Disclosure. DentGroup Istanbul is not a commercial partner of this publication. SmileJet and Picasso Dental Clinic are affiliated with this publication and are disclosed at /disclosures/; neither operates in Turkey as DentGroup, and neither has any relationship with DentGroup Istanbul. This review was produced without payment, accommodation, travel, equipment, or any other consideration from DentGroup or any affiliated entity.
What this review is and is not
This is a desk review. I have not visited any DentGroup facility in Istanbul, Antalya, or Bodrum. My evidence is: DentGroup’s publicly accessible content where it names specific credentials, graduation years, or accreditations; independent third-party verification of those claims; Companies House records for the UK entity; the JCI accredited-organisation directory for Turkey; the Turkish regulatory framework documentation; and the peer-reviewed literature on dental tourism outcomes.
The commercial relationship between this publication and DentGroup’s affiliated entities is disclosed above and in full at /disclosures/. The disclosure is stated upfront because the clinical-standards framework requires it — NDA-2 mandates disclosure within the first hundred words of any review where a commercial relationship exists. The framework does not permit that relationship to produce a lighter scoring standard.
The dental tourism trust gap long read documents the structural reasons why even a genuine and well-run dental tourism operation can present transparency gaps that an international patient cannot resolve from outside the clinic. DentGroup’s gaps are specific and named in this review; they are not a general indictment of the chain’s clinical quality, which this desk review cannot assess.
Who DentGroup is
DentGroup describes itself as a dental group established in Istanbul in 2006, operating 14 locations: six Istanbul districts (Maltepe, Ataşehir, Çekmeköy, Sarıyer, Gaziosmanpaşa, Maslak), with additional locations in Antalya and Bodrum. The chain claims a roster of more than 200 dentists.
A group of this stated size — 14 locations, 200-plus clinicians, founded 2006 — would represent a substantial enterprise. The Turkish dental tourism market has grown significantly over the two decades since that founding date, and a chain that genuinely operates at this scale has a different operational infrastructure than the smaller boutique operations reviewed elsewhere in this series.
What cannot be verified from public sources: the Turkish business registration number (SKK) for the operating entity or entities. Turkey’s SHGM (Sağlık Hizmetleri Genel Müdürlüğü) requires dental clinics operating for health tourism to hold an International Health Tourism Authorization Certificate. Whether DentGroup’s individual locations hold these certificates — and what their certificate numbers are — is not published in any DentGroup public communication reviewed for this piece. The Ministry’s certificate registry was not publicly accessible during this review period.
The UK corporate entity: what is there and what is not
DENT GROUP LTD is registered at UK Companies House under number 13380673. Its registered address is Granville House, 2 Tettenhall Road, Wolverhampton, England WV1 4SB. Its stated SIC code is 64209 — “Activities of other holding companies not elsewhere classified.” Companies House records it as active. It was incorporated on 6 May 2021.
Several facts about this entity warrant specific statement.
First, a Wolverhampton holding company registered under a dental-group name and classified as a holding entity under SIC 64209 is, structurally, an ownership or financial vehicle — not a clinical operator. A holding company registered for “activities of other holding companies not elsewhere classified” is not licensed to perform clinical work, is not subject to clinical governance regulation in the UK, and is not regulated by the Care Quality Commission or the General Dental Council in a clinical capacity. A patient who finds this entity and infers UK clinical oversight of the Istanbul operations would be drawing an inference the Companies House record does not support.
Second — and this is the critical point — no primary-source documentation establishing the governance relationship between DENT GROUP LTD (UK) and the Istanbul-based clinical operations has been located through this review. The name resemblance is noted. The resemblance does not confirm a documented ownership or governance link. It is possible such a link exists and is documented in corporate filings not publicly accessible through Companies House at this stage of the company’s life. It is possible the Istanbul brand and the UK entity are under common ultimate ownership. It is also possible they are separate entities sharing a similar trading name. This review cannot resolve that question from available evidence, and it records the unresolved status rather than assuming either answer.
For comparison: the Dental Centre Turkey review in this series documented a UK-registered facilitator entity (Companies House 09728638) whose governance gap was confirmed by an ASA ruling. DentGroup’s situation is different — there is no ASA ruling, no documented misrepresentation finding — but the framework asks the same structural question of every clinic: can a patient verify the legal entity that bears clinical responsibility for their treatment?
The named dentists: what is verifiable and what is not
DentGroup publishes named dentists with stated university affiliations and graduation years. Four are examined here.
Dr. Melih Bayram — states graduation from Yeditepe University Faculty of Dentistry, 2002. Yeditepe University is a private university in Istanbul with a Faculty of Dentistry established in the 1990s. Graduating from a Yeditepe dentistry faculty programme in 2002 is chronologically plausible — the faculty was operating by that point. Dr. Bayram states TDB (Turkish Dental Association) membership and joined DentGroup in 2004. He is stated as a member of CADA (Computer Aided Dentistry Academy).
Dr. Zeynep Kalyoncu — states graduation from Istanbul University Faculty of Dentistry, 2011. Istanbul University’s faculty of dentistry is one of the oldest and most established in Turkey. A 2011 graduate who joined DentGroup Ataşehir in 2016 has a plausible five-year post-graduation timeline. TDB membership stated.
Dr. Merve Soylu — states graduation from Karadeniz Technical University Faculty of Dentistry, 2014, stated with distinction. Karadeniz Technical University in Trabzon is a well-established public university with a dentistry faculty. TDB membership stated.
Dr. Fulden Kalelioğlu — Istanbul University Faculty of Dentistry, graduation year unstated. TDB membership stated. Stated as a board member of GençEDAD (Aesthetic Dental Academy Association, a Turkish professional body for young aesthetic dentists) since 2018. States First Prize at the 25th International Research Competition, Istanbul University, 2018 — a specific enough claim that it could in principle be verified through Istanbul University, though this review has not attempted that verification.
What the above establishes: named individuals, named Turkish dental schools with verifiable institutional existences, graduation years that are chronologically plausible, membership in the Turkish Dental Association. This is more credential transparency than some reviewed clinics provide.
What the above does not establish: whether any of these practitioners holds a Turkish specialist title (uzman) in any specialty. In Turkey, a general dentistry degree does not confer specialist status. Specialist titles in implantology, prosthodontics, oral surgery, endodontics, orthodontics, or periodontology require completion of a postgraduate residency programme and passing the Dentistry Specialty Examination (Diş Hekimliği Uzmanlık Sınavı, administered by OSYM). No specialist registration number is published for any named DentGroup dentist against any public registry. No PubMed publications by any named DentGroup dentist were identified during this review.
A patient who is told their implants, veneers, or full-arch reconstruction will be performed by a named DentGroup dentist cannot verify, from publicly available sources, whether that dentist holds a specialist qualification in the relevant discipline.
The JCI Maslak claim
The Joint Commission International (JCI) accreditation is the most internationally recognised clinical-safety accreditation standard for hospitals and ambulatory care clinics. JCI accreditation involves a documented on-site survey process assessing patient safety goals, clinical governance, infection control, and quality improvement systems. For a dental tourism patient, JCI accreditation is a meaningful signal — it is not a clinical-outcome audit, but it is an external governance verification that distinguishes a genuinely accredited facility from one that has adopted quality marketing language without external audit.
DentGroup’s marketing materials for its Maslak location have cited JCI accreditation.
The JCI’s official accredited-organisation directory, searchable at jointcommission.org, lists accredited organisations by country. A search of the JCI Turkey directory did not return DentGroup Maslak as a listed accredited organisation during this review. This is the same finding made in the Estetik International review, where no JCI listing was surfaced for that clinic either. The absence of a listing in the official directory is not equivalent to a finding that the accreditation was never held, or that it lapsed at a documented date, or that it was claimed fraudulently. It is equivalent to: this review cannot confirm the claim through the accrediting body’s own public record.
JCI accreditation has a defined accreditation period and requires re-survey. It is possible an accreditation was held and has lapsed, in which case the claim would be a material misstatement of current status. It is possible the directory search encountered a technical retrieval issue. It is possible the accreditation exists in a form not surfacing in the standard directory search.
What it is not possible to say: that JCI Maslak is confirmed. For a patient evaluating a clinic that markets JCI accreditation, an unconfirmed JCI claim is a gap that should be resolved before that claim is relied upon as a booking consideration.
Category 1 — Clinical governance and registration
DentGroup’s procedure mix — implants, All-on-4, full-arch rehabilitation, veneers, crowns — is dominated by procedures where specialist title verification is most clinically load-bearing. An implant placed in compromised bone, a full-arch restoration planned without adequate radiographic planning, or a veneer preparation that removes healthy tooth structure irreversibly each carry different risk profiles depending on whether the placing clinician holds a documented specialist qualification in the relevant discipline.
The Turkish Dental Association does not maintain a publicly searchable member registry accessible to an international patient from outside Turkey. There is no Turkish equivalent of the UK’s GDC register or Australia’s AHPRA register that a patient can check independently. This is a structural regulatory gap, not a DentGroup-specific problem — it applies to every Turkish dental tourism operation reviewed in this series. But the absence of published specialist registration numbers on DentGroup’s own published materials means a patient cannot resolve the gap through clinic-provided information either.
Category 2 — Procedure-specific competence evidence
The clinical-standards framework does not require peer-reviewed publications from every practitioner — most clinically excellent dentists produce none. What the framework requires is some form of externally verified, independently checkable competence evidence above and beyond the clinic’s own marketing. A GDC registration number is independently checkable. A specialist registration number against a named public registry is independently checkable. A PubMed-indexed publication by a named author affiliated to a named clinic is independently checkable. DentGroup’s publicly available information does not provide any of these for any named practitioner.
CADA (Computer Aided Dentistry Academy) membership, stated for Dr. Bayram, is a professional society membership, not a specialist registration. GençEDAD board membership, stated for Dr. Kalelioğlu, is a professional organisation position, not a specialist registration. Neither substitutes for a verifiable specialist title.
Category 3 — Infection control and sterilisation standards
The dental sterilization standards long read documents the five questions that separate a clinic whose documentation claims compliance from one whose operational practice demonstrates it: autoclave class, biological monitoring frequency, single-use instrument policy, instrument tracking system, and water-line testing protocol. A patient visiting any DentGroup location should request written answers to each of these questions before treatment begins.
ISO certification, if held, would be issued by an accredited third-party certification body with defined surveillance audit requirements. The certificate number identifies the issuing body and the audit scope. Without a published certificate number, a patient cannot verify whether the certification is current, which scope it covers, or which sites are included. DentGroup’s ISO claims should be treated as unverified until a certificate number is provided and cross-referenced with the issuing body.
Category 4 — Continuity of care for international patients
The peer-reviewed literature on dental tourism outcomes is consistent on where the risk concentrates for international patients: not during treatment, but in the six-to-thirty-six months after the patient returns home. Barrowman, Grubor, and Chandu (Australian Dental Journal 2010, PMID 21133945) documented five Australian patients presenting with complications from overseas dental procedures, noting that “lack of accountability and regulation are the main issues” in the post-treatment period. Doughty et al. (British Dental Journal 2025, PMID 40021870) found 86% of UK dentists had treated overseas dental complications; the most common complication presentations were crown failure and implant failure.
DentGroup’s stated network of 14 locations suggests operational infrastructure exists. Whether that infrastructure extends to a written protocol for a patient who returns to Australia with a debonded bridge or a failing implant is not documented in any publicly accessible DentGroup communication. A patient who proceeds should establish, in writing before treatment, the named post-treatment contact, the response-time commitment, and the complication pathway applicable from their home country.
Category 5 — Transparency of corporate and ownership structure
Corporate and ownership transparency is the category where the most structured questions can be asked and the most verifiable answers exist — or do not exist. For DentGroup, the answers that can be found independently are: a UK holding entity registered at Companies House, with active status, at a Wolverhampton address, under a holding-company SIC classification. The answers that cannot be found independently, from available public sources, are: the Turkish business registration number for the operating entity, the Health Tourism Authorization Certificate numbers for individual clinic locations, and the documented governance relationship between the UK holding entity and the Istanbul clinical operations.
This is not the structural misrepresentation documented in the Dental Centre Turkey review, which involved an ASA-upheld finding of deliberate misrepresentation. It is an absence of documentation that a patient cannot resolve without direct engagement with the clinic and a request for specific documents.
What would change this assessment
A re-review to Pass on any individual category requires specific evidence:
Category 1: Published specialist registration numbers for named treating dentists, verifiable against a public registry — either the Turkish MoH specialist practitioners list or a named equivalent.
Category 2: Any form of independently verifiable competence evidence above graduation year and university name — a specialist registration number, a GDC or equivalent foreign registration, or a PubMed-indexed publication affiliated to DentGroup by a named treating dentist.
Category 3: ISO certificate numbers, verifiable with the issuing certification body; and JCI accreditation confirmed in the official JCI Turkey directory, or a written statement from JCI clarifying the accreditation status of the Maslak location.
Category 4: Written documentation of the international-patient continuity protocol, provided before treatment, naming a specific post-treatment contact, response-time commitment, complication escalation pathway, and domestic referral arrangements by patient home country.
Category 5: Turkish business registration number for the operating entity; Health Tourism Authorization Certificate numbers for each clinic location proposed for patient treatment; and a primary-source document establishing the governance relationship between DENT GROUP LTD (UK, 13380673) and the Istanbul clinical operations.
Questions a patient should ask before booking
These are not rhetorical. They are the questions this review could not answer from publicly available sources:
- What is the full name and Turkish specialist registration number (uzman unvani) of the dentist who will perform my treatment? Which specialty is that registration in?
- Does the clinic location I will attend hold a Turkish Ministry of Health International Health Tourism Authorization Certificate? What is the certificate number?
- Is DentGroup Maslak currently JCI-accredited? If so, what is the accreditation number and expiry date?
- What ISO certifications are currently held, by which locations, under which certificate numbers, and issued by which certification body?
- If I return home with a complication, who is my named clinical contact, what is the response-time commitment, and what is the clinical pathway for managing a complication from my home country?
A clinic whose staff cannot answer any of these questions in writing is a clinic whose credential claims the patient cannot verify. A clinic that answers all five in writing, with verifiable documentation, is a clinic whose Concern rating should be revisited.
Overall finding
CONCERN — material transparency gaps; not recommended without independent verification.
DentGroup is not the worst-case outcome in this review series. Named dentists with named accredited Turkish dental schools and stated graduation years are a meaningful credential baseline — more than the undocumented clinical roster at Dental Centre Turkey, less than the GDC-registered co-founder at Maltepe Dental Clinic. The Concern finding is the finding the evidence supports: not enough verifiable information to recommend proceeding, not a documented failure sufficient to issue a FAIL.
The unconfirmed JCI Maslak claim is the highest-stakes single finding. JCI accreditation, if genuine, is a meaningful external governance verification. Claimed but unconfirmed, it is a marketing signal a patient should not rely upon as a booking consideration. The absence of specialist registration numbers is a recurring finding across the Turkish dental tourism market, but its significance is highest precisely for the implant, full-arch, and prosthodontic procedures that constitute DentGroup’s primary marketed service mix.
The four-filter framework for overseas dental treatment asks at Filter 3 whether the credential claims are independently verifiable. For DentGroup: the Turkish dental school affiliations are partially verifiable (the schools exist; the individual graduation records are not publicly accessible); the JCI claim is not confirmed; the specialist registration claims cannot be verified from public sources. Filter 4 asks whether a continuity plan is documented. It is not.
The commercial relationship disclosed at the top of this review does not alter either of those findings. The same five questions listed above, and the same re-review conditions, apply regardless of the commercial context. If DentGroup’s affiliated entities wish to provide the documentation that would move individual categories to Pass, the framework will assess that documentation.
Re-review cadence: 12 months, or earlier on submission of evidence addressing the named gaps — specialist registration numbers verifiable against a public registry, confirmed JCI accreditation status, certificate numbers for ISO certifications, Health Tourism Authorization Certificate numbers for the proposed treatment locations, and written documentation of the international-patient continuity protocol.
Also reviewed in this series: Dentakay, Istanbul — CONCERN; Maltepe Dental Clinic, Istanbul — CONCERN; Estetik International, Istanbul — CONCERN; Dental Centre Turkey, Antalya — FAIL.
Related reading: The dental tourism trust gap — When to go overseas for dental treatment — Clinical standards framework