Four 60×60 LED slabs 50 € room, and the room is lit for 200 €: on paper, difficult to do better. So why do specialized manufacturers sell dental luminaires 20 to 50 times more expensive? Because the two products do not do the same job. Here is the honest comparison — including cases where slab is actually the right choice.
What you can't see on the product sheet of a slab at 50 €
- The real CRI: 80, rarely more. Sufficient for a corridor, insufficient to distinguish a healthy gum from an inflammatory gum or to validate a complexion of composite — dental requires a CRI ≥ 90, ideally ≥ 95.
- Unprocessed glare. A generalist slab often exceeds UGR 22; the limit for a workstation is UGR ≤ 19. Result: reverberation in instruments and glasses, permanent discomfort.
- The sparkle (flicker). The entry-level drivers sparkle in an invisible but real way — a direct contribution to the visual fatigue over 8 hours.
- Homogeneity and life span : yellowing diffusers, LEDs drifting in color, drivers' outages – the 50 € slab is not designed for 50,000 stable hours.
What a professional dental ceilinger brings
- CRI ≥ 95 with high R9 — the clinical criterion
- UGR ≤ 19 — micro-prisms or indirect lighting that remove reverberation
- 750 to 1 000 lux homogeneous on the working area, calculated for the height of your ceiling
- Drivers without sparkling, clean gradation, suitable color temperatures
- An architectural object — the ceiling contributes to the image of the firm instead of flattening it in open administrative space
Comparison in figures
Generalist LED plate — 30 to 300 € · CRI ~80 · UGR > 22 · no dental design
Professional LED dental panel — 500 to 1 800 € · CRI ≥ 90 · UGR ≤ 19 (e.g. EVO Slim, 1 200 €)
Ceiling / architectural suspension — €2,000 to €6,000 · clinical performance + design (e.g. Moon EVO, EVO Ring)
Ceiling lamp with built-in TV screen — 4 600 à 5 800 € (our TV ceiling guide)
The cases where the LED slab really suffices
An honest manufacturer tells you: generic slab has its place in the firm — but not in the clinical area.
- Technical room, reserve, archives — no visual requirement: the 50 € slab is the right choice
- Corridors — 100-150 lux without visual task: a correct slab (choose without sparkling) is suitable
- Facilities, staff health — Idem
In contrast, treatment room, sterilization and reception, the price difference is paid elsewhere: practitioner comfort, reliability of diagnosis, image perceived by the patient. Full arbitration by budget is in our price guide.
Real economic calculation
The 50 € floor slab in the treatment room is not an economy, it is a carry-over of cost: visual fatigue of the practitioner (the most expensive resource in the practice), rendered unfavourable shades, more frequent replacements, and a ceiling that devalues a six-digit layout. When compared to 25 years of use, the difference between a slab and a professional ceiling is a few euros per month — see the detailed calculation in our article energy saving and sustainability.
In summary
LED slab in service areas, professional luminaire in clinical areas : this is the rational distribution. A treatment room requires CRI ≥ 95, UGR ≤ 19 and 750-1 000 homogeneous lux — three criteria that no generalist slab meets, regardless of its price displayed. If you hesitate about a specific area of your office, send us its use and its dimensions via our form : we will tell you frankly whether a slab is enough or not.