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American Journal of Dentistry

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https://www.readbyqxmd.com/read/30346675/the-ability-of-marginal-detection-using-different-intraoral-scanning-systems-a-pilot-randomized-controlled-trial
#1
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
https://www.readbyqxmd.com/read/30346674/effectiveness-of-low-level-diode-laser-therapy-on-pain-during-cavity-preparation-on-permanent-teeth
#2
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
https://www.readbyqxmd.com/read/30346673/patient-and-treatment-related-factors-may-influence-the-longevity-of-primary-teeth-restorations-in-high-caries-risk-children-a-university-based-retrospective-study
#3
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
https://www.readbyqxmd.com/read/30346672/non-invasive-proximal-adhesive-restoration-nipar-compared-to-resin-infiltration-for-treating-initial-proximal-carious-lesions
#4
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
https://www.readbyqxmd.com/read/30346671/novel-ceramic-primer-vs-conventional-treatment-methods-effects-on-roughness-and-bond-strength-of-all-ceramic-restorations
#5
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
https://www.readbyqxmd.com/read/30346670/non-invasive-proximal-adhesive-restoration-of-natural-non-cavitated-proximal-lesions
#6
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
https://www.readbyqxmd.com/read/30346669/clinical-evaluation-of-two-in-office-dental-bleaching-agents
#7
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
https://www.readbyqxmd.com/read/30346668/bacterial-leakage-in-external-hexagon-implants-with-and-without-the-interposition-of-a-sealing-connector
#8
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
https://www.readbyqxmd.com/read/30346667/assessment-of-enamel-discoloration-in-vitro-following-exposure-to-cigarette-smoke-and-emissions-from-novel-vapor-and-tobacco-heating-products
#9
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
https://www.readbyqxmd.com/read/30106539/clinical-effects-of-stannous-fluoride-dentifrice-in-reducing-plaque-microbial-virulence-iii-lipopolysaccharide-and-tlr2-reporter-cell-gene-activation
#10
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
https://www.readbyqxmd.com/read/30106538/effect-of-different-mouthwashes-on-discoloration-of-plaque-free-tooth-surfaces
#11
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
https://www.readbyqxmd.com/read/30106537/effect-of-thermal-cycling-on-fracture-toughness-of-cad-cam-materials
#12
Thiago Soares Porto, Renato Cassio Roperto, Anna Akkus, Ozan Akkus, Sorin Teich, Fady F Faddoul, Sizenando de Toledo Porto-Neto, Edson Alves de Campos
PURPOSE: To compare the fracture toughness of four different CAD/CAM materials, (VM) Vitablocs Mark II, (IP) IPS e.max CAD, (LU) LAVA Ultimate, and (VE) Vita Enamic under long thermocycling conditions. METHODS: Each type of ceramic block was sectioned into beams (n=9) with dimensions of 14×3×2.5 mm (L × W × H). All four ceramics were submitted to different conditions: the desiccator or distilled water, each for 7 days. The third and fourth conditions involved the specimens being submitted to 60,000 and 120,000 thermocycles in water respectively...
August 2018: American Journal of Dentistry
https://www.readbyqxmd.com/read/30106536/surface-treatments-to-improve-the-repair-of-acrylic-and-bis-acryl-provisional-materials
#13
Thais Marques Simek Vega Gonçalves, Karla Nunes Teixeira, Julia Meller Dias de Oliveira, Lorena Tavares Gama, Sergio Bortolini, Analucia Gebler Philippi
PURPOSE: To evaluate the in vitro effects of the Composite Primer and different surface treatments on the shear bond strength (SBS) of acrylic and bis-acryl repairs with resin composite (RC). METHODS: Acrylic (Alike) and bis-acryl (Protemp 4) blocks were prepared. Surface roughness was standardized (0.16 µm) and grit blasting was applied to half of the samples. Blocks were divided randomly into groups according to surface treatment [methyl methacrylate monomer (MMA) for 180 seconds or bonding agents (Composite Primer and Scotchbond Multi Purpose), applied alone or following MMA]...
August 2018: American Journal of Dentistry
https://www.readbyqxmd.com/read/30106535/efficacy-of-ibuprofen-and-codeine-paracetamol-to-reduce-immediate-bleaching-sensitivity-caused-by-in-office-tooth-bleaching-a-randomized-controlled-double-blind-clinical-trial
#14
Samila Neres de Oliveira, Isauremi Vieira de Assunção, Boniek Castillo Dutra Borges
PURPOSE: To evaluate (1) the efficacy of Ibuprofen and codeine + paracetamol to control immediate bleaching sensitivity caused by in-office tooth bleaching performed with 35% hydrogen peroxide, and (2) tooth shade change caused by 35% hydrogen peroxide. METHODS: In this randomized, controlled and double blind clinical trial, 60 volunteers were divided into three treatment groups: 400 mg placebo (PL)(n=20), 400 mg ibuprofen (IB)(n=20), or 30 mg codeine + 500 mg paracetamol (CP)(n=20)...
August 2018: American Journal of Dentistry
https://www.readbyqxmd.com/read/30106534/randomized-clinical-trial-to-determine-if-changes-in-dentin-tubule-occlusion-visualized-by-sem-of-replica-impressions-correlate-with-pain-scores
#15
Joon Seong, Maria Davies, Emma L Macdonald, Nicholas Ca Claydon, Nicola X West
PURPOSE: To quantify dentin tubule occlusion and correlate this with pain reduction in vivo. METHODS: This was a single-center, randomized two treatment, examiner-blind, parallel study. 20 participants with confirmed dentin hypersensitivity (DH) were evaluated by Schiff Air Blast, VAS Air Blast and replica impression of the tooth surface to visualize tubule occlusion at baseline and following 4-week twice daily use of either an occluding toothpaste (8% strontium acetate, 1,040 ppm fluoride) or a non-occluding toothpaste (1,450 ppm fluoride)...
August 2018: American Journal of Dentistry
https://www.readbyqxmd.com/read/30106533/subgingival-uptake-and-retention-of-stannous-fluoride-from-dentifrice-gingival-crevicular-fluid-concentrations-in-sulci-post-brushing
#16
Malgorzata A Klukowska, Niranjan Ramji, Chelsea Combs, Jeffery L Milleman, Kimberly R Milleman, David L Ramsey, Usa Rattanaudompol, Christina Haven, Denise McClenathan, Donald J White
PURPOSE: To examine the delivery of stannous fluoride to subgingival sulci following toothpaste use in a clinical population. METHODS: This was a controlled, single-site study. 23 subjects with at least 20 dental pockets, 2-4 mm with bleeding, who had not used a stannous fluoride dentifrice in the last 3 months were enrolled. After a 2-week washout period, 20 subjects returned for a baseline visit. They were instructed to refrain from brushing the night before the baseline visit...
August 2018: American Journal of Dentistry
https://www.readbyqxmd.com/read/30106532/effect-of-desensitizing-toothpastes-on-dentin-erosive-wear-and-tubule-occlusion-an-in-situ-study
#17
Raquel Marianna Lopes, Tais Scaramucci, Ana Cecilia Corrêa Aranha
PURPOSE: To evaluate the effect of desensitizing dentifrices on dentin wear and tubule occlusion using a three-phase, single blind, crossover in situ trial. METHODS: The dentifrices containing Arginine and calcium carbonate (1,450 ppmF) and Novamin, (~1,426 ppmF) were tested in two conditions: A: abrasion and B: erosion/abrasion. A dentifrice without desensitizing agents was used as control (1,450 ppmF). In each study phase, 10 volunteers used intra-oral appliances containing dentin specimens (pre-treated with EDTA, to simulate hypersensitive dentin), which were either submitted to erosion with a cola-like drink (pH 2...
August 2018: American Journal of Dentistry
https://www.readbyqxmd.com/read/30106531/a-6-month-clinical-evaluation-of-a-high-frequency-sonic-toothbrush-in-comparison-with-an-oscillating-rotating-power-toothbrush-and-a-traditional-sonic-toothbrush-in-reducing-gingivitis-and-plaque
#18
Jing Lv, Bing Guo, Junqi Ling
PURPOSE: To compare the 6-month clinical efficacy of a novel high frequency sonic power toothbrush (A) with an oscillating-rotating (O-R) power toothbrush (B) and a traditional sonic toothbrush (C) in reducing plaque and gingivitis. METHODS: This was a single-center, randomized, examiner-blind, parallel group design consisting of two two-treatment sub-trials. Gingivitis was assessed using the Modified Gingival Index (MGI) and Gingival Bleeding Index (GBI). Plaque was assessed using the Rustogi Modified Navy Plaque Index (RMNPI) at Baseline, Month 3, and Month 6...
August 2018: American Journal of Dentistry
https://www.readbyqxmd.com/read/30106530/safety-and-effectiveness-of-a-two-step-dentifrice-gel-sequence-with-medication-associated-hyposalivation-a-randomized-controlled-trial-in-a-vulnerable-population
#19
Mabi Singh, Athena Papas, Robert W Gerlach
PURPOSE: A randomized controlled trial was conducted to evaluate the safety and effectiveness of a two-step dentifrice/gel oral hygiene sequence in a vulnerable population. METHODS: Prior to the research, institutional review was obtained for the protocol, consent and advertising. The study targeted adults with medication-associated xerostomia, because of the plaque accumulation and possible oral safety risks seen in this population. Eligible subjects with a medication history and measured hyposalivation were randomly assigned to one of two oral hygiene groups:(1) a two-step 0...
July 2018: American Journal of Dentistry
https://www.readbyqxmd.com/read/30106529/post-prophylaxis-gingivitis-prevention-with-two-step-stannous-fluoride-dentifrice-plus-whitening-gel-sequence-or-chlorhexidine-gluconate-mouthrinse
#20
Cristina Garcia-Godoy, James Rothrock, Nataliya Gurich, Mary Kay Anastasia, Robert W Gerlach
PURPOSE: To assess use of a two-step dentifrice/gel sequence versus chlorhexidine gluconate mouthrinse on gingivitis prevention after dental prophylaxis. METHODS: A 12-week, randomized controlled trial was conducted to compare the effectiveness and safety of a two-step dentifrice/gel sequence to a positive control in healthy adults with established gingivitis. After informed consent, gingivitis and stain levels were assessed by clinical examination. Eligible subjects received a dental prophylaxis and were randomly assigned to twice daily unsupervised use of either (1) two-step oral hygiene sequence:0...
July 2018: American Journal of Dentistry
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