Can you ask for a stop signal during dental treatment?

Why a sense of control matters in the dental chair

Lying back with your mouth open, unable to speak clearly, while someone else decides when the drill starts and stops: for many people that loss of control, more than any particular procedure, is the hard part of a dental visit. Anxiety is a normal response to a situation that feels threatening, and dental fear is widespread. In a late-2024 survey of 1,003 US adults selected to reflect the make-up of the US population, most respondents reported some degree of dental fear, and roughly one in four described it as severe.

Research on dental anxiety has looked specifically at control. In research published in 1991, dental patients who wanted a high degree of control but felt they had little of it reported the most distress before, during and after treatment, and remembered the visit as more unpleasant a week later. The mismatch between the control you want and the control you feel may matter more than the procedure itself. A follow-up trial found that coping training reduced pain mainly in that same group, which suggests that people who want control benefit most from help in feeling they have some.

Two small trials have tested tools that hand some of that control back. In one, a chair-mounted electronic communication system let anxious patients signal the dentist during root canal treatment. In a later randomized trial, 46 patients having root canal treatment were randomly assigned either to use a tablet or smartphone app to communicate with the dentist during the procedure or to usual care, and the app group showed lower levels of salivary cortisol, a stress hormone, than the group without it. These are single, small studies in one type of treatment, so they are a reason for cautious optimism rather than proof. The ADA's patient site makes the practical version of the same point: tell your dentist about your anxiety and agree on a signal, such as raising your hand, that means you need a break.

What a stop signal can and cannot do

A stop signal is a request to pause. It works best when both sides understand what "pause" means at each stage of a procedure.

Moments when a pause is immediate

During most of an appointment, stopping is simple. While the dentist is examining, numbing, polishing, taking photographs or a digital scan, placing a filling in layers, or trying in a crown, the instrument can usually come out of your mouth within a second or two of your signal. The same applies to the hygienist during a cleaning.

Steps that may need a few seconds

A small number of steps have a safe stopping point a few seconds away rather than immediately. The examples below are general; the team treating you confirms which apply to your plan.

• Shaping a tooth with a rotating instrument. The dentist usually finishes the current stroke and lifts the instrument away before pausing, so that a half-finished edge is not left in an awkward place.
• Bonding a restoration or veneer. Once adhesive or cement has been applied, the piece may need to be seated and set before anything can stop, because an interrupted bond may have to be redone.
• An impression setting in the mouth. Impression material sets on its own timetable, and removing it early usually means repeating it. A digital scan, by contrast, can usually be paused and picked up again.
• Removing a tooth. Once an extraction is under way, the dentist may need to reach a point where the tooth is stable or out before pausing.

None of these means your signal is ignored. It means the dentist says "I see you, give me a few seconds" and then stops. A good communication agreement names these steps in advance so you know what to expect, and the dentist can tell you when one is about to start.

A stop is a pause, not a lost appointment

Using the signal does not end the visit. The usual sequence is: you signal, the dentist pauses, you say what is wrong, the problem is addressed (more numbing, a moment to swallow, a change of position, a rinse), and you agree together when to continue. If you decide you want to stop for the day, the dentist makes the tooth safe, often with a temporary filling or a temporary crown, and the remaining work is rescheduled. Saying so is not a failure, and you should not have to argue for it.

The communication agreement: what to settle before the first instrument

Agreeing on the details before treatment starts is what makes the signal useful under pressure, when you cannot talk. Six things are worth settling:

1. The signal itself. A raised hand is a common choice. Ask the team which hand is easiest for them to see from where they sit, since the dentist and assistant usually work from opposite sides of the chair. Some people prefer a sound or a squeeze of a stress ball. Choose something you can do with your mouth open and your eyes closed.
2. What happens next. The dentist pauses as soon as it is safe, removes instruments from your mouth, sits you up if you want, and asks what you need. Agree that there are no wrong reasons to signal.
3. How you ask for more numbing. Local anesthetic wears off over time and can fade during longer appointments. Agree in advance that a signal plus the word "pain" or "sharp" means the dentist checks the numbness and may add more, rather than asking you to tolerate it.
4. Warnings before sensations. Being told what you will feel before you feel it, such as pressure, vibration, cold water or a tugging sensation, has been studied under the name "sensation information." In a 1983 comparison of sensation information, perceived control and distraction against routine treatment, sensation information was the most effective of the three, which is one reason this guide pairs the signal with step-by-step narration rather than relying on the signal alone. Ask the team to narrate the next step before it starts.
5. Scheduled breaks. For a long appointment, a break at agreed intervals means you do not have to earn one by signaling. Shorter sessions over more visits are another option; whether that fits your treatment is something to ask about.
6. A plan for stopping for the day. Agree on what the dentist does to make the tooth safe, how the rest of the work is rescheduled, and whether anything changes for you, for example eating carefully on a temporary filling.

Write these down and bring them to the first appointment. The printable agreement at the end of this guide is a template; the version you confirm with your own treating team is the one that counts. Not every clinician uses identical wording, so confirm it with the person who will treat you. A companion guide, Nervous about the dentist? A first-visit plan that starts with your concerns, covers the wider first-visit conversation.

Other comfort options the practice lists

A stop signal is a communication tool, not a sedative, and it does not remove anxiety on its own. Loul Dental Studio lists several options it describes as "anxiety-free" on its services page: longer appointments, nitrous oxide, and anti-anxiety medication by prescription. They are described here as listed services; whether a given option is appropriate for you, and when it can be scheduled, is decided at an examination and a conversation, not on this page.

• Longer appointments can give more room for breaks and explanation. Ask the office how appointment length is decided for your treatment.
• Nitrous oxide is a gas breathed through a small mask over the nose. The ADA describes it as a form of minimal sedation in which patients relax while remaining awake and able to respond, so a stop signal can usually still be used.
• Anti-anxiety medication by prescription is taken before the visit as directed on the label. Because it can make you drowsy, the dentist reviews your medical history and other medications first, and you will usually need someone to drive you.

None of these replaces the agreement above. A stop signal still matters with sedation, because you may be slower to speak. If you have been putting off visits for a long time, Haven't seen a dentist in years? What to tell the office before you arrive explains what to say.

The next step

Request an appointment through the online appointment request page and mention that you are anxious and would like to agree on a stop signal before any treatment. A request is not a confirmed appointment; the team follows up. Ask the office whether anxiety can be noted on the request form so that the conversation starts before you arrive. You can also call (805) 565-5111 during office hours, Monday to Thursday, 8:00 am to 5:00 pm. For what to bring to a first visit, see Your first visit to Loul Dental Studio: what to ask and what to bring.

If you are in pain now, say so when you call. Breathing or swallowing difficulty, rapidly spreading facial or neck swelling, fever with facial swelling, uncontrolled bleeding or severe trauma need emergency care: call 911 or go to the nearest emergency department rather than using the request form.