Variability is the law of life.
— William Osler
Guiding principle
every person is different
and so is the treatment.
109FIFTY · Treatment philosophy
Maximum Precision
Minimal Preparation
Ceramic veneers and complex rehabilitations with as little tooth-structure loss as possible – planned digitally, coordinated chairside.
Non-Prep where possible. Minimal-Prep where necessary. Direct instead of via detours.
109.5°
Philosophy
Five principles.
One stance.
As little on the tooth as necessary.
Only as much is prepared as findings, form and function require – not a standard scheme.
Only what functions is beautiful.
Tooth form, bite and guidance belong together. Aesthetics without function is not credible.
Chairside dental technology – direct communication.
The patient’s wish has the highest priority – bleaching shades are not rejected. Expression, form and colour are clarified in the triangle patient · dentist · dental technology before definitive ceramic is made.
Plan digitally. Implement reproducibly.
Intraoral scan, design software (e.g. exocad®), 5-axis milling and 3D printing enable maximum reproducibility and targeted planning. Evidence supports efficiency and comfort gains in individual steps – not automatically fewer overall appointments. Digital tools replace neither diagnosis nor individual coordination. Dental technology completes the work with artistic understanding and craft skill.
Cases
Clinical-case presentation with hero-portrait after. Each case is attributed to one provider and location – with photo-session protocol (camera, lens, light). Cleared patient web images appear only after consent and legal review; until then image slots stay empty.
Example structure / individual cases – not a typical outcome promise. Treatment only at the designated provider – not by 109FIFTY.
Focus pages
Go deeper
Clearly ordered
Veneers
Non-Prep where possible. Minimal-Prep where necessary. A circumferential full-crown preparation is not called a 109FIFTY veneer.
Open page ↗Bite & Function
Tooth form, bite, support zones and guidance are planned together. Aesthetics must not be designed against function.
Open page ↗Full Mouth
Complex rehabilitations are fully pre-planned and realised in a clearly structured clinical implementation phase.
Open page ↗Materials & colour
Ceramic selection by indication, shade and light behaviour — with a clear separation of material data and individual aesthetic planning.
Open page ↗Chip Veneers
Small ceramic additions for local form deficits — as thin as sensibly possible, as stable as necessary.
Open page ↗Bite elevation
Planned gain of space in wear or limited clearance — function and vertical relation before an aesthetic template.
Open page ↗Digital × Chairside × Dental technology
Capture.
Clarify.
Try-in.
Implement.
- 01Capture
Intraoral scan, photography and the functional starting situation as a plannable data basis.
- 02Clarify the goal together
Align patient wish (including shade/bleaching), expression and function in the triangle patient · dentist · dental technology.
- 033D try-in
Assess smile design and 3D simulation on the patient – make form, length and lip effect visible before definitive ceramic.
- 04Implement
Design in exocad®, 5-axis milling and 3D printing for reproducible implementation; try-in and fine adjustment remain chairside.
Planned digitally.
Clarified together.
Implemented reproducibly.
Behind the philosophy
MEDICINE · DENTISTRY · OMFS
Hans
Krehn
109FIFTY was developed from the clinical experience of Hans Krehn. His background in medicine, dentistry and oral and maxillofacial surgery shapes an approach that considers tooth structure, function, face, tissue and material together.
The starting point is the conviction that high-quality ceramic does not arise from a chain of handovers. Medical diagnosis, functional planning, the patient’s goal and the dental technician’s direct perception must come together early.
The focus is not the greatest possible change, but the most precise change that can be justified.
Hans Krehn
Physician, dentist and specialist in oral and maxillofacial surgery
AboutKnowledge
Briefly explained
What does 109FIFTY mean?+
109.5° is the characteristic tetrahedral angle of the carbon structure of a diamond. For 109FIFTY it stands as a model of thought for material, precision and stable form – maximum accuracy with minimal intervention.
Why ceramic as the definitive veneer?+
Definitive 109FIFTY veneers are ceramic restorations – often more colour-stable and more durable at the margin than typical composite or resin veneers, which can yellow and look bulky with large form changes. For 3D simulations we use hybrid materials. Damaged veneers are replaced, not repaired; partial crowns where needed.
What does maximum precision, minimal preparation mean?+
As little on the tooth as necessary: Non-Prep or selective Minimal-Prep. A full-crown preparation is not a 109FIFTY veneer.
What does chairside dental technology mean?+
Shared coordination of patient · dentist · dental technology at the chair. Digital tools serve planning and reproducibility; diagnosis and treatment stay with the dentist.
What do the cases on the home page show?+
The section shows clinical cases as hero-portrait after with origin (MEDIKUSS Hamburg or MEDISMILE Budapest) and photo-session protocol. Cleared patient images appear only after consent and legal review. 109FIFTY does not treat; treatment only at the designated provider. Not a typical outcome promise.
Factual note — not advertising
Possible providers with concept experience.
109FIFTY does not treat and does not advertise. Where treatment is considered at all, it can only take place with providers who have experience of this concept. At present those are, as a matter of fact, MEDIKUSS (Hamburg) and MEDISMILE (Budapest). Naming them is orientation only — not a recommendation, ranking, or invitation to book. Examination, diagnosis, counselling, contract and aftercare remain solely with the treating provider.
HamburgNote
MEDIKUSS
MEDIKUSS · HamburgPossible provider with experience of the 109FIFTY concept. Not a recommendation or advertisement by 109FIFTY.
MEDIKUSS website ↗BudapestNote
MEDISMILE
MEDISMILE · BudapestPossible provider with experience of the 109FIFTY concept. Not a recommendation or advertisement by 109FIFTY.
MEDISMILE website ↗Next step
Information
or treatment?
Specialist information
Questions about published content, sources or editorial topics should go to the 109FIFTY editorial team. Please do not send confidential health data by unencrypted email.
Contact editorial ↗Treatment (not via 109FIFTY)
109FIFTY does not advertise and does not broker care. Possible providers with experience of the concept are, in fact, MEDIKUSS (Hamburg) and MEDISMILE (Budapest) — without recommendation and without solicitation.