Argy Polychronopoulou

Argy Polychronopoulou
National and Kapodistrian University of Athens | uoa · Faculty of Dentistry

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114
Publications
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Publications

Publications (114)
Article
Full-text available
Background: Correction of dentofacial deformities via orthodontics is an integral part of oral health as promotes optimal function, periodontal health, aesthetics and overall oral health-related quality of life. The aim of this study was to examine whether paediatricians examine their patients to orthodontists, whether they have sufficient knowledg...
Article
Background/objectives: The aim of this study was to identify outcome-related discrepancies between registry trial entries and final published reports in orthodontic randomized controlled trials (RCTs). The percentage of registered orthodontic RCTs was also recorded. Materials/method: Five trial registries, ClinicalTrials.gov (https://clinicaltri...
Article
Objective: To investigate the short-term influence of the advertising of cariogenic foods on children's dietary preferences, and the possible moderating effect of several factors on this influence. Methods: One-hundred and eighty-three children, 11-12 years of age, were exposed to advertisements showing sugary food and non-food items, in a withi...
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Full-text available
Summary AIM : To assess the prevalence of adjustment for confounding within statistical analysis and matching at the design stage in leading orthodontic journals and to explore potential associations between accounting for confounding and publication characteristics. Twenty-four issues of four leading orthodontic journals with the highest impact fa...
Article
Assessment of the quality of reporting in abstracts of systematic reviews with meta-analyses in periodontology and implant dentistry. Faggion CM Jr., Liu J, Huda F, Atieh M. J Periodontal Res 2014; 49(2):137-42. Argy Polychronopoulou, DDS, MS, ScM, ScD PURPOSE/QUESTION: What is the reporting quality of meta-analysis results of abstracts of systemat...
Article
Both randomized and nonrandomized studies are integral to orthodontic research and practice because they permit evaluation of relationships between exposures and outcomes, allowing the efficacy, effectiveness, and safety of interventions to be assessed. These designs allow clinical decisions to be informed. Nonrandomized designs include nonrandomiz...
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Full-text available
Decision-making based on reliable evidence is more likely to lead to effective and efficient treatments. Evidence-based dentistry was developed, similarly to evidence-based medicine, to help clinicians apply current and valid research findings into their own clinical practice. Interpreting and appraising the literature is fundamental and involves t...
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Objectives: To investigate the extent and nature of food advertising to children on Greek television, focusing on the adverts for foods with potential harmful effects on oral health, and to examine the persuasive marketing techniques used to promote food products. Methods: Advertisements broadcast on six TV-channels during children's peak viewin...
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The aim of this study was to investigate the association of extracurricular factors including socioeconomic status and career choice with perceived stress in dental school in a large cohort of Colombian dental students. Participants in the study were 5,700 students enrolled in seventeen Colombian dental schools. The study employed a Spanish adaptat...
Article
The purpose of this study was to identify the prevalence of cervical dentin hypersensitivity in a cross-sectional investigation of Greek adults. Seven hundred and sixty-seven subjects were examined. Participants were patients processed for first examination in the Clinic of Oral Diagnosis and Radiology at the Faculty of Dentistry, University of Ath...
Article
This study investigated the variation in the oral examination findings and the subjective oral complaints between older people with and without mental disorders. An interview and an oral investigation were performed in a group of older patients with mental disorders with a mean age of 71.9 years and in a group of older people without mental disease...
Article
The objective of this trial was to compare the survival rates of mandibular lingual retainers bonded with either chemically cured or light-cured adhesive after orthodontic treatment. Patients having undergone orthodontic treatment at a private orthodontic office were randomly allocated to fixed retainers placed with chemically cured composite or li...
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Factorial designs for clinical trials are often encountered in medical, dental, and orthodontic research. Factorial designs assess two or more interventions simultaneously and the main advantage of this design is its efficiency in terms of sample size as more than one intervention may be assessed on the same participants. However, the factorial des...
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Links between the demanding nature of studies in the health sciences, students' personality traits and psychological distress have been well-established. While considerable amount of work has been done in medicine, evidence from the dental education arena is sparse and data from Latin America are lacking. The authors conducted a large-scale investi...
Article
The aim of this study was to investigate the reporting completeness of systematic review (SR) abstracts in leading dental specialty journals. Electronic and supplementary hand searching were undertaken to identify SRs published in seven dental specialty journals and in the Cochrane Database of Systematic Reviews. Abstract reporting completeness was...
Article
Objectives: A widespread assessment of the reporting of RCT abstracts published in dental journals is lacking. Our aim was to investigate the quality of reporting of abstracts published in leading dental specialty journals using, as a guide, the CONSORT for abstracts checklist. Methods: Electronic and supplementary hand searching were undertaken...
Article
Introduction: The prevalence of high levels of stress as well as its multilevel consequences is well documented amongst students in the health sciences, and particularly in dentistry. However, investigations of perceived stress amongst Spanish-speaking student groups are sparse. This study aimed to (i) describe the translation, adaptation and psyc...
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Split-mouth designs first appeared in dental clinical trials in the late sixties. The main advantage of this study design is its efficiency in terms of sample size as the patients act as their own controls. Cited disadvantages relate to carry-across effects, contamination or spilling of the effects of one intervention to another, period effects if...
Chapter
This chapter addresses key issues related to the design of epidemiologic studies as they apply to research in orthodontics. First, the fundamental measures of epidemiology and measures derived from them to quantify causal effects are presented. In addition, basic epidemiologic study design strategies as well as their strengths and limitations are e...
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Background: The purpose of this retrospective case series study is to identify possible preoperative parameters that could predict postoperative probing depth (PD), clinical attachment level (CAL) gain, or radiographic defect resolution in intrabony defects treated with enamel matrix derivative (EMD). Methods: Sixty-one chronic periodontitis pat...
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Cluster randomized trials (CRTs) use as the unit of randomization clusters, which are usually defined as a collection of individuals sharing some common characteristics. Common examples of clusters include entire dental practices, hospitals, schools, school classes, villages, and towns. Additionally, several measurements (repeated measurements) tak...
Article
INTRODUCTION: Optimal reporting of randomized trials and abstracts enhances transparency and facilitates assessment and identification of trials. The purpose of this study was to investigate the quality of reporting of abstracts of randomized controlled trials published in orthodontic journals. METHODS: Electronic searches with supplementary hand s...
Article
Stress and burnout have been well-documented in graduate medical and undergraduate dental education, but studies among dental graduate students and residents are sparse. The purpose of this investigation was to examine perceived stressors and three dimensions of burnout among dental residents enrolled in the University of Bern, Switzerland. Thirty-...
Article
Aim: The aim of this study was to investigate the prevalence of self-reported oral complaints in older hospitalized mentally ill patients and relate them to the primary psychiatric diagnosis. Methods: A total of 89 older hospitalized psychiatric patients consented to participate in the study, and were interviewed and clinically examined. The med...
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Background Dental caries is the result of a complex interplay of multiple determinants which may change overtime. Therefore, periodic surveys of caries experience and redetermination of the risk indicators of the disease are needed. The aim of this study was to assess the prevalence and severity of coronal and root caries in Greeks aged 35-44 and 6...
Article
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Objectives: To assess the reporting quality of Cochrane and non-Cochrane systematic reviews (SR) in orthodontics and to compare the reporting quality (PRISMA score) with methodological quality (AMSTAR criteria). Materials and methods: Systematic reviews (n = 109) published between January 2000 and July 2011 in five leading orthodontic journals w...
Article
In this study, we aimed to investigate whether studies published in orthodontic journals and titled as randomized clinical trials are truly randomized clinical trials. A second objective was to explore the association of journal type and other publication characteristics on correct classification. American Journal of Orthodontics and Dentofacial Or...
Article
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The aims of this study were to assess and compare the methodological quality of Cochrane and non-Cochrane systematic reviews (SRs) published in leading orthodontic journals and the Cochrane Database of Systematic Reviews (CDSR) using AMSTAR and to compare the prevalence of meta-analysis in both review types. A literature search was undertaken to id...
Article
This study investigated factors associated with perceptions of complete dentures (CDs) among patients presenting at a university dental clinic. A retrospective chart review of all new edentulous patients presenting at the Athens University School of Dentistry Removable Prosthodontics Clinic between 1993 and 2002 (n = 2,526) was completed. More than...
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The aims of this study were to investigate the prevalence of tooth loss in Greek individuals aged 35 to 44 and 65 to 74 years in relation to sociodemographic parameters and to describe their prosthetic status and needs. A stratified cluster sample of 1,188 middle-aged adults and 1,093 senior citizens was selected according to World Health Organizat...
Article
doi: 10.1111/j.1741-2358.2012.00633.x Oral health status of elderly hospitalised psychiatric patients Objectives: This study investigated the oral health status of an elderly mentally ill population hospitalised in a psychogeriatric ward in Athens. Materials and methods: A structured interview recorded sociodemographic and dental data, and an ora...
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To study the caries prevalence and caries experience of 5, 12 and 15-year-old children in Greece and evaluate how the disease pattern is related to their sociodemographic parameters. A stratified cluster sample of 1209, 1224 and 1257 of five, twelve and fifteen-year-old Greek children were randomly selected according to WHO guidelines for national...
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Available from: http://www.intechopen.com/articles/show/title/periodontal-diseases-in-greek-senior-citizens-risk-indicators
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To investigate oral hygiene and periodontal status of 12- and 15-year old Greek adolescents, in relation to sociodemographic and behavioural parameters. A stratified cluster sample of 1,224 12-year old and 1,257 15-year old adolescents of Greek nationality were selected and examined by calibrated examiners. Periodontal and oral hygiene status were...
Article
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Available from: http://www.intechopen.com/articles/show/title/periodontal-diseases-in-greek-senior-citizens-risk-indicators
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In orthodontics, multiple site observations within patients or multiple observations collected at consecutive time points are often encountered. Clustered designs require larger sample sizes compared to individual randomized trials and special statistical analyses that account for the fact that observations within clusters are correlated. It is the...
Article
Proper sample size estimation is an important part of clinical trial methodology and closely related to the precision and power of the trial's results. Trials with sufficient sample sizes are scientifically and ethically justified and more credible compared with trials with insufficient sizes. Planning clinical trials with inadequate sample sizes m...
Article
The aim of this study was to investigate the opinions of the faculty and students of the University of Athens Dental School in Greece regarding the appropriate penalty for specific academic offenses. In addition, faculty and student opinions were compared. A questionnaire was distributed to officially registered seniors and full-time faculty member...
Article
Our aim in this study was to compare intermolar widths after alignment of crowded mandibular dental arches in nonextraction adolescent patients between conventional and self-ligating brackets. Fifty patients were included in this randomized controlled trial according to the following inclusion criteria: nonextraction treatment in both arches, erupt...
Article
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To estimate the frequency in use of oral health services, oral health self-assessment, oral hygiene practices of 12- and 15-year-old Greek children and adolescents, to investigate possible influences of these factors and other socio-demographic parameters on oral health. A stratified cluster sample of 1224 12 year old and 1257 15 year old children...
Article
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The purpose of this study was to search the orthodontic literature and determine the frequency of reporting of confidence intervals (CIs) in orthodontic journals with an impact factor. The six latest issues of the American Journal of Orthodontics and Dentofacial Orthopedics, the European Journal of Orthodontics, and the Angle Orthodontist were hand...
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Randomization is a key step in reducing selection bias during the treatment allocation phase in randomized clinical trials. The process of randomization follows specific steps, which include generation of the randomization list, allocation concealment, and implementation of randomization. The phenomenon in the dental and orthodontic literature of c...
Article
The purpose of this study was to investigate the presence of publication bias (acceptance of articles indicating statistically significant results). The journals possessing the highest impact factor (2008 data) in each dental specialty were included in the study. The content of the 6 most recent issues of each journal was hand searched and research...
Article
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The purpose of this study was to explore the level of knowledge in biostatistics of orthodontic postgraduate students. A four-section questionnaire, which included a knowledge test/quiz on biostatistics and epidemiology, was developed. This questionnaire was distributed to postgraduate programme directors of European universities to be delivered to...
Article
To quantify the impact of edentulousness on residual ridge volume, denture stomatitis (DS), as well as oral health behaviours among geriatric denture-wearers. Residual ridge resorption (RRR) is the primary intraoral complication of complete edentulism, but individual variation among geriatric patients has been observed. Data collection relied upon...
Article
The purpose of the study was to evaluate and compare three scoring systems for dental erosion representing different approaches: the recently proposed Basic Erosive Wear Examination (B.E.W.E.), the Simplified Tooth Wear Index (S-T.W.I.), and the Evaluating Index of Dental Erosion (EV.I.D.E.), which are introduced and calibrated in the present study...
Article
The purpose of this study was to investigate the quality of reporting of randomised clinical trials (RCTs) published in dental specialty journals. The journals possessing the highest impact factor (2008 data) in the six major dental specialties were included in the study. The contents of the 24 most recent issues of each journal were hand-searched...
Article
This study provides data on the periodontal status of Greek adults aged 35-44-years-old in relation to socio-demographic and behavioural parameters and compares these data with those of 1985. A stratified cluster sample was selected according to WHO guidelines for national pathfinder surveys. Periodontal and oral hygiene status were assessed using...
Article
The aims of this prospective study were to examine the variation of dental students' perceived stressors throughout the course of their dental studies and to explore the role of gender on stress. A thirty-item modified version of the Dental Environment Stress Questionnaire (DES) was administered annually between 2003 and 2007 to a cohort of 109 Gre...
Article
Full-text available
To investigate the effects of levelling the curve of Spee (COS) on the inclination of the mandibular incisors and the width of the mandibular arch. Fifty patients, 10-18 years of age, were selected using the following inclusion criteria: nonextraction treatment in the mandibular arch; eruption of all mandibular teeth; no spaces in the mandibular ar...
Article
Tobacco use has been identified as a major risk factor for oral disorders such as cancer and periodontal disease. Tobacco use cessation (TUC) is associated with the potential for reversal of precancer, enhanced outcomes following periodontal treatment, and better periodontal status compared to patients who continue to smoke. Consequently, helping t...
Article
The use of tobacco continues to be a substantial risk factor in the development and progression of oral cancer, periodontitis, implant failure and poor wound healing. Dental and dental hygiene education providers have made great advances towards the incorporation of tobacco education into their curricula in recent years. Unfortunately, however, bot...
Article
Introduction Our aim was to compare the time required to complete the alignment of crowded maxillary anterior teeth (canine to canine) between Damon MX (Ormco, Glendora, Calif) and In-Ovation R (GAC, Central Islip, NY) self-ligating brackets. Methods Seventy patients from the first author's office were included in this randomized controlled trial...
Article
Our aim was to compare the time required to complete the alignment of crowded maxillary anterior teeth (canine to canine) between Damon MX (Ormco, Glendora, Calif) and In-Ovation R (GAC, Central Islip, NY) self-ligating brackets. Seventy patients from the first author's office were included in this randomized controlled trial by using the following...
Article
Aim: This study provides data on the periodontal status of Greek adults aged 35-44-years-old in relation to socio-demographic and behavioural parameters and compares these data with those of 1985. Material and methods: A stratified cluster sample was selected accord-ing to WHO guidelines for national pathfinder surveys. Periodontal and oral hygiene...
Article
Full-text available
The purpose of this study was to investigate the effect of treatment of mandibular crowding with self-ligating and conventional brackets on dental arch variables. Fifty-six patients were selected from a pool of subjects satisfying the following inclusion criteria: non-extraction treatment in the mandibular or maxillary arches, eruption of all mandi...
Article
Our objective was to assess the hypothesis that there are variations of the proportion of articles reporting a significant effect, with a higher percentage of those articles published in journals with impact factors. The contents of 5 orthodontic journals (American Journal of Orthodontics and Dentofacial Orthopedics, Angle Orthodontist, European Jo...
Article
The purpose of this study was to investigate the efficiency of copper-nickel-titanium (CuNiTi) vs nickel-titanium (NiTi) archwires in resolving crowding of the anterior mandibular dentition. Sixty patients were included in this single-center, single-operator, double-blind randomized trial. All patients were bonded with the In Ovation-R self-ligatin...
Article
INTRODUCTION: The purpose of this study was to investigate the efficiency of copper-nickel-titanium (CuNiTi) vs nickel-titanium (NiTi) archwires in resolving crowding of the anterior mandibular dentition. METHODS: Sixty patients were included in this single-center, single-operator, double-blind randomized trial. All patients were bonded with the In...
Article
The aim of this study was to identify dental students' self-reported sources of stress and to explore the role of specific curricular and institutional differences in the variation of perceived stressors among dental students in Greece, Ireland, Slovenia, Sweden, Spain, and Croatia. A thirty-item modified version of the Dental Environment Stress (D...