Root canal treatment is considered a routine procedure in modern dentistry. However, the effectiveness of the procedure depends on tools such as dental X-rays, which are crucial not only for diagnosis but also for planning the treatment.
Although many people are still wary of root canal treatment, thanks to advanced diagnostic tools and treatment methods, the procedure can be carried out not only painlessly but also with outstanding effectiveness.
And one of the keys to success is undoubtedly the dental X-ray its use, which helps dentists achieve the desired outcome in many ways. Why is imaging essential before root canal treatment?
As this is a very common question, in this article we have now examined the topic from every angle, with a particular focus on its impact on treatment outcomes.
What happens during a root canal treatment?
The aim of root canal treatment is to ensure that an inflamed, damaged or painful tooth can be preserved. However, to prevent it from causing symptoms – particularly pain – the pulp, which is rich in nerves and blood vessels, must first be removed.
During the procedure, the dentist opens up the tooth via the crown, then removes the pulp, along with the infected tissue, and, following laser cleaning of the root canal, fills the root canal appropriately.
During the first appointment, only medication and a temporary filling are used; then, once the dentist is satisfied that the treatment has been successful, the tooth is sealed with a permanent filling and crown at a subsequent appointment.
In the case of severely damaged teeth, the final restoration may, of course, be carried out using methods other than fillings – such as inlays or onlays, or in some cases a full crown.
The success of root canal treatment depends not only on the dentist’s expertise and the equipment used, but also on obtaining an accurate picture of the condition inside the tooth. This is where dental X-rays become particularly important.
The role of dental X-rays in diagnosis
During a routine oral examination, dentists can only see the crown of the teeth; to view the parts that lie deeper, beneath the gums, they will need to use imaging techniques.
If a tooth requires root canal treatment, the majority of problems are usually found beneath the surface, within the root canal, in the surrounding tissues or in the bone itself.
However, dental X-rays can reveal these lesions, which are invisible to the naked eye, thereby enabling a more accurate diagnosis. For example, they can be used to detect
-
inflammation around the root apex;
-
bone loss;
-
hidden tooth decay;
-
a cyst or other pathological formation;
-
as well as problems arising from previous treatments.
An accurate diagnosis is crucial, as a problem that is not properly recognised or is misdiagnosed can lead to unsuccessful treatment. In the case of root canal treatment, this is made even more difficult by anatomical challenges!
Challenges in diagnosis
The root canals of teeth are extremely complex and varied. Molars, in particular, have multiple canals, which may run in different directions or branch off, and this can make it difficult to carry out root canal treatment effectively.
However, with the help of a dental X-ray, the dentist can determine exactly
-
the number of roots,
-
the route and location of the drains,
-
as well as their lengths and any curvature they may have.
This is very important because any root canals that are missed during root canal treatment can lead to infection and, consequently, the persistence of symptoms; however, this problem can be prevented by taking an X-ray.
Dental X-rays are essential for planning root canal treatment
For a root canal treatment to be successful, an accurate and precise treatment plan is required. Dentists must draw up a personalised plan in every case before the procedure.
The treatment plan naturally depends on a number of factors, and dental X-rays are always used to answer any questions that arise, as they help to determine
-
the anatomical characteristics of the tooth;
-
the extent of the infection;
-
and the condition of the surrounding bones and tissues.
With this knowledge, root canal treatment can be carried out with a much higher success rate and fewer potential complications.
An X-ray also helps to determine whether conventional root canal treatment is sufficient, whether there is any risk of complications, and, in certain cases, it also supports the need for a 3D CBCT scan.
The success of the treatment is also determined by dental X-rays
A dental X-ray can also be used to check whether the root canal treatment has been successful. It allows the root canals to be visualised along their entire length, thereby confirming both their cleanliness and the quality of the filling material.
X-rays make it easy to prevent any issues relating to the filling, and to check the quality and extent of the filling, so that the cavity can only be permanently sealed once everything is in order.
It is therefore common for an X-ray to be taken after treatment to confirm that the procedure has been successful, thereby ensuring that the patient can continue to keep their original, though no longer viable, tooth without any problems for years to come.
A panoramic X-ray or a conventional dental X-ray?
There are several types of dental X-rays, such as panoramic and periapical X-rays. It is usually sufficient to use just one of these to achieve the desired result; however, in some cases, both may be required for the procedure to be successful.
A periapical or conventional X-ray is typically suitable for the detailed examination of one or two teeth; it is therefore an appropriate choice in simpler cases, as it can provide a high-resolution image of the root canal and the immediate surroundings of the affected tooth.
In contrast, a panoramic X-ray reveals the entire set of teeth as well as the jawbone, which is why it is required prior to root canal treatment if there is an underlying problem affecting several teeth or the entire jawbone, or if abscesses or other lesions are complicating the procedure.
It is important to note that these two methods are not interchangeable; rather, they complement one another to ensure an accurate diagnosis, and in most cases, it is sufficient to carry out just one of them when planning treatment.
3D imaging (3D CBCT)
In addition to dental X-rays, we must certainly also mention 3D CBCT when discussing imaging techniques, as it currently represents the most advanced alternative.
This technology provides a three-dimensional image of the teeth and surrounding structures, which can be particularly helpful in ensuring a successful procedure, even in the most complex cases.
3D imaging is most commonly used in cases such as dental implants, in other words, it is not a substitute for X-rays, but a completely separate imaging technology, which is also used effectively in microscopic root canal treatment.
The risks of root canal treatment without dental X-rays
The question naturally arises: what happens if root canal treatment is carried out without an X-ray? It is important to note that, as this diagnostic imaging involves minimal radiation exposure, the dentist will always consider whether its use is justified.
In the case of a tooth where no complex procedures are expected – because it has only one root canal – the procedure can be carried out without a dental X-ray, but for a molar, imaging is now part of the standard protocol in most dental practices.
Without it, the risk of complications increases, as hidden and untreated root canals may remain undetected without an X-ray; and there is a risk that the source of the infection will not be eliminated, which could lead to a recurrence of inflammation or even tooth loss.
For this reason, modern dental practices no longer take any risks and routinely take X-rays before any major procedure.
Dental X-rays and radiation exposure
Whenever dental X-rays are mentioned, the issue of radiation exposure usually comes up. It is important to note, however, that modern dental practices no longer use the old-style equipment based on physical film, but instead employ the very latest digital X-ray machines.
Digital technology offers a host of advantages in this regard, as it operates with significantly lower radiation exposure, provides instant imaging and, moreover, delivers better image quality and, consequently, greater accuracy.
What’s more, modern dental X-rays not only use low levels of radiation, but are also administered within strictly regulated parameters, meaning that the diagnostic benefits far outweigh the minimal risks – particularly when the success of the treatment depends on it.
By way of comparison, the radiation exposure from a digital dental X-ray is less than the amount of background radiation we are exposed to during a flight.
Frequently asked questions
Is it necessary to take a dental X-ray before every root canal treatment?
In most cases, it is recommended, as it is essential not only for diagnosis but also for drawing up a treatment plan and ensuring that treatment is sufficiently precise.
Is it possible to carry out root canal treatment without an X-ray?
That may be the case, but it is becoming less and less accepted from a professional point of view, and in certain cases it is even essential for appropriate treatment.
How many X-rays are taken during root canal treatment?
This depends on the individual patient in every case. An X-ray is always required to start treatment and draw up a treatment plan, but it may also be necessary during and after treatment where justified.
Do dental X-rays hurt?
Not at all; a dental X-ray is a diagnostic imaging procedure that is completely painless; at most, the patient may experience only slight discomfort.
How long does it take to take a dental X-ray?
Whether you need a panoramic or a conventional intraoral X-ray, digital imaging takes just a few minutes.
How accurate are dental X-rays?
Dental X-rays produced using state-of-the-art digital technology provide an exceptionally accurate picture of the structure and characteristics of the teeth.
Can dental X-rays be taken during pregnancy?
Only in cases where there are strong medical grounds, and even then only with exceptional radiation protection. If emergency intervention is not required, it is advisable to postpone any treatments requiring imaging until after the birth.
Can it be used on children as well?
Yes, but only where justified, and using the lowest possible radiation dose.
What does it mean if a shadow is visible on a dental X-ray?
This typically suggests some form of local inflammation or infection, which always requires treatment.
Can an X-ray also reveal the cause of the pain?
Yes, but not in every case. A clinical examination is usually very important for a complete diagnosis; an X-ray is only truly effective when used in conjunction with that and the patient’s medical history.
Can tooth decay be seen on an X-ray?
Yes, and in fact this imaging method is particularly useful for detecting hidden or interdental caries.
How much does a dental X-ray cost?
Prices vary from clinic to clinic, but at the NaturaDent clinic, a full panoramic X-ray costs just 18,000 forints, whilst a periapical X-ray costs 11,000 forints.
How should you prepare for a dental X-ray?
It does not require any special preparation, but you must always remove any metal objects – such as earrings, piercings, hair clips and so on – beforehand.
How often can dental X-rays be taken?
As digital X-rays involve very low radiation exposure, there is no strict limit, but dentists only use them when justified.
Why is an X-ray still needed after treatment?
Mainly for the purposes of treatment and checking the results, to demonstrate that the filling is correctly positioned and sealed.
What is digital X-ray?
Digital X-rays do not produce images on physical film that can be held in the hand, but instead save the results as digital files, which can be viewed immediately, are easier to store and can be forwarded as required. This technology is not only faster, but also involves lower radiation exposure.
What happens if a dental X-ray does not provide a clear result?
In such cases, further imaging is usually required, such as a significantly more detailed 3D CBCT, which can provide a more accurate, three-dimensional image of the tooth.
