TMD is a group of pathological changes including increased tension in the masticatory muscles, pain in the muscles and/or the temporomandibular joints, abnormal range of the mandibular movement or the presence of acoustic symptoms in the joints in the form of clicking or poping. The aim of the project was to compare the effectiveness of two methods of physiotherapeutic rehabilita-tion, used in adolescent patients with temporomandibular disorders.
Material and Methods: The material consisted of 68 patients, aged 14 to 17, of both sexes, generally healthy, who came to the Dental Prosthetics Department for treatment due to pain in the masticatory muscles. Dental examination and diagnostics revealed Ia in all cases in accordance with RDC/TMD protocol. Manual therapy was performed in group I (34 people) and kinesitherapy with massage was performed in group II (34 people). Patients were allocated randomly to both groups. Contraindications were considered for both methods.
Results: Within the first study, mean values of pain intensity between group I and group II were not significantly different (6.12 and 6.24 respectively). Within the second study significantly lower VAS scores in both groups have been revealed (0.92 and 0.74 respectively). Results of the first and second study differed significantly in both groups. Similar results were obtained for the maximum abduction of the mandible.
Conclusions: The results of the conducted studies indicate a beneficial effect of the assessed phy-siotherapeutic procedures in terms of functional rehabilitation of adolescent patients with temporoman-dibular disorders.

Introduction: Dentin hypersensitivity is a painful clinical condition. The frequency of its occurrence varies from 8 to 57%, depending on tested group and different methods of investigations. Recommended desensitizing agents have different mechanism of action and effectiveness. We are still looking for solutions that will improve their effectiveness and simultaneously allow for wider use of e.g. as a base material, counteracting postoperative hypersensitivity, reducing marginal microleakage. The aim of the study was to assess the effect of a selected desensitizing agent occluding dentin tubules with calcium hydroxyapatite on marginal microleakage formation of a class V composite restorations subjected to thermocycles.

Materials and Methods: In study it was used 40 molars and premolars, which were alternately assigned into two groups. In both groups standardized cavities were prepared. In the study group (study group — SG) before application of bonding agent Teethmate Desensitizer (f. Kuraray, Noritake Dental Inc., Okayama, Japan) was used. In the control group (control group — CG) OptiBond All-in-one (f. Kerr, Bioggio, Switzerland) bonding agent was used and cavities were filled using composite material Gradia Direct (f. GC Europe N.V., Leuven, Belgium). After storage in saline, teeth were subjected to 600 thermo-cycles, passive dye penetration test was done, teeth were cut in the area of filling, according to its long axis. Under light microscope magnification value of microleakage was measured and marginal microleakage rate (M) was counted. The results of the tests were statistically analyzed using the package STATISTICA 12.0 (StatSoft, USA).

Results: The average value of M for the SG group was 0.46 (min 0.05, max 0.76, SD 0.226) and for CG was 0.22 (min 0, max 0.74, SD 0.235). The differences between M values were statistically significant (p = 0.0094).

Conclusion: A reduction in the number of retention sites for the bonding system, facilitates the formation of microleakage in the experimental conditions and reduces the degree of adhesion of the composite material to the hard tissues of the tooth.