Premium
Limited implication of initial bone scintigraphy on long‐term condylar bone change in temporomandibular disorders—Comparison with cone beam computed tomography at 1 year
Author(s) -
Jo Jung Hwan,
Bae Sungwoo,
Gil Joonhyung,
Oh Dongkyu,
Park Seoeun,
Cheon Gi Jeong,
Park Ji Woon
Publication year - 2021
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/joor.13209
Subject(s) - condyle , medicine , bone scintigraphy , cone beam computed tomography , temporomandibular joint , radiography , scintigraphy , dentistry , nuclear medicine , tmj disorders , radiology , orthodontics , computed tomography
Background The current diagnostic criteria for temporomandibular disorders (TMD) do not require imaging for the diagnosis of degenerative joint disease (DJD) of the temporomandibular joint (TMJ) condyle, and there is a lack of data investigating the effectiveness of imaging modalities in predicting long‐term TMJ DJD prognosis. Objectives To verify the association between initial bone scintigraphy results and long‐term DJD bone changes occurring in the TMJ condyle on cone beam computed tomography (CBCT). Methods Initial bone scintigraphy, panoramic radiography and CBCT results were analysed in relation to long‐term (12 months) TMJ DJD bone change on CBCTs in 55 TMD patients (110 joints). Clinical and radiographic indices were statistically analysed among three groups (improved, no change, and worsened) based on long‐term TMJ DJD prognosis calculated by destructive change index (DCI). Results Neither the uptake ratio nor visual assessment results from initial bone scintigraphy showed a significant difference according to long‐term condylar bone change groups. The cut‐off value of bone scintigraphy uptake ratio was 2.53 for long‐term worsening of TMJ DJD. Worsening of TMJ DJD was significantly associated with the diagnosis based on panoramic radiography ( p = .011) and CBCT ( p < .001). Initial DCI ( β = −.291, p = .046) had a significant association with long‐term worsening of TMJ DJD. Conclusion Initial bone scintigraphy results did not show sufficiently close associations with long‐term TMJ DJD prognosis. This should be considered in the selection process of imaging modalities for TMJ DJD patients. Future studies are needed to develop prognostic indices that comprise both clinical and imaging contents for improved predictive ability.