Abstract:
OBJECTIVE:Since the properties of polymers can be influenced using electron-beam irradiation, the aim of this study was to investigate whether electron-beam post-curing can improve the mechanical properties of experimental denture base polymers. MATERIAL AND METHODS:Rectangular specimens of different experimental polymeric blends were electron-beam irradiated (post-cured) with 25 kGy and 200 kGy using an electron accelerator of 4.5 MeV. Fracture toughness, work of fracture, Vickers hardness and colour changes were measured and compared in non-irradiated specimens. RESULTS:The mechanical properties of all the investigated polymers seemed to benefit from low-energy electron-beam irradiation (25 kGy). Using an energy dose of 200 kGy, all blends showed deteriorated mechanical properties resulting from chain breakage. Nevertheless, all investigated polymers had undesirable colour changes after electron-beam irradiation. CONCLUSIONS:Mechanical properties of experimental polymethyl-methacrylate could be changed using electron-beam irradiation. Because of discolorations caused by the irradiation levels investigated, these levels cannot be recommended for practical applications.
journal_name
Acta Odontol Scandjournal_title
Acta odontologica Scandinavicaauthors
Faltermeier A,Behr M,Rosentritt M,Handel Gdoi
10.1080/00016350701278781subject
Has Abstractpub_date
2007-06-01 00:00:00pages
171-6issue
3eissn
0001-6357issn
1502-3850pii
778855190journal_volume
65pub_type
杂志文章abstract::In the oldest elderly, an increase in the number of remaining teeth may increase oral infection foci. The aim of this follow-up study was to examine the radiologically detected oral health condition of a group of home-living elderly in Helsinki at 5-year intervals. The population of this study comprised 103 home-livin...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/000163500429244
更新日期:2000-06-01 00:00:00
abstract:OBJECTIVE:It should be expected that type 1 diabetes mellitus may disturb innate and acquired immunity. There are no data on type 1 diabetes mellitus-related changes in the salivary flow and the protein output responsible for the innate immunity of saliva depending on the quality of dentition reflecting the age of chil...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2013.773071
更新日期:2013-11-01 00:00:00
abstract:OBJECTIVES:Vinyl polysiloxane (VPS) is elastomeric dental impression material which, despite having very few reports of adverse reactions, has shown high levels of cytotoxicity that is difficult to be interpreted without referencing to the positive control material. Therefore, in this study, positive control VPS was de...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2013.879996
更新日期:2014-11-01 00:00:00
abstract:INTRODUCTION:The aim of this study is to compare the root canal transportation with the PathFile-ProTaper recommended protocol, PathFile-ProTaper modified protocol and stainless steel K-flexofiles. METHODS:Forty-five ISO 15, 0.02 taper S-shaped Endo Training Blocks were divided randomly into three groups of 15 each an...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2013.805430
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVE:To investigate the associations between oral sugar clearance and the prevalence of dental decay. MATERIAL AND METHODS:A total of 92 (44 F, 48 M) 71-year-old subjects in Goteborg, Sweden were consecutively chosen from a representative cohort study. The subjects were examined for: 1) caries-related status, 2) ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350802378647
更新日期:2008-01-01 00:00:00
abstract::Qualitative and quantitative features of mammalian tooth enamel structure are increasingly being used in taxonomic and phylogenetic analyses, although the variability shown by these traits has not received adequate consideration. This study evaluates the variability displayed by nine quantitative parameters in deep, i...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016358709094349
更新日期:1987-02-01 00:00:00
abstract:OBJECTIVE:Oral leukoplakia (OL) presents as a white lesion of the oral mucosa and is not typically associated with the sensation of pain. OL should be surgically removed when possible because it is considered a potentially malignant oral disorder (PMOD). This study assessed the pain sensations experienced by patients i...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016357.2020.1869826
更新日期:2021-01-21 00:00:00
abstract:OBJECTIVE:To investigate the effect of storage duration on the tensile bond strength of acrylic and silicone-based denture base materials with liners either heat-cured or auto-cured. MATERIAL AND METHODS:The denture liners investigated were Vertex soft (acrylic-based, heat-cured), Coe soft (acrylic-based, auto-cured),...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350510019667
更新日期:2005-02-01 00:00:00
abstract:OBJECTIVE:To incorporate a metal framework into removable partial dentures, the dimensional accuracy of thermoplastic resins requires precision equivalent to conventional acrylic resins. This study aimed to evaluate the fitting accuracy of thermoplastic resins compared to heat-cured acrylic resin. MATERIALS AND METHOD...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2014.946966
更新日期:2015-01-01 00:00:00
abstract::The purpose of this study was to obtain data on the oral hygiene practices, oral hygiene status, and periodontal health among primary school children in Nairobi. The study group consisted of 513 children, 262 aged 6-8 years and 251 aged 13-15 years. The children were from 6 schools randomly selected among the 154 publ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016359109005923
更新日期:1991-10-01 00:00:00
abstract:OBJECTIVE:To estimate the prevalence and describe the distribution of demarcated opacities and possible consequences of this condition in permanent 1st molars and incisors in Danish children. MATERIAL AND METHODS:Among all 6 to 8-year-old children in two municipalities, 745 (83.6%) were clinically examined for the occ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350801926941
更新日期:2008-02-01 00:00:00
abstract::The purpose of this study was to determine the sensitivity, specificity, positive and negative predictive values for Corah's Dental Anxiety Scale (DAS) and two modified versions of it (MDAS; MDAS/4). A questionnaire was mailed to a simple random sample of 1,190 25-year-old residents in the west of Norway in 1997. Half...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350050217091
更新日期:2000-12-01 00:00:00
abstract::The effect of extrinsic asthma on periodontal conditions was studied in a group of 30 asthmatic children. Clinical examination revealed that asthmatic children had more gingivitis than their healthy controls. The asthmatic children who received an inhaled corticosteroid as treatment had more severe gingivitis compared...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357909004680
更新日期:1979-01-01 00:00:00
abstract::Background: Periodontitis has been associated with several systemic diseases and medical conditions, including oral cancer (OC). However, most studies reporting an association between OC and periodontal disease have used different clinical and radiographic criteria to define periodontal disease. This review aimed to e...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016357.2020.1774076
更新日期:2020-10-01 00:00:00
abstract::In a previous study, dentists reported very high scores for perceived physical workload, but only low to moderate scores for the musculoskeletal system. This is difficult to explain when other occupational groups in the dental services are compared, and is the main reason why the present study was performed. To measur...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350510019964
更新日期:2005-08-01 00:00:00
abstract:AIM:The purpose of this clinical study was to evaluate the general incidence of post-operative pain and flare-ups in patients who were endodontically treated by two endodontics specialists using rotary instruments (Hero 642, Micro Mega, France) with the same treatment protocol. METHODS:Records of 382 teeth belonging t...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2012.715199
更新日期:2013-05-01 00:00:00
abstract:OBJECTIVE:Polypharmacy is a common cause of xerostomia. This study aimed to investigate whether xerostomia could be an adverse drug event of mouthwashes, when they are used for longer than 2 weeks by patients taking polypharmacy. MATERIALS AND METHODS:This cross-sectional observational study included 120 hospitalized ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2014.923108
更新日期:2015-05-01 00:00:00
abstract::The craniofacial morphology of 48 consecutive adult males with isolated cleft palate was studied by means of lateral cephalograms at the mean age of 18.8 years. Twelve of the patients had received pharyngeal flap surgery between 4 and 12 years of age (mean age 6 years) to improve speech. No significant differences wer...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350310003846
更新日期:2003-06-01 00:00:00
abstract::Two hundred and forty-one treatment sessions with nitrous oxide oxygen sedation were performed in 194 patients undergoing ambulatory oral surgery procedures. Removal of mesiodentes and tooth transplants were the most frequent procedures in age groups under 13 years, while removal of impacted teeth was predominant in o...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/000163599428788
更新日期:1999-08-01 00:00:00
abstract::Recent studies on prenatal innervation of the jaws have shown that three separate main innervation paths, constituting three bilateral neural developmental fields (incisor field, canine/premolar field, molar field) exist in each jaw. In this communication the sequences in which the fields are innervated are indicated....
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
abstract:OBJECTIVE:The clinical features of the early stages of bisphosphonate-related osteonecrosis of the jaw (BRONJ) in patients with breast cancer remain unclear. A retrospective cohort study was conducted of patients with breast cancer who received intravenous bisphosphonate (BP) treatment in a single center in order to cl...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2014.887772
更新日期:2014-11-01 00:00:00
abstract:OBJECTIVE:Acidic fluorides are proposed for the treatment of dental erosion. The aim of this study was to examine the irritation properties of dilute hydrofluoric acid (HF) solutions for potential use in the oral cavity. MATERIAL AND METHODS:Hen's egg test-chorioallantoic membrane (HET-CAM): The CAM was accessed by ca...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350903117118
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVES:The primary objective of this study was to investigate the association of systemic diseases, use of medications, allergies and tobacco habits with geographic tongue (GT) and fissured tongue (FT) lesions. The secondary objectives were to evaluate the clinical characteristics of tongue lesions and to compare t...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2015.1087046
更新日期:2016-01-01 00:00:00
abstract::The frequency of temporomandibular disorders (TMDs) and radiologically observed abnormalities in the condyles of the temporomandibular joints (TMJs) of professional violin and viola players was investigated in 26 orchestra violinists/violists (VP group) and in their sex-, age-, and dentition-matched controls (C group)...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016359509005951
更新日期:1995-04-01 00:00:00
abstract:OBJECTIVE:Headaches represent a significant public health problem, but the knowledge of factors specifically related to incidence and persistence of headaches is still limited. The aim of this study was to evaluate whether gender, self-reported bruxism and variations in the dental occlusion contribute to onset and pers...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2014.906652
更新日期:2014-11-01 00:00:00
abstract::Induction of mucosal immunity by oral immunization with protein antigen alone is difficult: potent mucosal adjuvants, vectors, or other special delivery systems are required. Cholera toxin (CT) has been shown to be an effective adjuvant for the development of mucosal vaccines and, when given with vaccine, induces both...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章,评审
doi:10.1080/000163501750541174
更新日期:2001-10-01 00:00:00
abstract:OBJECTIVE:The global pandemic of coronavirus disease-19, caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), is the latest hazard facing healthcare workers (HCW) including dental care workers (DCW). It is clear that the major mode of SARS-CoV-2 transmission is the airborne route, through inhalat...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016357.2020.1810769
更新日期:2020-11-01 00:00:00
abstract:OBJECTIVE:The aim of the present study was to directly compare Carisolv and Papacarie regarding the volume of removed tissue (RT) and dentin mineral density (DMD) after excavation. MATERIALS AND METHODS:Twenty permanent molars were randomized into two groups where caries was excavated using Carisolv or Papacarie follo...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016357.2017.1406614
更新日期:2018-05-01 00:00:00
abstract::In Finland, adults born in 1961 or later were progressively entitled to subsidies for dental care from private practitioners during 1986-90, while at the same time having access to care in the Public Dental Service. The aim of this study was to compare the effects of attendance frequency of private dental care on trea...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/000163502753509473
更新日期:2002-03-01 00:00:00
abstract:OBJECTIVE:To determine if the differing contrast resolution of various LCD monitors affects the reliability or accuracy of measurements of proposed implant sites. MATERIALS AND METHODS:Edentulous areas of human dry skulls were marked with radiopaque markers in order to standardize the plane of the transverse cross-sec...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2012.741709
更新日期:2013-09-01 00:00:00