An in vitro examination of fluoride ions release from selected materials - resin-modified glass-ionomer cement (Vitremer) and nanohybrid composite material (Tetric EvoCeram).

The aim of this study was to examine a short-term fluoride ions release from selected materials - resin-modified glass ionomer -Vitremer (3M ESPE) and nanohybrid universal composite - Tetric EvoCeram (IvoclarVivadent). Release of fluoride ions [µg/mm2 /h] from Tetric EvoCeram and Vitremer into nine environments (artificial saliva - AS, deionized water and 0.9% NaCl) differing in composition of the solution and pH was determined.

The assessment of temperature amplitude arising during the implant bed formation in relation to variable preparation parameters - in vitro study.

The main purpose of this study was to analyse the temperatures generated during the bone bed preparation, given the internal structure of the bone bed, the geometry of the hole, and the treatment parameters such as the type of cooling and the rotational speed of the drill. The investigated material was domestic pig ribs, in which holes were drilled three times using two drill bit systems used for Hiossen® and Paltop® dental implantation. The ThermaCAM® P640 thermal imaging camera was used for measurement of drilling temperatures.

Preliminary In Vitro Study of Fluoride Release from Selected Ormocer Materials.

The purpose of the in vitro study presented in this paper was to determine the long-term release of fluoride ions from selected ormocer materials (Admira (A), Admira Flow (AF), Admira Seal (AS)). The release of fluoride ions from these materials into a saline solution (0.9% NaCl) and deionized water was tested for 14 weeks.

Study of Surface Structure Changes for Selected Ceramics Used in the CAD/CAM System on the Degree of Microbial Colonization, Tests.

In the article has been presented an analysis of susceptibility of selected dental materials, made in the CAD/CAM technology. The morphology and structural properties of selected dental materials and their composites were determined by using XRPD (X-ray powder diffraction) techniques, as well as the IR (infrared) spectroscopy. Moreover, an adhesion as well as development of biofilm by oral microorganisms has been studied.

Craniofacial and Dental Manifestations of Melnick-Needles Syndrome: Literature Review and Orthodontic Management.

The aim of this article was to present a characteristic clinical image of Melnick-Needles syndrome using an example of an 11.5-year-old female patient treated at the Facial Congenital Disorders Outpatient Clinic as well as to present the actual literature review of the surgical treatment. The patient was diagnosed with several characteristics typical for Melnick-Needles syndrome: single-sided hearing loss, malocclusion, and facial dysmorphism, among others.

Bite Reconstruction in the Aesthetic Zone Using One-Piece Bicortical Screw Implants.

The aim of this article was to present the clinical application of a new, smooth surfaced one-piece bicortical screw implant with immediate loading protocol. An 18-year-old, healthy male patient with a history of total dislocation and replantation of teeth 11 and 21 in early childhood was admitted to the clinic. Teeth 11 and 21 were extracted, and two long one-piece implants were inserted at extraction sockets in one surgical session under local anesthesia.

Long-term release of fluoride from fissure sealants-In vitro study.

The intensity of the cariostatic activity of fluoride ions can be attributed to their multidirectional influence on the caries process. They are an irreplaceable factor that helps sustain mineral balance of dental tissues, simultaneously demonstrating antibacterial properties. As a consequence, many manufacturers of fissure sealants include fluoride ions in their products.

Assessment of Heat Hazard during the Polymerization of Selected Light-Sensitive Dental Materials.

Polymerization of light-cured dental materials used for restoration of hard tooth tissue may lead to an increase in temperature that may have negative consequence for pulp vitality. The aim of this study was to determine maximum temperatures reached during the polymerization of selected dental materials, as well as the time that is needed for samples of sizes similar to those used in clinical practice to reach these temperatures. The study involved four composite restorative materials, one lining material and a dentine bonding agent.

The Effect of File Size and Type and Irrigation Solutions on the Accuracy of Electronic Apex Locators: An Study on Canine Teeth.

Measurements of the root canal during endodontic treatment have a significant influence on the course of the therapeutic process as well as on its final result in both human and veterinary medicine. The apical constriction should be the termination point for the preparation and filling of the root canal. This research was conducted with the use of a Septodont kit consisting of a small chamber filled with the examined solution in which a healthy second incisor was placed.

Infrared Thermographic Assessment of Cooling Effectiveness in Selected Dental Implant Systems.

The excessive temperature fluctuations during dental implant site preparation may affect the process of bone-implant osseointegration. In the presented studies, we aimed to assess the quality of cooling during the use of 3 different dental implant systems (BEGO®, NEO BIOTECH®, and BIOMET 3i®). The swine rib was chosen as a study model.

The evaluation of knee bone mineral density following open-wedge high tibial osteotomy.

Examinations of bone density changes in selected knee bone ends were evaluated prospectively in a randomized group of 28 patients, aged from 41 to 65 (mean: 55.3 years), who had varus deformations of their mechanic limb axes, mean 8 degrees. The examinations were conducted during the preoperative period, 10 days, 3, 6, and 12 weeks, as well as 6 and 12 months after the procedure.

Perilunar carpal dislocations treatment outcome.

Background. The aim of the study was to analyze late outcomes of perilunar carpal dislocations, depending on the type of the injury, time of the diagnosis and the treatment methods. Material and methods.

Clinical and radiological evaluation of Smith's fractures with buttress plate stabilization.

Background. This study was a retrospective follow-up evaluation of clinical and radiological outcome in Smith's fractures in 38 patients treated in the Orthopedics and Traumatology Department at the Skubiszewski University Medical School in the years 1986-2005. Material and methods.

[Short-term fluoride release from conseal F fissure sealant in some media--an in vitro study].

Introduction: Low fluoride concentrations constantly maintained in the oral cavity are important for caries prevention. Application of fissure sealants containing fluoride improves protection and reinforces caries prophylaxis. The aim of this study was to assess the level of fluoride release from Conseal F fissure sealant in different media.

[Long term release of fluoride from selected glass-ionomer cements--in vitro study].

Introduction: Conventional and resin modified glass-ionomer cements according to their physico-chemical properties are widely used in dental treatment. The main advantages of these materials are chemical bonding to hard dental tissues and high level of fluoride release. The aim of this study was to compare the fluoride release of selected glass-ionomer cements in vitro conditions.

[Effect in vitro of environmental parameters on the release of fluoride ions from some materials used in dentistry].

The aim of this in vitro study was to evaluate the influence of calcium ions and pH on fluoride release from selected dental materials. The materials studied included a resin composite (Te-Econom), fissure sealant (Conseal F) and compomer (Freedom). Samples were placed for 7 days in artificial saliva with or without calcium ions and pH ranging from 4.

[Release of fluoride ions into saliva from some dental materials].

The aim of the study was to evaluate fluoride release from dental materials: resin composites--Tetric Ceram and Degufill Mineral, fissure sealants--Conseal F and Admira seal, compomer--Freedom and glass-ionomer cement--Vitremer. Release to the patient's unstimulated mixed saliva was studied after treatment with the material. The study group comprised 72 patients and fluoride concentrations were measured with an ion-selective electrode (Orion).