Propolis, known also as bee glue, is a wax-cum-resin substance which is created out of a mix of buds from some trees with the substance secreted from bee's glands. Its diverse chemical content is responsible for its many precious salubrious properties. It was used in medicine already in ancient Egypt. Its multiple applications during the centuries have been studied and described in details. The purpose of this study is to present the possible use of propolis in treatment of various diseases of oral cavity in their dental aspect. The paper presents properties and possible applications of bee glue depending on dental specialities. An overview of publications which appeared during the recent years will allow the reader to follow all the possibilities to apply propolis in contemporary dentistry.

Temporomandibular joint derangement is a common disorder of the stomatognathic system. One type of these disorders is disc displacement without reduction with limited mouth opening, characterized by pain in affected TMJ and a decreased range of mouth opening. The natural course of closed lock is self-limiting. However, if there is no significant improvement after 12 weeks of following natural course of disc displacement without reduction, this is an indication that the therapy should be implemented. The article presents a review of the most commonly applied methods of basic conservative closed lock treatment. The most commonly applied methods of closed lock conservative management are: education and counseling, mandibular manipulation, splint therapy, exercise therapy and pharmacotherapy. The first choice method of treatment should be minimally invasive. The surgical management should be considered after unsuccessful conservative therapy. All presented methods of closed lock treatment seem to be effective in decreasing pain and reestablishing physiological range of motion (Adv Clin Exp Med 2015, 24, 4, 731-735).Key words: TMD, closed lock, conservative treatment. Internal derangement in temporomandibular joint (TMJ) is a common dysfunction of the stomatognathic system. According to classification of Research Diagnostic Criteria for TMD there are 3 main types of internal TMJ derangement: disc displacement with reduction and disc displacement without reduction with or without limited mouth opening. The prevalence of disc displacement is about 41% in TMD patients. The most common type is disc displacement with reduction characterized by clicking in the temporomandibular joint. In about 5% of cases the disc displacement without reduction with limited mouth opening is observed. The main symptoms of closed lock are pain in affected joint and decreased range of mouth opening (≤ 35 mm), which deteriorate the function of the stomatognathic system and force the patient to look for professional help [1][2][3]. REVIEWSThe symptoms of closed lock are usually related to disc displacement without reduction. The etiology of disc displacement is not clear, but there are a few possible reasons playing a key role in changes of the TMJ structure, such as parafunctions (e.g. bruxism), anatomical factors, trauma or general hypermobility of the joints [4][5][6][7]. In the majority of cases the disc is displaced anteriorly, blocking mechanically translating movement of the condyle, resulting in restricted mouth opening. In addition the bilaminar zone becomes overloaded by direct contact with the condyle, which is the main reason of pain in the TMJ [8].It has been stated that the natural course of disc displacement without reduction is self-limiting. Significant improvement of clinical symptoms of closed lock is observed in 75% of patients in a 2.5 year follow-up. The MRI scans reveal permanently displaced and deformed disc in untreated closed lock patients. The reduction of restriction of mouth opening and pain is most probably...

Background. Silicone-based liners are widespread materials in prosthetic dentistry. Their mechanical properties have to meet several key requirements such as adequate adhesion to denture base polymers in order to provide right function of masticatory system and oral hygiene. Objectives. The aim of this paper was to evaluate and compare tensile and shear bond strengths values of three modern autopolimeryzed silicone relining materials bonded to acrylic plates. Material and Methods. Three silicone-based soft relining materials were investigated in this study (A-Soft Line 30, Bosworth Dentusil and Elite Super Soft). A total of 78 specimens were prepared: 13 of each material (total: 39) for testing tensile bond strength and 13 of each material for testing shear bond strength (total: 39). The obtained data were analyzed statistically.

Background. End-stage renal disease (ESRD) patients are considered as a group of high risk of oral cavity diseases. One of the determinants of alveolar bone loss and increased teeth mobility in ESRD patients might be the bone abnormalities associated with chronic kidney disease-mineral and bone disorder (CKD-MBD).

This article presents selected cases of patients with functional disorders of the stomatognathic system. This group of patients had a need to made different types of removable occlusal splints. In the past, occlusal appliances were made mostly using self-cured acrylate materials, which for many years had no replacements. The rapid development of dental materials technology led to creation of thermo-formable materials and resins, which can successfully replace traditional acrylic materials in daily clinical practice. A practical application of light-cured resin in the fabrication of the occlusal splints in two clinical cases is reported and discussed herein.