|3039 Internal derangement in horizontal and sagittal abnormal condylar angulation patients|
M. PREGARZ, Pederzoli hospital, Brescia, Italy, U. CONSOLO, Dental school University of Modena, Italy, P.L. FOGLIO-BONDA, dental clinic University of eastern piedmont, Novara, Italy, and C. BODIN, dental school University of Brescia, Italy|
In previous studies, the relationship between internal derangement and abnormal condylar angulation has been showed. Objectives:The aim of this study was to evaluate disc displacement (DD) in abnormal horizontal angulation (HA) of the condyle versus abnormal sagittal angulation (SA). We reviewed MRI of 44 Temporo-Mandibular Disorder (TMD) patients (10.6 yrs-71.1 yrs, mean age 34.7 yrs, sex ratio: M/F: 1/4) with abnormal condylar angulation. Methods:Abnormal condylar long axis angulation, was demonstrated in the axial plane, and compared to the coronal plane: we considered as normal a 10°- 20° angulation, as horizontal an under 10° angulation and as sagittal an over 35° angulation. Disc displacement without reduction (DDWR) and with reduction (DDR) were taken from sagittal and coronal MRI slices. Results:HA, found in 39 TMJ (19 bilateral and 1 unilateral abnormalities) out of 20 pts (10.6 yrs-51.7 yrs, mean age:29.6 yrs) was associated with DD in 34/39 TMJ (87.17%) [29 DDWR (74.35%), 5 DDR (12.82%)] and non-associated with DD in 5/39 TMJ (12.83%). SA, observed in 44 TMJ (20 bilateral and 4 unilateral abnormalities) out of 24 pts (37.3 yrs-71.1 yrs, mean age: 38.8 yrs) was associated with DD in 42/44 TMJ (95.45%) [15 DDWR (35.71%) and 27 DDR ( 64.28%)] and non associated in 2/44 TMJ (4.55%). The results showed a significant prevalence of DDWR associated with horizontal condylar angulation (p<0.001); a significant prevalence of DDR associated with sagittal condylar angulation (p<0.001) and demonstrated that the HA symptoms (mean age: 29.6yrs) breaks out before SA symptoms (mean age:38.8yrs). Conclusions:This finding suggests that more attention is needed for an early diagnosis and therefore treatments.
|Seq #275 - TMJ - Structure and Function II|
3:45 PM-5:00 PM, Friday, 8 March 2002 San Diego Convention Center Exhibit Hall C