Abstract:
OBJECTIVE:The purpose of this study was to evaluate the effect of simulated gastric acid solution on surface topography and bending properties of esthetic coated nickel-titanium (NiTi) archwires. MATERIALS AND METHODS:Three brands of as-received white-coated superelastic NiTi upper archwires were used in this study: Dany, Perfect, and Nitanium. Uncoated metallic areas for each white-coated NiTi archwire were used for comparison with the coated areas. The specimens for each archwire were divided into two groups according to coating as follows: Group A, uncoated, and group B, coated. Then, each group was further subdivided into two subgroups according to the immersion medium as follows: Subgroup 1, immersed in artificial saliva, and subgroup 2, immersed in simulated gastric acid. Surface roughness, surface morphology, and three-point bending test were performed. The data were analyzed statistically using ANOVA and Tukey test. RESULTS:The archwires immersed in simulated gastric acid solution showed significantly higher surface roughness and lower forces on loading and unloading than the archwires immersed in artificial saliva (P < 0.001). Perfect archwire showed significantly the highest surface roughness compared with Dany and Nitanium archwires (P < 0.001). The uncoated archwires showed higher loading and unloading forces compared with coated archwires for all groups (P < 0.001). Nitanium archwire showed the lowest loading and unloading forces at different deflections (P < 0.001). CONCLUSIONS:The simulated gastric acid solution decreased considerably the amount of force applied at a given deflection. The loading-deflection and surface roughness properties of coated archwires were affected by the type of coating material. CLINICAL RELEVANCE:The impact of gastric acids on surface and mechanical properties of orthodontic archwires depend on type of coating materials.
journal_name
Clin Oral Investigjournal_title
Clinical oral investigationsauthors
Elsaka S,Hassan A,Elnaghy Adoi
10.1007/s00784-020-03438-7subject
Has Abstractpub_date
2020-07-03 00:00:00eissn
1432-6981issn
1436-3771pii
10.1007/s00784-020-03438-7pub_type
杂志文章abstract:OBJECTIVE:This study aimed to prospectively observe gustatory and neurosensory alterations following surgical removal of mandibular third molars. MATERIAL AND METHODS:A prospective clinical study was conducted with patients who required mandibular third molar extraction, recruited from the Division of Oral and Maxillo...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-018-02798-5
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVES:Root canal treatment failures often correlate with persistent biomaterial-associated endodontic infections. The aim of the present study was to assess the impact of endodontic obturation material sampling from root canals with posttreatment apical periodontitis on improving standard study protocols. MATERIA...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-014-1231-4
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVES:The corona disease (COVID-19) is developing into one of the greatest challenges for healthcare professionals around the world. In this article, we report the detailed actions taken in the Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians-University (LMU), Munich...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-020-03440-z
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVES:To assess the status of health services provision of public tertiary dental hospitals during the COVID-19 epidemic in China and to evaluate the regional difference of telehealth. MATERIALS AND METHODS:The health services provision of public tertiary dental hospitals in China mainland during the COVID-19 epi...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-020-03267-8
更新日期:2020-05-01 00:00:00
abstract::This paper attempts to identify characteristics of a longitudinal clinical study's "dropout" population (1974-1996) of patients using overdentures. This study included 395 subjects. Dropouts were identified as persons who did not respond to letters or telephone calls after participating in the study for up to 2 years,...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-003-0238-z
更新日期:2004-03-01 00:00:00
abstract:OBJECTIVES:The study aimed at assessing, as primary objective, the periapical status and quality of root fillings, and, as secondary objective, the endodontic treatment need of a German urban population in a cross-sectional study 20 years after the first one. MATERIALS AND METHODS:Clinical and radiographic data of 353...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-018-2566-z
更新日期:2019-03-01 00:00:00
abstract::The present study focuses on the correlation between the expression pattern of β-catenin (component of Wnt signaling), ΔNp63 (proliferation marker), and Notch 1 (transmembrane receptor) in oral squamous cell carcinoma. The study also aims to investigate the interaction between β-catenin and ΔNp63 in oral cancer. Furth...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-011-0605-0
更新日期:2012-08-01 00:00:00
abstract:OBJECTIVES:This study aimed to conduct a methodological assessment of paper-based systematic reviews (SR) published in oral health using a validated checklist. A secondary objective was to explore temporal trends on methodological quality. MATERIAL AND METHODS:Two electronic databases (OVID Medline and OVID EMBASE) we...
journal_title:Clinical oral investigations
pub_type: 杂志文章,评审
doi:10.1007/s00784-015-1663-5
更新日期:2016-04-01 00:00:00
abstract:: ...
journal_title:Clinical oral investigations
pub_type: 评论,信件
doi:10.1007/s00784-018-2636-2
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVES:The aim of this study is to compare wound healing and patient pain perception of single-incision (single-incision, modified single-incision) and trap-door surgical techniques to harvest subepithelial connective tissue grafts from the palate. MATERIAL AND METHODS:Thirty-six patients were selected for root co...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-014-1204-7
更新日期:2014-12-01 00:00:00
abstract::The aims of the present study were: a) to assess the impact of the intraoral location on the rate of biofilm growth, and b) to establish an in vivo biofilm model to examine intraoral biofilm growth. Eight healthy volunteers wore acrylic splints with 15 glass slabs each in the upper and lower jaws to build up plaque. A...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-004-0255-6
更新日期:2004-06-01 00:00:00
abstract:OBJECTIVES:To evaluate the prevalence, clinical features, and risk factors of dentin hypersensitivity (DH) in a Brazilian population. MATERIALS AND METHODS:300 patients at the Dentistry Clinic of the University of São Paulo participated in this study. The subjects completed a questionnaire regarding their personal inf...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-013-1008-1
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:The aim of this investigation was to assess the currently available evidence concerning the complications and risk factors influencing the outcome of autotransplantation of teeth in humans. MATERIALS AND METHODS:Electronic searches were conducted to identify randomized controlled and prospective clinical tr...
journal_title:Clinical oral investigations
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s00784-015-1473-9
更新日期:2015-07-01 00:00:00
abstract:OBJECTIVES:Albumin has a known capability to modulate free serum concentrations of proteins produced by tumour cells. The technique of spin probe labelling of albumin followed by electron paramagnetic resonance (EPR) spectroscopy may allow identification of these structural and functional changes, which regularly occur...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-011-0655-3
更新日期:2012-12-01 00:00:00
abstract:OBJECTIVES:The purpose of this prospective clinical trial was to examine the clinical and patient outcomes following esthetic reconstruction of interdental papilla loss in anterior teeth, using an injectable, non-animal-based, hyaluronic acid gel. MATERIALS AND METHODS:Ten systemically healthy adults, with at least on...
journal_title:Clinical oral investigations
pub_type: 临床试验,杂志文章
doi:10.1007/s00784-015-1677-z
更新日期:2016-09-01 00:00:00
abstract:OBJECTIVES:To assess the internal and external morphologies of the mesiobuccal (MB) root of maxillary molars presenting a third root canal (MB3), using micro-computed tomography (micro-CT). MATERIAL AND METHODS:Two-hundred and sixty-five extracted maxillary first and second molars with different root configurations we...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-020-03284-7
更新日期:2020-11-01 00:00:00
abstract::The aims of this paper were to critically review the role of radiographic imaging before lower third molar removal and to suggest a strategy for preoperative imaging based on available scientific evidence and clinical experience. Original articles and reviews including the MESH terms "third molar" and "radiography" we...
journal_title:Clinical oral investigations
pub_type: 杂志文章,评审
doi:10.1007/s00784-008-0200-1
更新日期:2008-12-01 00:00:00
abstract:OBJECTIVES:Sialolithiasis is the most common cause of chronic sialadenitis of the submandibular gland (SMG). Symptomatic superficial lobe stones are often treated by submandibulectomy. A gland preserving operation allows for transoral stone removal through endoscopically assisted sialolithotomy. Herein, we provide clin...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-019-02853-9
更新日期:2019-11-01 00:00:00
abstract:OBJECTIVES:To explore whether a computed tomography (CT) examination of the head and neck region induces biological damage and whether the damage was correlated with the radiation dose. MATERIALS AND METHODS:Peripheral blood was taken from 33 individuals who received head and neck CT examinations. Blood samples were d...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-020-03331-3
更新日期:2020-12-01 00:00:00
abstract:OBJECTIVES:This study was designed to investigate the antimicrobial properties, compressive strength and fluoride release capacities of high-viscous glass ionomer cements (GICs) after incorporation of cinnamon and thyme essential oils. MATERIALS AND METHODS:Experimental-modified GICs were prepared by incorporation of ...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-020-03493-0
更新日期:2020-08-15 00:00:00
abstract:OBJECTIVES:This study examines accuracy of dental impressions and following plaster models taken during treatment with fixed appliances. MATERIALS AND METHODS:A maxillary typodont was provided with brackets. Three examiners took impressions three times each of the variants: brackets only, archwire fixed by alastics, l...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-015-1514-4
更新日期:2016-03-01 00:00:00
abstract:OBJECTIVES:The aim of the study was to introduce a novel three-dimensional (3D) method to quantify the relative amount of different tissue components in bone substitute-treated defects by means of integration of confocal laser imaging into micro-computed tomography (μCT) analysis. MATERIALS AND METHODS:One standardize...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-013-1081-5
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND:Interleukin 8 (IL-8) is a pro-angiogenic, pro-inflammatory mediator that belongs to the family of chemokines. Due to its pro-angiogenic characteristic, it may play a vital role in tumour angiogenesis and progression. OBJECTIVES:This study was designed to estimate the levels of salivary IL-8 in oral precance...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-012-0723-3
更新日期:2013-03-01 00:00:00
abstract:AIM:The aim of this study was to compare the effectiveness of 2% articaine and 2% lignocaine in achieving adequate anesthesia in children between the age group of 6-13 years using inferior alveolar nerve block. METHODS:A triple blinded randomized controlled trial was conducted in 180 participants (90 patients- 2% arti...
journal_title:Clinical oral investigations
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00784-018-2775-5
更新日期:2019-09-01 00:00:00
abstract:OBJECTIVES:To evaluate the mRNA expression levels of cytokines interferon-γ, tumour necrosis factor-α, interleukin IL-1β, IL-10, and the chemokine CCL2/MCP-1, CCL4, and CXCR4 in the periapical interstitial fluid from root canal infections before and after bacterial load reduction in patients undergoing haematopoietic s...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-020-03448-5
更新日期:2020-07-14 00:00:00
abstract:OBJECTIVES:The aim of this study was to compare mechanical sensitivity on the tongue using quantitative sensory testing (QST) and psychological factors using the General Health Questionnaire (GHQ) between burning mouth syndrome (BMS) patients and healthy participants. MATERIALS AND METHODS:Participants comprised 20 fe...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-018-2488-9
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVES:It was the aim of the study to analyse the prevalence of maxillofacial trauma (MFT) in severely injured patients after road traffic accidence (RTA) and to investigate associated factors. MATERIALS AND METHODS:In a retrospective study, data from patients after RTA by the TraumaRegister DGU® from 1993 to 2014...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-019-03024-6
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVES:There is a long history of studies into cystic lesions of the jaws. However, there is little data on postoperative bone regeneration. The aim of the study was to calculate the size of the residual bone lesions after cystostomies and cystectomies to predict the postoperative bone healing. MATERIAL AND METHOD...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-019-02826-y
更新日期:2019-11-01 00:00:00
abstract:OBJECTIVES:Several theories have been proposed regarding the genesis of sialoliths, including the organic core theory, which suggests epithelial or bacterial etiology originating in the central core. Our aim was to use novel methodologies to analyze central areas (the core) of calculi from sialolithiasis patients. MAT...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s00784-012-0870-6
更新日期:2013-09-01 00:00:00
abstract::Resin-bonded fixed partial dentures (RBFPD) are used as a minimal invasive, tooth-preventing alternative for replacing anterior teeth. Zirconia cantilever restorations were supposed to show sufficient strength for a clinical application. The aim of this investigation was to determine the fracture characteristics of ca...
journal_title:Clinical oral investigations
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00784-009-0254-8
更新日期:2009-12-01 00:00:00