A new classification proposal for sphenoid sinus pneumatization: a retrospective radio-anatomic study
ConclusionIn this study, sphenoid sinus pneumatizations were evaluated three-dimensionally with the help of CBCT, and a new classification suggestion was made to eliminate the classification confusion we encountered in our previous studies. Pneumatizations and variations can affect the field of operation and even change planning. It should be taken into account that the paranasal sinuses may have variations due to their surgical importance and their close association with many vital structures. (Source: Oral Radiology)
Source: Oral Radiology - July 22, 2020 Category: Radiology Source Type: research

The COVID-19 post-pandemic scenario to Oral Radiology at Dental Schools
(Source: Oral Radiology)
Source: Oral Radiology - July 18, 2020 Category: Radiology Source Type: research

Reducing metal artifacts between implants in cone-beam CT by adjusting angular position  of the subject
AbstractObjectivesTo reduce inter-implant metal artifacts in cone-beam CT (CBCT) imaging by adjusting angular position of the subject relative to the source –detector plane.Materials and methodsTwo dental implants were placed in a block made of homogeneous dental impression material. Using a custom-made apparatus, the specimen was scanned with a CBCT machine at seven different angles (0 °, 15°, 30°, 45°, 60°, 75°, and 90°) along three different spatial axes, yielding 21 experimental groups. Thirteen volumes of interest (VOI) including inter- and peri-implant areas were selected from each a...
Source: Oral Radiology - July 7, 2020 Category: Radiology Source Type: research

The practice of oral and maxillofacial radiology during COVID-19 outbreak
AbstractThe current coronavirus disease 2019 (COVID-19) outbreak has brought substantial challenges to the world health system, including the practice of dental and maxillofacial radiology (DMFR). DMFR will carry on an imperative role in healthcare during this crisis. This rapid communication has collected and evaluated all the best current evidence and published guidelines as well as professional recommendations to help maxillofacial radiologists and dental practitioners for safer radiological and imaging examinations on healthy, suspected, or confirmed COVID-19 patients during outbreak. Some strategies have been depicted...
Source: Oral Radiology - July 7, 2020 Category: Radiology Source Type: research

Cone-beam computed tomography evaluation of impacted and transmigrated mandibular canines: a retrospective study
AbstractObjectivesThe purpose of this study is to evaluate CBCT images of impacted mandibular canines in detail and to discuss implications for diagnosis and treatment.MethodsCBCT images of dental patients applied between December 2015 and December 2017 were evaluated retrospectively.  2591 CBCT images, including mandible in their field of view, were determined and evaluated regarding the presence of mandibular canine impaction. 66 impacted mandibular canines of 58 patients were analyzed in detail regarding their location, morphology, associated pathologies, and their relationsh ip with the neighboring anatomic struct...
Source: Oral Radiology - July 6, 2020 Category: Radiology Source Type: research

Evaluation of styloid chain calcification related to temporomandibular joint disc displacement: a retrospective cohort study
ConclusionOur results indicate that styloid-stylohyoid syndrome may be misdiagnosed with temporomandibular joint disorder (TMD).Trial registrationClinical Trials NCT04280107. (Source: Oral Radiology)
Source: Oral Radiology - July 6, 2020 Category: Radiology Source Type: research

Investigation of the effectiveness of CBCT and gray scale values in the differential diagnosis of apical cysts and granulomas
ConclusionThe presence of a well-defined cortical border or partial cortical border is a distinctive criterion for cysts. Additionally, the shape of the lesion was found to be a significant criterion for the separation of the two lesions. The shape of cystic lesions was circular and apical granulomas had a more curved shape. There was no relationship between the histopathological diagnosis of lesions and CBCT gray scale values. (Source: Oral Radiology)
Source: Oral Radiology - July 1, 2020 Category: Radiology Source Type: research

Actinomycotic osteomyelitis with proliferative periostitis arising in the mandibular ramus: an unusual case with spontaneous bone regeneration after coronoidectomy
We report a rare case of actinomycotic osteomyelitis with proliferative periostitis arising in the mandibular ramus and spontaneous bone regeneration after coronoidectomy. A 14-year-old girl was referred for swelling in the right parotid-masseteric region and severe trismus. Contrast-enhanced CT revealed that heterogenous enhancement of the right masseter muscle, and a reactive bone formation over the lateral cortex of the right mandibular ramus and osteolysis of the condyle were seen in plain CT. MRI showed that the mandibular ramus was a low-signal intensity and the reactive bone on the ramus was signal intensity similar...
Source: Oral Radiology - June 30, 2020 Category: Radiology Source Type: research

Imaging characteristics of Gubernacular Tract on CBCT- A pictorial review
AbstractThe Gubernaculum Dentis (GD) is an anatomical structure connecting the dental follicle of the permanent tooth to the overlying gingiva. It is composed of Gubernacular cord (GCo) and a surrounding bony canal called as Gubernacular canal (GC) or Gubernacular Tract (GT). GD is a physiologic structure that has claimed to play some role in the eruption of teeth. GCo is a histologic structure, however, the surrounding GT can be identified radiographically. But due to its infinitesimal appearance, its differentiation with normal bone marrow spaces on conventional radiographs is extremely difficult and is the reason for it...
Source: Oral Radiology - June 30, 2020 Category: Radiology Source Type: research

Dental radiographic procedures during COVID-19 outbreak and normalization period: recommendations on infection control
AbstractDental professionals have always been meticulous about infection control due to high risk of cross-contamination during dental procedures. Nevertheless, there is an urgent need to review and revise our current practice of infection control and develop more strict protocols that will prevent nosocomial spread of infection during COVID-19 outbreak and future pandemics. The risk of contamination is high during dental radiography if proper disinfection techniques are not applied. This document provides advice and guidance for infection control when practicing dental radiography during COVID-19 pandemic. (Source: Oral Radiology)
Source: Oral Radiology - June 29, 2020 Category: Radiology Source Type: research

Stafne ’s bone defect with bicortical perforation: a need for modified classification system
AbstractStafne ’s bone defect (SBD) or salivary gland-related bone defects are asymptomatic bone cavities in the mandible caused by impingement by the salivary glandular tissue. The major salivary glands, particularly the submandibular gland, are in close relation with the mandible and their impingement can prod uce radiolucent defects on the lingual cortical surface of the mandible. Submandibular gland-related bone defects or depressions are referred as posterior lingual variant of SBD. These are asymptomatic and appear as well-defined radiolucent areas that are incidentally discovered on panoramic radiogr aphs. Thr...
Source: Oral Radiology - June 22, 2020 Category: Radiology Source Type: research

Applying the paralleling technique in intraoral periapical radiographs for Japanese patients by analyzing CT images
ConclusionsWe concluded that the paralleling technique could not be applied in Japanese patients due to insufficient space for the image receptor in the upper maxilla region. (Source: Oral Radiology)
Source: Oral Radiology - June 20, 2020 Category: Radiology Source Type: research

Challenges for the dental radiology clinic in times of the COVID-19 pandemic
AbstractThis letter addresses the challenges for the dental radiology clinic in times of the COVID-19 pandemic. It highlights the use of teleradiography and mobile devices, as well as the proper care in disinfecting these equipments. As there are still no specific therapies for COVID-19, biosafety measures that promote containment and prevent the spread of the virus are crucial to stop the outbreak and control a possible new infectious peak. (Source: Oral Radiology)
Source: Oral Radiology - June 20, 2020 Category: Radiology Source Type: research

Role of dynamic sleep MRI in obstructive sleep apnea syndrome
ConclusionDynamic sleep MRI can reliably characterize the actual site of dynamic airway obstruction and has the potential of improving predictions of successful surgical outcomes in OSAS patients. (Source: Oral Radiology)
Source: Oral Radiology - June 18, 2020 Category: Radiology Source Type: research

Diagnosis of root fractures using cone-beam computed tomography: difference of vertical and horizontal root fracture
ConclusionsThe results suggested that the number of vertical root fracture was larger on non-vital tooth and that of horizontal root fracture was larger on vital tooth. The number of vertical root fracture was larger on premolar teeth. (Source: Oral Radiology)
Source: Oral Radiology - June 10, 2020 Category: Radiology Source Type: research

Cross-contamination and infection control in intraoral digital imaging: a comprehensive review
AbstractDental health care workers are subjected to various infectious disease agents that are present in patients ’ saliva and blood which make infection control and universal prevention methods indispensable to the dental practice given that some of these diseases cause loss of work and time for dental staff and patients; some of them cause serious morbidity; and some of them currently have a poor prognosis and no effective treatments. Although dental radiographic procedures are not invasive, and there are no incidents such as injuries caused by dental instruments, they are a potential infection source because of c...
Source: Oral Radiology - June 6, 2020 Category: Radiology Source Type: research

Automatic detection of cervical lymph nodes in patients with oral squamous cell carcinoma using a deep learning technique: a preliminary study
ConclusionsA system that has the potential to automatically detect cervical lymph nodes was constructed. (Source: Oral Radiology)
Source: Oral Radiology - June 6, 2020 Category: Radiology Source Type: research

Correction to: Preliminary study: evaluating the reliability of CBCT images for tongue space measurements in the field of orthodontics
In the original publication of the article the fourth author name was incorrectly published. (Source: Oral Radiology)
Source: Oral Radiology - June 3, 2020 Category: Radiology Source Type: research

Distant metastasis from oral cavity —correlation between histopathology results and primary site
ConclusionsWe found that the occurrence of DM from the primary site as well as rate of incidence was dependent on histopathological factors. (Source: Oral Radiology)
Source: Oral Radiology - May 28, 2020 Category: Radiology Source Type: research

MR and CT imaging features of sino-nasal organized hematomas
ConclusionWe conclude that MR and CT imaging findings can help in the diagnosis of OH. (Source: Oral Radiology)
Source: Oral Radiology - May 27, 2020 Category: Radiology Source Type: research

In reply to the letter to the editor concerning “Reliability of diagnostic imaging for degenerative diseases with osseous changes in the temporomandibular joint with special emphasis on subchondral cyst”
(Source: Oral Radiology)
Source: Oral Radiology - May 27, 2020 Category: Radiology Source Type: research

Reliability  of diagnostic imaging for degenerative diseases with osseous changes in the temporomandibular joint with special emphasis on subchondral cyst: methodological issue
(Source: Oral Radiology)
Source: Oral Radiology - May 27, 2020 Category: Radiology Source Type: research

Effect of CBCT dose reduction on the mandibular canal visibility: ex vivo comparative study
AbstractObjectivesTo compare the difference in mandibular canal (MC) visibility using three different cone beam computed tomography (CBCT) acquisition protocols: high resolution (HR), standard resolution (ST) and Quick scan+ (QS+).MethodsTwenty-five human dry mandibles were scanned by one CBCT machine; i-CAT FLX (Imaging Sciences International, Hatfield, PA, USA), using three different acquisition protocols: high-resolution (HR), standard (ST) and Quick scan+  (QS+). DICOM data were transferred to a third party software Ondemand 3D (Cybermed Co., Seoul, Korea). The fusion module was used to superimpose images derive...
Source: Oral Radiology - May 26, 2020 Category: Radiology Source Type: research

Schwannoma arising from the sublingual glandular branch of the lingual nerve radiologically masquerading as sublingual gland tumor
We report a rare case of schwannoma arising from the sublingual glandular branch of the lingual nerve radiologically masquerading as sublingual gland tumor. A 42-year-old female was referred to our department with a painless swelling in the left submandibular region. Contrast-enhanced computed tomography showed a well-circumscribed, heterogeneous low-density tumor with cystic change in the left sublingual region. Magnetic resonance imaging showed a well-circumscribed, heterogeneous sublingual tumor with low-signal intensity on T1-weighted image and high-signal intensity in T2-weighted image. The lesion was diagnosed radiol...
Source: Oral Radiology - May 21, 2020 Category: Radiology Source Type: research

Evaluation of motion artifacts in cone-beam computed tomography with three different patient positioning
ConclusionsPatient position is not related to MAs presence. The age of the patient is a factor in movement, and has a high impact in standing position. Although insignificant, MAs were less common in supine position than sitting and standing positions. Sitting and supine positioning might reduce motion artifacts in older patients. (Source: Oral Radiology)
Source: Oral Radiology - May 20, 2020 Category: Radiology Source Type: research

Sentinel lymph node mapping of clinically N0 early oral cancer: a diagnostic pitfall on CT lymphography
ConclusionsThe enhancement of SLNs in CTL images after iopamidol injection should be compared sufficiently with CT images before iopamidol injection to avoid overlooking of SLNs in N0 early oral cancer. (Source: Oral Radiology)
Source: Oral Radiology - May 17, 2020 Category: Radiology Source Type: research

Preliminary study: evaluating the reliability of CBCT images for tongue space measurements in the field of orthodontics
ConclusionsThe results of this preliminary study suggest that the landmarks chosen to measure the overall tongue space are reproducible and can be measured clearly using CBCT. (Source: Oral Radiology)
Source: Oral Radiology - May 16, 2020 Category: Radiology Source Type: research

Effect of total edentulism on the internal bone structure of mandibular condyle: a preliminary study
AbstractObjectiveThe aim of this study was to assess the internal structure of the mandibular condyles in patients with total edentulism by applying fractal analysis on cone-beam computed tomography (CBCT) images and compare with dentate subjects.MethodsA total of 136 mandibular condyles were assessed. All CBCT images were prepared with 0.25-mm slice thickness and maximum magnification. A 64  × 64 pixel region of interest (ROI) within the trabecular bone in the center of the condyle was selected. Fractal analysis was performed using White and Rudolph’s box-counting method.ResultsControl and study ...
Source: Oral Radiology - May 16, 2020 Category: Radiology Source Type: research

Radiation dosimetry analyses of radiographic imaging systems used for orthodontic treatment: comparison among child, adolescent, and adult patients
ConclusionsDental practitioners should be aware of patient age, as younger patients will incur greater risks from radiation. (Source: Oral Radiology)
Source: Oral Radiology - May 2, 2020 Category: Radiology Source Type: research

Computed tomographic features of synovial chondromatosis of the temporomandibular joint with a few small calcified loose bodies
ConclusionEminence/fossa osseous changes including extended sclerosis and erosion may be effective CT features for differentiating SC from TMD even when calcified loose bodies cannot be identified. (Source: Oral Radiology)
Source: Oral Radiology - April 18, 2020 Category: Radiology Source Type: research

Aplasia of maxillary tuberosity and hypertrophied pterygoid plates
(Source: Oral Radiology)
Source: Oral Radiology - April 7, 2020 Category: Radiology Source Type: research

An evaluation of the relationship between maxillary sinus anterior wall depression and maxillary sinus opacity by computed tomography and panoramic radiography
ConclusionsAnterior wall depression was found to be associated with both maxillary sinus opacity and the visibility of the innominate line. Patients with AWD should be considered as susceptible to maxillary sinus diseases. (Source: Oral Radiology)
Source: Oral Radiology - April 3, 2020 Category: Radiology Source Type: research

Development of flash cards to teach about lesions in the jaws and maxillary sinuses
ConclusionsThe learning content of our learning cards with QR codes was well received by students and was highly useful. (Source: Oral Radiology)
Source: Oral Radiology - April 3, 2020 Category: Radiology Source Type: research

Relationship between dental calcification of mandibular teeth and cervical vertebrae maturity in patients with unilateral complete cleft lip and palate
ConclusionThe results confirm the utility of the DCS on both sides of the mandible in male UCLP patients as a simple first-level diagnostic test to evaluate growth and development. The findings also indicate that both the DCS and the CVMS should be assessed if the maturity stage of a growing UCLP patient is relevant to clinical practice. (Source: Oral Radiology)
Source: Oral Radiology - April 2, 2020 Category: Radiology Source Type: research

Image quality of a portable X-ray device (Nomad Pro 2) compared to a wall-mounted device in intraoral radiography
ConclusionsA HH device delivers a comparable image quality to a WM device. In addition, there seem to be short learning curves with regard to image acquisition when using a handheld device, which is further minimised by the previous training of the operating personnel. HH dental X-ray devices, such as the Nomad Pro 2 are a promising adjunct for dental radiology in cases where WM units are of limited practicability. (Source: Oral Radiology)
Source: Oral Radiology - March 30, 2020 Category: Radiology Source Type: research

Analysis of the distribution of supernumerary teeth and the characteristics of mesiodens in Bengbu, China: a retrospective study
ConclusionsThe distribution of ST and mesiodens were both related to gender, and patients aged 6 –12 years were the most frequently detected. The length of the mesiodens was associated with the growth direction and mesiodens eruption. (Source: Oral Radiology)
Source: Oral Radiology - March 20, 2020 Category: Radiology Source Type: research

Acknowledgment to reviewers 2019
(Source: Oral Radiology)
Source: Oral Radiology - March 18, 2020 Category: Radiology Source Type: research

A graphical user interface for automated 2- or 3-dimensional image registration in dental treatment recovery planning: the DentIR application
ConclusionsThe free, user-friendly DentIR app was easily downloadable to Mac or PC platforms. It provided accurate image registration to aid in the planning of dental treatment. Future updates of the DentIR app include adding the ability to register more than two images at once, enhancing image editing options and enabling registration of a cropped portion of the image for more in-depth analyses. (Source: Oral Radiology)
Source: Oral Radiology - March 18, 2020 Category: Radiology Source Type: research

Imaging features of pharyngeal hairy polyps in infants
ConclusionHairy polyps had typical radiological features. Hairy polyps should be considered for pedicled polyp-like well-circumscribed mass in the oral-nasopharynx of infants with fat density or signal as well as a stalk. (Source: Oral Radiology)
Source: Oral Radiology - March 11, 2020 Category: Radiology Source Type: research

Usefulness of contrast-enhanced CT in the evaluation of depth of invasion in oral tongue squamous cell carcinoma: comparison with MRI
AbstractObjectivesThere is currently no standardized approach for assessing the depth of invasion (DOI) of oral tongue squamous cell carcinoma via diagnostic imaging. We investigated the usefulness of contrast-enhanced computed tomography (CECT) for estimating the pathological DOI of oral tongue squamous cell carcinoma by evaluating the correlation of pathological DOI with the DOIs on CECT and magnetic resonance imaging (MRI).MethodsWe retrospectively reviewed 21 of 139 patients who underwent radical surgery for primary oral tongue squamous cell carcinoma between 2009 and 2018. The 21 cases were evaluable, without dental a...
Source: Oral Radiology - February 21, 2020 Category: Radiology Source Type: research

Measuring the dose –width product and proposing the local diagnostic reference level in panoramic dental radiography: a multi-center study from Iran
ConclusionThe local DRL proposed in this study for the adult with standard/medium size was lower than those proposed by other reports and seemed acceptable for panoramic radiography in Kashan, Iran. (Source: Oral Radiology)
Source: Oral Radiology - February 17, 2020 Category: Radiology Source Type: research

The evaluation of lateral pterygoid signal intensity changes related to temporomandibular joint anterior disc displacement
AbstractObjectivesThe aim of this study was to evaluate lateral pterygoid muscle (LPM) signal intensity changes related to different degrees of disc status groups using magnetic resonance imaging (MRI).MethodsFour groups were established according to disc displacement of examined temporomandibular joint (TMJ) and opposing TMJ. MRI scans were obtained with a 1.5  T device. The signal intensity was measured from the sagittal slice where midportion of the muscle belly was observed. The regions of interest were placed over the superior and inferior heads of LPM. To normalize differences in signal intensity, signal intensi...
Source: Oral Radiology - February 12, 2020 Category: Radiology Source Type: research

Odontogenic keratocyst and ameloblastoma: radiographic evaluation
AbstractObjectivesTo describe the radiographic features of odontogenic keratocysts (OKCs) and ameloblastomas and to compare the radiographic findings between these 2 lesions.MethodsRadiographs of OKCs and ameloblastomas were retrospectively reviewed. Location, border, shape, association with impacted tooth, tooth displacement, root resorption, and bone expansion were evaluated. Chi-squared or Fisher ’s exact tests were used for statistical analysis. Ap value  
Source: Oral Radiology - February 6, 2020 Category: Radiology Source Type: research

Semi-automated three-dimensional volumetric evaluation of mandibular condyles
AbstractObjectivesThe aim of this study is to research the mandibular condyle volumes of the Turkish subpopulation by sex, age, laterality, and posterior occlusal support, to provide volumetric data for young and old patient groups.MethodsThe CBCT images of 690 condyles from 345 patients (165 females and 180 males) were assessed. Patients aged 18 –25 years were chosen for the younger group, and 45–70 years for the older group. The dental statuses of the older patient group were divided into three categories, based on the Eichner index. All the CBCT images were transferred to the three-dimensional volu...
Source: Oral Radiology - February 4, 2020 Category: Radiology Source Type: research

Invasive squamous cell carcinoma arising in an inverted papilloma involving oral cavity
AbstractInverted papilloma (IP) is a benign tumour characterized by the growth of epithelial cells downward into the underlying supportive tissue. The tumour derives from the lining mucosa of the nasal cavity and paranasal sinuses. IP typically arises as a unilateral lesion from the lateral wall of the nasal cavity and extends secondarily to the paranasal sinuses. The aggressive behaviour of IP causing local invasion, its tendency for local recurrence, and its propensity to be associated with carcinoma constitute serious complications. This paper describes a very rare case of IP associated with squamous cell carcinoma, ext...
Source: Oral Radiology - January 27, 2020 Category: Radiology Source Type: research

Evaluation of the mandibular trabecular bone in patients with bruxism using fractal analysis
ConclusionFractal analysis may be a useful method for discerning trabecular differences in the condylar areas of bruxer individuals. In future studies, the unilateral mastication habits, the characteristics of dental wear, and the occlusal bite forces of individuals should be documented. (Source: Oral Radiology)
Source: Oral Radiology - January 13, 2020 Category: Radiology Source Type: research

Is there a relationship between third-molar impaction types and the dimensional/angular measurement values of posterior mandible according to Pell & amp; Gregory/Winter Classification?
AbstractObjectiveThe aim of this study was to examine the relationship between ramus height, gonial angle and impaction classifications of mandibular third molars.MethodsA total of 829 mandibular third molars in 601 patient ’s orthopantomography (OPG) and cephalometric radiography records were evaluated. Gonial angle was measured on cephaloametric radiography and ramus height was measured on OPG. Impacted third molars were classified according to Pell& Gregory Vertical/Winter classification on OPG. The relationship between the impaction classifications and ramus height/gonial angle was evaluated.ResultsStatistica...
Source: Oral Radiology - January 11, 2020 Category: Radiology Source Type: research

Image screening for maxillo-mandibular actinomycosis with CT, 18 F-FDG-PET/CT, and 18 F- α-methyl tyrosine PET/CT
ConclusionsClinical and imaging findings of maxillo-mandibular actinomycosis are similar to those of intraosseous carcinoma. Differential diagnostic screening can confirm spotty-type bone resorption in cortical bone with CT and specific accumulation in malignant tumors with FAMT-PET/CT. This screening facilitates the rapid implementation of therapeutic interventions. (Source: Oral Radiology)
Source: Oral Radiology - January 10, 2020 Category: Radiology Source Type: research

The effect of selective serotonin reuptake inhibitors on the human mandible
AbstractObjectivesSelective serotonin reuptake inhibitors (SSRI) are a group of drugs that selectively and strongly block the serotonin transporter. Aim of this study was to evaluate the mandibular bone structure of patients who are using SSRIs with fractal analysis and panoramic morphometric indices [mandibular cortical width (MCW), panoramic mandibular index (PMI) and Klemetti index (KI)] and to compare with control group.MethodsPatients who declared using SSRIs for more than six months had been included in the study group. In total, 212 dental panoramic radiographs (DPR) were assessed. For fractal analysis; three region...
Source: Oral Radiology - January 2, 2020 Category: Radiology Source Type: research

Tooth detection and classification on panoramic radiographs for automatic dental chart filing: improved classification by multi-sized input data
ConclusionsThe proposed method can be useful in automatic filing of dental charts for forensic identification and preprocessing of dental disease prescreening purposes. (Source: Oral Radiology)
Source: Oral Radiology - January 1, 2020 Category: Radiology Source Type: research