What IS an OPG DENTAL X ray ?
Updated: Aug 22
What Is an OPG Dental X-Ray? How It Works, Safety and Benefits
An OPG dental X-ray is one of the most useful imaging tools in modern dentistry. It gives dental professionals a panoramic view of the teeth, upper and lower jaws, and surrounding structures in a single image.
Whether you are a patient preparing for an OPG scan or a dental professional considering new imaging equipment, understanding how OPG technology works can help you make more informed decisions.
What Does OPG Mean in Dentistry?
OPG stands for Orthopantomogram. It is a panoramic dental X-ray that captures both the upper and lower jaws in one wide image.
Unlike a small intraoral X-ray, which normally focuses on only a few teeth at a time, an OPG provides a much broader overview. This allows dentists to examine tooth position, jaw structure, developing teeth and other areas that may not be visible during a routine dental examination.
What Is an OPG Dental X-Ray Used For?
Dentists and other dental professionals may use OPG imaging for a variety of diagnostic and treatment-planning purposes.
Common uses include:
Assessing the position and development of wisdom teeth
Examining the jawbone and surrounding structures
Identifying signs of bone loss
Assessing unerupted or impacted teeth
Supporting orthodontic treatment planning
Investigating certain cysts, abnormalities or infections
Evaluating the general relationship between the teeth and jaws
Supporting implant and surgical assessment where appropriate
Because the entire dental arch can be viewed in one image, an OPG can provide valuable information before more detailed investigations are considered.
How Is an OPG Scan Performed?
An OPG scan is normally quick and straightforward.
The patient is positioned at the imaging unit while the head is carefully aligned. Depending on the equipment, the patient may stand or sit during the scan.
The X-ray unit then rotates around the patient's head to capture the panoramic image.
The scan itself generally takes only a short time, and digital systems can make the resulting image available almost immediately for assessment.
No instruments need to be placed deep inside the mouth, which can also make panoramic imaging more comfortable for some patients than conventional intraoral radiography.
Is an OPG X-Ray Safe?
OPG examinations use ionising radiation, so they should only be carried out when clinically justified.
Modern digital panoramic imaging systems are designed to produce diagnostically useful images while keeping radiation exposure as low as reasonably practicable.
Dental professionals assess whether an X-ray is required based on the individual patient's clinical needs.
Patients who are pregnant, or believe they may be pregnant, should tell their dentist or radiography professional before an examination so that the appropriate clinical decision can be made.
What Is the Difference Between OPG and CBCT?
Although OPG and CBCT systems are both used in dental imaging, they provide different types of information.
An OPG produces a two-dimensional panoramic image. It is useful when the clinician needs a broad overview of the teeth, jaws and surrounding anatomy.
A CBCT, or Cone Beam Computed Tomography scan, produces three-dimensional imaging. This can provide substantially more anatomical detail and allows clinicians to examine structures from multiple angles.
CBCT may be used in areas such as:
Dental implant planning
Complex oral surgery
Endodontic assessment
Impacted teeth
Detailed anatomical evaluation
Selected orthodontic cases
The appropriate imaging technique depends on the clinical question being investigated. A CBCT should not simply replace an OPG when three-dimensional imaging is not clinically required.
OPG Dental X-Rays for Children
Panoramic imaging can also be useful in paediatric and orthodontic dentistry when clinically indicated.
An OPG may allow a dental professional to examine developing adult teeth, eruption patterns and the general development of the jaws.
This can provide valuable information during orthodontic assessment and treatment planning.
As with all dental radiography, imaging should only be performed when there is a clear clinical justification.
The Importance of High-Quality Dental Imaging
Reliable imaging can play an important role in diagnosis and treatment planning.
For dental practices, image quality is only one part of the equation. Equipment reliability, software, positioning, workflow, servicing and technical support can all influence how effectively an imaging system performs in day-to-day practice.
Investing in modern dental imaging technology can help practices improve workflow while giving clinicians access to the diagnostic information they need.
Choosing an OPG or CBCT System for Your Dental Practice
Practices considering new imaging equipment should look beyond the specification sheet.
Important factors can include:
Image quality
Available fields of view
OPG and CBCT capabilities
Software integration
Ease of patient positioning
Installation requirements
Training
Servicing and maintenance
Technical support
Long-term operating costs
Choosing the right system depends on the treatments offered by the practice, patient volume, available space and clinical requirements.
OPG and CBCT Equipment from Diamed Engineering
Diamed Engineering Ltd supplies and supports dental equipment and digital imaging solutions for practices across the United Kingdom.
We work with dental practices at every stage of the equipment process, from initial advice and equipment selection through to installation and ongoing after-sales support.
Our team can help practices assess suitable OPG and CBCT imaging systems based on their clinical requirements, available space, workflow and budget.
Diamed Engineering supports dental practices across areas including Birmingham, Solihull, Leamington Spa, Stratford-upon-Avon, Coventry, Corby, Reading and London, as well as other locations across the UK.
If you are considering upgrading your dental imaging equipment or would like to discuss OPG or CBCT options, contact Diamed Engineering for advice and a quotation.
Frequently Asked Questions
What does OPG stand for?
OPG stands for Orthopantomogram, a panoramic X-ray image showing the teeth, jaws and surrounding structures.
How long does an OPG scan take?
The actual image acquisition is normally very quick, although additional time is needed for positioning the patient correctly.
Does an OPG hurt?
No. An OPG is a non-invasive imaging procedure and should not cause pain.
Is an OPG the same as a CBCT scan?
No. An OPG produces a two-dimensional panoramic image, while CBCT provides three-dimensional imaging and can show anatomical structures in greater detail.
Can an OPG show wisdom teeth?
Yes. Assessing the position and development of wisdom teeth is one of the common reasons panoramic dental imaging may be requested.
Do I need an OPG before dental implants?
That depends on the individual case. Implant assessment may require three-dimensional CBCT imaging rather than, or in addition to, panoramic imaging. The clinician will determine which examination is appropriate.
Conclusion
OPG dental X-rays provide dental professionals with a useful panoramic overview of the teeth and jaws in a single image.
They can support diagnosis, orthodontic assessment, wisdom tooth evaluation and treatment planning while helping clinicians decide whether further imaging is required.
For dental practices, selecting the right imaging equipment is equally important. Reliable technology combined with professional installation, training and ongoing technical support can help ensure an imaging system continues to deliver value throughout its working life.
Looking for an OPG or CBCT system for your dental practice? Contact Diamed Engineering to discuss your requirements and receive a quotation.



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