Simulation of oral environmental conditions through artificial aging of teeth for the assessment of enamel discoloration in orthodontics.

Background: The clinical performance of dental materials can be predicted via artificial aging approaches. The bracket bonding procedure may cause irreversible alterations to the enamel surface. The aim of this study was to introduce a novel artificial aging protocol and evaluate its effect on the discoloration of both bracket-bonded and unbonded teeth while also comparing the effects of four orthodontic adhesives on enamel color and whiteness.

Investigating the impact of whitening toothpastes on bioactive resin-based restorative materials: a comparative analysis.

Objective: To assess the color stability and surface roughness of bioactive resin-based composite following exposure to coffee staining and brushing with whitening toothpastes.

Methods: Disk-shaped specimens of Filtek Z250 (FZ), Beautifil Flow Plus (BFP), Activa Presto (AP), and Fuji II LC (FII) were stained with coffee and then brushed with one of three toothpastes, conventional (C-TP), non-peroxide whitening (W-TP) or hydrogen peroxide-containing whitening toothpaste (HPW-TP) for 10 000 cycles. Changes in color (ΔE) and surface roughness were measured.

Comparative efficacy of In-office and walking bleach techniques in whitening of non-vital teeth.

Objectives: This study aimed to compare the efficacy of two non vital whitening techniques, In-office and Walking Bleach, using 35% hydrogen peroxide. The primary research question was to determine which technique achieves greater tooth color improvement.

Materials And Methods: Fifty non-vital anterior teeth with discoloration were randomly assigned to either the In-office (n = 25) or Walking Bleach (n = 25) groups.

Effect of bleaching and repolishing on whiteness change and staining susceptibility of resin-based materials.

Background: The aim of this study was to investigate the effects of different types of bleaching methods and repolishing on the whiteness index and staining susceptibility of additive and subtractive production resin-based materials and direct composite resins.

Methods: In this study, a total of 96 samples (8*8*2m) were prepared using a nanohybrid composite resin (Neo Spectra-ST (NS)), a subtractive-manufactured nanoceramic resin (Cerasmart270 (CS)), and an additive-manufactured permanent resin (Saremco print Crowntec (CT)). The samples were randomly divided into four treatment groups: control (distilled water, 14 days), in-office bleaching (Opalescence Boost-40% HP, 3*20min), at-home bleaching (Opalescence PF-16% CP, 6 h, 14 days), and toothpaste group (Opalescence Whitening, 2*5min, 14 days) (n:8).

The Impact of Traumatic Dental Injury on the Oral Health-Related Quality of Life of Preschool Children: A Cross-Sectional Study.

Background/aim: The aim of this study was to investigate the impact of traumatic dental injury (TDI) on oral health-related quality of life (OHRQoL) of preschool children, and further inform public oral health care policies and strategies for this age group TDI patients.

Materials And Methods: This retrospective and cross-sectional study was conducted in the Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China. It included 314 children aged from 2 to 5 years, with 90 children diagnosed with TDIs and 224 without TDIs.

Oral Conditions, Salivary pH, Flow Rate, Phosphate Level, and Phosphorus Intake of Pre- and Postmenopausal Women.

Objectives:  This study aimed to investigate salivary parameters, including pH, flow rate, phosphate levels, and phosphorus intake, to explore potential variations between postmenopausal and premenopausal women.

Material And Methods:  This study included 68 postmenopausal and 94 premenopausal women. Inclusion criteria comprised women aged 45 to 65 years with a minimum menopausal duration of 2 years and women aged 21 to 40 years for premenopausal participants.

A Randomized Controlled Trial Evaluating the Clinical Performance of Bioactive Restorative Material and Resin-modified Glass Ionomer Cement in Carious Primary Molar Restorations.

Aim And Objectives: To evaluate the clinical performance (marginal discoloration, surface texture, and retention) of bioactive restorative material (ACTIVA) and resin-modified glass ionomer cement (RMGIC) in carious primary molar restorations at 6 and 12-month intervals.

Materials And Methods: The split-mouth randomized controlled trial comprised 31 children aged 5-8 years having contralateral matched pair of carious primary molars with an International Caries Detection and Assessment System (ICDAS) II score 5. Sixty-two teeth were randomly allocated into two groups: group I-ACTIVA ( = 31) and group II-RMGIC ( = 31).

Effect of coffee roasting level on tooth discoloration.

Purpose: Coffee consumption is a well-known contributor to tooth discoloration, and the extent of staining is influenced by the chemical composition of the coffee. This study investigated the associations of coffee roasting level, chlorogenic acid (CGA) content, absorbance level, and their combined effects with tooth discoloration.

Methods: Bovine tooth enamel specimens were immersed in light, medium, and dark roasts of four coffee types (two Arabica and two Robusta coffees) for 72 h.

Long-Term Outcomes of Ceramic Veneers Restorations: A Comprehensive Analysis of Clinical and Patient-Reported Metrics.

Objectives: This study aimed to evaluate the clinical performance of ceramic veneers after 9-10 years, assess patient-reported outcomes, and examine their associations.

Materials And Methods: Thirty patients with ceramic veneers aged 9-10 years were recalled for a clinical examination. Each participant completed a questionnaire on satisfaction and oral health-related quality of life, specifically using the Oral Impact on Daily Performance (OIDP) scale.

Color evaluation of a one-shade used for restoration of non-carious cervical lesions: an equivalence randomized clinical trial.

Background: Obtaining a perfect color match with resin composite presents a significant challenge. The chameleon effect has enabled resin composite to mimic the color of the adjacent tooth structure in vitro. This double-blind, split-mouth and equivalent randomized clinical trial evaluated the color matching of one-shade resin composite with chameleon effect versus multi-shade resin composite in non-carious cervical lesion restorations (NCCLs).

An In-vitro Evaluation of Tooth Discoloration and Shear Bond Strength of Glass Ionomer Cement Bonded to Tooth Surface Pretreated with Silver Diamine Fluoride and Glutathione Biomolecule.

Background: Silver diamine fluoride (SDF) is employed in caries prevention and treatment; however, tooth discoloration post treatment is a significant disadvantage, which can be reduced using glutathione (GSH), a water soluble tripeptide.

Aim: To evaluate and compare the effect of glutathione biomolecule (GSH) and potassium iodide (KI) along with SDF on tooth discoloration and shear bond strength of glass ionomer cement (GIC) on the tooth surface.

Methods: Artificial caries were created on 48 extracted unblemished premolars and divided into four groups (SDF, SDF + KI, SDF + GSH, and Water).

Effect of the reduction in the exposure time to at-home bleaching gel on color change and tooth sensitivity: A systematic review and meta-analysis.

Objective: To investigate the effect of reducing exposure time to at-home bleaching gel on color change and tooth sensitivity.

Materials And Methods: The search was carried out using PubMed, Scopus, Web of Science, EMBASE, LILACS, Cochrane. Randomized clinical trials (RCTs) were included involving adult patients who have never undergone bleaching treatment before (P), subjected to bleaching with a reduced exposure time to the at-home bleaching agent (I) compared to those who used it for the time indicated by the manufacturer (C), to evaluate the effects on color change and tooth sensitivity (O).

Management of Complex Root Fractures in Young Patients-Case Series and a Literature Review.

Root fractures are defined as injuries involving dentine, cementum, and the pulp. They are rare, and they account for 0.5-7% of the dental injuries in the permanent teeth.

Efficacy of a Novel Stannous Fluoride Toothpaste Stabilized With Nitrate and Phosphates (SNaP) in Extrinsic Tooth Stain Removal: A Randomized Controlled Trial.

Background: This study compared the extrinsic tooth stain removal efficacy of a 0.454% stannous fluoride dentifrice stabilized with nitrate and phosphates (SNaP) versus a non-whitening regular fluoride dentifrice (negative control) after 3 and 6 weeks of product use.

Methods: This phase III, double-blind, randomized, two-cell, parallel-group study was conducted on 80 healthy adults in Puerto Rico.

Effect of Zinc on improving silver diamine fluoride-derived tooth discoloration in vitro.

Background: Silver Diamine Fluoride (SDF) is effective for arresting dental caries, presenting a valuable non-invasive treatment option in dentistry. Despite its therapeutic advantages, a significant drawback is the tooth discoloration that follows its application, which can affect patient acceptance. Addressing this aesthetic concern without diminishing the treatment's efficacy remains challenging in dental practice.

Digital Workflow for Rehabilitation of Severely Discolored Teeth Due to Red Staining from Endodontic Material.

The aim of this short communication is to present a technique to rehabilitate severely discolored teeth with computer-aided designed and computer-aided manufactured (CAD-CAM) zirconia crowns. After confirming the absence of periapical lesions and sufficient crown structure, any caries or fractured restorations can be removed and replaced by an interim composite restoration. A shoulder subgingival preparation is performed and scanned with an intraoral scanner to design a CAD-CAM zirconia crown using a monolithic zirconia material.

Effective Management of a Fractured Tooth in a Child Using an Aesthetic Pediatric Crown: A Case Report and Review of Literature.

Traumatic dental injuries in children present unique challenges, requiring evidence-based and individualized approaches. Accidental falls are a common cause, resulting in a spectrum of clinical presentations. Managing tooth injuries in mixed dentition adds complexity to treatment decisions.

Clinical Considerations and Management of a Labially Impacted Maxillary Canine With Immediate Implant Placement and Alveolar Bone Reconstruction: A Case Report.

A labially impacted maxillary canine is a relatively uncommon occurrence. In adult patients, management of impacted maxillary canines becomes necessary when the deciduous canine is lost, or if the impacted tooth becomes symptomatic. Orthodontic realignment is not always the preferred therapeutic approach due to the long treatment duration.

Effect of sintering temperature on color stability and translucency of various zirconia systems after immersion in coffee solution.

Background And Aim: Achieving the aesthetic standards in tooth-colored restorative materials requires close attention to their color, translucency, and resistance to discoloration. This study aimed to evaluate the effect of sintering temperature on color stability and translucency in zirconia systems with low, high, and ultra-high translucencies.

Methods: This experimental study was conducted on 60 zirconia disks with low, high and ultra-high translucencies (n = 20 per group), each group divided into subgroups to be sintered at either 1450°C or 1550°C (n = 10 per subgroup).

Navigating Crown-Root Fracture Complexities in an Adolescent.

Complicated crown-root fracture is a severe dental injury that affects the enamel, dentine, cementum, and pulp, representing a small percentage of dental trauma cases in permanent teeth. This case report discusses the management of a complicated crown-root fracture to the maxillary left central incisor in a 14-year-old male patient following a motor vehicle accident. The fracture extended subgingivally, complicating access and restoration.

Effect of Silver Diamine Fluoride and Potassium Iodide on Microleakage of Composite Resin in Anterior Primary Teeth.

Aim: One of the preventive interventions for early childhood caries is the use of silver diamine fluoride (SDF), which works uniquely in the prevention of caries. The suggested method to minimize the discoloration of SDF is the use of potassium iodide (KI). However, there are concerns about the bonding properties of dentin after the application of SDF-KI.