Dental Chairs | A-dec 400 Dentist Chair
A‑dec 400 dental chair

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A-dec 400 Dental Chair. Accessible. Strong. Style.

A‑dec 400 dental chair

Challenge: Besides a dental chair that's comfortable for both you and your patient, you need a robust dental chair that you can rely on for years of consistent performance.

Solution: A-dec 400 dental chair.

Instead of sacrificing ergonomic access to the oral cavity for patient comfort, get both with the A-dec 400 dental chair.

And when you add robust construction, contemporary styling, and left/right versatility, you gain a system that is the best long-term value available on the market.

A-dec 400, a thoughtful approach to dental system design.

A-dec 5 Year Warranty
Backed by a 5-year warranty.


Top 100 products 2015

Dentistry Today chose the A-dec 400 dental chair as one of their Top 100 Products 2015.


Dentistry Today Top 50 Technology Products

The A-dec 400 chair was chosen as a 2015 Top 50 Technology Product by Dentistry Today readers.

A‑dec 400 dental chair

Pure comfort for you and your patients. Patient comfort is paramount in reducing anxiety. The A-dec 400 dental chair design helps put your patients at ease.

The key to productivity and career longevity is remaining comfortable while you work. This is why A-dec 400 is designed to keep your movement fluid and ergonomically aligned.


Left-right versatility for added productivity. The Radius delivery systems, cuspidor, and A-dec 500 assistant's instrumentation quickly and easily rotate around the chair for complete left/right compatibility.
A‑dec 400 dental chair
  • Ultra-thin backrest that "flexes" (1", 25 mm). Enables you to tuck your knees under the chair providing ergonomic access to the oral cavity.
  • Double-articulating gliding headrests. Adjusts easily for optimal patient positioning. Available in locking knob and lever release styles.
  • Full height range. Offers a range from 13.75" to 31.25" (349 mm to 794 mm). Low point 14.75" (375 mm) with dual mounting.
  • 2-position armrests. Combines comfortable arm/elbow support with a robust load-bearing design for easy patient entry and exit.
  • 60º swivel with brake. Allows 30º rotation on each side of center.
  • Hybrid chair lift system. Combines the power of a hydraulic base and the smoothness of an electro-mechanical tilt, allowing simultaneous movement for quicker patient positioning.
  • Integrated 300-watt power supply. Provides more than enough power for the whole system; powers light and additional ancillary devices.