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American Journal of Dentistry

Haifa Maktabi, Abdulrahman A Balhaddad, Qoot Alkhubaizi, Howard Strassler, Mary Anne S Melo
PURPOSE: (1) To conduct a comprehensive review of the literature on factors influencing the radiant exposure of resin-based composite (RBC) restorations and (2) To fully understand the appropriate way of using the light curing units (LCUs) to perform restorations with optimal mechanical/physical properties. METHODS: A PubMed search identified recent publications in English that addressed the factors affecting the longevity of the RBC restorations and the optimal usage of LCUs...
December 2018: American Journal of Dentistry
Katie J Camacho, Jeryl D English, Helder B Jacob, Lacey M Harris, F Kurtis Kasper, Harry I Bussa, Ryan L Quock
PURPOSE: To evaluate if pre-treatment with silver diamine fluoride (SDF) adversely affects the bond strength of orthodontic brackets to enamel. METHODS: 30 extracted non-carious permanent molar teeth were embedded in acrylic resin cylinders with buccal surfaces exposed and randomly divided equally into two groups. The experimental enamel surfaces were treated with 38% SDF applied for 1 minute between phosphoric acid etch and metal orthodontic bracket bonding with Transbond XT Light Cure Adhesive...
December 2018: American Journal of Dentistry
Gustavo Frainer Barbosa, Marielle Braff Cardoso
PURPOSE: To evaluate the effect of four distinct carbonated beverages on the color stability of two resin composites, microhybrid and nanofilled, from the same manufacturer but with different inorganic filler compositions and different finishing and polishing methods. METHODS: A total of 150 specimens were prepared in microhybrid (n= 75) and nanofilled (n= 75) resin composites, with the color shade A2E. The samples, subdivided into groups (n = 25), underwent different surface treatments: G1, a sequence of sandpaper discs; G2, universal polishing paste; and G3, disc sequence, and polishing paste...
December 2018: American Journal of Dentistry
Sean S Lee, Montry S Suprono, Joni Stephens, Shelly A Withers, Yiming Li
PURPOSE: To evaluate the efficacy of a mouthwash containing stabilized chlorine dioxide in reducing oral malodor when used as an adjunct to tooth brushing compared with the use of a placebo mouthwash. METHODS: This 8-week study in healthy subjects with clinically diagnosed intrinsic oral malodor was a 2-way crossover, double-blind, randomized, and controlled trial design, which was conducted at a single site. Subjects were randomized to receive either unflavored, non-fluoridated, and alcohol-free mouthwash containing 0...
December 2018: American Journal of Dentistry
Marina Gullo Augusto, Alessandra Bühler Borges, César Rogério Pucci, Mariane Cintra Mailart, Carlos Rocha Gomes Torres
PURPOSE: To investigate the effects of whitening toothpastes over the wear and surface roughness of ormocer and methacrylate composites. METHODS: Cylindrical specimens (n=120) were prepared using methacrylate-based composites (Filtek Z350 XT, TPH3 and GrandioSO) and a pure-ormocer composite (Admira Fusion). Brushing abrasion (100,000 strokes) was performed using whitening toothpastes containing different abrasives: alumina (Colgate Ultrawhite), perlite (CloseUp Whitening) and sodium bicarbonate (Kin Progressive Whitening)...
December 2018: American Journal of Dentistry
Chad J Anderson, Gerard Kugel, Robert Gerlach
PURPOSE: To compare the desensitizing effects of two different marketed professional dentin hypersensitivity treatments, a 5% sodium fluoride varnish and an oxalic acid/potassium salt solution, in a single-center, randomized, controlled, subject-blind pilot study. METHODS: A total of 22 subjects with dentin hypersensitivity on at least two teeth were recruited from a general dentistry practice and randomized 1:1 to treatment with a 5% sodium fluoride varnish (Acclean Fluoride Varnish) group or a 3% oxalic acid/potassium salt solution (Super Seal Desensitizer)...
December 2018: American Journal of Dentistry
Marilia Mattar de Amoêdo Campos Velo, Ana Carolina Magalhães, Aymee Shiota, Ana Laura Herrera Farha, Larissa Tercilia Grizzo, Heitor Marques Honório, Linda Wang
PURPOSE: This in vitro study was conducted in two regimens hypothesizing that high-fluoride (F) toothpaste (5,000 µg F/g) with or without functionalized tri-calcium phosphate (f TCP) would provide additional protection against (1) root caries development and (2) progression. For both regimens, bovine root dentin specimens were used. METHODS: In regimen 1, 60 specimens were subjected daily to alternate immersions between demineralizing and remineralizing solutions for 7 days...
December 2018: American Journal of Dentistry
Carlos Rocha Gomes Torres, Gabrielle Costa Bonício, Érica Crastechini, Mariane Cintra Mailart, Alessandra Bühler Borges
PURPOSE: To evaluate the effect of whitening mouthrinses used before toothbrushing on enamel microhardness and wear. METHODS: 80 polished bovine enamel specimens were randomly assigned into four groups according to the mouthrinses tested (n=20): PW: Plax Whitening - 1.5% hydrogen peroxide (HP); LW: Listerine Whitening Pre-Brush Rinse - 2% HP; U: Ultradex - Chlorine dioxide; C: Control - Artificial saliva. The specimens were immersed in the mouthrinses for 1 minute and brushed with 10 strokes, using a dentifrice containing sodium fluoride...
December 2018: American Journal of Dentistry
Soraia Monique Fiorati-Aguiar, Marília Pacífico Lucisano, Léa Assed Bezerra da Silva, Raquel Assed Bezerra da Silva, Augusto César Cropanese Spadaro, Maria Cristina Borsatto, Paulo Nelson-Filho
PURPOSE: To evaluate, in vitro, mechanical, chemical and antimicrobial properties of Embrace Wetbond bisphenol A (BPA)-free pit-and-fissure sealant. METHODS: For the shear bond strength and microleakage tests, 135 healthy third molars were randomly divided into six groups, according to sealant [Fluroshield (FS) and Embrace Wetbond (EWB)] and contamination conditions (no contamination, contamination with saliva and contamination with water). In addition, EWB sealant was subjected to the following analyses: fluoride release using direct potentiometry, antimicrobial activity using the agar well diffusion method and quantification of BPA using gas chromatography and mass spectrometry...
December 2018: American Journal of Dentistry
Marco Ferrari, Andrew Keeling, Federico Mandelli, Giuseppe Lo Giudice, Franklin Garcia-Godoy, Tim Joda
PURPOSE: To assess the clinical ability of marginal detection of different intraoral optical scanning (IOS) systems. METHODS: The Ethics Committee of the University of Siena, Italy approved the research project. Thirty patients in need of an onlay/inlay with supra-gingival margins were included and randomly divided in three groups of 10 (3× n=10) according to the IOS for chairside capturing:(A) GC-Europe (Aadva); (B) True-Definition-TD; (C) Trios. A total of 1 scans from each IOS test group (A-C), were obtained clinically and stored as STL-files...
October 2018: American Journal of Dentistry
Felice Femiano, Rossella Femiano, Luigi Femiano, Giuliano Aresu, Vicenzo Maria Festa, Rosario Rullo, Letizia Perillo
PURPOSE: To evaluate the effectiveness of low-level laser therapy (LLLT) on dental pain felt during cavity preparation of carious lesions in permanent teeth of adults. METHODS: The study was carried out on 88 teeth with dental caries requiring class I restorations in 24 subjects with a pain score ≥ 7 but < 10 measured using a 0-10 visual analogue scale (VAS) in a preliminary test of pain threshold (PTPT) for each subject receiving a class I cavity preparation on another tooth without local anesthesia...
October 2018: American Journal of Dentistry
Débora Martini Dalpian, Caroline Sala Gallina, Gabriel Ferreira Nicoloso, Marcos Britto Correa, Franklin Garcia-Godoy, Fernando Borba de Araujo, Luciano Casagrande
PURPOSE: To evaluate the longevity and factors associated with failure of primary teeth restorations placed in high caries-risk children. METHODS: The sample was comprised of children treated in a University Dental Service. Patients' records were screened retrospectively to determine whether they had received restorative treatment in primary teeth presenting cavitated caries lesions. Kaplan-Meier estimator and Multivariate Cox regression analysis with shared frailty were used to assess restorations' survival and factors associated with failure, respectively...
October 2018: American Journal of Dentistry
Marwa Abdelaziz, Adele Lodi-Rizzini, Tissiana Bortolotto, Franklin Garcia-Godoy, Albert Joseph Feilzer, Ivo Krejci
PURPOSE: To compare a new technique of non-invasive proximal adhesive restoration (NIPAR) to the infiltration concept technique (ICON). METHODS: Extracted human posterior teeth with non-cavitated proximal carious lesions (ICDAS code 1-2) were cut vertically to obtain two symmetrical lesions. Group 1 (NIPAR):Half of the paired lesions surfaces (n=13) were abraded with metallic strips and etched with 37% H3PO4 for 120 seconds. Group 2 (ICON):The other half of the paired lesions' surfaces (n=13) were etched with 15% HCl gel for 120 seconds...
October 2018: American Journal of Dentistry
Mustafa Borga Dönmez, Munir Tolga Yucel, Ismail Kilic, Yener Okutan
PURPOSE: To compare the influence of various surface treatments on the shear bond strength and surface roughness of lithium disilicate glass-ceramics. METHODS: 60 lithium disilicate ceramic samples were prepared according to the manufacturers' instructions and were divided into six groups according to the surface treatment:Control (C), 5% HF etching for 20 and 60 seconds (E20, E60), Monobond Etch & Prime etching (MEP), Nd:YAG (ND) and Er:YAG (ER) laser irradiation...
October 2018: American Journal of Dentistry
Marwa Abdelaziz, Adele Lodi-Rizzini, Tissiana Bortolotto, Franklin Garcia-Godoy, Albert Joseph Feilzer, Ivo Krejci
PURPOSE: To investigate the infiltration potential of different self-etch adhesives into natural non-cavitated proximal lesions and the effect of dehydration protocol on the infiltration of a self-etch adhesive. METHODS: 29 extracted molars and premolars with natural proximal lesions (ICDAS 1-2) were sectioned through the lesion providing two samples from each lesion. To compare the different adhesives, three groups of eight lesions were abraded with fine metallic strips and then etched with 37% H3PO4 acid for 120 seconds...
October 2018: American Journal of Dentistry
Renata Vasconcelos Monteiro, Sylvio Monteiro, Mauro Amaral Caldeira de Andrada
PURPOSE: To evaluate the bleaching efficacy and time required for color stability immediately after dental office bleaching. METHODS: 40 subjects were randomly divided into two groups, according to the bleaching agent used:GHP - 35% hydrogen peroxide gel and GCP - 37% carbamide peroxide gel. The color was measured with a spectrophotometer before and immediately, 24 hours, 72 hours, 7 days and 15 days after the bleaching procedure. The color parameters were evaluated and the ΔE*, ΔL*, Δa* and Δb* values were calculated for each evaluation period...
October 2018: American Journal of Dentistry
Rosario Rizzo, Domenico Tripodi, Flavia Iaculli, Adriano Piatelli, Giovanna Iezzi, Vittoria Perrotti, Simonetta D'Ercole
PURPOSE: To investigate whether the interposition of a sealing-connector was able to reduce the bacterial leakage in external hexagon implants. METHODS: 20 implants with external hexagon connection were used. Ten Test implant-abutment assemblies were connected with the interposition of a sealing-connector molded in the exact shape of the two opposed surfaces. Ten Control implant-abutment assemblies were connected with no sealing-connector interposed. Two types of bacteria were introduced into the internal portion of the implant, before placing the connector...
October 2018: American Journal of Dentistry
Annette Dalrymple, Thomas C Badrock, Anya Terry, Mark Barber, Peter J Hall, David Thorne, Marianna D Gaca, Steven Coburn, Christopher Proctor
PURPOSE: To evaluate in vitro enamel sample discoloration following exposure to a scientific reference cigarette (3R4F) or emissions from next generation tobacco and nicotine products (NGPs) such as electronic cigarettes (EC) and tobacco heating products (THP). METHODS: Bovine enamel blocks (6.5 × 6.5 mm) were prepared and pre-incubated with human or artificial saliva, to form a pellicle layer before exposure to either particulate matter (PM) or whole aerosols...
October 2018: American Journal of Dentistry
Sancai Xie, John Christian Haught, Cheryl S Tansky, Malgorzata Klukowska, Ping Hu, David L Ramsey, Ben Circello, Tom G Huggins, Donald J White
PURPOSE: This study expanded the analysis of subgingival dental plaques from previous research to include the evaluation of cohort, site and treatment effects on chemically measured endotoxin and activation of Toll-like receptor (TLR) based gene expression in two additional reporter cell lines: a TLR2 specific cell line and a THP-1 (multi TLR reporter) cell line. METHODS: Participants from high and low bleeding cohorts were sampled at baseline for both supra and subgingival dental plaque at both healthy as well as clinically diseased sites and then provided with intervention hygiene products including a stabilized SnF₂ dentifrice and a new soft bristle manual toothbrush...
August 2018: American Journal of Dentistry
Mustafa Hayati Atala, Gülbahar Ustağlu, Nagehan Atala, Elif Yeğin
PURPOSE: To evaluate the tooth discoloration effect of the daily use protocol of six different mouthrinses. METHODS: 70 extracted caries-free central incisors were divided into seven groups (n=10/per group) : Group 1: Curasept Anti Discoloration System; Group 2: CB12; Group 3: Listerine Zero; Group 4: Listerine Cool Mint; Group 5: Colgate Plax; Group 6: Kloroben. The teeth were exposed to the mouthrinse for 2 minutes daily for 3 weeks. Color measurement was performed four times: at the beginning of the study, and after 1, 2 and 3 weeks, with a digital spectrophotometer (Vita Easyshade Advanced)...
August 2018: American Journal of Dentistry
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