Abstract：
OBJECTIVE:To investigate the effect of age on root resorption and distribution along different parts of the root during prolonged light force application. MATERIAL AND METHODS:Orthodontic appliances were placed in two groups of 30 rats (one group 6 weeks old, the other 9-12 months old), with contralateral sides as controls. Groups of animals were killed at 1, 2, 4, 8, and 12 weeks. At the study site, incidence was counted as either 1 (with resorption) or 0 (without); severity was measured as the summed length of all resorption lacunae as a percentage of study total root length. RESULTS:Young and adult rats had the same incidence of root resorption in the early phase (<4 weeks), and both increased in the late phase (4-12 weeks) to the same level. Severity of resorption increased with prolonged tooth movement only in adult rats. However, there was no age-related difference in either the early or the late phase. In both groups, the middle part of the root had the highest incidence of resorption; the most severe resorption occurred exclusively at this part. CONCLUSION:Orthodontic intervention even with light forces increased both the incidence and severity of root resorption, the more so in the middle part of the root. Adult rats had increased incidence and severity with prolonged tooth movement.
journal_name
Acta Odontol Scandjournal_title
Acta odontologica Scandinavicaauthors
Ren Y,Maltha JC,Liem RS,Stokroos I,Kuijpers-Jagtman AMdoi
10.1080/00016350801982522subject
Has Abstractpub_date
2008-04-01 00:00:00pages
93-8issue
2eissn
0001-6357issn
1502-3850pii
791856139journal_volume
66pub_type
杂志文章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：OBJECTIVE:This study was undertaken to determine the potential of dental adhesive products to induce mucosal irritation based on their ability to damage the blood vessels of the chorioallantoic membrane (CAM) in fertilized hen's egg. MATERIAL AND METHODS:Twenty-seven dental adhesive products (total 36 solutions) cover...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.1080/00016350701589286
更新日期：2007-10-01 00:00:00
abstract：:The abrasion responses were tested on four acrylic veneer materials, K + B Plus, K + B 75, Isosit, and Ivocron. The studies were performed in two independent research laboratories. Two different brushing machines were used with an abrasive slurry. The results were used for comparing the degree of abrasion for the resi...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016358409033617
更新日期：1984-12-01 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：:The aim of this study was to evaluate the caries-preventive effect of an oral health program for preschool children living in a multicultural, low socio-economic area. In total, 804 2-year-old children were invited and recalled every 3rd month to an outreach facility for parent education and toothbrushing instruction....
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.1080/00016350510019900
更新日期：2005-06-01 00:00:00
abstract：OBJECTIVE:Composite restorative materials represent one of the most important groups of materials in contemporary dental practice. However, their incomplete polymerization may lead to monomer-induced genotoxicity. The objective of this study was to evaluate the genotoxicity of three flowable (Filtek Supreme XT Flow, Te...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357.2012.734419
更新日期：2013-05-01 00:00:00
abstract：:A series of in vitro studies were carried out to determine the effect of commerically available alginate impression materials and gels on enamel solubility. This was performed by 4-min topical application of the tested products on partially demineralized enamel surfaces. The difference in the amounts of calcium and ph...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016358408993869
更新日期：1984-06-01 00:00:00
abstract：:An epidemiological study was performed in 250 persons who five years previously had been treated with extensive metallic reconstructions. To gain representative information these persons were selected at random from three Local Social Insurance Offices in different parts of Sweden. Those person, who in a questionnaire...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016358209025111
更新日期：1982-01-01 00:00:00
abstract：OBJECTIVE:To evaluate oral fluoride (F) retention after using fluoridated toothpastes, rinsing solutions and chewing sticks (Miswaks) in orthodontic patients with and without orthodontic appliances. MATERIAL AND METHODS:Nine orthodontic patients, with a mean age of 16 years, were included in a randomized, cross-over, ...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章,随机对照试验
doi：10.3109/00016350903571723
更新日期：2010-07-01 00:00:00
abstract：:Candida fungi are frequent in the oral cavity, especially in denture wearers. The infection can cause serious complications in elderly or debilitated subject. The present experimental group consisted of 81 female psychiatric patients (35--91 years of age). In addition to a clinical examination, smears from the palate,...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357909004708
更新日期：1979-01-01 00:00:00
abstract：:A bacteriological investigation has been made in two cases of persistent periapical infections. Neither of the two infections responded to root canal therapy including penicillin or penicillin and erythromycin. Samples were taken aseptically for bacteriological examination through and root canals. Chloroform-washed, s...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016358309162299
更新日期：1983-01-01 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：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：OBJECTIVES:The aim of this study was to evaluate the plaque pH level and ureolytic activity among children and adults of Karen Hill tribes. METHODS:Thirty-four children aged 6-10 years and 46 adults aged 20-38 years were interviewed regarding oral hygiene practices, sucrose intake and betel chewing. Caries experience ...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357.2013.794952
更新日期：2014-04-01 00:00:00
abstract：OBJECTIVE:A 2-month randomized clinical trial (RCT) study comparing electric and manual toothbrushes used by residents in nursing homes showed significant reduction in plaque score for both groups. The aim of this follow up study was to study if the effect sustained in a longer perspective when toothbrushes were used a...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章,随机对照试验
doi：10.1080/00016357.2017.1416166
更新日期：2018-05-01 00:00:00
abstract：:An index for evaluation of dental wear based on Ryge's system comprising three satisfactory and two not acceptable categories was tested in two different age groups of individuals with brain damage. Group 1 consisted of 12 individuals, 3 women and 9 men, with a mean age of 34.5 years. Group 2 consisted of 13 individua...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016358709096359
更新日期：1987-10-01 00:00:00
abstract：:This in vitro study evaluated curing depths of a universal hybrid resin composite with two viscosities (Tetric Ceram and Tetric Flow) after curing with 6 different quartz tungsten halogen and light-emitting diode curing units. Irradiance (light intensity) of the curing units varied between 200 and 700 mW/cm2. The curi...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.1080/00016350410006905
更新日期：2004-04-01 00:00:00
abstract：OBJECTIVES:Because of its good matching performance the VITA 3D-Master shade guide (3D) is frequently used for determination of tooth color. Numerous composites/ceramics are, however, available in VITA Classical (VC) shades only. The objective of this study was to investigate the possibility of performing a shade match...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357.2012.715197
更新日期：2013-05-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to compare the protective effect of TiF(4), SnF(2), and NaF treatment on the development of erosion-like lesions in pellicle-covered human enamel. MATERIAL AND METHODS:Twelve human molars were each divided into 5 specimens, 4 of which were immersed in saliva for 2 h. Three pellicle-...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.1080/00016350701477581
更新日期：2007-10-01 00:00:00
abstract：:Epidemiological data, particularly concordance rates in twin pairs and in multiply affected families, provide strong evidence that both genetic and environmental influences are important in the development of the chronic intestinal inflammation characteristic of Crohn disease and ulcerative colitis. Furthermore, suppl...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章,评审
doi：10.1080/000163501750266800
更新日期：2001-06-01 00:00:00
abstract：:A method to analyse cephalometric radiographs with the help of a computer has been described. With the system a cephalometric radiograph can be analysed and the results compared to corresponding analyses of individuals with ideal occlusion. The results can also be visualized as schematic figures of the patients. The c...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357809029087
更新日期：1978-01-01 00:00:00
abstract：OBJECTIVE:To investigate the expression of Wnt3a, Wnt10b, β-catenin and DKK1 in the periodontal ligament (PDL) during orthodontic tooth movement (OTM) in rats. MATERIALS AND METHODS:Nickel-titanium closed-coil springs were used to deliver an initial 50 g mesial force to the left maxillary first molars in 30 rats. The ...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357.2015.1090011
更新日期：2016-01-01 00:00:00
abstract：OBJECTIVE:To investigate the failure of 15 dental implants (Paragon/Zimmer) in relation to their surface quality. MATERIALS AND METHODS:The study comprised of 15 dental implants (7 mm D Advent Implant, 3.9 mm D apex design implant), which were followed from surgery to completion of prosthetic restorations. The implant...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357.2011.569507
更新日期：2011-11-01 00:00:00
abstract：:Thirty-two teeth with artificial crowns cemented with four different cements were sectioned and the cementing interfaces were studied by means of a replica technique. Scanning electronic microscopic examination of the replicas demonstrated that slits occurred in all specimens either at the cement/tooth interface, the ...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357809004664
更新日期：1978-01-01 00:00:00
abstract：OBJECTIVE:To assess the staining susceptibility of four acrylic resin (Ivostar, SR Vivodent PE, Major Dent, Integral) and a nanocomposite resin (Veracia) artificial teeth and to evaluate the stain removal efficacy of denture cleansers. MATERIALS AND METHODS:Sixty maxillary incisors of each brand (total = 300) were div...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357.2014.913195
更新日期：2014-11-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to measure dimensional changes due to hygroscopic expansion and the bioactivity of two experimental methacrylate-based dental adhesives either incorporating Bioglass 45S5 (3-E&RA/BG) or MTA (3-E&RA/WMTA). MATERIALS AND METHODS:3-E&RA/BG, 3-E&RA/WMTA and a control filler-free resin b...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.3109/00016357.2013.878808
更新日期：2014-11-01 00:00:00
abstract：:Salivary mutans streptococci count, dental status, and related factors were studied in male industrial workers (age 38-65 years) with or without access to subsidized dental care. Altogether 315 subsidized workers and 168 controls without subsidy were compared. A prior questionnaire survey had shown that the two study ...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章
doi：10.1080/000163599428959
更新日期：1999-04-01 00:00:00
abstract：:The paper is a shortened version of a paper read at the symposium on craniofacial growth, in which the literature on various aspects of sutures was reviewed. Suture development, structure, growth, and closure are covered, and the response of sutures to orthopedic forces and their role in craniosynostosis exemplified. ...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章,评审
doi：10.3109/00016359509005965
更新日期：1995-06-01 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：:Bulimia nervosa is increasingly recognized as an eating disorder with significant medical and dental complications, including increased caries rate, thermal hypersensitivity, enamel erosion, xerostomia, and parotid gland hypertrophy. This article reviews the oral manifestations in bulimia nervosa and presents a questi...
journal_title：Acta odontologica Scandinavica
pub_type： 杂志文章,评审
doi：10.3109/00016359109005929
更新日期：1991-12-01 00:00:00
