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“Do fillings hurt?” is one of the most common questions patients ask before visiting the dentist, and it is entirely understandable. Concern about pain during dental treatment is widespread, and for many people it is the primary reason they delay booking an appointment. The reassuring reality is that modern dentistry uses local anaesthetic to numb the treatment area, meaning that most patients feel pressure rather than pain during a filling. However, experiences can vary depending on the size and depth of the cavity, individual sensitivity, and the type of filling material used. This guide explains what to expect during and after a cavity filling, so you can feel more informed and prepared.
For most patients, having a filling does not cause significant pain. Local anaesthetic is used to numb the tooth and surrounding area before the procedure begins, which means the drilling and filling process itself is typically felt as pressure rather than pain. Some mild sensitivity or tenderness after the anaesthetic wears off is common but usually short-lived.
It is important to communicate with your dentist throughout the procedure. If you feel any discomfort during treatment, additional anaesthetic can usually be administered to ensure you remain comfortable.
During the filling procedure itself, most patients do not experience pain. The local anaesthetic injection may cause a brief moment of discomfort — often described as a small pinch or stinging sensation — but once the area is fully numb, the process of removing decay and placing the filling is generally well tolerated.
The step-by-step process is straightforward. First, a topical numbing gel may be applied to the gum to reduce sensation from the injection. The local anaesthetic is then administered, and once it has taken full effect, the dentist removes the decayed portion of the tooth using a dental handpiece. The cavity is cleaned and prepared, and the filling material is placed, shaped, and polished. Throughout this process, you should feel pressure and vibration but not pain.
If at any point you experience discomfort, raise your hand to let your dentist know. Additional anaesthetic can be given, and a brief pause can help you feel settled before continuing.
Once the local anaesthetic wears off — usually within two to four hours — it is common to experience some mild tenderness or sensitivity in the treated tooth. This is a normal response and typically settles within a few days as the tooth adjusts to the new filling.
The level of post-treatment sensitivity often correlates with the depth of the cavity. Shallower fillings tend to produce less sensitivity, while deeper cavities — where the filling is closer to the tooth's nerve — may take a little longer to settle. If your filling was for a particularly deep cavity, your dentist will usually explain this and advise on what to expect.
Post-filling sensitivity is a recognised and common occurrence. There are several reasons why a tooth may feel sensitive after a filling, most of which are related to the natural response of the tooth to the treatment it has received.
In most cases, this sensitivity diminishes naturally as the tooth heals. If you notice that the bite feels uneven or if pain is concentrated when you bite down on the filling, a simple bite adjustment at a follow-up appointment can often resolve the issue quickly.
The length of a filling appointment depends on several factors, including the size and location of the cavity, the type of filling material used, and whether anaesthetic is required. Most single fillings can be completed within one appointment, though the total time varies from patient to patient.
Your dentist will give you an indication of how long the appointment is likely to take when you book. If you are having a white filling, the process may take slightly longer than a traditional amalgam filling, as the composite material is applied and cured in layers. However, the difference is usually modest.
While mild sensitivity after a filling is normal, there are certain signs that may indicate something requires further attention. If you experience any of the following, it is advisable to contact your dental practice for a review.
These signs do not necessarily indicate a serious problem, but they are worth having assessed. In most cases, the solution is straightforward — such as a bite adjustment or monitoring the tooth. If pain is severe or you are unsure whether your symptoms are normal, contacting an emergency dentist can provide reassurance and prompt assessment.
There is no significant difference in pain between white (composite) fillings and silver (amalgam) fillings. The level of discomfort during and after treatment is determined primarily by the size and depth of the cavity being treated, rather than the type of filling material used.
The choice between white and silver fillings is typically based on aesthetic preference, location of the tooth, and clinical suitability rather than pain considerations. Your dentist can discuss the options and help you decide which material is most appropriate for your situation.
If you feel anxious about having a filling, you are not alone. Dental anxiety is very common, and there are several practical steps that can help you feel more comfortable and prepared before your appointment.
Many dental practices are experienced in supporting anxious patients and can offer additional measures to help you feel at ease. Communicating openly with your dental team is the most important step — they are there to help you through the process as comfortably as possible.
Without anaesthetic, having a filling can be uncomfortable or painful, particularly if the cavity extends into the deeper layers of the tooth. In most cases, local anaesthetic is used to numb the area before the procedure begins. Your dentist will discuss anaesthetic options with you and ensure you are comfortable before starting treatment.
Most patients report feeling pressure rather than pain during a cavity filling, as local anaesthetic is used to numb the tooth and surrounding area. Some brief discomfort may occur during the numbing injection itself, but the procedure is generally well tolerated. Mild sensitivity afterwards is common and usually settles within a few days.
The numbing injection for a filling may cause a brief sharp sensation or stinging feeling, but this typically lasts only a few seconds. Many dentists apply a topical numbing gel to the gum beforehand to reduce discomfort from the needle. Once the anaesthetic takes effect, the area becomes numb and the procedure can proceed comfortably.
Mild sensitivity or tenderness after a filling is common and usually settles within a few days. Some patients experience sensitivity to hot, cold, or pressure for up to a couple of weeks, particularly with deeper fillings. If discomfort persists beyond this period or worsens, it is advisable to contact your dental practice for a review.
If your filling continues to cause discomfort beyond a couple of weeks, or if the pain is worsening rather than improving, it is advisable to contact your dental practice. Persistent pain may indicate that the bite needs adjusting, or in some cases, further investigation may be required. Your dentist can assess and advise accordingly.