Relationship between mechanical properties and bond durability of short fiber ‐reinforced resin composite with universal adhesive
The purpose of this study was to determine the relationship between mechanical properties and bond durability of short fiber‐reinforced resin composite with universal adhesive. As controls, micro‐hybrid and nano‐hybrid resin composites were tested. The universal adhesives used were Scotchbond Universal, Adhese Universal, and G‐Premio Bond. The fracture toughness and flexural properties of resin composites, and shear bond strength and shear fatigue strength of universal adhesive with resin composite using both total‐etch and self‐etch modes were determined. In the results, short fiber‐reinforced resin composit...
Source: European Journal of Oral Sciences - October 2, 2016 Category: Dentistry Authors: Akimasa Tsujimoto, Wayne W. Barkmeier, Toshiki Takamizawa, Hidehiko Watanabe, William W. Johnson, Mark A. Latta, Masashi Miyazaki Tags: Original Article Source Type: research
Amelogenin specific IgA and IgG in children with untreated coeliac disease
Children with untreated coeliac disease (CD) may develop enamel defects. Moreover, children with untreated CD have increased serum levels of gliadin reactive IgG, which may cross‐react to amelogenin. The aim of this study was to investigate reactivity of anti‐gliadin IgA and IgG to amelogenin in children with untreated CD. Blood samples from patients with CD (n = 75) and from disease controls (n = 24) were analysed for IgA and IgG reactivities to amelogenin (Emdogain) and to gliadin by ELISA. Whereas children with CD had statistically significantly higher serum levels of anti‐amelogenin IgA, only those with the most ...
Source: European Journal of Oral Sciences - September 30, 2016 Category: Dentistry Authors: Sanja Petronijevic, Solveig Stig, Jian Gao, Trond S. Halstensen Tags: Original Article Source Type: research
Does induced masseter muscle pain affect integrated jaw –neck movements similarly in men and women?
Normal jaw opening–closing involves simultaneous jaw and head–neck movements. We previously showed that, in men, integrated jaw–neck movements during jaw function are altered by induced masseter muscle pain. The aim of this study was to investigate possible sex‐related differences in integrated jaw–neck movements following experimental masseter muscle pain. We evaluated head–neck and jaw movements in 22 healthy women and 16 healthy men in a jaw opening–closing task. The participants performed one control trial and one trial with masseter muscle pain induced by injection of hypertonic saline. Jaw and head move...
Source: European Journal of Oral Sciences - September 30, 2016 Category: Dentistry Authors: Birgitta Wiesinger, Birgitta H äggman‐Henrikson, Fredrik Hellström, Erling Englund, Anders Wänman Tags: Original Article Source Type: research
Risk of electromagnetic interference induced by dental equipment on cardiac implantable electrical devices
This study evaluated in vitro the risks associated with different types/makes of cardiac devices and types of dental equipment. Six electronic dental tools were tested on three implantable cardioverter defibrillators and three pacemakers made by different manufacturers. Overall, the risk of interference with the pacemakers was 37% lower than with the implantable cardioverter defibrillators. Regarding the types/makes of cardiac devices analysed, that from Boston Scientific had a five‐fold greater risk of interference than did that from Biotronik [prevalence ratio (PR) = 5.58]; there was no difference between that from Bio...
Source: European Journal of Oral Sciences - September 30, 2016 Category: Dentistry Authors: Jaume Miranda ‐Rius, Eduard Lahor‐Soler, Lluís Brunet‐Llobet, Xavier Sabaté de la Cruz Tags: Original Article Source Type: research
Multimorbidity patterns of oral clinical conditions, social position, and oral health ‐related quality of life in a population‐based survey of 12‐yr‐old children
The aim of this study was to describe the patterns of multimorbidities of oral clinical conditions in children. The association between social position and number of oral clinical conditions, and the relationship of social position and number of oral clinical conditions with oral health‐related quality of life [OHRQoL, measured using the Brazilian Child‐Oral Impacts on Daily Performance (Child‐OIDP)] were also investigated. The study analysed data on 7,208 children, 12 yr of age, from the Brazilian Oral Health Survey (SBBrasil Project). Cluster analysis based on the observed/expected (O/E) ratios identified six signi...
Source: European Journal of Oral Sciences - September 30, 2016 Category: Dentistry Authors: Mario V. Vettore, Gabriela de F. Meira, Maria A. B. Rebelo, Janete M. Rebelo Vieira, Carolina Machuca Tags: Original Article Source Type: research
Methods and terminology used in cell ‐culture studies of low‐dose effects of matrix constituents of polymer resin‐based dental materials
In conclusion, cell‐culture conditions and tests used to define exposure scenarios have changed little in the last decades, despite development in recommendations. Nomenclature alignment is needed for a better understanding of possible biohazards of methacrylates. (Source: European Journal of Oral Sciences)
Source: European Journal of Oral Sciences - September 30, 2016 Category: Dentistry Authors: Bo W. Nilsen, Ulf Örtengren, Jaione Simon‐Santamaria, Karen K. Sørensen, Vibeke B. Michelsen Tags: Review Source Type: research
Comparative evaluation of the impact of minimally invasive preparation vs. conventional straight ‐line preparation on tooth biomechanics: a finite element analysis
This study aimed to compare the biomechanics on teeth after minimally invasive (MI) preparation and straight‐line (SL) preparation using finite element analysis. Six finite element analysis models of a mandibular first molar were constructed and divided into two groups (MI and SL). Two loads of 250 N, one vertically stimulating the vertical masticatory force and the other given 45° to the longitudinal axis of the tooth, were applied. Stresses in the teeth were calculated and analyzed. Under both vertical and 45° loads, the greatest stresses were located at the margin of the cavities on the occlusal surfaces. The stress...
Source: European Journal of Oral Sciences - September 30, 2016 Category: Dentistry Authors: Keyong Yuan, Chenguang Niu, Qian Xie, Wenxin Jiang, Li Gao, Zhengwei Huang, Rui Ma Tags: Original Article Source Type: research
Influences of bicarbonate on processes of enamel subsurface remineralization and demineralization: assessment using micro ‐Raman spectroscopy and transverse microradiography
In conclusion, incorporation of carbonate and phosphate ions into enamel subsurface lesions during remineralization does not affect the magnitude of remineralization or acid resistance. (Source: European Journal of Oral Sciences)
Source: European Journal of Oral Sciences - September 30, 2016 Category: Dentistry Authors: Erika Kuramochi, Junko Iizuka, Yoshiharu Mukai Tags: Original Article Source Type: research
Survival and failure modes: platform ‐switching for internal and external hexagon cemented fixed dental prostheses
This study evaluated the probability of survival (reliability) of platform‐switched fixed dental prostheses (FDPs) cemented on different implant–abutment connection designs. Eighty‐four‐three‐unit FDPs (molar pontic) were cemented on abutments connected to two implants of external or internal hexagon connection. Four groups (n = 21 each) were established: external hexagon connection and regular platform (ERC); external hexagon connection and switched platform (ESC); internal hexagon and regular platform (IRC); and internal hexagon and switched platform (ISC). Prostheses were subjected to step‐stress accelerat...
Source: European Journal of Oral Sciences - September 28, 2016 Category: Dentistry Authors: Rodolfo B. Anchieta, Lucas S. Machado, Ronaldo Hirata, Paulo G. Coelho, Estevam A. Bonfante Tags: Original Article Source Type: research
Influence of visual observational conditions on tongue motor learning
The aim of this study was to investigate the impact of visual observational conditions on performance during a standardized tongue‐protrusion training (TPT) task and to evaluate subject‐based reports of helpfulness, disturbance, pain, and fatigue, due to the observational conditions on 0–10 numerical rating scales. Forty‐eight healthy participants performed a 1‐h standard TPT task. Participants were randomly assigned to one of the following three groups with different observational conditions: group 1, model observation (participants watched a prerecorded video showing standard TPT before optimal TPT being perfor...
Source: European Journal of Oral Sciences - September 28, 2016 Category: Dentistry Authors: Mohit Kothari, Xuemei Liu, Lene Baad ‐Hansen, Abhishek Kumar, Guo Bin, Peter Svensson Tags: Original Article Source Type: research
Is the experience of pain in patients with temporomandibular disorder associated with the presence of comorbidity?
The aim of this study was to explore the association between the presence of comorbidities and the pain experience in individual patients with temporomandibular disorder (TMD). This clinical trial comprised 112 patients with TMD pain. For all participants the presence of the following comorbid factors was assessed: pain in the neck; somatization; impaired sleep; and depression. Pain experience was evaluated using the McGill Pain Questionnaire (MPQ). For each subject the TMD‐pain experience was assessed for three dimensions – sensory, affective, and evaluative – as specified in the MPQ. The association between comorbi...
Source: European Journal of Oral Sciences - September 26, 2016 Category: Dentistry Authors: Corine M. Visscher, Erin A. Wesemael ‐Suijkerbuijk, Frank Lobbezoo Tags: Original Article Source Type: research
Antimicrobial activity and regulation of CXCL9 and CXCL10 in oral keratinocytes
Chemokine (C‐X‐C motif) ligand (CXCL)9 and CXCL10 are dysregulated in oral inflammatory conditions, and it is not known if these chemokines target microorganisms that form oral biofilm. The aim of this study was to investigate the antimicrobial activity of CXCL9 and CXCL10 on oral microflora and their expression profiles in oral keratinocytes following exposure to inflammatory and infectious stimuli. Streptococcus sanguinis was used as a model and Escherichia coli as a positive control. The antimicrobial effect of CXCL9/CXCL10 was tested using a radial diffusion assay. mRNA transcripts were isolated from lipopolysaccha...
Source: European Journal of Oral Sciences - September 26, 2016 Category: Dentistry Authors: Alison Marshall, Antonio Celentano, Nicola Cirillo, Michele D. Mignogna, Michael McCullough, Stephen Porter Tags: Original Article Source Type: research
Cost ‐effectiveness, in a randomized trial, of glass‐ionomer‐based and resin sealant materials after 4 yr
This study, conducted from a government program perspective, compared the incremental cost‐effectiveness of oral health interventions, in particular their delivery to underserved populations in whom dental sealants constitute an important, high‐yielding complement to toothbrushing in dental‐caries prevention. The study data concern the relative cost‐effectiveness of three sealant materials in four approaches to prevent cavitated dentine carious lesions in permanent molars in a community intervention trial among school‐age children in Wuhan, China. The four approaches were high‐viscosity glass‐ionomer cement w...
Source: European Journal of Oral Sciences - September 25, 2016 Category: Dentistry Authors: Ann S. Goldman, Xi Chen, Mingwen Fan, Jo E. Frencken Tags: Original Article Source Type: research
Influence of dentin pretreatment with synthetic hydroxyapatite application on the bond strength of fiber posts luted with 10 ‐methacryloyloxydecyl dihydrogen phosphate‐containing luting systems
The aim of this in vitro study was evaluate the effect of application of synthetic hydroxyapatite on fiber post bond strength to radicular dentine. Forty, single‐root teeth were endodontically treated and an 8 mm post space was prepared. Specimens were randomly placed in four groups (n = 10 in each) and treated using the following fiber post luting procedures: group 1, 17% EDTA + Panavia SA; group 2, 17% EDTA + Teethmate Desensitizer + Panavia SA; group 3, All‐Bond Universal + Duo‐Link Universal; and group 4, All‐Bond Universal + Teethmate Desensitizer + Duo‐Link Universal. Fiber posts were luted in the post spac...
Source: European Journal of Oral Sciences - August 9, 2016 Category: Dentistry Authors: Nicola Scotti, Emanuele Bergantin, Riccardo Tempesta, Gianluca Turco, Lorenzo Breschi, Elena Farina, Damiano Pasqualini, Elio Berutti Tags: Original Article Source Type: research
Effect of a repeated tongue ‐lift motor task for tongue function
This study investigated the effect of repeated tongue motor tasks on suprahyoid muscle activity and tongue pressure. Fourteen participants performed three series of a standardized tongue‐lift training (TLT) task on each of five consecutive days. Electromyographic (EMG) activity from suprahyoid muscles and tongue pressure were recorded. In the first and third TLT series, participants were instructed only to target different force levels. During the second TLT series, visual feedback of the force level was given. One series consisted of three measurements [at 10%, 20%, and 40% of maximum voluntary contraction (MVC), respec...
Source: European Journal of Oral Sciences - July 31, 2016 Category: Dentistry Authors: Hisae Honki, Takashi Iida, Osamu Komiyama, Manabu Masuda, Peter Svensson, Misao Kawara Tags: Original Article Source Type: research
