The detailed intraoral X-ray that sees what is hidden
The periapical X-ray is the most widely used intraoral examination in dentistry. It allows the complete structure of each tooth to be visualised in detail.
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2–3 teeth visible per X-ray
Each periapical image covers two to three adjacent teeth, from crown to root, including the surrounding supporting bone.
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Average time to complete the examination
The periapical X-ray is very quick, completed in approximately one minute, with no discomfort for the patient.
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Digital format at our clinic
All periapical X-rays are taken in digital format, with lower radiation and high-resolution images.
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Images for a full-mouth survey
A full periapical survey requires fourteen X-rays, which allow detailed visualisation of the entire dental arch.
0
2–3 teeth visible per X-ray
Each periapical image covers two to three adjacent teeth, from crown to root, including the surrounding supporting bone.
0min
Average time to complete the examination
The periapical X-ray is very quick, completed in approximately one minute, with no discomfort for the patient.
0%
Digital format at our clinic
All periapical X-rays are taken in digital format, with lower radiation and high-resolution images.
0
Images for a full-mouth survey
A full periapical survey requires fourteen X-rays, which allow detailed visualisation of the entire dental arch.
What is a periapical X-ray and what is it used for?
The periapical X-ray, also known as a periapical radiograph, is an intraoral diagnostic examination that allows detailed visualisation of the complete anatomy of one or more teeth — from the crown to the root tip — as well as the surrounding anatomical structures, including the alveolar bone and the periodontal ligament.
This examination is the most frequently performed in the dental surgery and is an indispensable tool for diagnosing various oral conditions.
At Clínica Médica Dentária Dr. Paulo Cardozo, our dentists use digital periapical X-rays because they offer high-resolution images with a significantly lower radiation dose than conventional methods.
“A periapical X-ray is like a high-precision magnifying glass. It allows our dentists to see what the clinical eye alone cannot detect, ensuring more accurate diagnoses and safer treatments.”
How the periapical X-ray examination works
The periapical X-ray is a simple and quick examination, using the latest digital intraoral sensors to capture high-resolution images with minimal radiation exposure.
Preparation and Protection
The patient is asked to remove any metal objects from the head and neck area. A lead apron is fitted to protect the body during the examination. The technician selects the appropriate digital sensor for the area to be examined and prepares the X-ray equipment.
Placement of the Intraoral Sensor
A small digital sensor, protected by a disposable cover, is positioned inside the patient's mouth, close to the area to be examined.
The patient gently bites on a holder that keeps the sensor in the correct position during the radiographic image capture.
Image Capture and Acquisition
The X-ray tube is directed towards the area to be examined and the exposure is taken. The exposure lasts less than one second and is entirely painless. The digital image appears immediately on the surgery monitor, allowing the dentist to verify the quality of the image and proceed with the clinical analysis.
Analysis and Digital Storage
The dentist assesses the image on the screen, adjusting the contrast and brightness to examine each structure in detail. The X-ray is stored in the patient's digital clinical record and can be accessed at any time and shared with other specialists if necessary.
Patient recommendations for the examination
The periapical X-ray is a simple examination that requires no special preparation. However, please follow these guidelines to ensure the best possible quality of the examination.
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Before the Examination
Please remove earrings, facial piercings and removable dentures. Inform the dentist of any relevant condition, such as pregnancy.
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During the Examination
Remain still and bite gently on the sensor holder. The exposure takes less than one second. The examination is completely painless.
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After the Examination
No special preparation is required. The image will be immediately available on screen for the dentist to analyse and explain.
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Follow-up care
The dentist will advise when the examination should be repeated based on the progress of your treatment. Please keep your records for future reference.
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Before the Examination
Please remove earrings, facial piercings and removable dentures. Inform the dentist of any relevant condition, such as pregnancy.
0
During the Examination
Remain still and bite gently on the sensor holder. The exposure takes less than one second. The examination is completely painless.
0
After the Examination
No special preparation is required. The image will be immediately available on screen for the dentist to analyse and explain.
0
Follow-up care
The dentist will advise when the examination should be repeated based on the progress of your treatment. Please keep your records for future reference.
What our patients say
The X-ray was very quick and I felt no discomfort at all. The image appeared on the screen straight away!
Ana Romão
Thanks to the periapical X-ray, the dentist was able to detect a cavity I didn't even know I had.
Jorge Pereira
I was nervous about the scan, but it was so simple and quick that I didn't even have time to worry.
Sofia Lisboa
Clinical indications for the periapical X-ray examination
The periapical X-ray is essential across multiple areas of dentistry. Discover the treatments for which this examination is most appropriate.
Endodontics
Diagnosis, planning, and monitoring of root canal treatments.
Restorative Dentistry
Assessment of bone loss around specific teeth.
Periodontology
Assessment of bone loss around specific teeth.
Implantology
Post-operative monitoring and follow-up of dental implants.
Oral Surgery
Assessment of root fractures and impacted or supernumerary teeth.
Orthodontics
Assessment of tooth roots before and during orthodontic treatment.
Ceramic Crowns
Assessment of tooth structure before the placement of fixed crowns.
Early and routine consultations
Monitoring oral development from the first teeth.
Book your appointment
At Clínica Dr. Paulo Cardozo, in Benavente, we carry out digital periapical X-rays using the latest equipment and ensuring maximum comfort.
Clínica Dr. Paulo Cardozo
R. Vasco da Gama 6,
2130-197 Benavente, Portugal
Telephone: +351 263 516 773
Mobile: +351 919 366 534
geral@clinicapaulocardozo.pt
Frequently asked questions
about the periapical radiograph examination
What is a periapical radiograph?
This is an intraoral X-ray taken by the dentist, which shows the complete structure of two to three teeth, from the crown to the root, including the supporting bone.
Does the examination cause pain or discomfort?
No. The periapical X-ray is completely painless. Placing the sensor inside the mouth may cause slight discomfort, but this lasts only a few seconds.
How long does it take to carry out?
The examination is very quick. Our dentists take approximately one minute, including sensor placement and taking the X-ray.
Is a periapical radiograph safe?
Yes. Digital X-rays use a very low radiation dose, and our dental team protects the patient with lead shields.
Can I have this examination during pregnancy?
In cases of urgent clinical need, the examination can be carried out with appropriate protection. Always inform our dentists if you are pregnant.
What is the difference compared to a panoramic X-ray?
The periapical X-ray focuses on two to three teeth in great detail. The panoramic X-ray (OPG), on the other hand, offers a panoramic view of the entire mouth.
How many radiographs are needed?
It depends on the diagnosis. Only one may be needed, or up to fourteen for a full periapical survey of the entire dental arch.
Are the results of a periapical radiograph immediate?
Yes. With digital technology, the image is generated in real time on the monitor and analysed immediately by the dentist during the appointment.
Do you offer digital periapical radiography?
Yes. At Clínica Dr. Paulo Cardozo we exclusively use digital X-rays, offering higher image quality and significantly less radiation.
Clinical Rigour and International Standards
The clinical team at Clínica Dr. Paulo Cardozo guides its practice in accordance with the guidelines of the leading oral health reference bodies, including the FDI World Dental Federation, the Ordem dos Médicos Dentistas (OMD), and the World Health Organization — Oral Health.
The continuous training and professional development of the clinical staff at Clínica Médica Dentária Dr. Paulo Cardozo, together with the integration of international recommendations into their practice, ensures that every procedure is carried out with safety and medical responsibility.