Examination of the bioelectrical activity of the masticatory muscles during Angle's Class II division 2 therapy with an activator.

Background/aim: The muscles of the orofacial region have great influence on the development of dentition and occlusion formation. It is known that improper function of these muscles is one of the major etiological factors in malocclusion. A correlation between function disorders of orofacial muscle and occlusion disorders has been confirmed, as well as a correlation between the bioelectric activity of the masticatory muscles, recorded by electromyography, and bite force upon maximal voluntary contraction of these muscles.

Application of fibrin rich blocks with concentrated growth factors in pre-implant augmentation procedures.

Introduction: Growth factors are mediators regulating the key processes of tissue regeneration, including cell proliferation and differentiation, extracellular matrix synthesis, chemotaxis and angiogenesis. In addition to the role they play in haemostasis and inflammatory processes, thrombocytes are of major importance in the reparation of mineralized and soft tissues. Application of fibrin rich blocks with concentrated growth factors is one of the latest approaches to guided bone regeneration and augmentation of lost bony structures of the alveolar ridge.

Improving mechanical properties of flowable dental composite resin by adding silica nanoparticles.

Background/aim: The main drawback of flowable dental composite resin is low strength compared to conventional composite resin, due to a low amount of filler, neccessary for achieving low viscosity and ease of handling. The aim of this study was to improve mechanical properties of flowable dental composite resin by adding small amount of nanoparticles, which would not compromise handling properties.

Methods: A commercially available flowable dental composite resin material was mixed with 7 nm aftertreated hydrophobic fumed silica and cured by an UV lamp.

[Stabilisation of lower denture using mini dental implants].

Unlabelled: INTRODUCTION. The role of the total lower denture is not only to replace the missing teeth but also to provide the substitute for a range of supporting tissues which have diminished due to the process of resorption, to re-establish the original relations in the region ofjaw complex, to support the surrounding soft tissues which have lost their natural support, and, moreover, to be unobtrusive and discrete substitution of lost functions. Application of Mini-dental Implants.

A biomechanical model for a new incremental technique for tooth restoration.

The objective of this study is to introduce a modified incremental technique that leads to improved marginal adaptation and to develop a mathematical model that explains the results obtained. The technique proposed is a two-step incremental technique that reduces volume of a resin that is polymerized at each step and eliminates the central point in resin, so that the stresses are additionally reduced. In the first step, the resin is placed in the cylindrical cavity with a conical dental instrument embedded in the middle of restoration.