Session 2 · Dental Operatory
Chairside Assisting Basics
The assistant's craft at the chair: prepare the operatory, keep the field clear, and pass the right instrument at the right moment — so the operator's hands and eyes rarely leave the mouth. In the VR clinic this is a graded run of nine steps, where step order is the score.
Graded run · 9 stepsStation B of the simulatorSkills: terminology · infection control · patient communication
Demo session. A demo program inspired by Unspoken Smiles' public work — not an official Unspoken Smiles program, not endorsed by or affiliated with Unspoken Smiles. Simulated training only — not certification, licensure, or clinical training, and not clinical hours.
The guided run
- Hand hygiene + PPE. Standard Precautions (CDC 2003) for every patient contact — hands clean, PPE on and fitted. Check: hands clean, PPE fitted.
- Set up the delivery unit. Handpieces, HVE and saliva ejector, suction, operating light — tested before the patient step begins. Check: unit set; suction and light checked.
- Lay the tray in working order. Instruments in sequence of use — mirror → explorer → periodontal probe → cotton pliers → HVE tip → gauze — and confirm the chart. Check: tray in sequence; chart confirmed.
- Run the chairside assist sequence with the coach. Four-handed work: pass, suction, keep the field clear. Check: sequence complete, in order.
- Turn over the room and debrief. Sharps straight to the sharps container — never recapped by hand, never passed hand to hand. Check: turnover done; debrief complete.
Run steps from the TradePath Training Centre scenario data (dental-operatory zone), grounded in the CDC Guidelines for Infection Control in Dental Health-Care Settings (2003), MMWR 52(RR17).
The method — four-handed dentistry
Dentist and assistant work one patient with four hands in a planned, coordinated way. The mouth is a clock face (for a right-handed dentist): the operator's zone is 7–12 o'clock; the transfer zone is 4–7 o'clock, below the patient's chin, where instruments and materials are passed and returned; the assistant's zone is 2–4 o'clock, with the mobile cart and suction close at hand; the rest is the static zone. Instruments never pass over the patient's face.
- Single-handed transfer: one hand passes and receives while the other stays on the syringe or suction. A right-handed dentist is served with the assistant's left hand.
- Hold the instrument near the end opposite the working end, working end angled the way the dentist will use it — up for the maxillary arch, down for the mandibular — and release only once the operator has firmly grasped it.
- Four stages: working → signal → pretransfer → midtransfer. The operator should never need to reposition what you hand them.
- Grasps: pen grasp, palm grasp, palm-thumb grasp — practised in the transfer drill on the Resources page.
Method source: dentalcare.com Continuing Education course CE643, “The Concepts of Four-Handed Dentistry,” with the HDAS four-handed dentistry guide — as recorded in the programme's research notes (verified 2026-11-07).
The comfort rule
In the simulator, force, angle, and anaesthesia state drive a visible patient comfort meter. Push too hard, work at the wrong angle, or skip an anaesthesia confirmation and comfort drops — the coach pauses the run and the step is redone. Calm banners, never jump-scares; the pressure dial defaults to Low, where missed calls cost nothing.
← Back to the programme · Next: Sterilization & Operatory Setup →