Comparison of Three Activating Methods of Irrigation on Smear Layer- and Debris-Removal Efficiency After WaveOne Gold® Single File.

Background: An endodontic treatment consists in cleaning, shaping and filling the root canal system. Irrigation is the chemical part of the process that ensures the total removal of debris. Activating the irrigation solution will improve and accelerate the process.

Color Stability of Resin Cements after Water Aging.

The color stability of resin cements plays a key role in the achievement of esthetically-pleasant restorations. Resin luting materials can be mainly divided into two main classes: adhesive (relying on previous application of adhesive systems) or self-adhesive (also known as one-step cements). The different chemical compositions determine their physio-mechanical characteristics which, in turns, influence their color stability.

A three-year randomized clinical trial evaluating direct posterior composite restorations placed with three self-etch adhesives.

Aim: To compare the clinical performance of composite restorations placed with a universal adhesive, one-step and two-step self-etch adhesives in class I and II posterior cavities.

Materials And Methods: In this study, 46 volunteers presenting with at least three carious lesions were included. Each participant received the three restorative systems: universal adhesive/nanofilled composite (Scotchbond Universal/Filtek Z350 XT: SBU/FZXT), one-step self-etch adhesive/microhybrid composite (G-aenial bond/G-aenial Posterior: GB/GP) and the two-step self-etch adhesive/nanohybrid composite (OptiBond XTR/Herculite Ultra: OBX/HU).

Dysregulation of Rho GTPases in orofacial cleft patients-derived primary cells leads to impaired cell migration, a potential cause of cleft/lip palate development.

Cleft lip and/or palate are a split in the lip, the palate or both. This results from the inability of lip buds and palatal shelves to properly migrate and assemble during embryogenesis. By extracting primary cells from a cleft patient, we aimed at offering a better understanding of the signaling mechanisms and interacting molecules involved in the lip and palate formation and fusion.

Altered regulation of cell migration in IRF6-mutated orofacial cleft patients-derived primary cells reveals a novel role of Rho GTPases in cleft/lip palate development.

Orofacial clefts are the most common congenital craniofacial birth defects. They occur from a failure in cell proliferation and fusion of neural crest cells of the lip buds and/or palatal shelves. In this study, we investigate the genetic basis and molecular mechanisms in primary cells derived from a cleft and lip palate patient presenting van der Woude syndrome (VWS).

Osteogenic potential of dental and oral derived stem cells in bone tissue engineering among animal models: An update.

Small bone defects can heal spontaneously through the bone modeling process due to their physiological environmental conditions. The bone modeling cycle preserves the reliability of the skeleton through the well-adjusted activities of its fundamental cell. Stem cells are a source of pluripotent cells with a capacity to differentiate into any tissue in the existence of a suitable medium.

Comparing the osteogenic potential of schneiderian membrane and dental pulp mesenchymal stem cells: an in vitro study.

Mesenchymal stem cells, being characterized by high self-renewal capacity and multi-lineage differentiation potential, are widely used in regenerative medicine especially for repair of bone defects in patients with poor bone regenerative capacity. In this study, we aimed to compare the osteogenic potential of human maxillary schneiderian sinus membrane (hMSSM)-derived stem cells versus permanent teeth dental pulp stem cells (DPSCs). Both cells types were cultivated in osteogenic and non-osteogenic inductive media.

Differences in osteogenic and odontogenic differentiation potential of DPSCs and SHED.

Objective: Dental pulp stem cells (DPSCs) and stem cells from human exfoliated deciduous teeth (SHED) are types of human dental tissue-derived mesenchymal stem cells (MSCs) that have emerged as an interesting and promising source of stem cells in the field of tissue engineering. The aim of this work is to isolate stem cells from DPSCs and SHED, cultivate them in vitro and compare their odontogenic differentiation potential.

Methods: DPSCs and SHED were extracted from molars, premolars and canines of six healthy subjects aged 5-29 years.

Assessing Dental Light-curing Units' Output Using Radiometers: A Narrative Review.

Introduction: This review aimed to describe dental radiometers and discuss their effectiveness compared to other light-testing devices.

Materials And Methods: The search for light-curing units (LCUs), radiometers, and other light-measuring tools available on the market was accomplished on data found on PubMed, Wikipedia, and Google.

Results: LCUs are prone to deterioration due to several reasons such as the light's limited life span, the worsening of the LCU's filters, light guide, and light tip end; consequently, decreased photopolymerization and insufficient resin conversion may occur.

Scanning electron microscopy evaluation of debris and smear layer generated by two instruments used in reciprocating motion WaveOne Gold® and Reciproc Blue®.

The aim was to evaluate debris and smear layer at 1, 3 and 5 mm from the foramen of single-file systems WaveOne Gold® and Reciproc Blue®. Thirty single-rooted teeth were prepared using one of the following NiTi instruments WaveOne Gold® and Reciproc Blue®. Root canals were observed under a scanning electron microscope.

Four-Year Follow-up of Increased Vertical Dimension of Occlusion using Resin Composites.

The objectives of this case report were to treat a severe loss of the vertical dimension of occlusion with indirect composite and to evaluate the durability of the restorations. A 55-year-old male complains from severe wear of teeth, leading to a change in normal occlusal plane. Two major treatment modalities were proposed to this patient; a conventional invasive crown placement with root canal treatments or a minimally invasive approach relying on adhesion.

The Effect of Expiration Date on Mechanical Properties of Resin Composites.

Objective: The aim of this study is to evaluate the effect of expiration date on some mechanical properties of resin composites after controlled storage of syringes and compules in a refrigerator at 4°C.

Materials And Methods: Specimens were tested at 7 days after storage in distilled water at room temperature. The investigated properties are the static modulus of elasticity, the flexural strength, and the Vickers microhardness.

Frequently Asked Questions about Vital Tooth Whitening.

Improving patients’ aesthetics is an important request in daily practice. Tooth whitening is a treatment option available for improving aesthetics. This paper will pose questions asked by our patients on bleaching techniques and outcomes and offer appropriate up-to-date answers.

Frequently asked questions in direct pulp capping of permanent teeth.

Unlabelled: Direct pulp capping is a proven method of preserving tooth vitality of a mature permanent tooth in cases of pulp exposures. The indications for this treatment, treatment modalities and materials are discussed in this paper.

Clinical Relevance: This paper answers many of the frequently asked questions by general practitioners, dental students and specialists about direct pulp capping.

Physico-mechanical characteristics of commercially available bulk-fill composites.

Objectives: Bulk-fill composites have emerged, arguably, as a new "class" of resin-based composites, which are claimed to enable restoration in thick layers, up to 4mm. The objective of this work was to compare, under optimal curing conditions, the physico-mechanical properties of most currently available bulk-fill composites to those of two conventional composite materials chosen as references, one highly filled and one flowable "nano-hybrid" composite.

Methods: Tetric EvoCeram Bulk Fill (Ivoclar-Vivadent), Venus Bulk Fill (Heraeus-Kulzer), SDR (Dentsply), X-tra Fil (VOCO), X-tra Base (VOCO), Sonic Fill (Kerr), Filtek Bulk Fill (3M-Espe), Xenius (GC) were compared to the two reference materials.

A 5-year comparison of marginal bone level following immediate loading of single-tooth implants placed in healed alveolar ridges and extraction sockets in the maxilla.

Purpose: The aim of present investigation was to evaluate marginal bone level after 5-year follow-up of implants placed in healed ridges and fresh extraction sockets in maxilla with immediate loading protocol.

Materials And Methods: Thirty-six patients in need of a single-tooth replacement in the anterior maxilla received 42 Astra Tech implants (Astra Tech Implant system™, Dentsply Implants, Mölndal, Sweden). Implants were placed either in healed ridges (group I) or immediately into fresh extraction sockets (group II).

Frequently asked questions in composite restorative dentistry.

Unlabelled: With an increasing number of dental practitioners using composite resins as the restorative material of choice, knowledge of terminology, handling properties and restorative techniques are important.

Clinical Relevance: This paper addresses many of the questions raised by participants at lectures and courses given by the authors across Europe.

[Multidisciplinary approach to behavior control of children during dental care: clinical study on the effect of learning by imitation].

Many techniques of behavioral control of children have been developed to help the good performance of their health treatment. The objective of this study was to test the effect of the "modeling" technique on the pulse of the children during dental treatment. 69 girls and 86 boys were selected and divided into 3 groups A, B and C.

Radiopacity of resin-based materials measured in film radiographs and storage phosphor plate (Digora).

This study compared the radiopacity of 41 resin-based materials using conventional dental x-ray film (Ultraspeed-D) and a digital system (Digora) based on storage phosphor plate technology. For the film-based technique, optical density measurements were carried out using an X-Rite densitometer. Al equivalents (mm) were calculated as described in the literature using a calibration curve of Optical Density versus the thickness of aluminum.