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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
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
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
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
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
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
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
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
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
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
Pejmon Amini, Alborz Amini, Robert W Gerlach
PURPOSE: A randomized controlled trial was conducted to evaluate the clinical efficacy of a two-step dentifrice/whitening gel oral hygiene sequence on natural gingivitis and extrinsic stain. METHODS: The population consisted of healthy adults with clinical evidence of gingivitis and extrinsic stain. Consent, demographic information and clinical measurements were collected, after which subjects were randomized to treatment. Eligible subjects were dispensed blinded test kits containing over-labeled two-step 0...
July 2018: American Journal of Dentistry
Robert W Gerlach, Paul A Sagel
PURPOSE: Health-related outcomes from three randomized controlled trials represented the initial research on the feasibility of novel, sequential oral hygiene with a stannous fluoride (SnF₂) dentifrice then hydrogen peroxide (H₂O₂) whitening gel. METHODS: One crossover and two parallel clinical trials were conducted independently. Objectives varied, with individual studies assessing short, intermediate or longer-term outcomes from breath, dental plaque or gingivitis, respectively...
July 2018: American Journal of Dentistry
Paul A Sagel, Robert W Gerlach
PURPOSE: Recently, a unique two-step product was introduced that includes sequential use of a novel 0.454% stannous fluoride dentifrice followed by a 3% hydrogen peroxide whitening gel. The technology targeted advanced gingival health benefits plus esthetic benefits such as tooth whitening. The two-step sequence has unique brushing instructions to maximize the efficacy of each step; the stannous fluoride dentifrice is used for 1 minute of brushing followed by 1 minute of brushing with the hydrogen peroxide gel...
July 2018: American Journal of Dentistry
Franklin Garcia-Godoy
No abstract text is available yet for this article.
July 2018: American Journal of Dentistry
Kevin J Donly, Jungyi Alexis Liu
PURPOSE: To examine the in vitro caries inhibition of a resin-modified glass-ionomer cement, and a fluoride and calcium releasing resin-based composite. METHODS: Standardized Class V preparations were placed in 30 molars, the gingival margin placed below the cemento-enamel junction. Randomly, 10 Vitremer, 10 Z 100 and 10 Cention N restorations were placed according to manufacturer's instructions, in 30 teeth. The Z 100 non fluoride-releasing resin-based composite group acted as the control...
June 2018: American Journal of Dentistry
Manuel Toledano-Osorio, Inmaculada Cabello, Christopher D Lynch, Fatima S Aguilera
PURPOSE: To evaluate if mechanical and thermal cycling promote remineralization at the resin-dentin interface after bonding with three different adhesive approaches. METHODS: Dentin surfaces were subjected to three different treatments: demineralization (1) by 37% phosphoric acid followed by application of an etch-and-rinse dentin adhesive Single Bond (Adper Single Bond) (SB); (2) by 0.5 M ethylenediaminetetraacetic acid (EDTA) followed by SB; (3) application of a self-etch dentin adhesive: Clearfil-SEB (Clearfil SE Bond)...
June 2018: American Journal of Dentistry
Linfeng Wu, Feng Li, Brian R Morrow, Sibo Jiang, Timothy L Hottel, Franklin Garcia-Godoy, Liang Hong
PURPOSE: To investigate the feasibility of exploiting amorphous calcium phosphate (ACP) formed in situ from chitosan calcium microspheres and phosphate ions in water during brushing for caries control. METHODS: A prototype toothpaste, namely Chi-ACP paste, was specially formulated containing CaCl₂/chitosan microspheres. The efficiency of Chi-ACP paste for remineralization on human tooth enamel was evaluated via an in vitro pH cycling approach. After 15 demineralization/remineralization cycles, the treated teeth were analyzed using scanning electron microscope (SEM) /energy dispersive X-ray spectroscopy (EDX), and polarized light microscope (PLM)...
June 2018: American Journal of Dentistry
Mariane Cintra Mailart, Rafael Santos Rocha, Sheila Celia Mondragón Contreras, Carlos Rocha Gomes Torres, Alessandra Bühler Borges, Taciana Marco Ferraz Caneppele
PURPOSE: To evaluate the color stability of bulk-fill resin composites (RC) in comparison to conventional RC submitted to artificial staining. METHODS: 15 specimens of each RC were prepared. Five bulk-fill RC [X-tra Base (XB), Filtek Bulk-Fill Flowable (FBF), Admira Fusion X-tra (AD), Tetric N-Ceram Bulk-Fill (TB), and Filtek Bulk-Fill (FB) ], and two conventional RC [GrandioSO (GO) and Filtek Z350XT (FXT) ] were used. After preparation of the samples, the specimens were immersed in a staining broth for 5 weeks and repolished...
June 2018: American Journal of Dentistry
Nicola Discepoli, Edoardo Ferrari Cagidiaco, Giulia Landini, Lucia Pallecchi, Franklin Garcia-Godoy, Marco Ferrari
PURPOSE: To compare the sealing effectiveness of four different implant-abutment connections against Staphylococcus aureus (S. aureus). The null hypotheses stated that there was no difference on sealing ability among the implant-abutment connections tested. METHODS: Five diverse commercially available dental implants were used to investigate the degree of microleakage at the implant-abutment junction (IAJ): Group 1: Torque Type conical implant with double conic connection - TTc (Winsix); Group 2: Torque Type conical implant with Cone Morse connection - TTcm (Winsix); Group 3: Free Lock connection - K type implant (Winsix); Group 4: Internal double hexagon - OsseoSpeed; Group 5: Internal hexagon - Aadva Implant...
June 2018: American Journal of Dentistry
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