kind staff. The number of dental specialists was not confirmed in the HIRA registration data. The address field lists only the clinic name, so the exact street address and transport access cannot be confirmed from this material alone. Ask the clinic for the address and building location before visiting.
"They checked everything thoroughly." (Naver review, February 3, 2026)
"The doctor and the nurses are kind." (Naver review, January 8, 2026)
Hours are 09:30–18:30 Monday, Wednesday, Thursday, and Friday; 09:30–21:00 on Tuesday; and 09:30–14:00 on Saturday. Tuesday evening hours are listed, but the last check-in time and lunch hours are not in the source. The phone number is 0507-1430-2884, and a blog address is provided. Amenities such as booking and parking are also unconfirmed, so call before visiting to ask about booking, parking, and the address.
One review also says there was "no overtreatment," but a single review cannot be read as a definitive assessment of a clinic's care overall. When asking about cavity treatment, request an explanation of your current symptoms, the tests needed, and what would happen if the tooth were not treated, and ask for costs broken down by treatment method. Cost references given are 10,000–30,000 KRW (covered) for amalgam and glass ionomer, about 20,000–50,000 KRW (covered) for resin in permanent teeth of children aged 12 and under, and 80,000–150,000 KRW (non-covered) for adult resin. Whether these apply in your case must be confirmed with the clinic.
유디치과의원 성신여대 (Yudi Dental Clinic, Sungshin Women's University)
715 Naver reviews, 3,046 blog reviews, 1,041 Kakao Map reviews, and 0 Google reviews were provided. The Google rating is listed as 5, but the Google review count is 0. The Kakao Map rating is not in the source, so it cannot be compared. The number of dental specialists was not confirmed in the HIRA registration data. The reviews provided mention kind service, scaling experiences, cavity treatment experiences, and being advised only on the treatment that was actually needed. These are individual experiences of visitors.
"I had a cavity treated and it didn't hurt and was over really fast. Thank you." (Naver review, October 31, 2026)
"They did my scaling neatly and were very kind from booking through treatment. I also liked that they only recommended what was actually needed." (Naver review, November 2, 2026)
The address is 서울 성북구 아리랑로 9 산맥프라자 8층 (8th floor, Sanmaek Plaza, 9 Arirang-ro, Seongbuk-gu, Seoul), 93 m from Exit 5 of Sungshin Women's University Station on the Ui-Sinseol Line. Hours are listed as 09:30–18:30 Monday to Friday and 09:30–14:30 on Saturday. The provided schedule has no evening hours and no lunch hours are listed, so check before visiting. The phone number is 02-922-5432.
Booking and parking are listed as amenities. It is best to confirm parking conditions and how to book by phone. If you are considering cavity treatment, ask separately about which tooth will be treated, the treatment method, whether it is covered or non-covered, and the expected cost. The costs given in the source are 10,000–30,000 KRW (covered) for amalgam and glass ionomer, about 20,000–50,000 KRW (covered) for resin in permanent teeth of children aged 12 and under, 80,000–150,000 KRW (non-covered) for adult resin, 250,000–500,000 KRW for inlays, and 350,000–800,000 KRW for crowns. Actual amounts depend on the diagnosis and the materials used and must be confirmed.
성신웰치과의원 (Seongsin Well Dental Clinic)
The Kakao Map rating is 4.3, with 615 Naver reviews, 3,405 blog reviews, 750 Kakao Map reviews, and 0 Google reviews provided. With 615 reviews on Naver and 750 on Kakao Map, you can sample visitor opinion, but review counts alone cannot determine the outcome or suitability of cavity treatment. The number of dental specialists was not confirmed in the HIRA registration data. The reviews provided include individual experiences of calm treatment, kind staff, and little pain.
"I was reluctant to go to the dentist as I got older, but the director here looked at me calmly and put my mind at ease." (Naver review, November 5, 2026)
"They treated me without pain. I recommend it." (Naver review, November 5, 2026)
The address is 서울 성북구 동소문로 118 플라망스타워 3층 (3rd floor, Flamang Star Tower, 118 Dongsomun-ro, Seongbuk-gu, Seoul), 155 m from Exit 1 of Sungshin Women's University Station on the Ui-Sinseol Line. Hours are 10:00–18:30 Monday, Wednesday, Thursday, and Friday; 10:00–20:30 on Tuesday; and 10:00–14:00 on Saturday. Tuesday evening hours are listed, and lunch hours and the last check-in time are not in the source, so ask before visiting.
Booking, separate restrooms, Wi-Fi, and parking are listed as amenities. The phone number is 0507-1332-2876. Confirming parking conditions and how to book in advance will help you prepare. In a cavity consultation, ask which option — resin, inlay, or crown — is being suggested for the condition of your tooth, and on what basis. The reference ranges provided are 80,000–150,000 KRW (non-covered) for adult resin, 250,000–500,000 KRW for inlays, and 350,000–800,000 KRW for crowns depending on material; these do not represent the actual cost at any specific clinic.
At a Glance
Naver ratings were not provided in the collected data, so all are shown as "Not available." Review counts are the sum of the numbers listed on Naver, blogs, Kakao Map, and Google. Platform ratings are given only where a value was provided, and where a platform's review count is listed as 0, the rating is shown alongside that count.
| Clinic | Naver rating | Kakao rating | Google rating | Total reviews | Dental specialists | Location | Strengths (based on provided reviews and data) |
|---|---|---|---|---|---|---|---|
| 열린치과의원 (Yeollin Dental Clinic) | Not available | 3.9 | Not available | 440 | Not available | 379 m from Jeongneung Station Exit 1 | Booking and parking listed; reviews mention explanations and kindness |
| 처음처럼치과의원 (Cheoeumcheoreom Dental Clinic) | Not available | 4.3 | 5 (0 reviews) | 4,330 | Not available | 26 m from Sungshin Women's University Station Exit 3 | Open until 20:30 Wednesday; reviews mention detailed explanations |
| 서울온치과의원 (Seoul On Dental Clinic) | Not available | 3.9 | Not available | 465 | Not available | Address and access details not available | Open until 21:00 Tuesday; reviews mention thorough checks |
| 유디치과의원 성신여대 (Yudi Dental Clinic, Sungshin Women's University) | Not available | Not available | 5 (0 reviews) | 4,802 | Not available | 93 m from Sungshin Women's University Station Exit 5 | Reviews mention cavity treatment and scaling experiences |
| 성신웰치과의원 (Seongsin Well Dental Clinic) | Not available | 4.3 | Not available | 4,770 | Not available | 155 m from Sungshin Women's University Station Exit 1 | Open until 20:30 Tuesday; booking and parking listed |
Checklist for Choosing a Cavity Clinic
- Basis for the diagnosis — Check whether the clinic explains where the cavity is, how large it is, and what the test results show in a way you can understand.
- Treatment options — Ask what treatment is being proposed, whether other options exist, and the reason for each one.
- Scope of treatment — Confirm which teeth will be treated at each visit, how many visits are needed, and the expected schedule.
- Cost breakdown — Ask separately about covered versus non-covered items, costs by material, and anything that could add to the bill.
- Resin eligibility — Check separately whether coverage applies to permanent teeth in children aged 12 and under, and what adults pay as non-covered patients.
- Specialist information — The number of dental specialists was not confirmed in the published data, so contact the clinic directly if this matters to you.
- Booking and check-in — Confirm whether a reservation is required, whether same-day walk-ins are possible, and the last check-in time.
- Opening hours — Check not only evening and Saturday hours but also lunch breaks and holiday hours.
- Parking and transport — Check whether parking is available and on what terms, plus how far the clinic is from the station and how to get there.
- Explanation and consent — See whether you are given the plan and cost before treatment, with time to ask questions.
Warning Signs
The items below are not an assessment of any particular clinic; they are general points to watch for during a consultation.
- If the clinic wants to start treatment right away without explaining where the cavity is or why treatment is needed, ask again about the basis for the diagnosis and the scope of treatment.
- If you are not told the treatment method and cost, or coverage is hard to confirm, ask for an item-by-item explanation.
- If your questions go unanswered and you are pushed to decide before you fully understand and agree, ask for more explanation and take your time.
- Booking, parking, and hours may not match your actual plans, so call before visiting to confirm the latest information.
Frequently Asked Questions
Which clinics in Seongbuk-gu should I compare first for cavity treatment?
Based on the data provided, 처음처럼치과의원 and 성신웰치과의원 are the two candidates with review counts and ratings available. Each has a Kakao Map rating of 4.3; compare their Naver and Kakao Map review counts, locations, and opening hours as well. Reviews and ratings alone cannot tell you how treatment will turn out.
How much does cavity treatment cost?
The reference information provided lists 10,000–30,000 KRW (covered) for amalgam and glass ionomer, about 20,000–50,000 KRW (covered) for resin in permanent teeth of children aged 12 and under, and 80,000–150,000 KRW (non-covered) for adult resin. Inlays are 250,000–500,000 KRW and crowns 350,000–800,000 KRW depending on material. Actual costs and whether coverage applies must be confirmed with the clinic after a diagnosis.
Can I get treatment in English at a dental clinic in Seongbuk-gu?
The source data for all five clinics contains only Korean-language listings and phone numbers, and none of them state which languages the staff speak, so no English-speaking dentist can be confirmed from this material. Call the clinic or check its booking page and ask directly whether an English-speaking dentist or coordinator is available, and consider bringing a translation app or an interpreter to the consultation. If English-speaking support is essential to you, confirm it before you book rather than after you arrive.
Which clinics offer evening hours?
According to the schedules provided, 처음처럼치과의원 sees patients until 20:30 on Wednesday, 서울온치과의원 until 21:00 on Tuesday, and 성신웰치과의원 until 20:30 on Tuesday. Ask about the last check-in time and whether those hours apply on the day you plan to visit.
How can I find out how many dental specialists a clinic has?
In this data set, none of the five clinics had a dental specialist count confirmed through HIRA registration information. Missing information does not mean there are no specialists, so contact each clinic directly if that detail matters to you.
Does a clinic with many reviews provide better cavity treatment?
No. Review counts and ratings are only a reference for other patients' experiences and do not guarantee treatment outcomes or that a clinic suits you. Confirm the basis for the diagnosis, the treatment method, and the cost during a consultation, and decide based on your own situation.
Final Thoughts
When comparing clinics for cavity treatment in Seongbuk-gu, look beyond ratings and review counts to location, opening hours, booking and parking conditions, and how clearly the clinic explains the treatment plan and cost. In the data provided, 처음처럼치과의원 and 성신웰치과의원 both have a Kakao Map rating of 4.3; ask each clinic for its details and current opening conditions before you visit. This article is general information based on collected reviews and public data and does not replace diagnosis or treatment. Whether you have a cavity, and which treatment is appropriate, should be confirmed by a dentist.
Last updated: 2026-11-06