| 1. |
- Lindh, Christina, et al.
(författare)
-
Mandibular cortical index for osteoporosis diagnosis : the OSTEODENT project
- 2006
-
Konferensbidrag (refereegranskat)abstract
- Objectives: to determine the diagnostic validity of the mandibular cortical index (MCI) for the diagnosis of osteoporosis in peri- and post-menopausal women. Methods: Volunteer female subjects in the 45 to 70 year age band, recruited from four European centres, underwent dual x-ray energy absorptiometry of the hip and lumbar spine, to provide a gold standard diagnosis of osteoporosis, and a DPR examination. Five observers, all oral radiologists but of different experience, made an assessment of porosity of the cortex of the lower border of the mandible using MCI. Results: Data of 661 subjects (mean age 54.8y; sd = 6.19y) were available for analysis, with 140 (21.2%) being classified as having osteoporosis. MCI data for each observer were dichotomosed so that MCI grade 3 indicated a positive test result and grades 1 and 2 a negative test result. The sensitivities and specificties of MCI for osteoporosis diagnosis were determined: Osteoporosis at any site Osteoporosis at femoral neck Observer Sensitivity (%) Specificity (%) Sensitivity (%) Specificity (%) 1 24.8 93.3 27.3 91.3 2 23.4 93.2 24.2 91.3 3 23.4 91.5 24.2 89.8 4 20.6 99.8 22.7 91.8 5 19.1 91.1 22.7 90.3 Interobserver repeatability (using weighted Kappa) showed a range of 0.183 to 0.780, with a median value of 0.467. This median indicated moderate agreement. Conclusions: MCI had low sensitivity but high specificity for diagnosis of osteoporosis. This high specificity might prove to be more appropriate for use in primary dental care than using a different diagnostic threshold. This work was supported by a research and technological development project grant from the European Commission FP5 'Quality of Life and Management of Living Resources' (QLK6-2002-02243).
|
|
| 2. |
- Lindh, Christina, et al.
(författare)
-
Tooth loss and osteoporosis
- 2006
-
Konferensbidrag (refereegranskat)abstract
- Objectives: To test the relationship between the number of existing teeth (3rd molars and impacted teeth excluded) and the Bone Mineral Density (BMD). Methods: The study entailed perimenopausal and postmenopausal subjects (age 45-70 years). The BMD at three different sites (standardized total hip t-score, standardized femoral neck t-score and standardized lumbar spine t-score) was measured using DXA. The subjects received a panoramic radiograph and their medical history was evaluated. The number of existing teeth was calculated using the panoramic radiographs and the relation between the BMD and the number of existing teeth in different age groups of the subjects was examined.The equation introduced by Taguchi et al (1995) for calculating the probability of osteoporosis using two variables (age and number of existing teeth) Pv =1/(1+e-z) was also applied and assessed. Results: Data of 178 subjects (mean age 54,38 y; sd =6,32y) were available for analysis. Patients with a standardized t-score value less than -2.5 at any of the three sites were classified as osteoporotic. Those with a score above this were classified as normal or osteopenic. When osteoporosis was diagnosed at any of the three sites, there were fewer existing teeth (mean 18,47 ,95% CI;15,89 to 21,05) compared with normal (mean 21,24, 95% CI; 19.96 to 22,53) and osteopenic subjects (mean 19,97 95% CI;18,58 to 21,37). The results approaches statistical significance. Conclusions: It seems that there is a relationship between the number of remaining teeth and BMD.This work was supported by a research and technological development project grant from the European Commission FP5 'Quality of Life and Management of Living Resources' (QLK6-2002-02243).
|
|
| 3. |
- Horner, K, et al.
(författare)
-
Basic principles for use of dental cone beam computed tomography : consensus guidelines of the European Academy of Dental and Maxillofacial Radiology
- 2009
-
Ingår i: Dento-Maxillo-Facial Radiology. - : British institute of radiology. - 0250-832X .- 1476-542X. ; 38:4, s. 187-195
-
Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: To develop "basic principles" on the use of dental cone beam CT by consensus of the membership of the European Academy of Dental and Maxillofacial Radiology.METHODS: A guideline development panel was formed to develop a set of draft statements using existing European directives and guidelines on radiation protection. These statements were revised after an open debate of attendees at a European Academy of Dental and Maxillofacial Radiology (EADMFR) Congress in June 2008. A modified Delphi procedure was used to present the revised statements to the EADMFR membership, utilising an online survey in October/November 2008.RESULTS: Of the 339 EADMFR members, 282 had valid e-mail addresses and could be alerted to the online survey. A response rate of 71.3% of those contacted by e-mail was achieved. Consensus of EADMFR members, indicated by high level of agreement for all statements, was achieved without a need for further rounds of the Delphi process.CONCLUSIONS: A set of 20 basic principles on the use of dental cone beam CT has been devised. They will act as core standards for EADMFR and, it is hoped, will be of value in national standard-setting within Europe.
|
|
| 4. |
|
|
