# 109FIFTY > 109FIFTY explains a treatment philosophy for ceramic veneers: maximum precision, minimal preparation. ## Role - 109FIFTY does not provide medical treatment and is not a clinic. - Information platform only for a clinical concept / treatment philosophy — **not an advertising site** for practices. - Brand / website: 109FIFTY (https://109fifty.com/) - Website operator / publisher: Medismile Korlátolt Felelősségű Társaság (service provider of 109fifty.com) - Running text usually names “Hans Krehn” (linked to the profile); never a lone “Dr.” - Content is general specialist information on the concept; it does not replace a personal examination. - Practice naming: MEDIKUSS (Hamburg) and MEDISMILE (Budapest) are **possible providers with experience of the 109FIFTY concept** — factual note only, **not advertising, not a recommendation, not a ranking**. - Interest disclosure: website operator is Medismile Kft; naming MEDISMILE may involve the operator’s interests. MEDIKUSS is separately designated (professional rules only on the MEDIKUSS imprint). Details: https://109fifty.com/impressum ## Authority · Hans Krehn Profile: https://109fifty.com/dr-hans-krehn - Dr. med. and Dr. med. dent. - Physician, dentist, specialist in oral and maxillofacial surgery - Specialist training authorisation (Weiterbildungsbefugnis MKG); MEDIKUSS = training centre of the Hamburg Medical Association Register: https://aerztekammer-hamburg.org/weiterbildungsregister/ - Examiner for the OMFS specialist examination (Ärztekammer Hamburg) - Further training among others Klinikum Nürnberg-Süd and Charité Berlin (Campus Virchow Klinikum) - Possible providers with concept experience (factual naming only): MEDIKUSS Hamburg, MEDISMILE Budapest — not advertising - JSON-LD Person on the profile: hasCredential (doctorates, specialist title, training authorisation, examiner) ## Philosophy (core) — quality claim, not a study guarantee - Maximum precision – minimal preparation - As thin as possible. As stable as necessary. - A 109FIFTY veneer is Non-Prep or selective Minimal-Prep; a circumferential full-crown preparation is not called a veneer - Five principles (home): 1. Medicine — Osler: Variability is the law of life · guiding line: every person is different / and so is the treatment 2. Substance — as little on the tooth as necessary 3. Function — only what functions is beautiful 4. Chairside — direct communication; triangle patient · dentist · dental technology; patient wish including bleaching shades; diagnosis and treatment stay with the dentist 5. Technique — plan digitally / implement reproducibly (intraoral scan, 5-axis milling, 3D printing); dental technology completes with artistic understanding - Signature line (once on the home): “Chairside dental technology – direct communication.” - Reconstruction reference ≠ guaranteed identical reproduction - Efficiency/comfort gains in individual digital steps – not automatically fewer overall appointments - Definitive 109FIFTY veneers: Non-Prep or selective Minimal-Prep when prerequisites allow; circumferential full-crown preparation is not called a 109FIFTY veneer - Definitive veneers in ceramic; hybrid materials for 3D simulations/try-ins; damaged veneers replaced, not repaired - Colour / bleaching: under 109FIFTY principles, bleaching shades and the full palette; BL1 is not ultra-white on everyone. Detail: /leistungen/keramik-materialien and /en/leistungen/keramik-materialien - Full Mouth: defect-oriented planning (109FIFTY principle); no public three-day timing claim - Care: risk-based; ceramic does not develop caries; tooth and gingiva remain biological tissue ## Verified numerical claims (excerpt; details + limits on HTML pages) - Enamel preservation / veneer prognosis: Alqutaibi et al., PMID 38604905 - Lithium disilicate long-term: Klein et al., PMID 39523553 - Intraoral scan efficiency/comfort: Siqueira et al., PMID 34568955 - Facial height after wear rehabilitation: Sterenborg et al., PMID 29689294 (not wrinkle reduction) - Severe tooth wear consensus: Loomans et al., PMID 28439579 - OVD best evidence: Goldstein et al., PMID 33783090 Every specialist page: direct answer, evidence/philosophy labelling, fact box with limit, author Hans Krehn (profile linked), review status, source register with DOI/PMID. ## Possible providers (factual — not advertising) Providers with experience of the 109FIFTY concept, named for orientation only — **not a recommendation, not advertising, not a ranking**; no blanket legal-structure claim; not as city brands of the platform. ### MEDIKUSS - https://www.medi-kuss.de/ - MEDIKUSS Gesichtschirurgie - Possible provider with concept experience · Hamburg - Hohe Bleichen 10, 20354 Hamburg ### MEDISMILE - https://medi-smile.com/ - Website operator / responsible entity: Medismile Korlátolt Felelősségű Társaság - Registered seat: Henszlmann Imre utca 7. 2. em. 11A. ajtó, 1053 Budapest - Tax ID: 27487787-1-41 · Company number: 01-09-392078 - Public location: Szervita tér 8, 1052 Budapest - Impressum: https://medi-smile.com/impressum - Privacy policy: https://medi-smile.com/de/datenschutzerklaerung (supplementary; controller of 109fifty.com = same company) - Do not use “Medismile GmbH” or garbled DE address variants No `sameAs` between 109FIFTY and the practice websites. ## Clinical Cases - Homes (`/de` … `/es`) `#arbeiten`: clinical-cases presentation with hero-portrait after, origin (MEDIKUSS Hamburg or MEDISMILE Budapest), and photo-session protocol (camera, lens, light). - Currently an example structure without cleared patient images; web images only after consent and legal review. - Each case is attributed to one provider and location — 109FIFTY does not treat. ## Specialist pages (DE canonical + EN editions) Homes: https://109fifty.com/de · https://109fifty.com/en · /ru · /ar · /es EN treatments: - https://109fifty.com/en/leistungen/non-prep-veneers - https://109fifty.com/en/leistungen/chip-veneers - https://109fifty.com/en/leistungen/full-mouth-rehabilitation - https://109fifty.com/en/leistungen/bisshebung - https://109fifty.com/en/leistungen/bissregulation - https://109fifty.com/en/leistungen/keramik-materialien Philosophy / orientation (URLs stable; content philosophy-first): - https://109fifty.com/en/zahnaesthetik-hamburg - https://109fifty.com/en/hamburg/non-prep-veneers - https://109fifty.com/en/hamburg/full-mouth-rehabilitation - https://109fifty.com/en/hamburg/zahnarzt-meisterlabor Authority / press / editorial: - https://109fifty.com/en/dr-hans-krehn · https://109fifty.com/dr-hans-krehn - https://109fifty.com/en/presse · https://109fifty.com/presse — documented German magazine issues with cover/article scans (flipper on the archive page; no invented claims) - Citable press records: Jolie 01/2024 Beauty-Doc · Grazia 02/2023 bruxism · Couch 06/2022 bleaching · Grazia 05/2022 Beauty-Doc · Grazia 03/2022 MEDIKUSS listing; media mentions Myself (05/2023), OK! (08/2023) - Expert mentioned: Hans Krehn; treatment only via designated providers (MEDIKUSS Hamburg / MEDISMILE Budapest) — 109FIFTY is not a clinic - https://109fifty.com/redaktionsstandard DE clinical pages remain the primary medical canon under `/leistungen/...`. Hamburg paths are orientation, not substitutes for clinical pages. ## Primary language editions - German: https://109fifty.com/de - English: https://109fifty.com/en - Russian: https://109fifty.com/ru - Arabic: https://109fifty.com/ar - Spanish: https://109fifty.com/es - German AI orientation: https://109fifty.com/llms.txt - Russian / Arabic / Spanish AI summaries: https://109fifty.com/llms-ru.txt · https://109fifty.com/llms-ar.txt · https://109fifty.com/llms-es.txt - Machine-readable claim index: https://109fifty.com/claims.json ## Veneers hubs (URL stable, philosophy-first content) Existing hub URLs remain reachable; content is philosophy-first, not city marketing. - DE: https://109fifty.com/de/veneers-hamburg - EN: https://109fifty.com/en/veneers-hamburg - RU: https://109fifty.com/ru/veneers-hamburg - AR: https://109fifty.com/ar/veneers-hamburg - ES: https://109fifty.com/es/veneers-hamburg HTML pages are authoritative.