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Panoramic Radiography

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https://www.readbyqxmd.com/read/29781451/comparisons-of-the-computed-tomographic-scan-and-panoramic-radiography-before-mandibular-third-molar-extraction-surgery
#1
Qian Luo, Wanglun Diao, Lan Luo, Yong Zhang
BACKGROUND Mandibular third molar extraction surgery has a postoperative complication of hypoesthesia of the lower lip and/or chin. The objective of the study was to determine if preoperative radiographic examination by panoramic radiography and computed tomography (CT) scan can predict postoperative complications of mandibular third molar extraction surgery. MATERIAL AND METHODS In total, 479 patients who had mandibular third molar extraction surgery were included in this cross-sectional study. Patients had panoramic radiographies and CT scans to determine the relationship of the tooth, the canal, and the buccolingual position...
May 21, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29748039/comparing-panoramic-radiographs-and-cone-beam-computed-tomography-impact-on-radiographic-features-and-differential-diagnoses
#2
Li Zhen Lim, Ricardo J Padilla, Glenn J Reside, Donald A Tyndall
OBJECTIVES: The aims of this study were to determine whether lesion features appear differently on panoramic radiography (PAN) and cone beam computed tomography (CBCT), and whether the use of CBCT affects diagnostic accuracy and observers' confidence in comparison with PAN. STUDY DESIGN: Three oral and maxillofacial radiologists reviewed 33 sets of PAN images and CBCT images of biopsy-proven lesions. They described 12 different lesion features and provided up to 3 ranked differential diagnoses, as well as their confidence with respect to those diagnoses...
April 17, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29722543/effective-dose-reduction-using-collimation-function-in-digital-panoramic-radiography-and-possible-clinical-implications-in-dentistry
#3
Daniel Benchimol, Nils Kadesjö, Juha Koivisto, Xie-Qi Shi
OBJECTIVES: The primary aim was to evaluate the effective dose for a full size panoramic image and nine different panoramic protocols using collimation. The secondary aim was to estimate possible reduction of effective dose in clinical situations. METHODS: Effective dose, according to International Commission on Radiological Protection (ICRP) 2007, were determined for a full size panoramic image and nine different panoramic protocols applying collimation on an anthropomorphic Rando phantom, using metal-oxide semiconductor field-effect transistor (MOSFET) dosimeters...
May 3, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/29672880/enamel-renal-syndrome-case-report
#4
Luiz Henrique Soares Torres, Sérgio Lins de-Azevedo-Vaz, Danielle Resende Camisasca Barroso, Daniela Nascimento Silva, Tânia Regina Grão Velloso, Liliana Aparecida Pimenta de Barros
AIMS: to describe a case in which dental changes were observed and investigation proceeded to consider Enamel-Renal-Syndrome (ERS), a rare disorder that associates amelogenesis imperfecta with nephrocalcinosis. CASE REPORT: an 11-year-old male patient upon intraoral examination revealed generalized gingival hyperplasia, a few teeth were absent clinically and the remaining ones were yellowish-brown in color. The enamel alterations were suggesting of amelogenesis imperfecta...
April 19, 2018: Special Care in Dentistry
https://www.readbyqxmd.com/read/29670725/association-of-liver-enzyme-levels-and-alveolar-bone-loss-a-cross-sectional-clinical-study-in-sado-island
#5
Ayumi Kuroki, Noriko Sugita, Shigeki Komatsu, Akio Yokoseki, Akihiro Yoshihara, Tetsuo Kobayashi, Kazutoshi Nakamura, Takeshi Momotsu, Naoto Endo, Kenji Sato, Ichiei Narita, Hiromasa Yoshie
Background: The interaction of periodontopathic bacteria with host immune system induces the production of inflammatory mediators which leads to alveolar bone loss (ABL), the essential feature of periodontitis. Concurrently, periodontal diseases cause the elevation of blood cytokine levels, the alteration of gut microbiota and the dissemination of enterobacteria to the liver. Owing to these mechanisms, periodontal disease might be a risk for liver dysfunction. Several epidemiological studies have reported associations between periodontal diseases and liver dysfunction, although the association between ABL and liver dysfunction has not been investigated...
February 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29618893/role-of-panoramic-imaging-and-cone-beam-ct-for-assessment-of-inferior-alveolar-nerve-exposure-and-subsequent-paresthesia-following-removal-of-impacted-mandibular-third-molar
#6
Sonali Ghai, Sankarsan Choudhury
Objectives: Pre-operative radiographic evaluation of impacted mandibular third molar and inferior alveolar canal (IAC) is important in preventing a possible nerve exposure and damage during surgical removal. The present study analysed the relation of the mandibular third molar with inferior alveolar canal using panoramic radiography (PAN) and cone beam CT (CBCT) and evaluated the radiographic features suggestive of IAN exposure and post-operative paresthesia. Materials and Methods: PAN and CBCT findings of 53 impacted mandibular third molars having a close relation with IAC undergoing extraction were analysed...
June 2018: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/29602348/reliability-and-validity-of-mandibular-posterior-vertical-asymmetry-index-in-panoramic-radiography-compared-with-cone-beam-computed-tomography
#7
Young-Sub Lim, Dong-Hwa Chung, Jin-Woo Lee, Sang-Min Lee
INTRODUCTION: The purposes of this study were to compare the asymmetry index using panoramic radiography and cone-beam computed tomography for detecting mandibular posterior asymmetry and to evaluate the diagnostic value of the asymmetry index on panoramic radiography. METHODS: A total of 43 patients were included in this study. Ten mandibular posterior distances were measured using panoramic radiography and cone-beam computed tomography, and 10 asymmetry index values were calculated...
April 2018: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29561656/correlation-between-panoramic-radiography-and-cone-beam-computed-tomography-in-assessing-maxillary-impacted-canines
#8
Cuc Thi Thu Ngo, Leonard S Fishman, P Emile Rossouw, Hongyue Wang, Omar Said
OBJECTIVE: To determine the usefulness of panoramic radiographs in determining the labio-palatal position of maxillary impacted canines (MICs) and root resorption of permanent incisors on cone-beam computed tomography (CBCT) in correlation with the mesiodistal position of MICs on panoramic radiographs. MATERIALS AND METHODS: This retrospective radiographic study reviewed 64 patients with 86 MICs. Subjects were divided into two groups: group I (<15 years old) and group II (>15 years old)...
March 21, 2018: Angle Orthodontist
https://www.readbyqxmd.com/read/29535965/comparison-of-accuracy-between-panoramic-radiography-cone-beam-computed-tomography-and-ultrasonography-in-detection-of-foreign-bodies-in-the-maxillofacial-region-an-in-vitro-study
#9
Mehrdad Abdinian, Maedeh Aminian, Samad Seyyedkhamesi
Objectives: Foreign bodies (FBs) account for 3.8% of all pathologies of the head and neck region, and approximately one third of them are missed on initial examination. Thus, FBs represent diagnostic challenges to maxillofacial surgeons, rendering it necessary to employ an appropriate imaging modality in suspected cases. Materials and Methods: In this cross-sectional study, five different materials, including wood, metal, glass, tooth and stone, were prepared in three sizes (0...
February 2018: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29525926/detection-accuracy-of-maxillary-sinus-floor-septa-in-panoramic-radiographs-using-cbct-as-gold-standard-a-multi-observer-receiver-operating-characteristic-roc-study
#10
A C Lang, R K Schulze
OBJECTIVES: To investigate diagnostic accuracy of panoramic radiography in detecting maxillary sinus floor septa by means of a multi-observer receiver operating characteristic (ROC) analysis and a standardized protocol for reporting (STARD protocol; Clin Chem 49(1):1-6, 2003). MATERIAL AND METHODS: From our database, 25 cone beam computed tomographies (CBCTs) were selected with one maxillary sinus floor septum (height ≥ 2.5 mm). For the same patient, a recent panoramic radiograph (PAN) had to be available in the database...
March 10, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29525294/bifurcation-of-the-inferior-dental-nerve-canal-an-anatomical-study
#11
N P Shah, L Murtadha, J Brown
The aims of this study were to find the incidence of bifurcation of the inferior dental nerve (IDN) canal, to describe the characteristics of this variant, and to examine the sensitivity and specificity of dental panoramic tomography to identify it. We classified bifurcations by size and position relative to the main canal and the lower third molar using cone-beam computed tomography (CT) and dental panoramic tomography. In our study of 281 patients, 106 (38%) had bifurcations, and in one quarter, these were classified as large accessory canals...
May 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29521748/delayed-diagnosis-of-gorlin-goltz-syndrome-the-importance-of-the-multidisciplinary-approach
#12
Jéssica Araújo Figueira, Fábio Roberto de Souza Batista, Karina Rosso, Vanessa Cristina Veltrini, Angelo José Pavan
Gorlin-Goltz syndrome (GGS), also known as nevoid basal cell carcinoma syndrome, is an autosomal dominant inherited disorder with high penetrance and variable expressivity. The classic triad originally described by Gorlin and Goltz in 1960 is composed of multiple nevoid basal cell carcinomas (NBCCs), odontogenic keratocysts (OKCs) in the jaws and bifid ribs. in 1977, this triad was modified by Rayner et al, and to GGS diagnosis, the OKCs had to appear in combination with calcification of the cerebellar falx or palmar and plantar pits...
March 8, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29513241/the-influence-of-dental-implants-in-periapical-and-panoramic-radiographs-and-cone-beam-computed-tomography-images-a-clinical-study
#13
Rafael Perdomo Felix, Rosemary Sadami Arai Shinkai, Maria Ivete Bolzan Rockenbach
The aim of this study was to analyze the influence of dental implants on the radiographic density of the peri-implant region in tomographic and radiographic examinations. A sample of 21 dental implants from 10 patients with Brånemark-protocol prostheses was evaluated based on postoperative control images, including periapical radiography (paralleling technique), panoramic radiography, and cone beam computed tomography (CBCT). The density means of 6 defined areas near dental implants were calculated and compared considering their locations and the different imaging examinations...
March 2018: General Dentistry
https://www.readbyqxmd.com/read/29496811/dental-students-interpretations-of-digital-panoramic-radiographs-on-completely-edentate-patients
#14
Richard J Kratz, Caroline T Nguyen, Joanne N Walton, David MacDonald
The ability of dental students to interpret digital panoramic radiographs (PANs) of edentulous patients has not been documented. The aim of this retrospective study was to compare the ability of second-year (D2) dental students with that of third- and fourth-year (D3-D4) dental students to interpret and identify positional errors in digital PANs obtained from patients with complete edentulism. A total of 169 digital PANs from edentulous patients were assessed by D2 (n=84) and D3-D4 (n=85) dental students at one Canadian dental school...
March 2018: Journal of Dental Education
https://www.readbyqxmd.com/read/29487645/bilateral-coronoid-hyperplasia-causing-painless-limitation-of-mandibular-movement
#15
Maryam Ghazizadeh, Mahnaz Sheikhi, Mohammad Mahdi Salehi, Amin Khaleghi
The coronoid process is a beaklike process in the ramus of the mandible. Coronoid process hyperplasia (CPH) is a rare possible cause of reduced mouth opening. An overgrown process interferes with mandibular rotation and lateral excursion and hence leads to restricted mouth opening (RMO). Although some factors are suggested, etiology of CPH is not completely known. Prescription of suitable radiography is necessary for an accurate diagnosis. This article reports a 30-year-old man with bilateral CPH and progressive RMO since childhood...
February 2018: Radiology Case Reports
https://www.readbyqxmd.com/read/29448262/assessment-of-location-of-the-mandibular-canal-correlation-between-panoramic-and-cone-beam-computed-tomography-measurements
#16
Felix Bertram, Stefan Bertram, Ansgar Rudisch, Rüdiger Emshoff
PURPOSE: To compare panoramic and cone beam computed tomography (CBCT) determinations of implant-to-mandibular canal (MC) dimensions in mandibular regions posterior to the mental foramen and to investigate whether factors such as gender, age, region, and vertical dimension influence correlation between the two techniques. MATERIALS AND METHODS: A retrospective analysis was carried out in 64 consecutive adult patients (42 females, 22 males; average age 57.1 ± 13...
February 15, 2018: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29433530/correlation-between-lumbar-intervertebral-disc-height-and-lumbar-spine-sagittal-alignment-among-asymptomatic-asian-young-adults
#17
Feng Zhang, Kai Zhang, Hai-Jun Tian, Ai-Min Wu, Xiao-Fei Cheng, Tang-Jun Zhou, Jie Zhao
BACKGROUND: To investigate the distribution and characteristics of the lumbar intervertebral disc height (IDH) in asymptomatic Asian population and to determine whether the lumbar IDH is related to the lumbar spine sagittal alignment. METHODS: A cohort of 169 cases of asymptomatic volunteers was enrolled from January 2014 to July 2016. All participants underwent magnetic resonance imaging of the lumbar spine and panoramic radiography of the spine. Panoramic radiographs of the spine were taken to evaluate pelvic incidence (PI), sacral slope (SS), and pelvic tilt (PT) using Surgimap® software...
February 12, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29433010/age-estimation-by-canines-pulp-tooth-ratio-in-an-iranian-population-using-digital-panoramic-radiography
#18
Mahdieh Dehghani, Elaheh Shadkam, Farzaneh Ahrari, Mahboobe Dehghani
OBJECTIVE: Age estimation in adults is an important issue in forensic science. This study aimed to estimate the chronological age of Iranians by means of pulp/tooth area ratio (AR) of canines in digital panoramic radiographs. MATERIALS AND METHODS: The sample consisted of panoramic radiographs of 271 male and female subjects aged 16-64 years. The pulp/tooth area ratio (AR) of upper and lower canines was calculated by AutoCAD software. Data were subjected to correlation and regression analysis...
April 2018: Forensic Science International
https://www.readbyqxmd.com/read/29407509/reliability-of-different-radiographic-methods-for-the-localization-of-displaced-maxillary-canines
#19
Apostolos I Tsolakis, Michael Kalavritinos, Elias Bitsanis, Mattheos Sanoudos, Vassiliki Benetou, Konstantina Alexiou, Konstantinos Tsiklakis
INTRODUCTION: The purpose of this study was to evaluate the reliability of the radiographic images of the main conventional x-ray techniques compared with the information from cone-beam computed tomography (CBCT). METHODS: Twenty patients with unilateral or bilateral impaction of the maxillary canines had radiographic examinations by means of periapical x-rays, occlusal x-rays, panoramic x-rays, and CBCT scans. Three experienced orthodontists examined all x-rays from each patient and evaluated the radiographic images of the impacted canines...
February 2018: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29388826/assessment-of-impacted-and-partially-impacted-lower-third-molars-with-panoramic-radiography-compared-to-mri-a-proof-of-principle-study
#20
Barbara Kirnbauer, Norbert Jakse, Petra Rugani, Michael Schwaiger, Marton Magyar
OBJECTIVES: Third molars often require surgical removal. Since three-dimensional radiological assessment is often indicated in difficult cases to avoid surgical complications, the radiation burden has to be considered. Here, MRI may offer a dose-free alternative to conventional X-ray techniques. The aim of this retrospective analysis was to evaluate the assessment quality of MRI compared to panoramic radiography in impacted and partially impacted lower third molars. METHODS: Panoramic radiographs and MRI scans of 28 Caucasian patients were assessed twice by four investigators...
May 2018: Dento Maxillo Facial Radiology
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