Abstract：
OBJECTIVE:Microleakage continues to be a main reason for failure of root canal therapy, where the challenge has been to achieve an adequate seal between the internal tooth structure and the main obturation material, gutta-percha. The Resilon/Epiphany (R/E) system uses a new obturation material that bonds chemically with the internal tooth structure, thereby decreasing the possibility of microleakage. The purpose of this study was to compare dye leakage in root canals filled with R/E and those in which gutta percha was used. METHODS AND MATERIALS:Pulpectomies were performed on 105 extracted human singlecanal mandibular incisors. The teeth were then randomly divided into 2 groups: 1 was obturated with gutta-percha and the other with R/E. Obturation was performed using the lateral condensation technique. The teeth were then incubated for 10 days, 1 month or 3 months in a heated water bath solution with dye to simulate conditions in the human oral cavity. Teeth were sectioned and examined under dissecting and scanning electron microscopes to assess dye penetration, seal and bonding. RESULTS:Resilon as the main obturation material consistently resulted in less microleakage than gutta-percha at all 3 time intervals. CONCLUSION:The R/E system provides a new material for root canal treatment. R/E creates a chemical bond with the internal tooth structure over the entire root area that is maintained over time, thus representing a better option than gutta-percha. Further studies on R/E will help validate its use and determine its long-term success rates in vivo.
journal_name
J Can Dent Assocjournal_title
Journal (Canadian Dental Association)authors
Aptekar A,Ginnan Ksubject
Has Abstractpub_date
2006-04-01 00:00:00pages
245issue
3eissn
0709-8936issn
1488-2159journal_volume
72pub_type
杂志文章abstract：:A series of prospective studies started in the mid-1980s at the University of Toronto have provided evidence of the efficacy and effectiveness of implants in the treatment of the fully and partially edentulous patients. These studies have focused primarily on treatment outcomes at the surgical and prosthodontic levels...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：2002-02-01 00:00:00
abstract：:Because of the dental profession's increased utilization of light-cured restorative materials, there has been a corresponding increase in research into the light sources used to initiate polymerization. The argon laser is one promising source, as the wavelength of light emitted by this laser is optimal for the initiat...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1999-09-01 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：:Mandibular fractures in the pediatric patient population are relatively uncommon. These patients present with their own unique treatment requirements. Most fractures have been treated conservatively by dental splints. Closed reduction techniques with maxillomandibular fixation (MMF) in very young children can pose sev...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1993-09-01 00:00:00
abstract：:Despite the progress made in the field of pulp biology, the technique and philosophy of direct vital pulp capping remains a controversial subject. Clinicians are well aware of the immediate and long-term success rates after root canal therapy, but are less certain of the success of vital pulp capping. Researchers have...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1999-06-01 00:00:00
abstract：:Some dental educational institutions in North America have incorporated community-oriented programs into their curriculum. The purpose of this study was to investigate the potential for the clinical placement of Ontario's dental and dental hygiene students in community-based settings. Key informant interviews were use...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2002-07-01 00:00:00
abstract：:A Change Of Heart (ACOH)--a heart-health promotion project based in the Toronto borough of East York--devised a tobacco-cessation counselling program for use in dental offices. This protocol was implemented on a pilot basis in dental offices in East York during 1993. Four practices (seven dentists) agreed to incorpora...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：OBJECTIVE:To perform a systematic literature review and meta-analysis on the effectiveness of interventions used in the emergency management of acute apical periodontitis in the permanent dentition. METHODS:Electronic databases were searched from their inception to 2001. These searches, combined with manual searching,...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,meta分析,评审
doi：
更新日期：2003-03-01 00:00:00
abstract：:Over the past 4 years, numerous cases of osteonecrosis of the jaw in patients treated with bisphosphonates have been reported. Since 1998, children and adolescents with osteogenesis imperfecta have received bisphosphonates to increase their bone density and reduce the incidence of bone fractures. The results have been...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2008-07-01 00:00:00
abstract：:The treatment plan for the pediatric cardiac patient must include the following: 1. A complete medical history that will elicit adequate information with respect to the patient's possible heart condition. 2. Consultation with the family physician, pediatrician and/or cardiologist to learn the specific nature of the de...
journal_title：Journal (Canadian Dental Association)
pub_type： 指南,杂志文章,实务指引
doi：
更新日期：1992-03-01 00:00:00
abstract：:Following the removal of mandibular teeth, especially third molars nowadays, a post-operative complication may occur, namely alveolitis. This article reviews the pertinent literature concerning this condition and discusses its etiology, symptoms and treatment. ...
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：:An impacted left mandibular second molar (tooth 37) was extracted, but most of its dental follicle remained in the socket. The crown and dental papilla of an unerupted, left mandibular third molar (tooth 38) were then placed into the socket of tooth 37. Successful interaction between the dental follicle of tooth 37 an...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2009-04-01 00:00:00
abstract：:The aim of this study was to identify the parental factors associated with regular use of dental services by second year secondary school students in Quebec. Data were collected in 1996-97, as part of a provincial survey on the dental health of Quebec students. A stratified probabilistic sample of 1,351 students, repr...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2002-11-01 00:00:00
abstract：OBJECTIVES:The objectives of this study were to determine the rate of use of dental services by independently living older dentate and edentulous adults and the factors affecting utilization. METHODS:Data were derived from the cross-sectional Manitoba Study of Health and Aging. A personal interview included over 240 q...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2008-03-01 00:00:00
abstract：:The ergonomic dental office is designed around the people who work there on a daily basis as well as the patients it serves. Because it is attractive, functional, esthetic and comfortable, it cultivates happy, productive dental teams and relaxed, contented patients. An ergonomic office enables people to move about fre...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1992-03-01 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：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：:Five scavenging systems were installed in 10 dental office and the levels of nitrous oxide were closely monitored for each. While the readings were higher than the previous non-clinical study, all appeared to be reasonably efficient. The various factors which caused increases in background levels were also recorded in...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1989-07-01 00:00:00
abstract：:Squamous cell carcinoma (SCC) is the most prevalent malignant neoplasm of the oral cavity. The conventional tumour and several histologic subtypes of SCC present morphologic features and specific behaviour when they occur in the oral mucosa. For example, basaloid SCC is an aggressive tumour and verrucous carcinoma has...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：2007-05-01 00:00:00
abstract：:Osteomyelitis is described as an inflammation of bone and bone marrow that may develop in the jaws following a chronic odontogenic infection or for a variety of other reasons. This situation may be acute, sub-acute or chronic, resulting in a totally different clinical picture. ...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1995-05-01 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：:Ankylosis is a known complication of replanted or severely intruded permanent incisors and can be diagnosed by the characteristic sound emitted when the tooth is tapped. The ankylosed incisor demonstrates a lack of physiologic mobility and, later, radiographic evidence of replacement resorption. If the patient is pre-...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2005-11-01 00:00:00
abstract：:The 3-way tray technique is popular as it provides master and opposing arch impressions and an interocclusal record at the same time. Excellent clinical results can be achieved with appropriate case selection, use of rigid tray and impression materials, attention to tray positioning and other details throughout the pr...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：2008-12-01 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
abstract：:Because of predisposing systemic disease, the frequent administration of medication, and the use of a complete denture, oral candidiasis is a common problem among older, chronically ill, institutionalized adults. This randomized clinical trial was designed to evaluate the effectiveness of an antifungal denture soaking...
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：1995-03-01 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：:Over the past twenty years, Guided Tissue Regeneration (GTR) has become an accepted technique for the treatment of tissue loss consequent to periodontal disease. The principles of GTR have recently begun to be employed in endodontics since pulpal necrosis often leads to periodontal tissue loss as a result of the leaka...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：1999-07-01 00:00:00
abstract：:This paper provides a review of the literature concerning the etiology and manifestations of barodontalgia, as well as important clinical considerations for its management. Barodontalgia is characterized by exposure to a pressure gradient, such as that experienced by underwater divers, aviation personnel and air trave...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章,评审
doi：
更新日期：2005-01-01 00:00:00
abstract：:Newer designs of manual and electric toothbrushes are briefly described. It is difficult to conduct meaningful clinical studies to detect the apparently small differences between these devices. Recommendations that dentists make to their patients should therefore be based on individual patient considerations. ...
journal_title：Journal (Canadian Dental Association)
pub_type： 杂志文章
doi：
更新日期：1994-10-01 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
