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CBCT scan procedures for the imaging guide or prosthesis

When imaging is needed with the imaging guide, the double imaging technique is essential for patients with complete tooth loss and those with metal restorations or fillings near the implant site. Metal fillings and crowns can cause scattering in CBCT imaging, leading to inaccuracies in the patient’s X-ray results.
Preparation for imaging guide or prosthesis:
Every successful implant procedure, from simple to complex, starts with a well-designed imaging guide that transforms desired or existing restorations into the final restoration before surgery.
 

FILM SHOOTING GUIDE

Design a film guide trough with a prototype restoration (copy a model from the patient’s own denture or make a new denture) The following are important factors:
  • Teeth are chosen in the correct position.
  • Teeth are the right size, shape and length.
  • The bite is properly established.
  • No metal or radiopaque materials.
  • Thickness 2.5- 4mm
  • The plastic platform on the cheek is large enough to place the radiopaque marker and retain it well.
  • Fits closely to the patient’s anatomy.
Once you have finished making the film guide, place gutta percha or composite (contrast) in several positions. Contrast beads may be used. Recommended to use 6-8 points, with dimensions of 1.5-2.5 mm and spherical shape (not cylindrical and no special design required). Place 2-4 markers on the tongue side and 4 on the cheek side. Do not spread the markers evenly.

DENTURE USED AS A FILM GUIDE

The patient’s denture can be used as a guide for imaging. Before starting, check the denture according to the following criteria:
  • Teeth are the right size, shape and length. The bite is properly established
  • The plastic platform on the cheek is large enough to place the radiopaque marker and retain it well.
  • Only plastic base (no metal)
  • Fits closely and firmly to the patient’s jaw.
  • No radiopaque material or metal (e.g. metal jaws)
Once you have decided to use a denture, place 6-8 radiopaque points as a guide for taking a film.

PATIENT PREPARATION

  • Patients must have all metal restorations (e.g., metal brackets) removed as well as metal jewelry that could interfere with the area being imaged.
  • The patient’s bite is fixed on cotton or any non-opaque material.
  • Avoid using any radiopaque material that causes scattering, which can disrupt X-ray images.
  • The upper and lower teeth do not contact each other.
  • The distance between the two jaws is about 5-8mm
  • The patient is in a fixed position and must not move or swallow during the CBCT scan.

PATIENT INSTRUCTIONS WHEN SHOOTING WITH THE Trough

  • The denture or film guide must be sturdy and fixed in the mouth.
  • The chewing plane is balanced, not tilted.
  • The height must be fixed so that the center of the occlusal plane is in the field of view (FOV).
  • If both jaws need to be treated, take separate images for each jaw if the CBCT machine has a small FOV.

FILM CAMERAS SPECIFICATIONS

Use the manufacturer’s mode when taking dental films.
  • Slice thickness: 0.2-0.5 mm
  • Reset parameters: bone or high resolution
  • Tilt angle: 0 degrees

EXPORT DATA

  • Vertical slice data in DICOM format (format when the machine exports the file)
  • Data for each function is stored in two different data sets, along with data for each surgical guide (or denture) corresponding to that function.

Link to: Liên hệ

Do you need advice? Please contact us via the channels below.

Minh Son Medical Equipment Joint Stock Company

We are honored to be one of the leading units in the field of dental restorations in Northern Vietnam. Established from 2003 until now. Minh Son has developed and become a reputable and trustworthy supplier of dental restoration products, dental equipment and materials to customers.

Business information

MINH SON MEDICAL EQUIPMENT JOINT STOCK COMPANY | No. 40-41, Lot 27 Le Hong Phong, Dong Khe, Ngo Quyen, Hai Phong

Contact information:

Phone: +84 989 055 296
Email: labduong@gmail.com

Manager:

Ms. Duong

Address:

No. 40-41 Lot 27 Le Hong Phong, Dong Khe, Ngo Quyen, HP

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