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  • 1
    Electronic Resource
    Electronic Resource
    Recognition of internal derangements (2004)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 31 (2004), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary  One of the most common symptoms of temporomandibular disorders is an internal derangement (ID). The aim of this study was to test the inter-observer reliability of the recognition of IDs by means of auscultation, palpation or both. To that end, 120 women and 100 men were screened by two trained examiners for the presence of IDs. Anterior disc displacement was diagnosed in 14% of the cases and hypermobility in 12%. In 4% of the cases, the ID was classified as ‘other’. The inter-rater reliability (Cohen's kappa) was moderate for the presence of an ID for all techniques, while for the classification into type, an almost perfect reliability was found for the combined technique. It was concluded that the type of ID can best be established with the combination of auscultation and palpation; for the establishment of an ID as such, any of the three techniques would suffice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.2004.01317.x
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  • 2
    Electronic Resource
    Electronic Resource
    Kinematics of the human mandible for different head postures (2000)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 27 (2000), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The influence of head posture on movement paths of the incisal point (IP) and of the mandibular condyles during free open–close movements was studied. Ten persons, without craniomandibular or cervical spine disorders, participated in the study. Open close mandibular movements were recorded with the head in five postures, viz., natural head posture, forward head posture, military posture, and lateroflexion to the right and to the left side, using the Oral Kinesiologic Analysis System (OKAS-3D). This study showed that in a military head posture, the opening movement path of the incisal point is shifted anteriorly relative to the path in a natural head posture. In a forward head posture, the movement path is shifted posteriorly whereas during lateroflexion, it deviates to the side the head has moved to. Moreover, the intra-articular distance in the temporomandibular joint during closing is smaller with the head in military posture and greater in forward head posture, as compared to the natural head posture. During lateroflexion, the intra-articular distance on the ipsilateral side is smaller. The influence of head posture upon the kinematics of the mandible is probably a manifestation of differences in mandibular loading in the different head postures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.2000.00518.x
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  • 3
    Electronic Resource
    Electronic Resource
    The clinical assessment of TMJ sounds by means of auscultation, palpation or both (2002)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 29 (2002), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Anterior disc displacements are an important diagnostic subgroup (Group II) of TM disorders according to the Research Diagnostic Criteria (RDC; Dworkin & LeResche, 1992). Although the RDC yields clear-cut criteria for the diagnosis of a disc displacement, the interobserver reliability for the clinical recognition of joint sounds is highly variable. This high variance may be caused by the fact that the clinical assessment of joint sounds is difficult. In many previous studies, auscultation with a stethoscope was used. This technique is often claimed to be the most reliable one. However, it is unclear whether in these studies, auscultation was performed without simultaneous palpation of the contralateral joint. Therefore, the aim of the present study was to test the interobserver reliability of the clinical assessment of TMJ sounds by means of auscultation, palpation or both. A total of 220 undergraduate students (100 men; 120 women; mean age 21·9 ± 3·6 years) was examined independently by two calibrated dentists for the presence, probable presence or absence of sounds caused by anterior disc displacement, hypermobility, or another cause. The 79 students underwent auscultation only (i.e. without contralateral manual palpation); 87 students underwent bilateral palpation; the remainder (54 students) was subjected to both auscultation and palpation. The results show that the combination technique yields the highest reliability (Cohen's κ=0·53). For other techniques, κ-values of 0·46 (auscultation) and 0·48 (palpation) were found. It was concluded that the combination of auscultation and palpation yields the highest interobserver reliability for the recognition of TMJ sounds, although the differences with other techniques were small. (Supported by the IOT)
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.2002.01026_5.x
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  • 4
    Electronic Resource
    Electronic Resource
    Variation in masticatory muscle activity during subsequent, submaximal clenching efforts (2002)
    Oxford UK : Blackwell Science Ltd
    Journal of oral rehabilitation 29 (2002), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In previous studies to the relative contribution of the jaw closing muscles to the maintenance of submaximal clenching levels, a considerable variation in the electromyography (EMG) activities of these muscles during subsequent efforts was found. In this study, it was examined to what extent this variation could be explained by coincidental variations in mandibular positioning. From seven healthy individuals, a total of 90 EMG sweeps was recorded: three conditions (intercuspal position and two types of stabilization appliances) × three clenching levels (10, 30 and 50% of maximum voluntary contraction level) × 10 repetitions. Mandibular position was monitored with a six degrees of freedom opto-electronic jaw movement recording system. Variations in mandibular positioning during subsequent, submaximal clenching efforts explained up to 25% of the variance in the indices that quantify the relative contribution of the jaw closing muscles to the total clenching effort (P=0·000; ANOVA). Only a weak dependency of positioning upon clenching condition was found whereas during higher clenching levels, the positioning effect tended to be smaller than during lower levels. In conclusion small, coincidental variations in mandibular positioning during subsequent clenching efforts partly explain the variance in EMG activity of jaw closing muscles, especially at lower clenching levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.2002.00892.x
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    Paper (German National Licenses)
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