[Bond strength of metal brackets to enamel with a Russian adhesive complex: an in vitro study].

Background: The era of using adhesives to fix brackets began in the 70s of the last century. There are eight generations of foreign-made adhesive systems for the restoration of teeth. However, until now, in orthodontics, the development of domestic adhesive systems with improved properties of adhesion of brackets to tooth enamel still important, especially in the posterior teeth.

Comparison of the Pull-Out Resistance of Grossly Decayed Primary Anterior Teeth Restored With Two Different Intracanal Posts: An In Vitro Study.

Background Severely damaged primary anterior teeth that require pulp therapy present a high risk of failure due to the loss of tooth substance, resulting from pre-existing decay and endodontic therapy. The ideal post material should have physical and mechanical properties similar to those of dentin. Another concern in restoring endodontically treated primary teeth is the need to find a material that can resorb similar to the natural tooth structure as a part of the exfoliation process, allowing normal eruption of permanent successors.

Evaluation of Bioceramic Putty in Pulpotomy of Immature Permanent Molars With Symptoms of Irreversible Pulpitis.

Purpose This study aimed to evaluate the effectiveness of both mineral trioxide aggregate (MTA) and bioceramic putty (Well-Root PT) in the pulpotomy of immature permanent molars diagnosed with symptoms of irreversible pulpitis. Materials and methods The study included 30 immature permanent molars with symptoms of irreversible pulpitis in 30 healthy children aged six to eight years. They were randomly distributed into the following two groups according to the material used: group 1 included 15 first permanent molars capped by MTA and group 2 included 15 first permanent molars capped by bioceramic putty.

Evaluation of the Efficacy of Nasal Sedation Midazolam Compared with Dexmedetomidine in the Management of Uncooperative Children with Down Syndrome during Dental Treatment.

Objective: This study aimed to compare the intranasal administration of midazolam and dexmedetomidine in uncooperative children with Down syndrome.

Materials And Methods: The sample consisted of 20 children with Down syndrome aged 5 to 11 years who were divided equally into two groups: Group 1 (experimental) nasal dexmedetomidine and Group 2 (control) nasal midazolam. The efficacy of both the drugs was evaluated according to Ohio State University Behavioral Rating Scale (OSUBRS), University of Michigan scale (UMSS), and Houpt general behavior scale.

Shaping Ability of Reciproc Blue Versus One Curve in Curved Canal: An In-Vitro Study.

The introduction of nickel-titanium (NiTi) rotary instruments improved the root canal preparation of the narrow and curved root canals, especially after the introduction of thermomechanical treated (NiTi) alloys that have a high flexibility to prepare the curved canal reducing the common clinical complication, such as fracture, the change of the original shape of the root canal as a result of the change in the curvature of the curved root canal, the change of the working length which caused by the creation of the ledges, canal transporting and zipping especially in medium and highly curved canal. This study aimed to compare the shaping ability of two heat-treated nickel-titanium single file systems using reciprocation motion and rotary motion in curved canals. Materials and methods Thirty extracted human teeth with one curved root at 25 to 56 degrees were used, two NiTi single file systems were used to prepare the curved root canal in two groups: Reciproc R25 (Munich, Germany: VDW) group (n=15) and One Curve (Besancon, France: Micro-Mega) group (n=15).

Pain assessment following endodontic treatment using two automated systems compared to manual treatment in primary molars.

Background: Root canal treatment in primary teeth is quite difficult and time-consuming, especially canal preparation. Pain is the most common negative outcome following root canal treatment, occurring hours or days after treatment. It is an unpleasant experience for both the patient and the dentist.

[Comparative efficacy of Botox and surgical lip repositioning in the correction of gummy smile].

Background: A smile plays an important role in determining a person's initial impression.

Objective: This study aims to evaluate the effectiveness of both injection botulinum toxin type A (botox) and surgical lip repositioning in the correction of the gummy smile due to hyperactive upper lip according to the resulting smile and the patients' satisfaction.

Material And Methods: The study consisted of 24 patients: 12 received the BTX-A (botulinum toxin type-A) injection and the remaining 12 underwent the surgical procedure (lip repositioning).

[INFLUENCE OF BEVERAGES ON THE DENTOALVEOLAR SYSTEM (EXPERIMENTAL STUDY)].

The aim of the study was to determine the influence of various drinking liquids on an the dentoalveolar system in rats. The study was carried out on 25 white male rats from the nursery of Krolinfo branch of the Moscow region which were kept in standard vivarium conditions. Age of rats-3-6 months, weight - 150-200 grams.

[Evaluation of the effect of sodium hypochlorite gel on composite bonding strength to enamel of primary teeth after salivary contamination: in vitro study].

Objective: The study investigated the effect of 2%s odium hypochlorite gel application after post-etching salivary contamination on composite bonding strength to primary teeth enamel.

Material And Methods: The sample consisted of 79 primary human teeth that were extracted no more than one month ago. The sample was randomly divided into four groups: (1) the control group (A) comprised 10 primary teeth, and composites were applied in the traditional manner without any salivary contamination; (2) the second group (B) consisted of 23 primary teeth in which salivary contamination was conducted after etching followed by re-etching and follow-up; (3) the third group (C) comprised 23 primary teeth in which saliva contamination was done after etching followed by washing, drying, and follow-up; and (4) the fourth group (D) comprised 23 primary teeth, in which salivary contamination was conducted after etching followed by application of sodium hypochlorite gel and follow-up.