Abstract: The stomatognathic system consists of a series of interconnected elements, the function of which is affected by an enormous number of factors. Changes in one element determine a reconstruction of the entire system. By modifying the alignment of teeth, an orthodontic therapy sometimes induces unfavourable adaptation of the system to the existing occlusal conditions.

Abstract: The article aims at describing one of the modern methods of making metal prosthetic restorations, i.e. selective laser melting (SLM), with its advantages and disadvantages. Based on available literature, the article also compares the precision and accuracy of the structures made in the SLM technique as well as by means of milling and traditional casting.

Abstract: Despite the fact that standard procedures in overlay-based therapeutic systems do not involve treatment in centric relation, the advantages of treating prosthetic patients in centric relation are becoming to be more noticeable.

The article presents a proposal of conducting orthodontic treatment in centric relation using the Clear Aligner overlay system.

Abstract: Deformations of prosthetic field structures are the most common problems which accompany the process of collecting impressions with silicone and polyether materials. The deformations occur most often on the palatal surfaces of molars and premolars.

The article present a method of adapting an upper anatomical impression tray used to take two-layer simultaneous impressions, which improves substantially the quality of such impressions. As a consequence, a two-stage three-layer impression is created.

Abstract:  A dental practitioner may encounter a number of different complications during chemotherapy, radiotherapy, immunotherapy, and haematopoietic stem cell transplantation. Cancer patients should be treated based on an interdisciplinary approach. When taking care of a cancer patient it is important to remember about proper dental preparation. This way the risk of complications will be reduced. Latest views and opinions show that comprehensive treatment of a cancer patient is justified and necessary. The aim is to minimise complications as well as keep the proper function and aesthetics of the stomatognathic system.

The paper discusses the most common oral complications related to cancer management and the principles of prevention and treatment.

Abstract:  Retention of canine teeth within the bone tissue of the jaws is a serious dental problem. The absence of a canine in the dental arch substantially disturbs occlusion as well as prevents the achievement of a full aesthetic smile.

Aim: The aim of the research study was to assess the time of bringing impacted canine teeth in the mandible and the maxilla depending on the position of the tooth within the alveolar ridge and the patient’s age, as well as to determine the cause of various complications.

Material: The study group consisted of 33 patients (including 26 women) aged 11 to 49, who underwent the procedure of impacted canine tooth exposure in the years 2004–2014. In four patients (including three women) upper canine teeth were uncovered on both sides of the arch; whereas teeth 13, 23 and 33 were additionally uncovered in one female patient. Thirty-nine procedures were carried out in total.

Method: The position of the impacted teeth was assessed in a clinical examination and on the basis of an orthopantomogram and a bite plate. The inclination of the long axis of the canine tooth towards midline and the plane of occlusion, as well as the position of the canine tooth’s crown in relation to the roots of neighbouring teeth were analysed. The time of bringing the teeth to the arch was measured – starting from the day of the procedure until the tooth’s crown appearance inside the oral cavity.

Results: Among the 33 examined patients (average age of 17), unsuccessful bringing of the impacted teeth to the arch was observed in five cases and concerned the patients aged 35 to 49. Surgical treatment had to be carried out again in seven patients. In the remaining cases the average time of bringing the teeth to the arch was 14 months. Seventeen canine teeth were located in the vestibule of the oral cavity; 22 were located palatally. Complications in the form of gingival recessions were not observed in any case.

Abstract: The aim of this study was to determine and compare the rate of complications associated with the surgical approach and the osteotomy method in patients after bilateral sagittal split osteotomy (BSSO) and external vertical ramus osteotomy (EVRO).

A retrospective study was conducted on a group of 53 patients with mandibular prognathism. Twenty-eight patients underwent BSSO and 25 – EVRO. Postoperative and intraoperative complications affected 56.6% of the patients. Complications were observed in 13 out of 25 people after vertical osteotomy and in 17 out of 28 patients after sagittal osteotomy. Most frequently the postoperative complications were related to sensory deficits within the inferior alveolar and mental nerves.

Vertical ramus osteotomy is connected with a small number of complications, which are usually transient. The number of complications associated with the extraoral and intraoral approach is similar.

Abstract: The tunnel techniques are the most universal methods used in the treatment of gingival recessions. Their application requires the use of connective tissue graft or biomaterial which are necessary for augmentation of soft tissue deficiency.

In the article, the current state of knowledge regarding the efficacy of the gingival recessions treatment, was presented.

Abstract: The presentation shows the process of implant-supported prosthodontic treatment planning in a patient with residual dentition in the mandible and edentulous maxilla. An analysis of diagnostic models, photographs and X-ray images was performed; dentures and temporary bridges were designed and made in order to determine correct occlusion. The patient was supplied with six Ankylos^® implants, which were later loaded with a Prettau^® zirconia bridge. Teeth reconstruction using an implant-supported bridge in the maxilla was postponed by the patient.