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Journal of Dentistry

Bianca Medeiros Maran, Laína Vochikovski, Diego Rafael de Andrade Hortkoff, Rodrigo Stanislawczuk, Alessandro D Loguercio, Alessandra Reis
OBJECTIVES: Desensitizing agents are usually included in the composition of bleaching agents to reduce bleaching-induced tooth sensitivity (TS). This randomized clinical trial (RCT) evaluated the risk and intensity of TS and color change after at-home bleaching with a desensitizing-containing (3% potassium nitrate and 0.2% sodium fluoride) and desensitizing-free 10% carbamide peroxide (CP) gel (Whiteness Perfect, FGM). METHODS: A triple-blind, within-person RCT was conducted on 60 caries-free adult patients...
March 15, 2018: Journal of Dentistry
Rose Sear, Jeremy Rees, Zairah Buller, Simon C Moore
OBJECTIVES: To assess the feasibility of using short message service text messages to solicit dental patients' experiences of post-operative dental discomfort and sensitivity (PODDS) and whether responses characterise change in PODDS over time. METHODS: Patients were recruited from clinics following routine dental procedures, such as simple restorations or root surface debridement. They completed a short questionnaire collecting information on socio-economic circumstances, their recent experience of PODDS, the acceptability of receiving text message questions and their telephone number...
March 15, 2018: Journal of Dentistry
Elsa Garot, Alice Denis, Yves Delbos, David Manton, Mihiri Silva, Patrick Rouas
OBJECTIVES: Molar Incisor Hypomineralisation (MIH) and Hypomineralised Second Primary Molars (HSPM) involve qualitative structural developmental anomalies of tooth enamel affecting the first permanent molars (and often incisors) and the second primary molars, respectively. A putative relationship between HSPM and MIH has been reported in the scientific literature. The aim was to determine whether children with HSPM are more likely to develop MIH. SOURCE: A systematic search using PubMed/Medline, Embase and Cochrane Library electronic databases for publications from 2001 to August 2017 investigating the link between MIH and HSPM was undertaken...
March 14, 2018: Journal of Dentistry
Yan Liu, Ling Zhang, Li-Na Niu, Tao Yu, Hockin H K Xu, Michael D Weir, Thomas W Oates, Franklin R Tay, Ji-Hua Chen
OBJECTIVES: To evaluate the bonding performance, antibacterial activity, and remineralization effect on enamel of the orthodontic adhesive containing MAE-DB and NACP. METHODS: Eighty non-carious human premolars were divided into 3 groups: Transbond XT (TB), PEHB + 5% MAE-DB (PD), and PEHB + 40% NACP + 5% MAE-DB (PND). Premolars were bonded with orthodontic brackets, the first subgroup (n = 10) and the second subgroup (n = 10) were subjected to shear bond strength testing after immersed in water for 1 day and in demineralization solution for 28 days respectively and then tested surface roughness, while the third subgroup (n = 6) was used for microhardness evaluation after aged in demineralization solution for 28 days...
March 10, 2018: Journal of Dentistry
Yousif A Al Dulaijan, Lei Cheng, Michael D Weir, Mary Anne S Melo, Huaibing Liu, Thomas W Oates, Lin Wang, Hockin H K Xu
OBJECTIVE: Rechargeable calcium phosphate (CaP) composites were developed recently. However, none of the rechargeable CaP composites was antibacterial. The objectives of this study were to develop the first rechargeable CaP composite that was antibacterial, and to investigate the effects of adding dimethylaminohexadecyl methacrylate (DMAHDM) into rechargeable CaP composite on ion rechargeability and re-release as well as biofilm properties. METHODS: DMAHDM was synthesized via a Menschutkin reaction...
March 8, 2018: Journal of Dentistry
Karim Elhennawy, Haitham Askar, Paul-Georg Jost-Brinkmann, Seif Reda, Allam Al-Abdi, Sebastian Paris, Falk Schwendicke
OBJECTIVES: To assess the accuracy of near-infrared-light transillumination (DIAGNO) compared to visual-tactile (VT) and radiographic (RA) evaluation of proximal carious lesions adjacent to composite restorations in vitro. METHODS: Two hundred extracted posterior permanent human teeth with occluso-proximal composite restorations were allocated to 50 groups of four posterior teeth, and mounted in a pilot-tested diagnostic model in a dummy head. Teeth were independently assessed by two examiners...
March 8, 2018: Journal of Dentistry
Dena Eltahlah, Christopher D Lynch, Barbara L Chadwick, Igor R Blum, Nairn H F Wilson
AIM: The aim of this study was to review patterns of restoration placement and replacement. A previous study had been carried out in the late 1990s and this study sought to update the literature in this important aspect of dental practice. METHOD: Studies based on the protocol of Mjör (1981) were selected. Such studies involved participating dentists completing a proforma each time a patient presented for a new or replacement restoration. RESULTS: Twenty-five papers were included in this study, of which 12 were included in the original review...
March 6, 2018: Journal of Dentistry
Sevcan Kurtulmus-Yilmaz, Huseyin Aktore
OBJECTIVES: To evaluate the effects of airborne-particle abrasion (APA) and Er,Cr:YSGG laser irradiation on 4-point-flexural strength, phase transformation and morphologic changes of zirconia ceramics treated at pre-sintered or post-sintered stage. METHODS: Three hundred and forty-two bar shaped zirconia specimens were milled with different sizes according to the flexural strength test (n = 10), X-ray diffraction (XRD) (n = 4) and field emission scanning electron microscope (FE-SEM) (n = 4) analyses...
March 1, 2018: Journal of Dentistry
Georgios S Chatzopoulos, Vasiliki P Koidou, Scott Lunos, Larry F Wolff
OBJECTIVES: To assess and compare the survival rates of implant and root canal treatment as well as to investigate the effect of patient and tooth related variables on the treatment outcome in a large-scale population-based study. METHODS: Dental records of patients who received root canal treatment and implant therapy were retrieved from the electronic records of the University of Minnesota School of Dentistry. Demographic characteristics, dental insurance status, socioeconomic status as well as medical history and tobacco use were recorded...
February 27, 2018: Journal of Dentistry
Conor McLister, Michael Donnelly, Christopher R Cardwell, Ciaran Moore, Ciaran O'Neill, Paul Brocklehurst, Gerald McKenna
OBJECTIVES: A systematic review of randomised and non-randomised controlled trials was conducted to evaluate studies of the effectiveness of different tooth replacement strategies in adult patients with shortened dental arches. The objectives of the review were to determine the survival rates of different prosthodontic interventions, the risk of tooth loss with and without prosthodontic interventions, and the impact of different tooth replacement strategies on oral-health related quality of life (OHRQoL)...
February 21, 2018: Journal of Dentistry
Mikako Hayashi, Tomomi Yamada, Christopher D Lynch, Nairn H F Wilson
OBJECTIVES: The teaching of posterior composites has been a major part of the curriculum in Japanese dental education for several decades. The aim of this paper was to investigate the current trends in the teaching of posterior composites to undergraduate dental students in Japan by comparing the results of surveys conducted for over 30 years. METHODS: In late 2016-early 2017, a questionnaire seeking information on the teaching of posterior composites was distributed via e-mail to the persons responsible for teaching operative dentistry in 29 dental schools having undergraduate dental degree programs in Japan...
February 20, 2018: Journal of Dentistry
Jing Zhang, Richard J M Lynch, Timothy F Watson, Avijit Banerjee
OBJECTIVE: To investigate the remineralisation of chitosan pre-treated enamel white spot lesions (WSLs) by bioglass in the presence of the pellicle layer. METHODS: 50 artificial enamel white spot lesions were created by acidic gel. Two lesions were used to investigate the formation of the pellicle layer by treating with human whole saliva for 3 minutes. 48 lesions were assigned to 6 experimental groups (n = 8): (1) bioactive glass slurry, (2) bioactive glass containing polyacrylic acid (BG + PAA) slurry, (3) chitosan pre-treated WSLs with BG slurry (CS-BG), (4) chitosan pre-treated WSLs with BG + PAA slurry (CS-BG + PAA), (5) "standard" remineralisation solution (RS) and (6) de-ionised water (negative control, NC)...
February 20, 2018: Journal of Dentistry
Torbjørn Leif Hansen, Christian Schriwer, Marit Øilo, Harald Gjengedal
OBJECTIVES: The aim of this study was to assess the clinical outcomes and patient satisfaction with monolithic zirconia crowns in patients with severe tooth wear (≥1/3 of the tooth crown) in the aesthetic zone. METHODS: The historical prospective study sample consisted of 13 patients previously treated with a total of 84 monolithic zirconia crowns. The patients had been treated in a private clinic in Bergen, Norway, in the period 2012 to 2014. All patients were men, aged 35-67 years (mean age 56...
February 13, 2018: Journal of Dentistry
Cácia Signori, Kauê Collares, Catarina B F Cumerlato, Marcos B Correa, Niek J M Opdam, Maximiliano S Cenci
OBJECTIVES: The aim of this study was to investigate the validity of assessment of intraoral digital photography in the evaluation of dental restorations. METHODS: Intraoral photographs of anterior and posterior restorations were classified based on FDI criteria according to the need for intervention: no intervention, repair and replacement. Evaluations were performed by an experienced expert in restorative dentistry (gold standard evaluator) and 3 trained dentists (consensus)...
February 10, 2018: Journal of Dentistry
Meryem Gülce Subaşı, Gülce Alp, William M Johnston, Burak Yilmaz
OBJECTIVE: To compare the effect of material and thickness on the color stability and relative translucency parameters (RTP) for monolithic ceramics subjected to coffee thermocycling. METHODS: Four specimens each at thicknesses of 0.5, 0,7 and 1 mm were sectioned from monolithic ceramics [preshaded monolithic zirconia (MonZr), lithium disilicate (LDS) and zirconia reinforced lithium silicate (ZLS)]. The specimens were glazed and subjected to 5000 coffee thermocycling...
January 31, 2018: Journal of Dentistry
T T Maske, N K Kuper, A C C Hollanders, E M Bronkhorst, M S Cenci, M C D N J M Huysmans
OBJECTIVES: This in situ study aimed to investigate whether the dentin treatment with MMPs inhibitor (CHX 2%) could influence the development of secondary caries wall lesions in different dentin-composite interfaces. MATERIAL AND METHODS: For 21 days, 15 volunteers wore a modified-occlusal splint loaded with dentin-composite samples treated or not with CHX and restored according 4 different interface conditions: Bonding (B = samples restored with complete adhesive procedure), no bonding (NB = restored with composite resin without adhesive procedure), 100 μm (no adhesive procedure and with intentional gap) and 100 μm + B (adhesive material on composite side and intentional gap)...
January 31, 2018: Journal of Dentistry
Valerie Steiger-Ronay, Andrea Steingruber, Klaus Becker, Arzu Aykut-Yetkiner, Daniel B Wiedemeier, Thomas Attin
OBJECTIVES: Aim of this investigation was to study the temperature-dependent in vitro enamel erosion of five acidic drinks and citric acid under controlled conditions in an artificial mouth. METHODS: The erosive potential of Orange juice, Coca-Cola Zero, Sprite Zero, two fruit teas and citric acid (control) was investigated on bovine enamel specimens at temperatures between 5 °C and 55 °C. The pH values and total calcium content of all test drinks were determined...
January 31, 2018: Journal of Dentistry
Lu Zhang, Hualing Sun, Jian Yu, Hongye Yang, Fangfang Song, Cui Huang
OBJECTIVES: This study aims to apply electrophoretic deposition (EPD) for occlusion of dentinal tubules in vitro and investigate its effect on tubule occlusion and shear bond strength (SBS). METHODS: Charged mesoporous silica nanoparticles (MSNs) were synthesized and characterized through field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), and Fourier transform infrared (FT-IR) spectroscopy analyses...
January 30, 2018: Journal of Dentistry
Ghassan Idris, Barbara Galland, Christopher John Robertson, Andrew Gray, Mauro Farella
OBJECTIVE: To test the short-term effectiveness of a mandibular advancement splint (MAS) for the management of sleep-disordered breathing (SDB) in children. METHODS: Eighteen SDB children were enrolled in a crossover randomized clinical trial and assigned to a treatment sequence starting either with an Active or a Sham MAS. Each appliance was worn for three weeks and treatment periods were separated by a two-week washout. Home-based polysomnographic data were collected before and after each treatment period...
January 29, 2018: Journal of Dentistry
E Zain, C Zakian, H P Chew
OBJECTIVE: The main objective of this study was to evaluate the accuracy of optical coherence tomography (OCT) in detecting naturally occurring non-cavitated fissure caries (NCFC) in totality and at different loci by visually assessing cross-sectional OCT scans (B-scan) with an interpretation criterion. The secondary objective was to evaluate the agreement between dimensions of NCFC measured with OCT and polarized light microscopy (PLM). METHODS: 71 investigation sites of sound fissure and naturally occurring NCFC on human extracted premolars were identified and scanned with a swept-source OCT...
January 26, 2018: Journal of Dentistry
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