Abstract：
OBJECTIVE:This study was undertaken to characterize 9 currently available proprietary flowable composites with respect to key properties of flow, flexural strength, stiffness (modulus of elasticity) and radiopacity. METHODS:Seven proprietary flowable composites (Aelite Flo, Filtek Flow, Heliomolar Flow, PermaFlo, Revolution Formula 2, Tetric Flow, Wave) and 2 flowable compomers (Compoglass Flow, Dyract Flow) were evaluated. A universal hybrid composite (Filtek Z250) and a restorative compomer (Dyract AP) were used as controls. Standard mechanical testing of 25 x 2 x 2 mm bar specimens was carried out at 24 hours and 1 month. Flow testing used a fixed volume of material under consistent loading, and radiopacity was measured simultaneously for all materials using disk specimens of 1 mm thickness. RESULTS:As expected, flowable composites showed higher flow and lower mechanical properties than the controls. Moduli of the composites were approximately 50% or less of the moduli of control materials, which indicates high flexibility. Flexural strengths approached that of the control composite. Flow properties varied widely. The material Tetric Flow had the highest radiopacity, above that of enamel and the control composite. Lowest radiopacity, below or equivalent to that of dentin, was shown by Wave and Revolution Formula 2. CONCLUSIONS:The flowable materials possessed a wide range of mechanical and physical properties. Their lower mechanical properties suggest that they should not be used in bulk in areas of high occlusal loading. Within intracoronal restorations, clinicians are advised to use materials with high radiopacity. A wide range of fluidity options is available. The clinical applications and performance of these materials require further study.
journal_name
J Can Dent Assocjournal_title
Journal (Canadian Dental Association)authors
Attar N,Tam LE,McComb Dkeywords:
subject
Has Abstractpub_date
2003-09-01 00:00:00pages
516-21issue
8eissn
0709-8936issn
1488-2159journal_volume
69pub_type
杂志文章abstract：:The objective of this study was to compare unstimulated salivary flow rate and residual salivary volume (the volume of saliva retained in the mouth after swallowing) in a group of 23 control subjects and a group of 25 patients who had received radiation treatment or had undergone removal of the salivary glands (or bot...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2004-06-01 00:00:00
abstract：:In light of the increasing demand for fixed prosthetics by today's patients, the author felt the time was right for a review of an area of fixed prosthetics that is neither well understood nor well accepted. The cantilever fixed partial denture (FPD) requires more time to treatment plan and place than other comparable...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1997-02-01 00:00:00
abstract：:Too often survey reports, studies and well advised considerations by health researchers follow one another and pile up without any real application in the day-to-day life. For example, most health professionals and health care workers and even the public in general have deplored the fact, when they read the study done...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1990-03-01 00:00:00
abstract：:The spectrum of oral lesions found in the HIV-infected population forms a diverse group of opportunistic conditions, all of which may be seen in non-HIV infected patients. With the continuing increase in HIV-positive individuals, it is important that practising dentists become familiar with the clinical features of HI...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1991-01-01 00:00:00
abstract：OBJECTIVE:To evaluate the effect of timing (immediate versus delayed) and technique of post space preparation on the ability of the residual root canal obturation to prevent coronal bacterial leakage. MATERIALS AND METHODS:Sixty-six single-rooted teeth were decoronated at the cementoenamel junction. The canals were pr...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,随机对照试验
doi：
更新日期：2009-10-01 00:00:00
abstract：:Over the past several decades, latex hypersensitivity has become an increasingly common phenomenon in the dental setting. Exposure to latex via direct skin contact or inhalation of airborne allergens from powdered gloves poses the risk of sensitizing both clinicians and their patients. Adverse reactions to latex range...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：2009-05-01 00:00:00
abstract：:The panoramic and intraoral radiographs of 154 elderly dental patients aged 65 years and older were assessed at the College of Dentistry, University of Saskatchewan, Saskatoon. Thirty-seven per cent of the patients were completely edentulous, and 61% were partially edentulous. In the dentate group, 87% had evidence of...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1991-05-01 00:00:00
abstract：PURPOSE:To create and test an audio-visual (AV) aid for providing anticipatory guidance on infant oral health to caregivers. METHODS:A DVD-video containing evidence-based information about infant oral health care and prevention in accordance with the American Academy of Pediatric Dentistry guidelines has been develope...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2005-04-01 00:00:00
abstract：:Eighty patients who were culture-confirmed positive for recurrent herpes labialis were entered into a clinical trial. Sixty of these completed two episodes each in a randomized, double-blind, placebo-controlled clinical trial of 5 per cent acyclovir in a polyethylene glycol ointment base. The 5 per cent acyclovir oint...
journal_title：Journal (Canadian Dental Association)
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1989-02-01 00:00:00
abstract：:Evidence suggests that dentists, with their existing commitment to prevention and their opportunity for regular interaction with patients, have the potential to significantly decrease tobacco-related morbidity and mortality. In 1992, dentists belonging to the Alberta Dental Association were surveyed to determine their...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1994-03-01 00:00:00
abstract：:Gardner syndrome is a type of hereditary gastrointestinal polyposis. Dental professionals should be aware that this syndrome can present as multiple impacted teeth and sometimes as large osteomas in the head and neck area. Following a brief review of literature, we present two cases of Gardner syndrome. One of these c...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：2000-01-01 00:00:00
abstract：:Stress is inherent in dental practice. Identifying stressful factors is the first step toward coping with the insidious nature of stress, as preventive measures can then be efficiently established. While numerous studies have been conducted, none of them has identified a specific stress factor that is common to all pr...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1992-11-01 00:00:00
abstract：BACKGROUND AND AIM:Finite element analysis (FEA) was used to generate 3-dimensional models of a human mandible with impacted third molars. The aim was to analyze the effects of removing various amounts of bone around an impacted mandibular third molar and to predict the possibility of iatrogenic fracture. MATERIALS AN...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2010-01-01 00:00:00
abstract：:Identical, unilateral, distal extension base (DEB) maxillary and mandibular casts with a posterior modification area were mailed to 15 Canadian commercial dental laboratories. Each cast was accompanied by a letter explaining the purpose of the study and a request for the laboratory to design a RPD-U and RPD-L framewor...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1995-07-01 00:00:00
abstract：:There have been many studies reporting on the prevalence of root surface caries in elderly populations, but there is little consistency in these reports concerning the associated risk factors. In the present study, intraoral examinations were carried out on adult patients (age range 22 to 91 years, mean age 57.9) on t...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1991-06-01 00:00:00
abstract：:Various definitions, classifications and theories been ascribed to bruxism. Knowledge gained through expanding research initiatives have transformed some of the concepts that were once held as truths. Sleep bruxism is no longer considered a parasomnia nor is its etiology believed to be based on purely mechanical facto...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：2015-01-01 00:00:00
abstract：AIM:To assess the prescribing decisions of general dentists in Vancouver and endodontists in British Columbia regarding analgesics and antibiotics for patients with endodontic disease. An additional aim was to determine whether gender, clinical experience or practice location have an impact on such decisions. METHODS:...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2017-09-01 00:00:00
abstract：:There is a growing body of scientific evidence indicating that nicotine contributes to the progression of periodontal disease, and is detrimental to healing following periodontal therapy. Smokers show a higher prevalence and greater severity of periodontal disease than non-smokers. Nicotine has toxic effects on periph...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1997-03-01 00:00:00
abstract：:This is the third in a series of 5 articles providing a contemporary overview and introduction to unconventional dentistry (UD) and its correlation to unconventional medicine (UM). UD presents issues of dental quackery, fraud and malpractice, and it also engenders professional concerns about public protection and prof...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2000-10-01 00:00:00
abstract：:The ceramo-metallic crown has enjoyed increasing universal popularity as the full-coverage restoration of choice where long-term esthetics is desirable. The porcelain veneer is colour stable and relatively wear resistant. It has excellent compressive strength but poor tensile and shear strength, which unfortunately ca...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1990-11-01 00:00:00
abstract：:Dens evaginatus is a dental anomaly found predominantly in people of Mongoloid origin. Dentists practising in Western countries should also be aware of this condition because of the increasing migration of people from Asia. Supernumerary premolars are uncommon but may be found incidentally during radiographic examinat...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2005-06-01 00:00:00
abstract：:This is the fourth in a series of 5 articles providing a contemporary overview and introduction to unconventional dentistry (UD) and its correlation to unconventional medicine (UM). Several common UD and UM practices are described to familiarize practitioners with a variety of theories, practices, products and treatme...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2000-11-01 00:00:00
abstract：BACKGROUND:Oral, lip and oropharyngeal cancer accounts for up to 75% of head and neck cancers. Dental professionals contribute to improved treatment outcomes through early detection of these cancers. Oral and maxillofacial surgeons (OMFS) are trained to participate in numerous phases of care for patients with oral, lip...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2015-01-01 00:00:00
abstract：PURPOSE:Light units used for polymerization of resin composites are subject to deterioration with age, and frequent maintenance is required to maintain optimal efficacy. This study examined the efficacy of quartz-tungsten-halogen light units in private dental offices in Toronto for polymerization of resin composites. ...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2005-09-01 00:00:00
abstract：:Treatment planning and managing the care of an elderly, frail patient can be complicated by a variety of modifying factors. To understand the patient"s needs, one must understand the environment in which the patient functions. This second in a series of 2 articles presents a case history of a frail, older adult to ill...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2006-06-01 00:00:00
abstract：:There exists a multitude of systemic diseases which exhibit consequential oral manifestations. Dermatologic disorders frequently involve intraoral and perioral tissues which dental practitioners should be familiar with. A compilation of disorders including; bullous diseases (such as Pemphigus Vulgaris, Erythema Multif...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1990-09-01 00:00:00
abstract：:N-butyl cyanoacrylate is an effective tissue adhesive which is hemostatic and bacteriostatic. It can be considered an alternative to conventional sutures in soft-tissue surgery. The author presents two cases demonstrating the use of the material. Case One shows its use in free gingival graft surgery. Case Two shows it...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1998-10-01 00:00:00
abstract：:Oral care providers must be aware of the impact of bleeding disorders on the management of dental patients. Initial recognition of a bleeding disorder, which may indicate the presence of a systemic pathologic process, may occur in dental practice. Furthermore, prophylactic, restorative and surgical dental care of pati...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：2007-02-01 00:00:00
abstract：:The department of dentistry of the Hospital for Sick Children has actively maintained a quality assurance system since the early 1980s. In addition, members of the department have taught courses and published articles on risk management and quality assurance for over a decade. The decision to achieve ISO 9002 registra...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1999-02-01 00:00:00
abstract：:Chondrosarcomas are malignant tumours of cartilaginous origin. They range from a well-differentiated growth resembling a benign cartilage tumour to a high-grade malignancy with aggressive local behaviour and the potential to metastasize. Only 5% to 10% of chondrosarcomas are known to occur in the head and neck region....
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2007-03-01 00:00:00
