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Journal of Dentistry

Claudia Tschammler, David Zimmermann, Sarah Batschkus, Annette Wiegand, Kristian Folta-Schoofs
OBJECTIVES: This study aimed to analyse if children with untreated or treated caries (restorations/missing teeth) are perceived differently compared to children with healthy teeth and to explore possible differences in the perception by laypersons and dental experts. METHODS: Eye movements of female experts (n = 20) and laypersons (n = 18) were recorded by eye-tracking while paired images (neutral expression/teeth not visible; emotional expression/smiling, teeth visible) of children with healthy teeth, with visible untreated or treated caries (restorations/missing teeth as a consequence of caries treatment), each n = 13, were presented...
May 21, 2018: Journal of Dentistry
Meng-Long Hu, Gang Zheng, You-Dong Zhang, Xiang Yan, Xiao-Chan Li, Hong Lin
OBJECTIVES: To evaluate the desensitizing effect of toothpastes that contain ingredients that act against dentine hypersensitivity (DH) and to compare this effect with negative controls. SOURCES: Five databases were searched to identify relevant articles published up to November 27, 2017. STUDY SELECTION: Randomized controlled trials (RCTs) comparing desensitizing toothpastes with a toothpastes without desensitizing component in adult patients that suffer from DH were included...
May 19, 2018: Journal of Dentistry
Shichao Yue, Junling Wu, Qiang Zhang, Ke Zhang, Michael D Weir, Satoshi Imazato, Yuxing Bai, Hockin H K Xu
OBJECTIVES: Secondary caries at the tooth-restoration margins is a primary reason for restoration failure. Cracks at the margins lead to leakage which can trap bacteria, producing acids to cause caries. To date, there has been no report on developing an adhesive resin that has self-healing, antibacterial and remineralizing capabilities. The objectives of this study were to: (1) develop the first self-healing adhesive with antimicrobial and remineralizing capabilities, and (2) investigate the effects of incorporating microcapsules, dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP) for the first time...
May 18, 2018: Journal of Dentistry
Maria Pfeilschifter, Verena Preis, Michael Behr, Martin Rosentritt
OBJECTIVES: To investigate the edge force of CAD/CAM materials as a function of (a) material, (b) thickness, and (c) distance from the margin. METHODS: Materials intended for processing with CAD/CAM were investigated: eight resin composites, one resin-infiltrated ceramic, and a clinically proven lithiumdisilicate ceramic (reference). To measure edge force (that is, load to failure/crack), plates (d = 1 mm) were fixed and loaded with a Vickers diamond indenter (1 mm/min, Zwick 1446) at a distance of 0...
May 16, 2018: Journal of Dentistry
Brigitte Ohlmann, Wolfgang Bömicke, Yasamin Habibi, Peter Rammelsberg, Marc Schmitter
OBJECTIVES: The purpose of this study was to identify associations between definite sleep bruxism, as defined by the American academy of sleep medicine, and chronic stress and sleep quality. METHODS: Sleep bruxism was determined by use of questionnaires, assessment of clinical symptoms, and recording of electromyographic and electrocardiographic data (recorded by the Bruxoff® device). The study included 67 participants. Of these, 38 were identified as bruxers and 29 as non-bruxers...
May 16, 2018: Journal of Dentistry
H Askar, F Schwendicke, J Lausch, H Meyer-Lueckel, S Paris
OBJECTIVE: Infiltrant resin (IR) is currently indicated for non-cavitated caries lesions. However, modifying the technique might expand its indication spectrum to micro-cavitated lesions. The present study aimed to evaluate the penetration/filling ability of a newly developed micro-filled infiltrant resin (MFIR) in non-, micro- and cavitated natural caries lesions. MATERIALS AND METHODS: Proximal lesions in 120 extracted human teeth with ICDAS-2 (n = 30), 3 (n = 45) and 5 (n = 45) lesions were etched with 15% hydrochloric acid gel for 2 min and allocated to one of the following treatments; IR: lesions (ICDAS-2, 3 and 5; each n = 15) were treated with commercial infiltrant resin for 3 min...
May 16, 2018: Journal of Dentistry
Yasuhiko Kawai, Hiroshi Muarakami, Jocelyne S Feine
OBJECTIVES: The use of a simplified method (S) of fabricating complete dentures has been shown to be more cost-efficient than the traditional method (T), and there are no negative consequences that detract from the cost savings in the short term. However, it is not clear whether this remains constant over a decade. The objective of this study was to clarify patients' perspectives and determine any differences between the dentures fabricated with these two different techniques after a decade of use...
May 11, 2018: Journal of Dentistry
Zhengwei Shao, Xiaojing Guo, Qian Zhang, Ewald M Bronkhorst, Derong Zou, Nico H J Creugers
OBJECTIVES: to assess associations amongst masticatory performance, dental functional status, and perceived chewing problems with common soft and hard foods. MATERIALS AND METHODS: 387 adult participants with reduced natural dentitions were included and underwent an oral examination, completed a written structured questionnaire and performed a two-color chewing gum test for masticatory efficiency. A multivariate regression model was used to analyze associations between masticatory efficiency and a number of dental conditions, with age, gender and perceived chewing difficulties as background variables...
May 10, 2018: Journal of Dentistry
Junsheng Chen, Zhi Li, Beilei Liu, Xueqi Gan, Chunjie Li, Haiyang Yu
OBJECTIVES: This study aimed to compare the reporting quality of randomized controlled trial (RCT) abstracts in prosthodontics before and after the publication of Consolidated Standards of Reporting Trials (CONSORT) guideline for abstracts and identify the characteristics associated with better reporting quality. SOURCES: PubMed was searched for RCT abstracts published from 2001 to 2007 (pre-CONSORT period) and from 2010 to 2016 (post-CONSORT period) in six leading prosthodontic journals...
May 6, 2018: Journal of Dentistry
Rana Alkattan, Frank Lippert, Qing Tang, George J Eckert, Masatoshi Ando
OBJECTIVES: The objectives were to investigate the hardness and chemical composition of sound, demineralized and pH-cycled bovine enamel and determine their influence on demineralization and remineralization behavior. METHODS: Ninety-four, 5 × 5 × 2-mm bovine enamel specimens were demineralized using three different times [(24 h (n = 33), 48 h (n = 30), 96 h (n = 31)]. The specimens were then pH-cycled using either 367 ppm F sodium fluoride or deionized water...
May 5, 2018: Journal of Dentistry
Despina Koletsi, Padhraig S Fleming, Iris Michelaki, Nikolaos Pandis
OBJECTIVES: Heterogeneity describes the percentage of variability across the study effects that can be attributed to between-study differences in a meta-analysis. The aim of this project was to explore the magnitude of heterogeneity in Cochrane and non-Cochrane meta-analyses in orthodontic research and to identify possible associations between heterogeneity (I2 ) and a number of study characteristics including number of studies, type of outcome and type of analysis. METHODS: The contents of five major orthodontic journals and the Cochrane Database of Systematic Reviews were electronically searched from January 2000 to December 2017 to identify Systematic Reviews (SRs) with at least one meta-analysis...
May 5, 2018: Journal of Dentistry
Joachim Krois, Gerd Göstemeyer, Seif Reda, Falk Schwendicke
OBJECTIVES: Micro-invasive treatment (sealing, infiltration) seems more efficacious to arrest early (non-cavitated) proximal carious lesions than non-invasive treatment (NI). Uncertainty remains as to the efficacy of sealing versus infiltration and the robustness of the evidence. We aimed to review and synthesize this evidence using pairwise and network-meta-analysis (NMA) and to perform trial sequential analysis (TSA). SOURCES: Searching three electronic databases (Medline, Embase, Cochrane Central) was complemented by hand searches and cross-referencing...
April 30, 2018: Journal of Dentistry
Cesar R Pucci, Li-Sha Gu, Hong-Yun Zhang, Qun Song, Veronica Wang Xia, Linsey B Davis, Danilo de Souza Andrade, Annalisa Mazzoni, Lorenzo Breschi, David H Pashley, Franklin R Tay, Li-Na Niu
OBJECTIVES: The water-associated attributes of resin-dentin interfaces created by contemporary adhesives are important determinants of bond integrity and stability. In the present work, these attributes were estimated from the perspectives of causality, to examine the behavior of the first and most-recently launched versions of universal adhesives when applied in either the etch-and-rinse mode or the self-etch mode. METHODS: The immediate cause of interfacial permeability and the time-dependent cause of water sorption were investigated in conjunction with the intermediate effect of interface degradation and the more long-term effect of loss of mechanical strength, before and after thermomechanical cycling...
April 24, 2018: Journal of Dentistry
John Perry, Ilona Johnson, Hashmat Popat, Maria Z Morgan, Paul Gill
INTRODUCTION: For effective risk communication, clinicians must understand patients' values and beliefs in relation to the risks of treatment. This qualitative study aimed to explore adolescent perceptions of orthodontic treatment risks and risk information. METHODS: Five focus groups were carried out with 32 school/college pupils aged 12-18 in Wales, UK. Participants were purposively selected and had all experienced orthodontic treatment. A thematic approach was used for analysis and data collection was completed at the point of data saturation...
April 24, 2018: Journal of Dentistry
Bernadette A M M Sterenborg, Thomas J J Maal, Rinaldo Vreeken, Bas A C Loomans, Marie-Charlotte D N J M Huysmans
OBJECTIVE: Evaluate the effect of a full rehabilitation, including an increase of vertical dimension of occlusion (VDO), in patients with severe tooth wear on changes in facial appearance. METHODS: Patients with severe tooth wear were restoratively treated using direct composite restorations, including an increase of the VDO. Before and one month after treatment 3D stereophotographs were taken and facial changes were measured with the use of 3D cephalometric landmarks...
April 21, 2018: Journal of Dentistry
Laís Rani Sales Oliveira, Stella Sueli Lourenço Braga, Aline Arêdes Bicalho, Maria Tereza Hordones Ribeiro, Richard Bengt Price, Carlos José Soares
OBJECTIVES: To describe a method of measuring the molar cusp deformation using micro-computed tomography (micro-CT), the propagation of enamel cracks using transillumination, and the effects of hygroscopic expansion after incremental and bulk-filling resin composite restorations. METHODS: Twenty human molars received standardized Class II mesio-occlusal-distal cavity preparations. They were restored with either a bulk-fill resin composite, X-tra fil (XTRA), or a conventional resin composite, Filtek Z100 (Z100)...
April 21, 2018: Journal of Dentistry
Jiaxi Yue, Hongye Yang, Siying Liu, Fangfang Song, Jingmei Guo, Cui Huang
OBJECTIVES: To evaluate the effect of naringenin on the biofilm formation of Streptococcus mutans (S. mutans), and to investigate its mechanisms of action and biological toxicity. METHODS: Minimum inhibitory concentrations, growth curves, and biofilm inhibition rates of naringenin were determined to assess its antimicrobial effect on S. mutans. The morphology of S. mutans and the structure of biofilm were observed by FESEM and CLSM. Bacterial aggregation, bacterial surface hydrophobicity, and real-time PCR for gtfB, gtfC, comD, comE, and luxS mRNA expression were assessed to preliminarily investigate the mechanisms of action...
April 18, 2018: Journal of Dentistry
Carlos López-Suárez, Raquel Castillo-Oyagüe, Verónica Rodríguez-Alonso, Christopher D Lynch, María-Jesús Suárez-García
OBJECTIVES: This study aims to evaluate the fracture load of differently fabricated 3-unit posterior fixed dental prostheses (FDPs) with an intermediate pontic. METHODS: Fifty sets of two stainless-steel abutments were randomly assigned to five groups (n = 10 each) depending on the material and technique used for manufacturing the FDPs: (1) Metal-ceramic (MC, control); (2) Lava Zirconia (LZ, bi-layered); (3) Lava Plus (LM, monolithic); (4) VITA In-Ceram YZ (YZ, bi-layered); and (5) IPS e-max ZirCAD (ZZ, bi-layered)...
April 17, 2018: Journal of Dentistry
Seif Magdy Reda, Joachim Krois, Sophie Franziska Reda, William Murray Thomson, Falk Schwendicke
OBJECTIVES: Regular and/or preventive dental services utilization is an indicator of healthcare access and associated with improved health outcomes. We assessed the proportion of individuals regularly/preventively utilizing dental services, and how this was affected by demographic, health-related and social factors. SOURCES: Three electronic databases (Medline, Embase, Central) were searched (2005-2017). STUDY SELECTION: We included observational studies investigating the association between preventive/regular dental service utilization and age, oral and general health, edentulism, family structure and health literacy...
April 16, 2018: Journal of Dentistry
A Sleibi, A R Tappuni, Graham R Davis, P Anderson, A Baysan
OBJECTIVES: To compare the efficacy of fluoride varnishes either casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) or bioglass particles on the severity index of root caries. METHODS: Visual-tactile assessments including lesion hardness was carried out to categorise the severity index of 80 extracted teeth with primary root caries. These teeth were randomly divided into four groups; CPP-ACP and fluoride, bioglass and fluoride, fluoride only, and no treatment...
April 16, 2018: Journal of Dentistry
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