Relationship Between Clinical and Magnetic
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123_Koh_Petersson.qxp 4/7/09 2:53 PM Page 123 Relationship Between Clinical and Magnetic Resonance Imaging Diagnoses and Findings in Degenerative and Inflammatory Temporomandibular Joint Diseases: A Systematic Literature Review Kwang-Joon Koh, DDS Aim: To describe evidence for a relationship between diagnoses Professor and findings of clinical examination and diagnoses and findings of Department of Oral and Maxillofacial magnetic resonance imaging (MRI) examination for degenerative Radiology and inflammatory temporomandibular joint diseases. Methods: School of Dentistry PubMed and the Cochrane Library were searched using specific Chonbuk National University indexing terms and reference lists were hand-searched. Included Korea publications satisfied pre-established criteria. Primary studies were Thomas List, DDS, Odont Dr interpreted using a modification of the Quality Assessment of Professor Diagnostic Accuracy Studies (QUADAS) tool. Results: The litera- Department of Stomatognathic ture search yielded 219 titles and abstracts. Eighty-two studies Physiology were selected and read in full-text. After data extraction and inter- pretation with the QUADAS tool, 23 studies remained. There was Arne Petersson, DDS, Odont Dr a vast heterogeneity in study design, clinical examination methods, Professor and diagnostic criteria. No clear evidence was found for a rela- Department of Oral and Maxillofacial tionship between clinical and MRI diagnoses and findings. Several Radiology studies reported a relationship between clinical pain and internal derangements diagnosed with MRI, but the calculated odds ratio Madeleine Rohlin, DDS, Odont Dr Professor (OR) for this relationship was generally low (1.54–2.04). ORs for Department of Oral and Maxillofacial the relationship between pain and disc displacement without Radiology reduction (4.82) or between crepitation and disc displacement without reduction (3.71) were higher. Conclusion: This review Faculty of Odontology reveals a need for studies with improved quality in reporting of Malmö University samples, examination techniques, findings, and definitions and SE-205 06 Malmö rationales for cutoffs, categories, and diagnoses. We recommend Sweden that standardized protocols such as the Research Diagnostic Criteria for temporomandibular disorders (RDC/TMD) and the Correspondence to: Standards for Reporting of Diagnostic Accuracy (STARD) state- Prof Arne Petersson ment be implemented in future studies. J OROFAC PAIN Faculty of Odontology Malmö University 2009;23:123–139 SE - 205 06 Malmö Sweden Key words: clinical examination, internal derangement, Fax: +46 40 6658549 magnetic resonance imaging, pain, Email: [email protected] temporomandibular disorders linical examination and an imaging technique are fre- quently applied together to diagnose temporomandibular Cdisorders (TMD). The clinical examination assesses mandibular range of motion and associated pain, joint sounds, and muscle and joint tenderness (through palpation). Some findings vary from one assessment to the next in the same individual since TMD can be a transient or recurrent condition. In 1992, Dworkin and LeResche proposed the Research Diagnostic Criteria (RDC) for TMD so that diagnostic categories would be standardized and replicated in clinical research.1 The RDC/TMD involves guidelines and procedures that allow examiners to achieve acceptable levels Journal of Orofacial Pain 123 123_Koh_Petersson.qxp 4/7/09 2:53 PM Page 124 Koh et al of inter-observer reliability with operationalized Medical Subject Headings (MeSH) Definitions of diagnostic criteria for investigating muscle pain, the Terms Used in the Literature Search disc displacements, and degenerative diseases of the temporomandibular joint (TMJ). • Temporomandibular Joint: An articulation An imaging examination is indicated when addi- between the condyle of the mandible and the tional information on a patient’s status is needed articular tubercle of the temporal bone. Year to substantiate results of the clinical examination introduced: 1997 to facilitate clinical decision-making. Because mag- • Magnetic Resonance Imaging (MRI): Non-inva- netic resonance imaging (MRI) defines hard and sive method of demonstrating internal anatomy soft tissue, this technique has gradually replaced based on the principle that atomic nuclei in a other imaging techniques in the examination of the strong magnetic field absorb pulses of radiofre- TMJ. MRI is reported to be the most accurate quency energy and emit them as radio waves, imaging technique for diagnosing the disc position which can be reconstructed into computerized of the TMJ2 and presents osseous changes of the images. The concept includes proton spin tomo- TMJ with high accuracy.3 A recent systematic lit- graphic techniques. Year introduced: 1988 erature review of the diagnostic efficacy of MRI found that evidence was insufficient and that high- Various definitions of pain (spontaneous, at rest, quality studies on the diagnostic efficacy of TMJ at motion, number of motions), tenderness on pal- imaging are needed.4 This review4 focused on stud- pation (at lateral pole, posterior aspects of TMJ), ies of MRI efficacy per se. Such studies are limited joint sounds (clicking, crepitus), and mouth open- because they do not mimic clinical practice: MRI ing capacity were the clinical findings used to of the TMJ is often performed after the clinical determine which studies were relevant for the examination and should underpin the results of the review. clinical examination. But some data indicate a dis- parity in the diagnosis and findings of the clinical Plan for Literature Search examination and the MRI examination.5,6 Therefore, the aim of this systematic literature Table 1 presents the indexing terms and limits review was to describe evidence for a relationship used in the search. Inclusion criteria were that the between clinical findings and diagnoses and MRI publication should describe (i) a clinical diagnosis findings and diagnoses in degenerative and inflam- or finding and an MRI diagnosis or finding in the matory TMJ diseases. Intended readers are clini- assessment of degenerative or inflammatory TMJ cians who treat patients with pain and dysfunction diseases and (ii) a relationship between diagnoses of the temporomandibular region, radiologists, or findings of a clinical examination and of MRI. and related field professionals. Exclusion criteria were studies that (i) reported clinical findings of muscle disorders, not TMD, (ii) reported laboratory findings instead of patient Materials and Methods clinical findings or MRI findings, (iii) investigated TMJ tumors, trauma, and synovial chondroma- This literature review used the systematic tosis, (iv) were case reports, and (v) evaluated other approach of Goodman7 and comprised these steps: TMJ imaging techniques such as arthrography, (1) problem specification, (2) formulation of a arthrotomography, arthroscopy, ultrasonography, plan for the literature search, (3) literature search and scintigraphy. and retrieval of publications, and (4) data extrac- tion, interpretation of data, and evaluation of evi- Literature Search and Retrieval of Publications dence from the literature retrieved. Table 1 illustrates the first step in the search of the Problem Specification PubMed electronic database. Two authors inde- pendently read the title and abstract of all publi- In the diagnosis of degenerative and inflammatory cations that matched the MeSH search terms. TMJ diseases: When at least one author considered a publication relevant, it was ordered and read in full-text. The • What is the evidence for a relationship between Cochrane Database of Systematic Reviews (the clinical and MRI diagnoses? Cochrane Library) was searched using the search • What is the evidence for a relationship between term “temporomandibular joint.” clinical and MRI findings? 124 Volume 23, Number 2, 2009 123_Koh_Petersson.qxp 4/7/09 2:53 PM Page 125 Koh et al The second step of the search was a hand-search Table 1 PubMed Search Strategy and Number of of the reference lists of publications included in the Retrieved Publications first step of the search as described in Fig 1. Reference lists of review articles were also hand- Indexing term Publications (n) searched. Titles were searched for those that con- #1 Temporomandibular joint [MeSH] 1,122 tained the terms (1) magnetic resonance imaging, #2 Magnetic resonance imaging [MeSH] 23,163 MR, or MRI together with temporomandibular #3 #1 AND #2 172 Publication date: 1988/01/01 to 2007/12/31. Database search date: joint or (2) words suggesting a clinical examina- 2007/12/31. tion method or clinical finding such as pain, Limits: (1) Adult subjects: 19+ years; (2) Items with abstract; (3) English; (4) Human; (5) Clinical trial, meta analysis, practice guideline, randomized mouth opening capacity, joint sound, clicking, or controlled trial, review, or comparative study. crepitus/crepitation together with temporo- mandibular joint. No publication date limits were specified in this step. The inclusion and exclusion criteria in the first step were used in the hand- search. Book chapters and reviews were excluded because the focus of the review was primary stud- PubMed search (n = 172 abstracts)A ies. Abstracts of the selected references were ordered. The publication was ordered in full-text Abstracts excluded (n = 108) when (1) there was no abstract or (2) at least one Agreement between two authors 78% author considered an abstract relevant. Full text publicationsB (n = 64) Data