ABSTRACT One area of technological advancement has been the shift from stainless steel hand tools to nickel‐titanium (Ni‐Ti) rotary tools. This paper aims perform an in vitro comparative study evaluate efficacy five endodontic manual and instruments such as Kerr files, Orodeka Plex V, ProTaper Flydent NiTi super files combination with ultrasonic E3D Diamantata EMS scaler used for root canal shaping. The following aspects were highlighted: effective removal smear layer (SL) dentinal tubules...

Dental pulp represents a specialized connective tissue enclosed by dentin and enamel, the most highly mineralized tissues of body. Consequently, direct examination as well pathological evaluation dental is difficult. Within this anatomical context, our study aimed to evaluate correlation between lesions clinical diagnosis. Pulpectomies were performed for 54 patients with acute chronic irreversible pulpitides 5 (control group) orthodontic extractions. The morphological features...

The aim of the present study was to assess by atomic force microscopy (AFM) surface roughness a traditional glass ionomer cement- GIC (Fuji IX GP, GC Corporation, Tokyo, Japan) and resin modified RMGIC (Vitremer, 3M ESPE, St. Paul, MN, USA) after different immersion regimes on some acidic drinks. Sixteen cylindrical samples having height 5 mm thickness 2 were obtained from each material they divided into two groups: Group I samples) II (Vitremer samples). Specimens group then randomly 4...

Background and Objectives: Alveolar ridge augmentation in the complex bone defect is a popular topic implantology. Guided regeneration (GBR) one of most commonly applied methods to reconstruct alveolar bone. The application membrane fundamental principle GBR. There are many types used oral surgery, but advantage titanium mesh rigidity which provides space maintenance prevents contour collapse. smooth surface also reduces bacterial contamination. Using computer-aided design (CAD)...

The aim of this in vitro study was to evaluate the effect hydrochloric acid associated with abrasive toothbrushing on surface condition three flowable composite resins used for direct restoration. Seventy samples each resin: Grandio Flow (VOCO, Germany)-group A, Filtek Ultimate (3M-ESPE, MN, USA)-group B, G-aenial Flo X (GC Europe)-group C were prepared, submersed 30% 60 min and then submitted simulated procedure using 5000 cycles toothbrushes medium hard bristles, immediately after chemical...

This in vitro study aimed to assess the erosive effect of hydrochloric acid association with toothbrushing procedure on surface condition three bulk-fill composite resins used for direct restoration. A total 480 samples (160 from each resin): X-tra Fil (VOCO, Germany)—group A, Filtek Bulk-fill Posterior (3M-ESPE, St. Paul, MN, USA)—group B, G-aenial (GC Japan)—group C were prepared, submitted chemical attack 60 min 30% and, subsequently, abrasive using 10,000 cycles medium and hard bristles,...

Background and Objectives: The aim of this in vitro study was to evaluate the combined effect a 2% chlorhexidine aqueous solution universal adhesive system applied self-etch etch-and-rinse strategies on composite resin–dentin interface. Materials Methods: Class V cavities were prepared facial lingual surfaces forty caries-free molars extracted for orthodontic reasons. samples randomly divided into two groups corresponding used etching protocol: I—etch-and-rinse; II—self-etch. In each tooth,...

The aim of the study was to evaluate antibacterial activity and surface hardness a light-activated microhybrid composite resin modified with green silver nanoparticles (AgNPs). AgNPs were synthesized using an Equisetum sylvaticum extract characterized through different methods such as UV-Vis, EDX, FTIR. obtained mixed (Herculite XRV, Kerr Corp., Orange, CA, USA) in concentrations: 0% (group A-control); 0.5% B); 1% C); 1.5% D). A total 120 disk-shaped samples divided into 4 groups (n = 30)...

The study aimed to assess the number, localization and distribution of interleukin 6 (IL-6) positive cells in healthy pulp, acute chronic pulpitis. group included 48 patients aged between 18-72, treated University Medicine Pharmacy Grigore T. Popa Iasi, Romania. pulpectomy was performed on 42 diagnosed with other patients, without signs dental caries or periodontal disease, were submitted extractions teeth for orthodontic purposes, before extraction. pulp samples examined optic microscope....

This in vitro study evaluated the effects of dentifrices containing nano-hydroxyapatite (n-HAp) on dentinal tubule occlusion and mineral deposition. Dentin specimens ten human teeth were submersed for 30 s 40% citric acid then randomly divided into four groups (three one control group). In groups, dentin samples exposed to three different n-HAp toothpastes: Karex (Dr. Kurt Wolff GmbH & Co. KG, Bielefeld, Germany), Biorepair Plus Sensitive (Coswell SpA, Bologna, Italy), Dr. Wolff’s...

The aim of the study was to compare marginal adaptation three different resin-based materials used for direct restoration: hybrid composite resin (Gaenial Posterio, GC Corporation), a compomer (Dyract eXtra, Dentsply Sirona), and giomer (Beautifil II, Shofu Dental) applied at room temperature or after preheated preheating 50 60oC. Class II cavities were prepared on proximal surfaces extracted teeth randomly divided in 3 groups according material restoration. In each group five restored using...

The study aimed to investigate the effects of endodontic space decontamination using a laser combined with ozonated water in therapy complicated pulp gangrene. subject this vivo was 12-year-old patient diagnosed extensive periapical periodontitis on mandibular right first molar. Biological samples were initially collected identify active pathogen—Enterococcus faecalis, then nonsurgical treatment performed single visit, according disinfection guidelines identified pathogen. Two-month...

There are two main methods used for dentin hypersensitivity (DH) treatment: dentinal tubule occlusion and blockage of nerve activity. Dentifrices the most common vehicles active ingredients DH treatment. The aim this study was to evaluate efficacy three toothpastes on occlusion, mineral acquisition, hardness. Forty human disks were submerged in 40% citric acid 30 s then exposed tooth brushing 2 min twice a day 14 days using toothpastes: Dontodent Sensitive (group 1), Dr. Wolff’s Biorepair...

The aim of this study was to assess the quality interface between dental root cement and some restorative materials used in open sandwich technique. Standardised cavities were prepared on buccal oral surfaces 30 human molars with gingival margin situated cement. teeth randomly divided 3 groups. Different combinations cavities. In control group, filled only composite resins (Filtek Z250-3M ESPE Zmack Comp-Zermack). test groups restored using an technique as follows: group 1 Filtek Z250...

The aim of this study was to evaluate and compare the compression behavior under identical mechanical tests, three different composite resins, by determining Young�s modulus for compression, ultimate compressive strength strain. studied materials were: Filtek Z250 Universal Restorative, Z550 Bulk Fill Posterior Restorative (3M ESPE, St. Paul, MN, USA). Fifteen cylindrical samples, having 6 mm in height 5 diameter, were made from each material, using plastic molds. samples subjected...

Background and Objectives: The aim of this in vitro study was to evaluate the effect gastric acid associated with toothbrushing on surface roughness different types composite resin used for direct restorations. Materials Methods: materials were two microhybrid (Filtek Z250, Herculite XRV) nanohybrid Z550, XRV Ultra) resins. Two hundred forty cylindrical samples a height 2 mm diameter 6 divided into four groups (groups A, B, C D) corresponding each tested material (n = 60). Each group...

The aim of the study was to evaluate surface characteristics, after finishing and polishing with 3 different systems, a universal nanocomposite material, starting from microstructure experimentally analyzed by atomic force microscopy.

The aim of this in vitro study was to evaluate the impact finishing procedures on enamel adjacent composite restorations and assess if resistance enamel-resin junction leakage is affected by use these instruments. surfaces at joint with were observed scanning electron microscopy, then microleakages margin assessed using an optical microscope. Finishing extra-/ ultra-fine carbide burs extra-fine diamond produced a superficial abrasion did not seem have significant influence sealing ability resin.

The aim of this study was to evaluate the postoperative effect one bleaching agent containing 40% peroxide hydrogen on interface between dental tissues and a microhybrid composite resin bonded with universal adhesive applied in total-etch self-etch technique. Standardized Class V restorations were performed oral surfaces 40 extracted human molars gingival margins placed bellow cement-enamel junction. For 20 preliminary etching for others by using Half samples each group bleached Opalescence...