Is CBCT scan necessary

What is a CBCT Scan and Why Do You Need One? - Chicago

Dental cone beam computed tomography (CT), also known as Cone Beam Computed Tomography (CBCT), is a type of dental x-ray equipment that takes panoramic 3D images of your teeth, gums, soft tissues, and nerve pathways in a single scan. The 3D images help our dentists at Capstone Dental diagnose problem areas more efficiently During the CBCT scan, the patient is instructed to keep the tongue away from the palate. By employing these techniques, dark areas corresponding to air space are created on the CBCT volume-enhanced visualization of the occlusal surfaces of denture teeth, tongue anatomy, and palate (Figure 15) Also, not every patient requires a CBCT scan; therefore, it is the dentist's responsibility to determine whether a CBCT scan is necessary by using reasonable, careful judgment in light of the patient's medical and dental history and thorough examination. The dentist should do a cost-benefit analysis before requesting a CBCT scan

Dentists tend to like CBCT. It creates crisp 3-D images of the jaw and teeth, including roots-very useful for complex problems like impacted teeth and braces. And kids actually like CT scan too because of what one orthodontist calls the wow factor. On the computer display, kids can see their entire skull in vibrant colors To answer the questions posed in the beginning: yes, CBCT may become standard of care for some therapies, but it is not necessary for every root canal treatment. CBCT is not a general screening tool. Doctors can be sued for not ordering a scan that would have circumvented injuries. They can also land in court for not documenting informed refusal

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CBCT is a faster and safer version of the regular x-ray. The use of a cone-shaped X-ray beam reduces the time needed for scanning. A full scan takes under one minute. The radiation dose is one hundred times less compared to a regular scanner One of the most important dental diagnostic innovations has been the advent of cone beam computed tomography, which has proven effective for many applications in oral health care. CBCT is a technology that is considered by some to be the standard of care where 3-D imaging is necessary in dentistry The question When is it appropriate to take a CBCT scan for implant placement? remained mostly unanswered. The author has encountered many different philosophies from colleagues, ranging from the opinion that CBCT is rarely needed to the idea that CBCT is essential for every implant case The answer is YES! One of the fastest growing demands in dental implant procedures is the utilization of CBCT scans. It provides the anatomical accuracy required for diagnosis, treatment planning, surgical execution and follow-ups for implant procedures

Treatment of Excessive Bony Growths (Exostosis / Tori) in

Why a CBCT Scan is Necessary Before a Dental Implan

CBCT is a mandatory imaging technique to prevent this serious complication. Prevent implant penetration into the sinus: CBCT provides an accurate picture of the maxillary sinus and its position in relation to the available bone The use of CBCT in endodontics is rapidly increasing. Deciding when a CBCT is clinically necessary is a subject that causes great debate among endodontists. As ionizing radiation is used, it is essential that exposures are kept as low as reasonably achievable CBCT or cone beam x rays are necessary for most lower extractions unless the tooth is already loose and can be visualized in the mouth. A treatment that is very helpful in better wisdom teeth and implant surgery healing is PRF in implants and wisdom teeth. CBCT cone beam scan necessary - yes to protect your nerves and arteries Is A CBCT Scan Necessary to Diagnose A Sinus Infection? A CBCT scan of the sinuses is typically not required for acute sinusitis, a short-term inflammation of the membranes. However, a CBCT scan may be important in the treatment of patients with chronic sinusitis, a sinus infection that persists for three months or longer Radiation dose evaluation is important to cone-beam computed tomography (CBCT) for routine orthodontic treatment planning, especially for a significant proportion of children in orthodontic patients

The Dental CBCT: Why You Need More Than a Standard X-Ra

  1. These advantages made CBCT, a valuable imaging device of choice in cases of trauma, pain and dysfunction, and fibro osseous ankylosis, as well as in the detection of condylar cortical erosion and cysts.21 The advanced 3D imaging features facilitates the safe application of the image-guided puncture technique, which is a treatment option for the.
  2. The benefits of a Dental CBCT scan are that it: Provides 3-D images of dental structures, soft tissues, nerve paths and bone which are considerably more detailed than conventional two-dimensional dental x-rays. Allows for more precise diagnosis and treatment planning. Is simple and comfortable to take and can diagnostically image both bone and.
  3. Integrated CBCT is also an important tool for patient positioning and verification in image-guided radiation therapy (IGRT). During dental/orthodontic imaging, the CBCT scanner rotates around the patient's head, obtaining up to nearly 600 distinct images
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  5. e the positioning of your teeth, their roots, and the bones in your face
  6. Radiographic guidelines also urge caution on the use of CBCT imaging, as this is a high dosage, and it may not be necessary. Interestingly, the authors declared an interesting conflict of interest. They are both on the Clinical Advisory Board of Smile Direct Club

The Dental CBCT: Why You Need More Than a Standard X-Ray

  1. An important basic requirement of using CBCT imaging as a diagnostic tool is that practitioners should have appropriate training to develop critical skills for operating CBCT equipment, managing imaging software, and acquiring a high level of competence and confidence in using and interpreting CBCT images
  2. Many dentists around the country seldom or never recommend CBCT (cone beam CT scan) I'm sorry I do not feel CTs are necessary. And expense and radiation can be avoided. I truly do have a 99% success rate these last 20 years, but admittedly conservative with avoiding immediate implants if possible, and adequate time for bone graft and.
  3. There are various reasons why you may be required to take a CT scan like diagnosis, surgery, among others. Cone Beam CT (CBCT) scanner vs. Traditional CT scanner. A CBCT scanner uses a cone beam radiating from an X-ray source in the shape of a cone covering large volume with one single rotation about the patient
  4. ary diagnostic tool, or for routine dental procedures suc
  5. CBCT machines have reduced in cost and some bigger dental practices have started keeping a dedicated CBCT machine as a part of their setup. Precautions you should take before a CBCT In order to get a clearer and more accurate image, you will be asked to take off any accessories like earrings, necklaces, spectacles, etc. prior to the scan

Video: Dental Cone-beam Computed Tomography FD

A dental CBCT scan offers the views and detail needed to perform the latest procedures, while avoiding the unnecessary higher levels of radiation emitted from hospital scans. As the technology continues to evolve, the possibilities for improved dental care can only increase. Increased software compatibility with surgical guides and orthodontic. Six examiners of varying levels of education and clinical experience performed the steps necessary for airway analysis, including manual orientation, slice and threshold selection and measured nasopharyngeal, oropharyngeal, hypopharyngeal and total upper pharyngeal airway volumes in addition to minimum cross-sectional area on the CBCT images of 10 patients Dental cone beam computed tomography (CT) is a special type of x-ray equipment used when regular dental or facial x-rays are not sufficient. Your doctor may use this technology to produce three dimensional (3-D) images of your teeth, soft tissues, nerve pathways and bone in a single scan. This procedure requires little to no special preparation In this way, CBCT machines are a great return on investment. A brief note about insurance coverage: So far, we have only seen one or two cases where a patient's dental insurance covered CBCT scans. Our office informs the patient that the cost of the scan will be completely out of pocket, but we will submit it to their insurance as a courtesy

To Scan or Not to Scan, That is the Question American

Cone-beam radiography is necessary for fabricating implant-placement guides (figure 4). Research on guided placement shows that placing an implant with a guide constructed from a cone-beam image is somewhat more predictable and acceptable than freehand placement. This is especially true for the placement of multiple implants (figure 5) Dental cone beam computerized tomography (ct scan) is used to provide an in-depth image, providing dentists with far greater detail than a regular dental x-ray. It can show your teeth, nerves, and bones in just a single scan, producing a detailed 3-D image. We don't routinely use cone beam CT scans Yes, the Dental CBCT scan is the only diagnostic method to be able to identify dental cavitation infections in the jaw otherwise also diagnosed as fatty degenerative osteonecrosis (FDOJ) or Ischemic Bone Disease (IBD). A 3D CBCT scan used by holistic dentists is the standard of care and the only dependable diagnostic tool to. While there are a number of units on the market that can reconstruct a cephalometric image from a cone beam computed tomography (CBCT) scan, these can take a toll on your workflow as well as introduce legal complications into your practice. Wise practitioners are implementing CBCT systems that give them the flexibility of both 2D and 3D imaging

3D Dental Cone Beam CT Scans: What Patients Need to Kno

Introduction. Cone-beam computed tomography (CBCT) is an imaging technique that acquires three-dimensional (3D) computed tomographic (CT) volumetric images in the angiography suite by using a fixed C-arm system equipped with a flat panel detector (1-4).Since its introduction a decade ago, the utility of CBCT has been demonstrated in multiple disease states including neurovascular disease. Accuracy of Cone-Beam Computed Tomography Versus Periapical Radiography Measurements When Planning Placement of Implants in the Posterior Maxilla: A Retrospective Study. Takahito Kakumoto, DDS; Adam Barsoum, BDS, DMD; and Stuart J. Froum, DD

Cone beam computed tomography (CBCT) is a developing technique that is being increasingly used in dentomaxillofacial imaging due to its relatively low-dose high-spatial-resolution characteristics. Research in TMJ imaging has been greatly inspired by the advent of CBCT Dental Cone Beam Computed Tomography (CT) is a special type of X-Ray machine used in situations where a traditional dental x-ray is not sufficient. It is also used as diagnostic imaging to find pathology of the jaw bones and surrounding structures. This type of CT scanner uses a special type of technology to generate three dimensional (3-D. CBCT is an x-ray imaging technique similar to a medical CT scan but utilizes a mere fraction of the radiation. The entire scan is accomplished in seconds and does not require confinement in an enclosed area, which is a concern to some. A CBCT scan generates a 3-D image of bone and provides information such as bone height, width, density, shape. If the scan isn't necessary or emits the wrong dose of radiation, the risks far outweigh the benefits. Radiation risk 101 CT scans can expose you to as much radiation as 200 chest X-rays

Do we need a radiographic guide? A review of the cone-beam

A CBCT scan, provides visualization of root number & anatomy, canal number & morphology, much more accurate evaluation of peripical tissues. Understanding the advantages of CBCT, the limited radiation and limited liability associated with a focus field CBCT, I would suggest that the benefits routinely outweigh the potential risks The net result is that you lose the ability to superimpose images of your patients who started treatment before the incorporation of CBCT unless you maintain your ability to take a standard 2D ceph. Decreased Legal Liability. In order to construct a cephalometric view from a CBCT imaging system, the patient's anatomy is scanned in 3D For CBCT scans 3 rd party datagrabber software can also transfer the pano images. The PreXion patient scans can be accessed by any intra-office PC (client PC's). No additional dongles or licenses are necessary and can be added to new computers later on as well

Understand legal issues when using CBCT scans - Dental

  1. The study also concluded the lead apron offered close to a 93% reduction in the radiation exposure to the female chest. 4 CBCT provides an effective dose higher than traditional two-dimensions imaging and, on average, the effective dose ranges from 84 µSv for a small field of view to 212 µSv for a large field of view. 5 When comparing these.
  2. Cone beam computed tomography is garnering interest among dental sleep medicine practitioners. Here's what you need to know about this imaging capability. Priced at roughly $100,000 on average, cone beam computed tomography (CBCT) machines are a significant investment. But they are remarkable tools for imaging the head and neck
  3. Like other X-ray imaging exams, CT scans expose you briefly to a small, targeted amount of ionizing radiation. The radiation helps create an image of structures inside your body. CT scans provide more-detailed images of more types of tissue than traditional X-rays do, which allows your doctor to detect and locate many medical conditions.. CT scans have various purposes

What a CBCT Scan is and Why it is Essential in Endodontics Cone Beam Computed Tomography, or CBCT, is a type of medical imaging technique that has become increasingly vital to dentistry over the past decade, and especially within the field of endodontics. The important thing to know about CBCT imaging is that, unlike traditional [ The average cone beam CT, without insurance, will cost anywhere between $250 and $600. If your dental or health insurance covers the cost of a regular CT or x-ray, it may also cover the cost of a CBCT. If so, you will only be responsible for the deductible or co-pay. According to Charlotteoralsurgery.com, a cone beam scan costs approximately $395

CBCT stand for Cone Beam Computed Tomography (tomo means slices). The CBCT machine is a safer, faster and more compact version of the regular CT-scan machines found in hospitals and imaging centers. The CBCT scan takes approximately 15-20 seconds to scan the desired area. As a result, the CBCT delivers a much lower amount of radiation as. Background and purpose: This study explores methods to reduce dose due to kV-CBCT imaging for patients undergoing radiation therapy. Material and methods: Doses resulting from kV-CBCT scans were calculated using Monte Carlo techniques and were analyzed using dose-volume histograms. Patients were modeled as were CBCT acquisitions using both 360° and 200° gantry rotations 3D CBCT Imaging. C-Dental offers focused, small and large view CBCT scans with a simple and affordable pricing structure. Our NewTom VGi CBCT is the only machine with SafeBeam™ technology, which adjusts the radiation dosage according to the patient's size. If playback doesn't begin shortly, try restarting your device Cone beam computed tomography (CBCT) The guide is worn during a CBCT scan, and that data is imported into the implant planning software, where corrections to the planned trajectory and 3D position are made to the final in-office guide to be created. Review of the steps necessary to follow this treatment option were discussed and the.

Objectives: Images derived from cone beam computed tomography (CBCT) scans lack detailed information on the dentition and interocclusal relationships needed for proper surgical planning and production of surgical splints. To get a proper representation of the dentition, integration of a digital dental model into the CBCT scan is necessary. The aim of this study was to validate a simplified. The award winning i-CAT Cone-beam computed tomography (CBCT) systems provide two dimensional images and three-dimensional volume reconstructions of the head area which includes ENT and maxillofacial areas for use in planning and diagnostic support in adult and pediatric care . The time needed for a standard CBCT scan with an i-CAT™ is. Cost: compared to a medical CT scan, a CBCT scan can cost up to 50% less Level of exposure: typically more than 2D X-rays, but less than a medical CT scan As with traditional X-rays, CBCT scans will only be recommended when necessary, and there are standard procedures in place to minimize your exposure to radiation 3D imaging is vital for some dental procedures and extremely valuable in others. Many patients will seek coverage of the imaging from their medical plans. Therefore, dentists must understand the intricacies of submitting CBCT imaging claims with the proper billing codes to increase the likelihood of coverage

Dental X-Rays and Cone-beam CT scans Your Organic Chil

The aim of this case report is to present two cases where cone beam computed tomography (CBCT) was used for the diagnosis, treatment planning, and followup of large periapical lesions in relation to maxillary anterior teeth treated by endodontic surgery. Periapical disease may be detected sooner using CBCT, and their true size, extent, nature, and position can be assessed A computed tomography (CT) scan is a diagnostic imaging method in which a computer is used to generate a three-dimensional image of an object using a series of two-dimensional X-ray image slices taken around a single axis of rotation. Cone beam refers to the type of x-ray projectio A normal X-ray can't measure bone depth, thickness or density. 3D CBCT scans measure all three, plus the depth of bone near your nerve canals and sinus cavities. All of this information is presented to your dentist in a 3D view. Using a 3D dental CBCT scan and examining the images from every direction helps your dentist to accurately plan the. 2. Cone-beam technique. The CBCT scanners for maxillofacial region were introduced in the 1990s independently in Japan [] and in Italy [].Although it has been given several names including dental volumetric tomography (DVT), cone-beam volumetric tomography (CBVT), dental computed tomography (DCT), and cone-beam imaging (CBI), the most preferred name is cone-beam computed tomography (CBCT) [] Cone beam computed tomography is a 3D medical imaging technique that uses traditional X-ray computed tomography but spreads the X-rays out in a cone shape (hence the name). This allows the dentist to get a more complete model of a patient's face, jaw, and teeth

OVERVIEW. Cone-beam computed tomography (CBCT) scans generate multiple projections that are immediately processed into 3-D images. The images can be transferred online or sent on CD, along with the radiology report. The clinic is open to the public. To schedule an appointment, call 734-764-2700 In implant dentistry, three-dimensional (3D) imaging can be realised by dental cone beam computed tomography (CBCT), offering volumetric data on jaw bones and teeth with relatively low radiation doses and costs. The latter may explain why the market has been steadily growing since the first dental CBCT system appeared two decades ago. More than 85 different CBCT devices are currently available. in CBCT scans (i.e., multiclass segmentation). In this study, we aimed to train and validate a mixed-scale dense (MS-D) convolutional neural network for multiclass segmentation of the jaw, the teeth, and the background in CBCT scans. Thirty CBCT scans were obtained from patients who had undergone orthodontic treatment In addition to the cone-beam scanner, there is also concern about the safety of X-rays taken during annual visits to the dentist. Despite a national campaign to reduce radiation levels to those absolutely necessary for proper imaging, many dental offices are still using outdated X-ray machines that emit more radiation than the newer machines Combine 3Shape X1® CBCT, panoramic scans, 3D face scans and 3Shape TRIOS® intraoral scans to create 360° digital views of your patient for improved diagnostics, treatment planning, and communication with patients and partners. The X1 offers super fast scanning and sharp image quality. The Movement Correction algorithms adjust even the.

CBCT: The New Standard of Care? American Association of

  1. The CBCT scan is very necessary for the correct placement of implants. SPECIALS. All-on-4 Implants. We specialize in state-of-the-art Megagen dental implants for individual teeth or full-mouth reconstructions. Many services can be completed in one day! ALL ON 4. Affordable Dentistry
  2. Cone Beam Computed Tomography (CBCT) is a diagnostic imaging modality that provides high-quality, accurate three-dimensional (3D) representations of the osseous elements of the maxillofacial skeleton. CBCT systems are available that provide small field of view images at low dose with sufficient spatial resolution for applications in endodontic diagnosis, treatment guidance, and posttreatment.
  3. Medicover's dentistry now has access to one of the world's most advanced, multi-award winning (Cellerant Class of Technology, Edison Awards) dental CT and panoramic X-ray equipment, the premium CBCT device, with which most CT and X-ray scans are done worldwide.CT combines traditional two-dimensional panoramic technology and CBCT (Cone Beam CT) imaging to create personalized imaging along with.
  4. Cbct. A constant beam of radiation during the rotation allows contineous exposure to the patient but not contribute to the formation of image . One manufacturer has expanded the scan volume height by software addition of two rotational scans to produce a single volume with a 22cm height.otherwise it is difficult to incorporate craniofacial.
  5. CBCT which stands for Cone Beam Computed Tomography is a type of x-ray machine that gives a detailed 3D image compared to conventional x-rays. This CT scanner can clearly generate realistic images of dental structures, soft tissues, nerve paths and bones in the craniofacial region in just a single scan
Anterior maxilla alveolar ridge dimension and morphologyCollaborative Endodontics and Restorative Dentistry

CBCT studies, like conventional X-Rays, expose you to radiation. The amount of radiation you will be exposed to by the CBCT scanner used by DC Imaging, L.L.C. varies depending upon your age, weight and bone density, thereby allowing the lowest dose necessary to provide quality images Volumetric Images At A Low Dose. The Future Of X-Ray. Our Digital Systems Offer The Latest In GE Imaging Advantages Cone beam computed tomography (CBCT), also known as digital volumetric tomography (DVT) , volumetric computed tomography (VCT), or cone beam three-dimensional imaging (CB3D) , is a relatively new technology in the field of oral and maxillofacial radiology, but it is rapidly becoming established as the radiological technique of choice in. CBCT images to interpret the findings of the examina-tion. Just as a pathology report accompanies a biopsy, an imaging report must accompany a CBCT scan. Practitioners who operate a CBCT unit, or request CBCT imaging, should have thorough understanding of the indications for CBCT as well as a familiarity wit Cone Beam Computed Tomography (CBCT) scan is a diagnostic imaging method in which a computer is used to generate a three-dimensional image of an object using a series of two- be considered medically necessary when criteria are met. 07/14/15 Annual Review. Guidelines reviewed with no change to policy content

Proponents say CBCT offers extremity imaging advantages to both patients and providers over traditional CT. For patients, the advantage is ease of access. For providers, the advantages are improved diagnostic capabilities, workflow, and productivity. At some CBCT providers, patients can undergo the necessary imaging in a single visit Field of view refers to the area of the anatomy that is captured by the CBCT scan. Most practitioners placing dental implants are interested in acquiring data from the maxilla and mandible. The standard fields of view can be used to capture the temporomandibular joint complex, the paranasal sinuses, as well as the maxilla and mandible.. With the development of cone beam CT scans designed for private dental offices, patients could have the necessary radiographic imaging with a ten-fold decrease in radiation exposure (compared to the medical scan) and not have to schlep elsewhere. Sounds like a giant leap forward in the delivery of care, right? Not so fast

Cone-beam computed tomography (CBCT) is being increasingly used for head, neck and dentomaxillofacial imaging. There is growing interest in CBCT from all fields of dentistry because it has created a revolution in maxillofacial imaging. It has caused transition of dental imaging from 2D to 3D images and has expanded the role of imaging from just diagnosis to image guidance of operative and. It was recommended to use a panoramic radiograph to decide whether a CBCT scan is necessary. We recommended CBCT scanning in individual patients judged to require a cross-sectional image after reading of a panoramic X-ray image and a conventional intra-oral radiological image. 6, 9 More specifically, a cross-sectional image after panoramic. The rest of the time, he says, CT guided surgery is a luxury that he does not recommend to patients. Factoring in the CBCT scan, designing the guide, and production expenses, the average additional cost of using a surgical guide for an implant surgery is approximately $1,000, Levin says, though some others put that number slightly lower Appropriate use of CBCT by acquiring CBCT only when necessary has the potential to reduce ionizing radiation exposure to orthodontic patients. Generally, the risks of CBCT in orthodontics are outweighed by the benefits that CBCT scans provide in selected cases in which conventional radiographs cannot provide sufficient information necessary for. Images derived from cone beam computed tomography (CBCT) scans lack detailed information on the dentition and interocclusal relationships needed for proper surgical planning and production of surgical splints. To get a proper representation of the dentition, integration of a digital dental model into the CBCT scan is necessary. The aim of this study was to validate a simplified protocol to.

Trauma - CBCT scans can be used for imaging trauma. Fractured Mandible and Orbit Report & Image Portfolio; Implants - Complete 3D views of critical anatomy for more thorough analysis of bone structure and tooth orientation to optimize implant treatment and placement and selection of the most suitable implant type, size, location, and angulation prior to surgery 3D x-rays are used often for dental implant treatment. They help me increase the safety and precision of your dental implant surgery. 3D x-rays are often called CT scans, 3D scans, or cone beam scans. This can be done at an x-ray lab or at my office in Burbank. Cone beam 3D scans are extremely safe and have very little radiation. In my office, I have a very technologically advanced machine. The daily application of cone-beam computed tomography (CBCT) has been increasing. Not only the number of referrals has been raising, but also the variety of the anatomical regions requested for imaging is also growing in the dentomaxillofacial area. Even though computed tomography (CT) has been widely used in the head and neck region, by the invention of CBCT, some of the drawbacks of CT were.

The increased use of cone-beam computed tomographic (CBCT) scans has made it increasingly necessary to evaluate incidental findings on CBCT scans. This report describes the case of a 66-year-old female patient who presented to the Department of Oral and Maxillofacial Pathology, Radiology and Medicine at the College of Dentistry of the author's. Conebeam scans create highly accurate 3-D images of the patient's anatomy from a single, low-radiation scan. CBCT technology delivers a comprehensive understanding of the patient's jaw and the anatomical structures necessary to properly provide implant treatment

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Cone Beam Computed Tomography (CBCT) (dental cone beam or cone beam) is a new technology similar to CAT scans in that it will give us a 360 degree 3 dimensional view of the area we are examining. Previously, we were limited by dental X-rays, even digital dental X-rays, to a two dimensional picture of a three dimensional problem Cone Beam Computed Tomography (CBCT) is an X-ray imaging technology where a large number of 2D images are taken of a patient from diff erent angles. A 3D volumetric image is then calculated from these 2D projections. The resulting images can be viewed with our advanced imaging software from any angle, including the axial, coronal, sagittal and. Can the Excelsior scan for TMJ scans? Yes in either wide modes with a 15cm width which will also display the dental arches. In addition, there is a scan mode that targets just the right and left TMJ condyle joints and only one scan is necessary. The software will display the right and left sides separately Additional CBCT scans were acquired when deemed necessary. Radial EBUS (r-EBUS) was not used in any case. Tissue samples were obtained using one or multiple biopsy tools, including a standard cytology brush, fine needle for aspiration (21 and 19 G), biopsy forceps, GenCut core biopsy tool (Medtronic), single and triple needle cytology brush. For a second CBCT scan, which is then used for selecting the therapeutic position, the patient should carefully bite on a white 5mm George Gauge bite fork with registration material or a MATRx bite block which brings him in a therapeutic position. Are two 3D scans necessary to order an OPTISLEEP appliance single CBCT scan using a eld of view (FOV) necessary to assess the entire dentofacial area has an eective dose between 36 and 1073 µSv [6]. is eective dose is 5, higher than the eective dose of digital PAN (23 µSv) [7] and digital lateral cephalometric (4.5 µSv) [8] skull views