engleski

Reproducibility of the obtained centric relation records in patients with disc displacement with reduction

Purpose: The purpose of this study was to investigate reproducibility of the position of the centric relation in patients with disc displacement with reduction. Materials and methods: Test group included 30 participants, diagnosed with disc displacement with reduction in right, left or both joints. Control group included 12 individuals with no signs and symptoms of temporomandibular disorders. Using chin point guidance with a jig, centric relation record was made three times by every participant, in a single session. Left and right condylar position for each centric relation record was determined and recorded using the electronic ultrasonic measuring device. Data were transferred to the computer, processed and analyzed. Condylar distances between centric relation records were measured (anteroposterior, vertical, transversal and linear values), and the data were statistically analyzed using the t and the F tests. Results: No statically significant difference was found between the test and the control groups. Two thirds of participants demonstrated condylar position of the repeated centric relation recording within the area of 0.3 mm in diameter. For more than 90% of participants that area was within 0.4 mm. Conclusions: There is no difference in reproducibility of the centric relation between patients with disc displacement with reduction and healthy temporomandibular joint individuals (p>0.05). When doing centric relation record on a patient with disc displacement with reduction there is no need for previous splint therapy and standard precautions are acceptable. Obtained results must be interpreted within the experimental group, and not projected on the other groups of temporomandibular disorders.

Temporomandibular joint ; Centric relation ; Temporomandibular disorders

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