Bone assessment for dental implant

crochetBy appointment only
crochet rougeNot covered by the RAMQ

Three types of radiology exams are frequently prescribed by general dentists or dental specialists. These are :

A CT scan also known as CAT-scan, axial tomography, computer aided tomography, or computerized tomography is a medical imaging exam that uses X-rays to study and analyze a region of the body in 3D with high resolution which is then cut in very thin slices by a computer. This exam allows the clinician to see bone structures as well as soft tissue structures such as muscles of the maxillo-facial complex.

In dentistry, a CT scan may be prescribed for the following reasons :

• Pre-surgical dental implant evaluation of the alveolar bone
• Pre-surgical evaluation of the inferior alveolar canal position and relation with the roots of impacted teeth such as wisdom teeth
• TMJ (temporomandibular joint) assessment for degenerative joint disease and morphology
• Characterization of pathologies of the jaws such as cysts and tumors.
• Trauma or fractures of the jaws
• Processing of a 3D stereolithic model for better surgical planning
• Virtual surgical implant planning with third party software

Conebeam CT
Conebeam CT is a relatively new imaging modality in dentistry. It uses X-rays just like a CT-scan but at much lower doses. It is a 3D scanner which allows to acquire a complete volume of a region of interest such as the jaws in one full rotation around the head. The computer can then reconstruct the scan into 2D or 3D images.

Conebeam CT scans are used for the same purposes as medical CT scanners in dentistry. In addition, because of their low dose, they may also be prescribed for the evaluation of skeletal growth of the maxillo-facial complex and for the analysis of teeth position for a 3D cephalometric analysis and pre-orthodontic treatment. This imaging modality allows for the evaluation of bony structures.

MRI or magnetic resonance imaging
Magnetic resonance imaging or MRI is an imaging modality that reveals soft tissues of the body. MRI produces high resolution and detailed images in two and three dimensions to differentiate normal soft tissue from abnormal ones.

In dentistry, MRI is extremely valuable in assessing the temporomandibular joints (TMJ). It allows to visualize the articular disc’s position, to differentiate the different compartments of the articular space and determine if there is fluid in the joint, edema in the marrow and inflammation in the surrounding muscles.

Thanks to MRI, pathologies can be detected at an early stage and more easily, allowing for more efficient treatment planning.

MRI does not use X-rays.

For a CT-scan :

On the day of your appointment, you will be greeted by our staff on the third floor for your registration.

A CT-scan is a non-painful procedure.

Our radiology technician will ask you to lie down on your back on the scanner’s bed. Your head will be immobilized. The technician will then slide you into a big ring of great diameter. This ring produces X-rays only in the area of interest and 2D and 3D images are computed thereafter.

The duration of this exam is approximately 30 minutes.


On the day of your appointment, you will be greeted by our staff on the third floor for your registration.

A conebeam CT is a non-painful procedure.

Dr Manon Paquette will invite you to sit down in the machine. Your head will be resting on a head rest and a velcro band will be applied on your forehead to prevent any movement. You will be able to breathe slowly during the scanning procedure. The machine will turn one rotation around your head in a similar motion to the panoramic machine used in the dental office.

The scan lasts 10 seconds and the entire procedure lasts approximately 5 minutes.

For an MRI:

On the day of your appointment, you will be greeted by our staff on the third floor for your registration.

An MRI is a non-painful procedure.

Our radiology technician will ask you to lie down on your back on the MRI bed. A special receiver antenna will be positioned in the center of the area to be imaged. At any time during the procedure, you may communicate with the radiology technician by a microphone. Headphones are provided to listen to your choice of music or radio station.

It will be imperative that you remain still and not move during the acquisition part of the MRI to ensure that the images are clear and of good diagnostic quality. Earplugs are provided to reduce the continuous stumping sound emitted by the scanner. This stumping sound does not cause any inconvenience since the majority of patients have a tendency to relax and doze off during the procedure.

The duration is approximately 30 to 45 minutes on average.

Examples of images acquired with a CT-scan
exemple-tomodensitometrie-axialePre-surgical dental implant evaluation of the mandible and tracing of the right mandibular nerve in red.

mandibule-incidence-axial-Axial slice of the mandible and panoramic image planes

Example of Conebeam CT images
evaluation-articulations-temporo-mandibulaires-Temporomandibular joint evaluation by Conebeam CT

evaluation-topographie-osseusePre-surgical dental implant evaluation of the mandible with measurements of available bone and tracing of the left mandibular nerve.

asymetrie-faciale-3D image of facial asymmetry due to a hyperplastic left condyle

relation-dents-incluses-3D image of the upper and lower jaws for the evaluation of impacted teeth and their relation with the adjacent teeth.

des-lesions-complexe-maxillo-facialExtensive lesion in the les maxillary sinus and nasal fossa

Examples of MRI images

irm-condyle-et-disque-apparence-normaleNormal appearing condyle and articular disc position

Processus-degeneratif-articulation-temporo-mandibulaireSevere degenerative joint disease and anterior disc displacement

Preparation: None
When arriving for your appointment, make sure you have:
• The original request signed by your doctor.
• Your valid health insurance card and payment method for your exam, if applicable.
• The images on CD and copies of the reports of previous exams.

Please arrive 30 minutes early to receive a free parking coupon, available in front, and to check-in for your appointment.
Exam duration: About 30 minutes
Digital devices used: Siemens Biograph 16-detector system
Siemens Aera 1.5T
Siemens Avanto 1.5T
Imaging Siences International I-CAT Conebeam CT
Copy of images: upon request, images are copied onto a CD (no charge for the first copy; $10 for each additional copy).
Bone assessment for dental implant
Click on $ to view the price
Upper OR lower mandible 395 $
Upper AND lower mandible 495 $
Temporomandibular articulations MRI 650 $
CD First copy is free
CD $10 for each additional copy
Report copy  fist copy is free
Report copy  $5 for each additional copy
Prices subject to change without notice
In addition to your doctor’s request, please send us your contact information, along with the file number and the name of the agent who is handling your case. We must have authorization for the examination before scheduling your appointment.
Our Services
Magnetic resonance imaging (MRI)
Computerized axial tomography (scan, scanner, CT)
Positron emission tomography (PET-CT)
Virtual colonoscopy
Digital mammography
Musculoskeletal imaging
Ultrasound and Doppler
General radiology
Specialized radiology
Bone densitometry
Bone assessment for dental implant