Abstract:
:When grown on agar, most Actinobacillus actinomycetemcomitans form circular and convex colonies with an internal star-shaped morphology. Such colonies adhere firmly to the agar, and when removed, a star-shaped imprint similar to that of the intact colony remains. This study was undertaken to determine the nature of this in vitro growth. Stereo-microscopy and scanning and transmission electron microscopy showed that the star-shaped imprint of A. actinomycetemcomitans colonies reflected pseudopod-like extensions of the bacterial colony which penetrated deep into the TSBV agar. The center of the colonies consisted primarily of ghost-like cells, while the dense border of each colony, including the pseudopods, expressed characteristics of vital cells. The latter were embedded in vast amounts of extracellular vesicles, and the outer aspect of the pseudopods was lined with a border of such vesicles.
journal_name
Acta Odontol Scandjournal_title
Acta odontologica Scandinavicaauthors
Blix IJ,Preus HR,Olsen Idoi
10.3109/00016359009033622subject
Has Abstractpub_date
1990-10-01 00:00:00pages
313-8issue
5eissn
0001-6357issn
1502-3850journal_volume
48pub_type
杂志文章abstract::In a Finnish rural population 79.0% of 233 persons had the cusp of Carabelli in first upper molars. Of these 20% showed "positive cusps" and 59% "negative cusps". The occurrence of the structure was bilateral with varying degrees of asymmetry, but if there was no structure on one side of the jaw, the other never showe...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357509027561
更新日期:1975-01-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to analyze the clinicopathological and immunohistochemical features of oral papillomas. MATERIALS AND METHODS:Biopsies of oral papillomas analyzed in the laboratory between 1996-2012 were extracted from the database and used to conduct this retrospective review. The following clinic...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2014.996186
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:Sense of Coherence (SOC) has been associated with perceived oral health measures, but the contribution of SOC to clinical measures is still unclear. The aim of the present cross-sectional study was to evaluate the potential association between periodontal health outcomes, such as periodontal clinical paramete...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2016.1154601
更新日期:2016-07-01 00:00:00
abstract:OBJECTIVE:The aim of the present study was to evaluate association between psychological factors, socio-demographic conditions, oral habits and anterior open bite in five-year-old preschool children. MATERIALS AND METHODS:A cross-sectional study was conducted with 764 pairs of children and parents/caregivers in presch...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016357.2018.1472294
更新日期:2018-11-01 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::The aim of this study was to evaluate interdental caries incidence and progression in relation to the effect of antibacterial varnish treatments in schoolchildren anticipated at caries risk. After a screening procedure, 110 healthy children (8-10 years) with moderate and high counts of salivary mutans streptococci (MS...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/000163599428878
更新日期:1999-06-01 00:00:00
abstract::Ceramic inlays offer a good alternative to posterior composites, which still show a high polymerization shrinkage. The thin cement layer will reduce the total amount of shrinkage and probably result in a better marginal adaptation and decreased marginal leakage. Fired feldspathic ceramic inlays cemented with either a ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016359409027588
更新日期:1994-06-01 00:00:00
abstract::The purpose of this study was to record the caries status in children attending public primary schools in Nairobi. The sample comprised 513 children, 262 aged 6-8 years and 251 aged 13-15 years. The children were drawn from six randomly selected schools in the city. Clinical examination was carried out in a room with ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016359209012772
更新日期:1992-10-01 00:00:00
abstract::Fixed prosthodontic work ordered by general dental practitioners was examined through registrations made in commercial dental laboratories. A comparison was made with similar data from student files on fixed prosthodontic treatment at the University Clinic in Bergen, Norway, which is located in the same geographic are...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016359009005880
更新日期:1990-08-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to evaluate the effect of residual calcium hydroxide [Ca(OH)2] on the accuracy of an electronic apex locator (EAL). MATERIALS AND METHODS:Working lengths (WLs) of 56 extracted maxillary incisors were determined initially by two different methods. The first method used the 'APEX' rea...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2014.961027
更新日期:2015-02-01 00:00:00
abstract::Three different methods were used to determine working and setting times of periodontal dressings. The Gillmore needle and the rheometer employed were not suitable for recording setting reactions. A penetration test was found applicable for determination of working and setting times for all three dressings although th...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357909004701
更新日期:1979-01-01 00:00:00
abstract:OBJECTIVE:The main goal of periodontal treatment is to control infection and, thereby, curb disease progression. Recent studies have suggested that the use of a laser as an adjunct to scaling and root planing (SRP) might improve the effectiveness of conventional periodontal treatment. The aim of this study was to evalu...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章,随机对照试验
doi:10.3109/00016357.2014.898088
更新日期:2014-11-01 00:00:00
abstract:OBJECTIVE:Semaphorin 3A (Sema3A) is an essential chemorepellant controlling peripheral axon pathfinding and patterning, but also serves non-neuronal cellular functions. Incisors of rodent are distinctive from molars as they erupt continuously, have only one root and enamel is present only on the labial side. The aim of...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2011.600717
更新日期:2012-05-01 00:00:00
abstract::The aim of this epidemiological study was to examine associations between temporomandibular (TMD)-related problems and variables from three domains: (1) socio-economic attributes, (2) general health and health-related lifestyle, and (3) dental attitudes and behaviors. The overall response rate to a questionnaire maile...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350410001649
更新日期:2004-08-01 00:00:00
abstract:OBJECTIVE:Monocyte-derived macrophages (MDMs) ability to phagocytize and produce nitric oxide (NO) was tested against root-canal strains of Enterococcus faecalis submitted to alkaline stress. Root-canal strains were also compared with urine Enterococci. MATERIALS AND METHODS:Enterococcus faecalis were stressed with al...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016357.2018.1533142
更新日期:2019-03-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to compare ligature-induced alveolar bone loss between obese and non-obese rats. MATERIAL AND METHODS:Thirty female Wistar rats were randomly divided into two groups: a test group comprising 14 rats fed with a "cafeteria diet" for 120 days in order to gain weight and a control group...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350802004672
更新日期:2008-06-01 00:00:00
abstract::Overall dental maturity was studied semilongitudinally in a group of 248 healthy children born in Helsinki in 1968-73. In all, 738 orthopantomograms were taken of these children at ages of 2.5-16.5 years. Overall dental maturity was estimated by the method of Demirjian and Goldstein, which is based on the development ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016358608997720
更新日期:1986-08-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to investigate the ultrastructural features of Malassez epithelium (ME) containing protein gene product 9.5 (PGP9.5)-immunoreactive (IR) cells in the cat periodontal ligament (PDL). MATERIAL AND METHODS:Specimens from the teeth and tooth-supporting tissues of four mature cats of both...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350903150002
更新日期:2009-01-01 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:OBJECTIVE:The aim of this study was to investigate the prevalence of dental caries in an adult population using four different cross-sectional studies over a 30-year period and to assess its possible associations with socio-economic and socio-behavioural factors. MATERIALS AND METHODS:Four cross-sectional epidemiologi...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2016.1163733
更新日期:2016-07-01 00:00:00
abstract:OBJECTIVE:The purpose of the study was to compare the effects of two distinct collar geometries of implants on stress distribution in the bone as well as in the fixture-abutment complex, in the framework and in the veneering material of 3-unit fixed partial denture (FPD). MATERIAL AND METHODS:The 3-dimensional finite ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2011.597775
更新日期:2012-01-01 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::The castability of two low-gold and two silver-palladium alloys was evaluated, using a Type III gold alloy as reference. Six castings from each alloy were subjected to a castability test, in which the marginal sharpness of simulated crowns--that is, the edge diameter--was used to assess the castability. The mean crown...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016358609026569
更新日期:1986-06-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the effect of three different irrigating solutions (17% EDTA, 10% citric acid and 2.5% NaOCl) and KTP laser irradiation on apical leakage using an electrochemical method. MATERIALS AND METHODS:Sixty extracted single-rooted human teeth with mature apices were instrume...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章,随机对照试验
doi:10.3109/00016357.2011.615338
更新日期:2012-09-01 00:00:00
abstract::The occlusal traits of Class II occlusion in the deciduous dentition include distal terminal plane of the second deciduous molars, distal canine relation, large overjet, and large overbite. Other findings are narrow upper dental arch and maxillary base and poor anterior spacing. Skeletally, Class II children differ le...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章,评审
doi:10.1080/000163598428356
更新日期:1998-12-01 00:00:00
abstract::Three groups of extracted human teeth were sectioned longitudinally into experimental and control halves. The enamel surfaces of the three groups of teeth were pretreated with 37% H3PO4 for 1 min, 0.5 M NaClO3 for 2 h, or water rinsing for 10 min. The experimental halves of the three groups received an application of ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016359609003538
更新日期:1996-10-01 00:00:00
abstract::A review of the literature on dental treatment was conducted and models presented of the doctor/dentist-patient relationship. These models are listed and divided into two subgroups, empirical and normative models. The models are scrutinized with focus on the dentist-patient communicative relationship exclusively. Diff...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章,评审
doi:10.3109/00016359709115403
更新日期:1997-04-01 00:00:00
abstract:OBJECTIVE:Gingival fibroblasts (GFs) produce pro-inflammatory cytokines in response to stimulation with lipopolysaccharide (LPS) of Porphyromonas gingivalis, which is thought to be mediated by activation of toll-like receptors (TLR)2 and TLR4. The present study investigated the expression of interleukin (IL)-6, TLR2, a...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2013.834535
更新日期:2014-07-01 00:00:00
abstract:OBJECTIVE:Local anesthetics are the most commonly used drugs in dentistry, with a wide range of effects, including antimicrobial activity. High antimicrobial effects have recently been reported on oral microbes from articaine hydrochloride, revealed by the minimum inhibitory concentration and minimal bactericidal conce...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350802443466
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVE:This study evaluated the influence of surface characteristics of various denture lining materials on the adherence of Candida albicans. MATERIALS AND METHODS:Four different types of materials (tissue conditioners, acrylic and silicone soft liners and hard reline materials) were selected. Disk-shaped material...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2012.671360
更新日期:2013-01-01 00:00:00