A-dec® 311 Ergonomic Dental Chair

A-dec® 311 Ergonomic Dental Chair - Distributed by Henry Schein

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The A-dec 311 dental chair is a top-notch choice for both patients and clinicians, offering comfortable patient positioning, plenty of room for you and your staff to move around, excellent access to the oral cavity and easy-to-use controls.

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Versatile, robustly built and ergonomic, the A-dec 311 dental chair provides an exceptional patient experience in a compact package. Its small footprint suits a variety of operatory spaces, while the modular design of the A-dec 311 allows you to select the features you want at the price point you need. Each dental chair allows for patient positioning that’s relaxing for the occupant, with its pressure-mapped, contoured surface, virtual pivot, ample shoulder support and double-articulating gliding headrest. But that’s not all: This A-dec dental chair is engineered to promote healthy posture and optimal comfort for you and your team, enabling freedom of movement, lots of legroom and easy, ambidextrous access to the oral cavity.

  • Smooth moves. The A-dec 311 ergonomic dental chair features a hybrid chairlift design that delivers smooth, quiet raising, lowering and tilting for desired patient positioning, along with a 60-degree swivel with brake (30-degree rotation on each side of center)
  • Underfoot. This A-dec dental chair can be operated via footswitch either manually or by pressing the programmed preset buttons
  • Sturdy. With its sewn upholstery, cast-iron baseplate and reliable technology  plus, the option of digital connectivity  this dental chair is built to last 20 years or more
  • Clinician comfort. A thin, flexible backrest allows you and your team to work comfortably, with legs under patient and elbows at your side
  • Customizable. Available in multiple style and color configurations for a custom, tailored look

Base height range


High point: 31.5" (800 mm)

Low point: 13.75" (349 mm), or 14.75" (375 mm) with dual mount


Backrest Thin, flexible. 1.25" (32 mm) with formed upholstery

Chair swivel 60° (30° each side of center)

Lift system Hybrid drive (electromechanical tilt, hydraulic base)

Headrest Dual-articulating gliding headrest with locking knob

Armrests 2-position


Power supply Integrated 300-watt

Chair control Delivery system control pad or foot switch

Mount style Floating - post mount or Radius (single or dual mounting)

Upholstery options Sewn or formed

UL load rating UL rated to 400 lb (181 kg) maximum patient load. Load rating is based on UL requirement of 4X (1600 lb/725 kg) overload static testing

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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