Occlusal parameters and wear of artificial teeth in complete dentures with lingualized versus bilateral balanced occlusion: a randomized clinical trial.

Objective: This study aimed to assess the occlusal contact area (OCA), occlusal contact number (OCN), bite force, and artificial tooth wear in complete dentures with lingualized and bilateral balanced occlusion.

Methods: Edentulous participants who fulfilled the inclusion criteria were divided into the three groups as follows: group I, dentures with lingualized occlusion using interpenetrating polymer network artificial teeth; group II, dentures with lingualized occlusion using double cross-linked artificial teeth; and group III, dentures with bilateral balanced occlusion using anatomical micro-hybrid resin teeth. The silicone techniques were used to assess the OCA and OCN of the mandibular dentures and the Dental Prescale II was used to evaluate the bite force at the 2-week, 3-month, and 12-month follow-up visits.

Effect of staining solutions on color and translucency stability of resin-composite computer-aided design and computer-aided manufacturing blocks.

Background: The purpose of this study was to investigate the color difference (ΔE) and translucency changes (ΔTP) of resin-composite computer-aided design and computer-aided manufacturing blocks after exposure to staining solutions.

Methods: A total of 250 rectangular specimens (1.0-mm thick) were prepared from 4 resin-based composites (Brilliant Crios [Coltène Whaledent], Lava Ultimate [3M], Hyramic [Upcera], and Shofu HC [Shofu]) and a polymer-infiltrated ceramic network material (Vita Enamic [Vita Zahnfabrik]).

The effect of deviations in sintering temperature on the translucency and color of multi-layered zirconia.

Object: This study aimed to investigate the changes in the translucency and color of four different multi-layered zirconia materials when the sintering temperature were inaccurate.

Materials And Methods: Two hundred zirconia samples (11 × 11 × 1.0 mm) of four multi-layered zirconia, Upcera TT-GT (UG), Upcera TT-ML (UM), Cercon xt ML (CX), and Lava Esthetic (LE), were divided into five subgroups according to the sintering temperature: L1 (5% lower temperature), L2 (2.

Comparison of the efficacy and safety of first-line treatments for of advanced EGFR mutation-positive non-small-cell lung cancer in Asian populations: a systematic review and network meta-analysis.

According to the 2023 guidelines for treating non-small-cell lung cancer (NSCLC), first-line treatment and recently developed agents for the treatment of epidermal growth factor (EGFR) mutation-positive locally advanced or metastatic NSCLC were compared in this meta-analysis. Treatment regimens involved in the included studies included first, second, and third-generation tyrosine kinase inhibitors (TKIs), TKIs plus chemotherapy, TKIs plus angiogenesis inhibitors, and platinum-containing doublet chemotherapy with or without bevacizumab. Considering the varying efficacy and safety of drugs in people of different ethnic origins, the optimal regimen should be determined, and the safety of first-line treatments should be assessed in the Asian population specifically.

Effect of CAD-CAM ceramic materials on the color match of veneer restorations.

Statement Of Problem: With the different translucency levels and types of computer-aided design and computer-aided manufacturing (CAD-CAM) ceramic materials, choosing the most appropriate CAD-CAM ceramic materials to better reproduce the color appearance of natural teeth can be challenging.

Purpose: The purpose of this in vitro study was to analyze the color differences between natural teeth and milled veneers fabricated with the different types of CAD-CAM ceramic materials.

Material And Methods: Ten extracted maxillary central incisor teeth with the A2 shade in the body region were prepared for ceramic veneers.

[Impact assessment on enamel remineralization after orthodontic treatment with casein phosphopeptide calcium phosphate complex].

Purpose: To compare the effect on enamel demineralization following fluoride rinse or casein phosphopeptide calcium phosphate complex (CPP-ACP) after fixed appliance orthodontic treatment.

Methods: The study population consisted of 21 post-orthodontic patients (13 females, 8 males, 84 affected teeth) with white spot lesions (WSL). They were divided into 3 groups with 28 affected teeth in each group.

The effect of ceramic thickness and resin cement shades on the color matching of ceramic veneers in discolored teeth.

The objective of this study was to analyze the effects of ceramic material thickness and resin cement shade on the color matching of ceramic veneers at the gray tooth structures. Seventy-two artificial maxillary right central incisor teeth (C2 shade) were prepared according to veneer tooth preparation in practice. Ceramic materials (LT, A2 shade, IPS e.

[Evaluation of the esthetic effect of resin cements on the final color of ceramic veneer restorations].

Objective: To evaluate the influence of various shades of resin cements on the final color of an improved lithium-disilicate pressed glass ceramic veneers and analyze the agreement of resin cements and corresponding try-in pastes.

Methods: Forty-eight artificial maxillary central incisor teeth were sequenced according to the measured color parameters and divided at random into 8 groups (n = 6). These artificial teeth were prepared following veneer preparation protocol.

The influence of resin cements on the final color of ceramic veneers.

Purpose: To evaluate the effect of three brands of resin cement on the final color of ceramic veneers.

Methods: 50 disk-shaped ceramic specimens (IPS e.Max, 0.

[Effect of bleaching agents on the color of indirect and direct composite resins].

Objective: To evaluate the effect of bleaching agents on the color of indirect and direct composite resins.

Methods: Five resin composite materials were tested in this in vitro study. The five composites were as follow: two indirect composite resins (Adoro SR, Ceramage) and three direct composite resins (Filtek Z350, Clearfil Majesty Esthetic, and Gradia Direct Anterior).

Effect of in-office bleaching agents on the color changes of stained ceromers and direct composite resins.

Purpose: To evaluate the effect of two in-office bleaching agents on the color changes of two ceromers (Ceramage and Adoro SR) and one direct composite resin (Gradia Direct Anterior) after staining by tea and coffee.

Materials And Methods: Twenty-four disk-shaped specimens were fabricated for each resin material and randomly divided into three groups (n = 8). The specimens were immersed in tea, coffee or deionized water, respectively, for 7 days.

In vitro evaluation of halogen light-activated vs chemically activated in-office bleaching systems.

Objectives: To compare the tooth whitening efficacy, temperature and HP concentration changes induced by halogen light-activated and chemically activated in-office bleaching systems.

Materials And Methods: Twenty-four extracted premolars were randomly divided into two groups (n = 12): Group BL (35% HP with halogen light activation) and Group OP (38% HP with chemical activation). Tooth color was measured by a spectrophotometer according to the CIE L*a*b* color space system.

Nerve-targeted desensitizing toothpastes occlude dentin tubules and induce mineral precipitation.

Purpose: To examine the laboratory dentin tubules occlusion and mineral precipitation capability of two potassium salts-containing desensitizing toothpastes.

Methods: 40 dentin disks were obtained and divided into four groups, including artificial saliva (AS), distilled water (DW), Sensodyne Freshmint (SF) and Colgate Sensitive (CS). Dentin permeability measurement was performed after EDTA etching, initial brush, 3-day brush, 7-day brush and citric acid challenge, respectively.

Dentine remineralization induced by two bioactive glasses developed for air abrasion purposes.

Objectives: The present study aimed to evaluate dentine remineralization through a 7-day period of artificial saliva (AS) storage induced by bioactive glass 45S5 (BAG) and by bioactive glass modified with soda-lime spherical glass.

Methods: Partially demineralized dentine disks were treated by BAG or the spherical-glass modified bioactive glass (M-BAG) and subsequently immersed in AS for 7 days. Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR-FTIR) was used to quantitatively analyse the mineral variation of the dentine surface by calculating the spectra parameters.

Evaluation of the esthetic effect of resin cements and try-in pastes on ceromer veneers.

Objective: To evaluate the influence of various shades of resin cements on the final color of ceromer veneers and analyse the agreement of resin cements and corresponding try-in pastes.

Methods: Ceromer disks (Ceramage, 1.0mm×10mm diameter) were bonded to resin background disks (3.

Effect of desensitising toothpastes on dentinal tubule occlusion: a dentine permeability measurement and SEM in vitro study.

Objectives: The purpose of this study was to evaluate the in vitro effectiveness of a new bioglass-containing and two commercial desensitising toothpastes on dentinal tubule occlusion after citric acid challenge or artificial saliva (AS) immersion.

Methods: One hundred dentin discs from human third molars were used. Specimens were randomly divided into five groups (n=20), Group 1: EDTA-treated dentin; Group 2: brushing with distilled water; Group 3: brushing with Novamin; Group 4: brushing with Sensodyne Freshmint; Group 5: brushing with Colgate Sensitive.

[Effect of the shade and thickness of luting agent on the color of solidex resin].

Objective: To evaluate the effect of the shade and thickenss of luting agent on the final color of different thickness Solidex resin in vitro.

Methods: Five specimens of Solidex resin were fabricated at thickness of 0.5, 1.

[Effect of three backgrounds on the final color of Solidex with six different thickness].

Objective: To analyze the final color of Solidex in six thickness interacting with three different backgrounds.

Methods: Five specimens of Solidex in each shade A1, A3, and C2 were fabricated at thickness of 1.0, 1.