Panoramic radiography in dentistry

AbstractPanoramic radiography is an extraoral radiography modality that provides two-dimensional information about the teeth and the maxillofacial skeleton. It is a valuable adjunct for diagnosis and treatment planning as it facilitates one-time imaging of all teeth, the mandible, parts of maxilla including a large part of the maxillary sinus, hard palate and temporomandibular joints (TMJs). As a tomographic image is prone to errors and artefacts, a good quality radiograph in most patients can be achieved by following the standard rules and through proper patient positioning. In this article, we will discuss indications for panoramic radiography imaging, steps in taking the radiograph, as well as limitations, pitfalls and complications of the procedure. Tomographic imaging of temporomandibular joint is also discussed.

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Panoramic radiography for temporomandibular joint arthrography: A description of arthropanoramograms

Oral Surgery Oral Medicine Oral Pathology ◽

10.1016/0030-4220(89)90023-6 ◽

1989 ◽

Vol 67 (6) ◽

pp. 775-780

Author(s):

Kenneth Abramovitch ◽

Robert P. Langlais ◽

M.Franklin Dolwick

Keyword(s):

Temporomandibular Joint ◽

Panoramic Radiography

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Panoramic radiography is of limited value in the evaluation of maxillary sinus disease

Oral Surgery Oral Medicine Oral Pathology and Oral Radiology ◽

10.1016/j.oooo.2018.10.005 ◽

2019 ◽

Vol 127 (3) ◽

pp. 237-246 ◽

Cited By ~ 2

Author(s):

Sarah Constantine ◽

Bruce Clark ◽

Andreas Kiermeier ◽

Professor Peter Anderson

Keyword(s):

Maxillary Sinus ◽

Panoramic Radiography ◽

Sinus Disease

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A Morphometric Analysis of Intra-articular Disc of Temporomandibular Joints in Cadavers

JOURNAL FOR CLINICAL AND DIAGNOSTIC RESEARCH ◽

10.7860/jcdr/2021/45438.15224 ◽

2021 ◽

Author(s):

Pratik Ashokkumar Agrawal ◽

Navin S Shah ◽

Ramnarayan A Gandotra ◽

Karan Vasantray Panchal ◽

Rishabh Navin Shah

Keyword(s):

Temporomandibular Joint ◽

Anatomic Variation ◽

Maxillofacial Surgery ◽

Temporomandibular Joint Disorders ◽

Research Centre ◽

Oral And Maxillofacial Surgery ◽

Articular Disc ◽

Chi Square ◽

Temporomandibular Joints ◽

Human Cadavers

Introduction: Temporomandibular Joint (TMJ) has been a controversial topic in Oral and Maxillofacial Surgery speciality especially regarding temporomandibular joint disorders and internal derangement of articular disc. The aetiology behind it has been related to the anatomic variations of the disc and its impact on the functioning of the articular disc. To understand such anatomic variation, the study has been conducted that will help future maxillofacial surgeon’s in designing accurate prosthetic articular disc that will improve the overall mechanics of the functioning of the prosthetic disc. Aim: To analyse the morphometric variations of the intra-articular disc in terms of circumference of the disc, perforations and their thickness within the disc in cadavers. Materials and Methods: The present observational study was carried out on cadavers in the Department of Anatomy. SBKS Medical College and Research Centre, Sumandeep Vidyapeeth University, Gujarat, India. The study was done from January 2017 to October 2018. Temporomandibular joints were dissected bilaterally from 10 human cadavers, i.e., 20 articular discs. The disc was removed and was measured with the help of thread, vernier callipers and standardised metallic scale and the circumference and thickness in the disc were evaluated. Descriptive statistical test was used and Chi-square test was applied. Results: Mean thickness of disc, both in males as well as females ranged from 1.4-2.0 mm in the Posterio-Medial (PM) and Posterio- Lateral (PL) region, while in Anterio-Medial (AM) and Anterio- Lateral (AL) region it ranged from 1.6-1.8 mm. Maximum length of disc ranged from 12-13 mm in anterio-posterio dimension while in Medio-Lateral (ML) it was 22-23 mm. Conclusion: The study gives an indepth knowledge about the various morphometric variations of articular disc and also shows its impact on the functioning of the disc. The study also directs maxillofacial surgeons to design prosthetic articular disc with greater accuracy and anatomical knowledge so that the procedures like surgical replacement of the disc can be carried out with greater potency and efficacy for the betterment of the patient.

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Temporomandibular Joint Imaging

Advances in Medical Technologies and Clinical Practice - Handbook of Research on Clinical Applications of Computerized Occlusal Analysis in Dental Medicine ◽

10.4018/978-1-5225-9254-9.ch009 ◽

2020 ◽

pp. 582-697

Author(s):

Mark Piper, DMD MD

Keyword(s):

Magnetic Resonance ◽

Soft Tissue ◽

Temporomandibular Joint ◽

Mr Images ◽

Anatomical Structures ◽

Temporomandibular Joints ◽

Key Concepts ◽

Masticatory System ◽

The Relationship ◽

Insight Into

Computerized tomography (CT) and magnetic resonance (MR) imaging of the temporomandibular joint are often not a routine part of a dental patient's pain and clinical evaluation. As a result, the most poorly understood region within the masticatory system is the temporomandibular joint foundation. Unfortunately, patient care and occlusal management are often compromised because of a lack of insight into the relationship between the anatomy of the temporomandibular joints and the occlusion. This chapter's four distinct sections review the key concepts about the temporomandibular joint foundation anatomical structures, detail structurally intact and structurally altered temporomandibular joint anatomy, clarify how structurally altered temporomandibular joints influence occlusal function, and classify the stages of temporomandibular joint structural degeneration. The concept of joint-based malocclusion is explored with numerous temporomandibular joint foundation anomalous software renderings, and sample CT and MR images, which together illustrate in detail how soft tissue and bony abnormalities in a structurally altered temporomandibular joint can create distortions in the occlusion. Lastly, the chapter addresses the specific requirements a clinician must technically master to perform a comprehensive CT or MR examination.

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Accuracy of panoramic radiography in diagnosing maxillary sinus-root relationship: A systematic review and meta-analysis

The Angle Orthodontist ◽

10.2319/022018-135.1 ◽

2018 ◽

Vol 88 (6) ◽

pp. 819-829 ◽

Cited By ~ 1

Author(s):

Wentian Sun ◽

Kai Xia ◽

Li Tang ◽

Chenlu Liu ◽

Ling Zou ◽

...

Keyword(s):

Computed Tomography ◽

Maxillary Sinus ◽

Panoramic Radiography ◽

Positive Likelihood Ratio ◽

Display Type ◽

Type I ◽

Type Ii ◽

Root Tips ◽

Type Iv ◽

Good Ability

ABSTRACT Objective: To investigate the accuracy of panoramic radiography (PR) in diagnosing maxillary sinus-root relationships (SRRs). Materials and Methods: PubMed, EMBASE, CENTRAL, Web of Science, ScienceDirect, CBM, Baidu Scholar, and SIGLE were searched. The studies comparing the diagnostic accuracy of PR and computed tomography/cone-beam computed tomography (CT/CBCT) for SRR were included. Results: Eleven studies were included. Meta-analyses showed that, for type I SRR, PR had the highest specificity, positive likelihood ratio (+LR), diagnostic odds ratio (DOR), and area under the curve (AUC), with a high sensitivity and a low negative LR (−LR). For type IV, PR had a high DOR and AUC, with the highest sensitivity but a low +LR, the lowest –LR, and the lowest specificity. For type II, PR had the lowest AUC, with a low sensitivity, +LR, and DOR and a high −LR. For type III, PR had the lowest sensitivity, +LR, and DOR and the highest −LR. The distance from root tips to the maxillary sinus floor on PR was significantly longer (mean difference: −1.88 mm; 95% confidence interval: −2.19 to −1.57; P < .0001) than that on CT/CBCT. Conclusions: Currently available evidence suggests PR could be reliable for detecting type I SRR. PR has a good ability to confirm true type IV SRR but a poor ability to rule out false type IV SRR. For type II and III SRR, PR shows poor accuracy and tends to overestimate the extent of protrusion of the roots into the maxillary sinus. When PRs display type II, III, or IV SRR and related treatment is needed, CBCT should be used for further examinations.

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