Occlusal features of 5-year-old Greek children: a cross-sectional national study.

Background: Occlusal characteristics of the primary dentition are crucial in predicting and determining permanent tooth alignment and occlusion. The aim of our study was to determine the occlusal characteristics of the primary dentition of 5-year-old children in Greece through a national pathfinder survey.

Methods: A stratified cluster sample of 1222 5-year-old children was selected according to the WHO guidelines for national pathfinder surveys.

Dental Caries Prevalence and Experience (ICDAS II Criteria) of 5-, 12- and 15-Year-Old Children and Adolescents with an Immigrant Background in Greece, Compared with the Host Population: A Cross-Sectional Study.

Evidence regarding disparities in oral health among native and immigrant child and adolescent populations in Europe is scarce. The present study aimed to determine the caries status of 5-, 12-, and 15-year-olds with an immigrant background in Greece in relation to their sociodemographic characteristics and compare their caries levels with those of their native Greek peers. A sample of 707 immigrants underwent clinical examination for caries (ICDAS II criteria), followed by a calculation of caries prevalence and experience estimates (2013-2014).

Orthodontic Status and Orthodontic Treatment Need of 12- and 15-Year-Old Greek Adolescents: A National Pathfinder Survey.

The purpose of this research was to assess the orthodontic status and orthodontic treatment needs of 12- and 15-year-old schoolchildren in Greece, in relation to sociodemographic factors and parental education level. A total of 1102 12-year-old children and 1131 15-year-old adolescents across Greece were assessed using the Modified Dental Health component (DHC) of the Index of Orthodontic Treatment Need (IOTN). An amount of 38.

Caries prevalence and caries experience (ICDAS II criteria) of 5-, 12- and 15-year-old Greek children in relation to socio-demographic risk indicators. Trends at the national level in a period of a decade.

Purpose: To study the caries status of 5, 12 and 15-year-old Greek children, assess how disease parameters are related to socio-demographic indicators and identify relevant trends at the national level.

Methods: A stratified cluster sample of 3702 children in total was randomly selected and examined clinically for caries (ICDAS II criteria). Caries experience was outlined by adapting ICDAS criteria to the d/D component of the WHO dmf/DMF index configuration.

Volume fraction and location of voids and gaps in ultraconservative restorations by X-ray computed micro-tomography.

Background: Volume fraction (Vf) and location of internal voids and gaps in relation to material type and cavity dimensions in ultraconservative restorations were investigated in this study.

Materials And Methods: Forty-eight round cavities of 1.3 mm mean diameter and 2.

Oral Hygiene Facilitators and Barriers in Greek 10 Years Old Schoolchildren.

Aim: The aim of this study was to determine the oral hygiene facilitators and barriers for 10 years old Greek children, via a questionnaire and clinical examination.

Materials And Methods: This was a cross-sectional study of 266, 10 years old, children recruited from schools in 3 locations in Greece. Data were collected via questionnaires and clinical examination.

A computer-aided automated methodology for the detection and classification of occlusal caries from photographic color images.

The aim of this work is to present a computer-aided automated methodology for the assessment of carious lesions, according to the International Caries Detection and Assessment System (ICDAS II), which are located on the occlusal surfaces of posterior permanent teeth from photographic color tooth images. The proposed methodology consists of two stages: (a) the detection of regions of interest and (b) the classification of the detected regions according to ICDAS ΙΙ. In the first stage, pre-processing, segmentation and post-processing mechanisms were employed.

Comparative clinical study testing the effectiveness of school based oral health education using experiential learning or traditional lecturing in 10 year-old children.

Background: School based oral health education through traditional lecturing has been found successful only in improving oral health knowledge, while has low effectiveness in oral hygiene and gingival health. The aim of this study was to evaluate the effectiveness of experiential learning (EL) oral health education to traditional lecturing (TL), on enhancing oral health knowledge, attitude and behavior as well as oral hygiene, gingival health and caries of 10-year-old children.

Methods: Eighty-four children were recruited for the EL and 100 for the TL group from 3 locations in Greece.

Occlusal caries detection using random walker algorithm: a graph approach.

The aim of this work is to present a modification of the Random Walker algorithm for the segmentation of occlusal caries from photographic color images. The modification improves the detection and time execution performance of the classical Random Walker algorithm and also deals with the limitations and difficulties that the specific type of images impose to the algorithm. The proposed modification consists of eight steps: 1) definition of the seed points, 2) conversion of the image to gray scale, 3) application of watershed transformation, 4) computation of the centroid of each region, 5) construction of the graph, 6) application of the Random Walker algorithm, 7) smoothing and extraction of the perimeter of the regions of interest and 8) overlay of the results.

School-based oral health-education program using experiential learning or traditional lecturing in adolescents: a clinical trial.

The aim of this project was to compare the effectiveness of experiential learning (EL) and traditional lecturing (TL) school-based oral health education on the oral health knowledge, attitude, habits, oral hygiene, gingival health and caries incidence of 13-year-old Greek children. Eighty-seven children for the EL group and 80 for the TL group were selected from two areas of Greece. Information on oral health knowledge, attitude and behaviours were obtained using a questionnaire.

Risk indicators of coronal and root caries in Greek middle aged adults and senior citizens.

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 65-74-year-old in relation to socio-demographic parameters.

Tooth loss and oral rehabilitation in Greek middle-aged adults and senior citizens.

Purpose: 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.

Materials And Methods: A stratified cluster sample of 1,188 middle-aged adults and 1,093 senior citizens was selected according to World Health Organization (WHO) guidelines for national pathfinder surveys. Tooth loss and prosthetic status and needs were recorded according to WHO criteria.

Validation of a Greek version of the oral health impact profile (OHIP-14) for use among adults.

Background: To test the validity of the short form of the Oral Health Impact Profile (OHIP-14) for use among adults in Greece.

Methods: The original English version of the OHIP-14 was translated using the forward-backward technique, pilot-tested, and then applied to 211 adults aged 35 years and above. The questionnaire was filled out during face-to-face interviews conducted by one dentist, while individuals were asked to undergo a clinical examination.

Oral health-related quality of life of greek adults: a cross-sectional study.

Purpose. The aim of the present study was to investigate the impact of oral health status on the quality of life of adults in different regions of Greece, using the Oral Health Impact Profile-short form (OHIP-14). Methods.

Prevalence of sealants in relation to dental caries on the permanent molars of 12 and 15-year-old Greek adolescents. A national pathfinder survey.

Background: The use of sealants as an effective measure for the prevention of pit and fissure caries in children has been well documented by several studies; either they are used on an individual or on a public health basis. In order to plan and establish a national preventive program with sealants in a community, it is mandatory to know the epidemiological pattern of caries along with other variables influencing their use and effectiveness.

Aims: To assess the utilization and distribution pattern of pit and fissure sealants on the first and second permanent molars of Greek adolescents and to evaluate whether the existing usage of sealants and some socio-demographic factors are correlated to caries prevalence on the population examined

Methods: A stratified cluster sample of 2481 Greek adolescents was selected according to WHO guidelines (1224 twelve and 1,257 fifteen-year-old), living in urban and rural areas in 11 districts within the country.

Periodontal diseases in Greek adults between 1985 and 2005--risk indicators.

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 according to WHO guidelines for national pathfinder surveys. Periodontal and oral hygiene status were assessed using the CPI index and the OHI-S index respectively.

Periodontal and microbiological parameters in children and adolescents with cleft lip and /or palate.

Objective. To evaluate the oral hygiene and the periodontal condition of children and adolescents with cleft lip and/or palate (CLP). Methods.

Comparison of the effectiveness of fissure sealants in Finland, Sweden, and Greece.

Objective: To evaluate the effectiveness of sealant treatment in preventing dental restorations due to caries in a practice-based research network in Finland, Sweden, and Greece.

Material And Methods: Times of tooth emergence, sealing treatment, and dental caries were compiled from the dental charts of 4735 subjects born in 1970-72 in Finland and in 1980-82 in Finland, Sweden, and Greece. Survival time between tooth emergence and placement of first restoration was measured and estimated using survival analysis methodology.