Abstract:
:In clinical endodontics, preoperative estimation of root canal curvature is crucial regarding the prevention of iatrogenic errors. Reproduction of the two-dimensional radiographic images causes certain proximal view curvatures not seen. Therefore, the present study is aimed at investigating the degree of root canal curvature identified in different radiographic views. A total of 60 human permanent single-rooted teeth with varying degrees of curvature were selected. The root canal curvature for each tooth was measured on cone-beam computed tomography (CBCT) images (clinical view), standard digital periapical view (0° angle), digital periapical horizontal parallax view (30° angle), and digital periapical proximal view (0° angle), by using the Schneider method. No statistically significant difference was found in the degree of curvatures estimated on CBCT images and standard digital periapical view (0° angle) in the same tooth. The results revealed a significant difference between the proximal view and the other three groups (p < 0.05). There was no significant difference in this respect between the horizontal parallax view (30° angle), clinical view (CBCT images), and standard digital periapical view (p > 0.05). Proximal view curvatures cannot be predicted or estimated only from examining a clinical view radiograph. A horizontal parallax view (30° angle) is highly recommended as specific guidelines on how to estimate root canal curvature in case difficulty assessment protocols.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Faraj BMdoi
10.1155/2021/6699635subject
Has Abstractpub_date
2021-01-13 00:00:00pages
6699635eissn
2314-6133issn
2314-6141journal_volume
2021pub_type
杂志文章abstract::The pathogenesis of intractable epilepsy is not fully clear. In recent years, both animal and clinical trials have shown that the expression of ATP-binding cassette (ABC) transporters is increased in patients with intractable epilepsy; additionally, epileptic seizures can lead to an increase in the number of sites tha...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2015/194541
更新日期:2015-01-01 00:00:00
abstract::We demonstrate the potential of differentiating embryonic and induced pluripotent stem cells by the regularized linear and decision tree machine learning classification algorithms, based on a number of intragene methylation measures. The resulting average accuracy of classification has been proven to be above 95%, whi...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/976362
更新日期:2015-01-01 00:00:00
abstract::Breast cancer is the leading cause of death in women worldwide. The search for novel compounds with antitumor activity, with less adverse effects and higher efficacy, and the development of methods to evaluate their toxicity is an area of intense research. In this study we implemented the preparation and culture of br...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/618021
更新日期:2015-01-01 00:00:00
abstract:Methods:The implantation sites, fetus resorption, and abnormal fetuses were studied in pregnant mice treated with different doses of BaP by oral gavage from day 1 to day 10 of gestation. Additionally, apoptosis and related signaling pathway, and the migration and invasion of trophoblasts, were assessed before and after...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/8983494
更新日期:2020-10-16 00:00:00
abstract::Vocal tract morphology is an important factor in voice production. Its analysis has potential implications for educational matters as well as medical issues like voice therapy. The knowledge of the complex adjustments in the spatial geometry of the vocal tract during phonation is still limited. For a major part, this ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/906356
更新日期:2015-01-01 00:00:00
abstract::The purpose of this paper is to examine how well the human induced pluripotent stem cell (hiPSC) colony images can be classified using error-correcting output codes (ECOC). Our image dataset includes hiPSC colony images from three classes (bad, semigood, and good) which makes our classification task a multiclass probl...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/3025057
更新日期:2016-01-01 00:00:00
abstract::Gedunin is one of the major compounds found in the neem tree (Azadirachta indica). In the present study, antiproliferative potential of gedunin was evaluated in human embryonal carcinoma cells (NTERA-2, a cancer stem cell model) and peripheral blood mononuclear cells (PBMCs), using Sulforhodamine (SRB) and WST-1 assay...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/2413197
更新日期:2017-01-01 00:00:00
abstract::The aims of the present research are to investigate the possible predictors of pancreatic cancer, in particular smoking status, alcohol consumption, hypercholesterolemia, and diabetes mellitus, in patients with histologically confirmed pancreatic carcinoma and to examine the synergism between risk factors. A case-cont...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2014/481019
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVE:This study investigates the safety and efficacy of a multimodality approach combining staged endovascular embolizations with subsequent SRS for the management of larger AVMs. METHODS:Ninety-five patients with larger AVMs were treated with staged endovascular embolization followed by SRS between 1996 and 2011...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2014/306518
更新日期:2014-01-01 00:00:00
abstract::A prospective nonrandomized controlled study was conducted to explore the association between ocular dominance and degree of myopia in patients with anisometropia and to investigate the character of visual evoked potential (VEP) in high anisometropias. 1771 young myopia cases including 790 anisometropias were recruite...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/5064892
更新日期:2016-01-01 00:00:00
abstract::The similarity-based retrieval of lung nodule computed tomography (CT) images is an important task in the computer-aided diagnosis of lung lesions. It can provide similar clinical cases for physicians and help them make reliable clinical diagnostic decisions. However, when handling large-scale lung images with a gener...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/3162649
更新日期:2016-01-01 00:00:00
abstract:Aim:The aim of this study is to assess the awareness of biomedical waste management in dental students of various dental colleges of Nepal. Methodology:A structured pretested questionnaire was used among 434 (323 males and 111 females) undergraduate dental students of five different dental colleges of Nepal. First par...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/1742326
更新日期:2018-12-09 00:00:00
abstract::Approximately 40% of patients admitted to the medical intensive care unit (ICU) require mechanical ventilation. An accurate prediction of successful extubation in patients is a key clinical problem in ICU due to the fact that the successful extubation is highly associated with prolonged ICU stay. The prolonged ICU sta...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/6820975
更新日期:2018-01-04 00:00:00
abstract::Feed efficiency (FE) is an important trait affecting costs in swine industry. Investigation on FE-related genes in different tissues is valuable for molecular breeding. Hypothalamus is a convergent and integrated centre for multiple nutrient-related signals. The present study identified 363 differentially expressed (D...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/5862571
更新日期:2018-12-26 00:00:00
abstract::DNA methylation primarily occurs on CpG dinucleotides and plays an important role in transcriptional regulations during tissue development and cell differentiation. Over 25% of CpG dinucleotides in the human genome reside within Alu elements, the most abundant human repeats. The methylation of Alu elements is an impor...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/784706
更新日期:2014-01-01 00:00:00
abstract::Calcium phosphate cement (CPC) has good release efficiency and has therefore been used as a drug delivery system for postoperative infection. The release profile of CPC has mainly been evaluated by in vitro studies, which are carried out by immersing test specimens in a relatively large amount of solvent. However, it ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/4560647
更新日期:2018-05-15 00:00:00
abstract:UNLABELLED:The aim of the study was to determine the effect of different muscle length and visual feedback information (VFI) on accuracy of isometric contraction of elbow flexors in men after an ischemic stroke (IS). MATERIALS AND METHODS:Maximum voluntary muscle contraction force (MVMCF) and accurate determinate musc...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/7641705
更新日期:2016-01-01 00:00:00
abstract::Studies pertaining to trans fatty acids (TFA), which have been implicated in development of chronic diseases, are more relevant in developing countries where nutrition transition is changing traditional habits and practices. Measuring TFA is an arduous task because of the need for fat biopsies. This study identifies a...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/276174
更新日期:2013-01-01 00:00:00
abstract::Staphylococcal food-borne disease (SFD) is one of the most common food-borne diseases worldwide resulting from the contamination of food by preformed S. aureus enterotoxins. It is one of the most common causes of reported food-borne diseases in the United States. Although several Staphylococcal enterotoxins (SEs) have...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/827965
更新日期:2014-01-01 00:00:00
abstract:UNLABELLED:Ehlers-Danlos syndrome hypermobility type a. k. a. joint hypermobility syndrome (JHS/EDS-HT) is a hereditary musculoskeletal disorder associating generalized joint hypermobility with chronic pain. Anecdotal reports suggest a prominent role for kinesiophobia in disease manifestations, but no study has systema...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/580460
更新日期:2013-01-01 00:00:00
abstract::Heat shock proteins 70 and heat shock proteins 90 (Hsp70/90) have been implicated in many crucial steps of carcinogenesis: stabilizing oncogenic proteins, inhibiting programmed cell death and replicative senescence, induction of tumor angiogenesis, and activation of the invasion and metastasis. Plenty of cancer relate...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/239164
更新日期:2014-01-01 00:00:00
abstract:Background:Acute myocardial infarction (AMI) is regarded as an urgent clinical entity, and identification of differentially expressed genes, lncRNAs, and altered pathways shall provide new insight into the molecular mechanisms behind AMI. Materials and Methods:Microarray data was collected to identify key genes and ln...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/1470867
更新日期:2020-10-06 00:00:00
abstract:Result:In the denture wearers, HHV8 DNA was detected in 11 cases. Two of the controls amplified HHV8 DNA. Fisher's exact test demonstrates a significant difference between virus infection and using removable dentures (p = 0.015). Conclusion:Our findings suggested that HHV8 detection could be associated with use of den...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/9358947
更新日期:2020-04-15 00:00:00
abstract:OBJECTIVE:Greater skeletal muscle fat infiltration occurs with age and contributes to numerous negative health outcomes. The primary purpose was to determine whether intermuscular adipose tissue (IMAT) can be influenced by an exercise intervention and if a greater reduction in IMAT occurs with eccentric versus traditio...
journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2014/398960
更新日期:2014-01-01 00:00:00
abstract:Objective:The objective was to study the risk and protective factors involved in retinal vascular development of preterm infants with retinopathy of prematurity. Methods:Between 2000 and 2017, 185 preterm infants were included in the protocol for retinopathy of prematurity. Risk factors associated with speed of retina...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/2721578
更新日期:2019-04-24 00:00:00
abstract::This paper reports the results of an ethnobotanical survey on the use of medicinal plants by community healers "Hampiyachakkuna" in the San Lucas Parish, province of Loja, Ecuador. A particular ethnic group, the indigenous Saraguros, inhabits this region. This study reports 183 plant species used in 75 different curat...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/9343724
更新日期:2017-01-01 00:00:00
abstract::Fatty acids (C6-C18) found in human amniotic fluid, colostrum, and maternal milk reduce behavioral indicators of experimental anxiety in adult Wistar rats. Unknown, however, is whether the anxiolytic-like effects of fatty acids provide a natural mechanism against anxiety in young offspring. The present study assessed ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/8798546
更新日期:2017-01-01 00:00:00
abstract:INTRODUCTION:Osteomyelitis is a severe orthopaedic complication which is difficult to diagnose and treat. Previous experimental studies mainly focussed on evaluating osteomyelitis in the presence of an implant or used a sclerosing agent to promote infection onset. In contrast, we focused on the longitudinal assessment ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/424652
更新日期:2014-01-01 00:00:00
abstract::It is increasingly affirmed that most of the long-term consequences of TBI are due to molecular and cellular changes occurring during the acute phase of the injury and which may, afterwards, persist or progress. Understanding how to prevent secondary damage and improve outcome in trauma patients, has been always a tar...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2015/736104
更新日期:2015-01-01 00:00:00
abstract::Breast cancer mortality disparities continue, particularly for uninsured and minority women. A number of effective evidence-based interventions (EBIs) exist for addressing barriers to mammography screening; however, their uptake and use in community has been limited. Few cancer-specific studies have evaluated adapted ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/240240
更新日期:2015-01-01 00:00:00