[Hypertrophy of palatine tonsils - possible treatment approaches].

Objective: To evaluate the effectiveness of different approaches to the treatment of patients with hypertrophy of the palatine tonsils (HPT).

Material And Methods: 90 children with HPT of II-III degree and 20 healthy children (group 1) aged from 3 to 7 years were included in the study. Children with HPT were divided into three groups: group 2 - children who underwent tonsillotomy (=30), group 3 - children who underwent conservative treatment, including only topical use of Polyoxidonium (=30), group 4 - children who underwent complex treatment (tonsillotomy with subsequent local use of Polyoxidonium), (n=30).

Daytime use of a custom bleaching tray or whitening strips: initial and sustained color improvement.

Purpose: To compare the clinical response of 6% hydrogen peroxide whitening strips and a 10% carbamide peroxide custom tray system under common daytime usage conditions, in an Italian dental research center.

Methods: Informed consent and baseline measurements were collected, and 43 healthy adults were randomly assigned to 6% hydrogen peroxide whitening strips (Crest Whitestrips) or the 10% carbamide peroxide custom tray (Opalescence 10%). The maxillary arch was treated twice daily for 30 minutes at-home.

Bond strengths of a porcelain material to different abutment substrates.

The study evaluated the bond strength values of a single-unit all-porcelain material luted with an adhesive-resin cement to different abutment substrates: amalgam, compomer, traditional glass ionomer cement, microhybrid resin composite, two resin composites for abutment build-up, gold, sandblasted gold, dentin and enamel. Syntac enamel-dentin bonding system, in combination with IPS-Empress porcelain material, was used. After thermal cycling, the samples were inserted into a Bencor jig device and sheared in a Controls testing machine.

Clinical evaluation of a one-bottle bonding system for desensitizing exposed roots.

Purpose: To evaluate the effectiveness of a one-bottle adhesive system as a desensitizing treatment, with or without a prior phosphoric acid-etch step.

Materials And Methods: Two different clinical procedures using a one-bottle adhesive bonding system were tested for its efficacy on desensitizing exposed roots. Thirty subjects with a history of dentin hypersensitivity were selected and 60 exposed sensitive teeth were divided into two groups (n = 30).

Interdiffusion of a traditional glass ionomer cement into conditioned dentin.

Purpose: To investigate whether a new auto-curing glass ionomer cement (Fuji IX) in combination with polyacrylic acid (Cavity Conditioner) forms an interdiffusion zone both under laboratory and clinical conditions.

Materials And Methods: Seven vital human posterior teeth were selected. A flat dentin surface was created on the buccal surface in order to apply the glass ionomer material.

Short-term assessment of leakage of Class V composite restorations placed in vivo.

The purpose of this study was to investigate the effectiveness of two dentin bonding systems, one of which was also in combination with a self-curing resin, when applied in V-shaped circular cavities cut in anterior teeth crossing the cementum-enamel junction. Twenty-seven teeth scheduled for extraction for periodontal reasons were treated in vivo. The sample teeth were divided at random into three groups.

Effect of two etching times on the sealing ability of Clearfil Liner Bond 2 in Class V restorations.

Purpose: To investigate the sealing ability of the Clearfil Liner Bond 2 self-etching primer in Class V restorations placed under clinical and laboratory conditions.

Materials And Methods: Firstly, the influence of two etching times of the self-etching primer were tested in vitro. In 10 Class V cavities (Group 1), the self-etching primer was applied for 30 seconds on the enamel and dentin, while in another 10 Class V cavities (Group 2) the etching time was 60 seconds.

Dentin infiltration by three adhesive systems in clinical and laboratory conditions.

Purpose: To evaluate in vivo and in vitro the formation of hybrid layer, resin tags and adhesive lateral branches, by use of three different enamel dentin bonding systems.

Materials And Methods: The dentin adhesives were tested on flat dentin preparations made on buccal surfaces of vital, periodontally compromised teeth. The samples were randomly divided in four groups: Group 1: Prime & Bond 2.

Sealing performance of Scotchbond Multi-Purpose-Z100 in Class II restorations.

Purpose: To evaluate the sealing ability of Class II Scotchbond Multi-Purpose/Z100 composite restorations placed under in vivo and in vitro conditions.

Materials And Methods: For the in vivo part, Class II preparations were cut in posterior teeth which were scheduled for extraction for periodontal reasons. The cervical margins ended in dentin-cementum, 1 mm below the CEJ.