Assessment of bone density in edentulous maxillae using cone beam computed tomography (CBCT).

INTRODUCTION: In edentulous maxillae, the anterior maxilla is the region of interest for implant placement due to posterior bone resorption and sinus pneumatization. This study aimed to assess variations in bone density in different regions of the edentulous maxilla according to sex and age, using cone beam computed tomography (CBCT). MATERIALS AND METHODS: 69 CBCT from edentulous maxilla were analyzed. Six virtual implants were planned between the maxillary sinuses at incisor, canine, and premolar sites. Bone densities (in Hounsfield units HU) were recorded at six points on the neck, body, and apex of the buccal and lingual areas of each virtual implant. We used the two-sample t-test to compare male and female bone densities, and the Spearman correlation coefficient to analyze the correlation between mean bone density and age. One-way analysis of variance with post hoc pairwise t-tests was used to analyze the differences in density between three sites of the edentulous maxilla and the differences in density between three parts of the implant. The significance level was set at 5%. RESULTS: Mean bone density in males was significantly higher than in females. There was a significant correlation between mean bone density and age in females. Incisor sites showed the highest mean bone density, followed by canine and premolar sites. There was a significant decline in bone density from the neck to the apex. CONCLUSIONS: Bone density varied within and among edentulous maxillae. Bone density of the edentulous maxilla seemed to be influenced by age in women and by sex.

Lack of assent to dental examination in children with intellectual disabilities: Dentists' practices in Europe and ethical issues.

AIM: (1) To determine the repartition of criteria which can be considered as marks of lack of assent by the child with intellectual disabilities from the dentist's point of view and whether that influences the decision to examine the patient or not. (2) To explain the decision of practitioners and determine the ethical implications of these practices. METHODS: An anonymous and structured questionnaire was distributed online using the scenario of a 9-year-old child with moderate cognitive impairment with eight different oppositional behaviours. The practitioners were asked about their perception of the patient's lack of assent and about their decision to perform the dental examination or not. RESULTS: The proportion of them who performed a dental examination despite the patient's refusal represented between 13% and 28.8% of the population of respondents. CONCLUSION: There was an ambivalence among the practitioners who carried out a dental consultation when children were uncooperative. They adopted a teleological point of view. It calls for us to reflect on the ethical principles of autonomy and beneficence.

Age estimation from alveolar bone loss, re-evaluation of Ruquet's method.

There are many dental age estimation methods, but all the methods do not correspond, especially for aging methods for adults and mature individuals, to the reality of the forensic field, which favors simple, effective, and easy-to-use methods. Ruquet (2015) developed a method based on alveolar bone loss that predicts age for individuals between 25 and 60 years old and is even more accurate for those 25-40 years old. This study re-evaluated Ruquet's alveolar bone loss method using three-dimensional imaging of individuals whose age and sex were known, without taking into account their medical conditions. Digital measurements, from the cemento-enamel junction (CEJ) to the alveolar bone crest (ABC), were performed on the mesial and distal surfaces of teeth on 243 patients, independent of the tridimensional imaging test. With these measurements, two alveolar bone loss averages (ABL) were calculated, one with all the teeth present on the arches and another with only Ramfjörd's teeth. Bone loss showed a significant correlation with age (p < 0.001). The age estimation with all teeth and with only Ramfjörd's teeth showed a statistically significant difference, and age estimation was more accurate when all teeth were used. The assessment of alveolar resorption appears to be an interesting tool for age estimation in adult individuals. However, the method still lacks precision, and the mean absolute errors (MAEs) obtained by age group were all greater than 5 years, except for the age group 35-39 years old, for the age estimation with all teeth. Further studies should explore this existing correlation between alveolar bone loss and age and refine this method to make it more accurate.

Ethical issues encountered by French intensive care unit caregivers during the first COVID-19 outbreak.

PURPOSE: We aimed to describe the ethical issues encountered by health care workers during the first COVID-19 outbreak in French intensive care units (ICUs), and the factors associated with their emergence. METHODS: This descriptive multicentre survey study was conducted by distributing a questionnaire to 26 French ICUs, from 1 June to 1 October 2020. Physicians, residents, nurses, and orderlies who worked in an ICU during the first COVID-19 outbreak were included. Multiple logistic regression models were performed to identify the factors associated with ethical issues. RESULTS: Among the 4,670 questionnaires sent out, 1,188 responses were received, giving a participation rate of 25.4%. Overall, 953 participants (80.2%) reported experiencing issue(s) while caring for patients during the first COVID-19 outbreak. The most common issues encountered concerned the restriction of family visits in the ICU (91.7%) and the risk of contamination for health care workers (72.3%). Nurses and orderlies faced this latter issue more than physicians (adjusted odds ratio [ORa], 2.98; 95% confidence interval [CI], 1.87 to 4.76; P < 0.001 and ORa, 4.35; 95% CI, 2.08 to 9.12; P < 0.001, respectively). They also faced more the issue "act contrary to the patient's advance directives" (ORa, 4.59; 95% CI, 1.74 to 12.08; P < 0.01 and ORa, 10.65; 95% CI, 3.71 to 30.60; P < 0.001, respectively). A total of 1,132 (86.9%) respondents thought that ethics training should be better integrated into the initial training of health care workers. CONCLUSION: Eight out of ten responding French ICU health care workers experienced ethical issues during the first COVID-19 outbreak. Identifying these issues is a first step towards anticipating and managing such issues, particularly in the context of potential future health crises.

RéSUMé: OBJECTIF: Notre objectif était de décrire les enjeux éthiques rencontrés par les personnels de santé lors de la première éclosion de COVID-19 dans les unités de soins intensifs (USI) françaises, ainsi que les facteurs associés à leur apparition. MéTHODE: Cette enquête multicentrique descriptive a été réalisée en distribuant un questionnaire à 26 unités de soins intensifs françaises, du 1er juin au 1er octobre 2020. Les médecins, les internes, le personnel infirmier et les aides-soignant·es qui travaillaient dans une unité de soins intensifs pendant la première éclosion de COVID-19 ont été inclus·es. Des modèles de régression logistique multiple ont été réalisés pour identifier les facteurs associés aux questions éthiques. RéSULTATS: Parmi les 4670 questionnaires envoyés, 1188 réponses ont été reçues, soit un taux de participation de 25,4 %. Dans l'ensemble, 953 personnes participantes (80,2 %) ont déclaré avoir éprouvé un ou des problèmes alors qu'elles s'occupaient de patient·es lors de la première éclosion de COVID-19. Les problèmatiques les plus fréquemment rencontrées concernaient la restriction des visites des familles dans les USI (91,7 %) et le risque de contamination pour les personnels de la santé (72,3 %). Le personnel infirmier et les aides-soignant·es étaient davantage confronté·es à ce dernier problème que les médecins (rapport de cotes ajusté [RCa], 2,98; intervalle de confiance [IC] à 95 %, 1,87 à 4,76; P < 0,001 et RCa, 4.35; IC 95 %, 2,08 à 9,12; P < 0,001, respectivement), tout comme ils étaient davantage confrontées à la question d'« agir contrairement aux directives médicales anticipées du/de la patient·e ¼ (RCa, 4,59; IC 95 %, 1,74 à 12,08; P < 0,01 et RCa, 10,65; IC 95 %, 3,71 à 30,60; P < 0,001, respectivement). Au total, 1132 répondant·es (86,9 %) estimaient que la formation en éthique devrait être mieux intégrée à la formation initiale des personnels de santé. CONCLUSION: Huit travailleuses et travailleurs de santé français·es des soins intensifs sur dix ont été confronté·es à des problèmes éthiques lors de la première éclosion de COVID-19. L'identification de ces enjeux est une première étape vers leur anticipation et leur gestion, en particulier dans le contexte d'éventuelles crises sanitaires futures.

Discrimination between falls and blows from the localization and the number of fractures on computed tomography scans of the skull and the trunk.

The distinction between falls and blows is a common and difficult task in forensic sciences. One of the most often used criteria to address this issue is the hat brim line (HBL) rule, which states that fall-related injuries do not lie above the HBL. Some studies, however, have found that the use of HBL rule is not so relevant. This study assesses the aetiologies, the number of fractures, and their location on the skull and the trunk in a sample of 400 individuals aged 20-49 years, which were CT scanned after traumas. This may facilitate the interpretation of such injuries in skeletonized or heavily decomposed bodies in which soft tissues are no longer available. Our aim is to improve the distinction rate between falls and blows by combining several criteria and assessing their predictability. Skeletal lesions were analysed using retrospective CT scans. Cases selected comprise 235 falls and 165 blows. We registered the presence and the number of fractures in 14 skeletal anatomical regions related to the two different aetiologies. We showed that the HBL rule should be used with caution, but there is nevertheless a possibility of discussing the aetiology of blunt fractures. Possibly, parameters like the anatomical location and the number of fractures by region can be used to distinguish falls and blows.

Early childhood caries: Detection, prevention, and referral. A questionnaire study of general medical practitioners and pediatricians in the south of France.

INTRODUCTION: Early childhood caries (ECC) is an illness defined as the presence of one or more decayed, missing after caries, or filled tooth surfaces in any primary tooth in a child under the age of 6 years. It has a negative impact on the physical and the psychological development of children. General medical practitioners (GPs) and pediatricians, the first professionals involved in the follow-up of young children, are on the frontline of detecting and referring patients with caries or individual high-risk of carious lesions. The aims of this study were (1) to assess the current state of knowledge of pediatricians and GPs in the south of France regarding ECC detection and prevention, and (2) to understand whether there are difficulties in referring young patients for the early detection of carious lesions. METHODS: A semi-structured questionnaire was circulated to GPs and pediatricians working in the Provence-Alpes-Côte d'Azur region (France). The questionnaire was divided into three parts related to the characteristics of the participants, to the current skill and knowledge of practitioners in detecting ECC (using clinical vignettes) and advising preventive measures, and to the dental examination and any difficulties in referring patients. RESULTS: There were 97 participants in the study. Many oral hygiene measures were known but only just over half of the dietary risk factors were recognized. Participants seemed to be involved in detecting ECC, the majority very often examined teeth during their consultations. Practitioners recognized a carious lesion in only one of two cases. The lack of knowledge of the recommended age for the first consultation could be a barrier in referring patients to a dentist, for which pain remains the main reason for referral. CONCLUSION: GPs and pediatricians should play a key role in the detection and prevention of ECC. Participants showed great interest in the topic of oral health. For better management, it would be beneficial to provide training resources with quick and efficient access to information.

Surnames in south-eastern France: structure of the rural population during the 19th century through isonymy.

An analysis of the distribution of surnames through time and space allows us to understand the structure of human groups, their exchanges or even their possible isolation. The French population has already been studied through surnames and it has been shown that the Sud-Provence-Alpes-Côte d'Azur region differed from the rest of France in both the 20th and 21st centuries (Mourrieras et al., ; Scapoli et al., ). The objective of this study was to understand the population evolution and particularities of the Sud-Provence-Alpes-Côte d'Azur region through an analysis of the distribution of surnames over an earlier period: the 19th century. For this work, 806,069 birth records from 521 communes between 1810 and 1890 were recorded and a total of 23,340 surnames were collected. The estimation of various isonymic parameters has allowed a description of this corpus never exploited before. In order to appreciate the population evolution, the data set was divided into three periods of 25 years. The canton was the geographical unit of this study, and similarities and differences between each of them were evaluated using Lasker distances, which allow the construction of dendrograms. A positive and significant correlation (p<0.0001) was found between Lasker distances and geographical distances using the Mantel test. The lowest inbreeding estimates were found in the Durance Valley. Migration, estimated from the v-index of Karlin and McGregor (), showed higher values in the south-western quarter of the region. The decrease in Rst values across the three periods is consistent with a homogenization of the patronymic between the cantons. This three-period approach showed a population evolution influenced by linguistic, cultural, historical and migratory phenomena since the Middle Ages, disrupted by the socioeconomic changes of the 19th century.

Post-traumatic growth 5 years after cancer: identification of associated actionable factors.

BACKGROUND: The number of cancer survivors is growing increasingly worldwide. The long-term negative consequences of the disease are now better known. Cancer may also foster positive outcomes. Some survivors consider life after cancer as the start of a new life and experience positive changes called post-traumatic growth (PTG) measured by a scale developed by Tedeschi and Calhoun. OBJECTIVE: The purpose of this article was to explore actionable factors affecting PTG, particularly those in relation with health care management and those that reflected health behavior changes. METHODS: This study included the 1,982 participants in the VICAN cohort who responded to the questionnaire on living conditions 2 and 5 years after diagnosis. Factors associated with a moderate or high PTG (score ≥ 63) were identified using logistic regressions. RESULTS: Factors positively associated with moderate or high PTG were being satisfied with the time spent by health care team on information (OR:1.35 [1.08;1.70]), increased physical activity (OR:1.42 [1.04;1.95]) and healthier diet (OR:1.85 [1.44;2.36]) since diagnosis, and having benefited from psychological support at diagnosis (OR:1.53 [1.16;2.01]). CONCLUSION: High PTG is positively associated with health behavior and time spent on information. Our findings suggest that appropriate clinical and educational interventions can help foster growth after the experience of cancer. Even if we do not know what causes what, it is admitted that the interventions leading to an increase of physical activity, for example, are good from all points of view.

Quality of life of patients irradiated for head and neck cancer and impact of rehabilitation with a removable dental prosthetic: 1-year follow-up study.

Background: Head and neck cancer and its treatment cause significant functional, aesthetic, and social disabilities. These disabilities have a major impact on the quality of life of patients. When irradiation is required, removable dental prostheses are often the treatment of choice. This study investigated whether removable prosthetic rehabilitation improved patient function and aesthetics over the long term. Material and Methods: In this prospective study, we assessed quality of life in 78 patients with the General Oral Health Assessment Index (GOHAI) questionnaire. Assessments were performed before, and 1 week, 3 months, 6 months, and 12 months after denture insertion. We evaluated whether quality of life was influenced by the type of removable prosthesis and the primary tumour location. Results: We constructed mixed-effects linear regression models to identify correlates of the overall GOHAI score (GOAHI-add score) and the three domain-scores (functional, psychosocial, and discomfort/pain) in a longitudinal analysis over a 12-month follow-up. We compared scores (GOHAI-add score and domain-scores) in multivariate analyses between baseline (T0) and four post-insertion timepoints to determine significant changes. Conclusions: We found that removable prosthetic rehabilitation had an influence on the evolution of quality of life. The psychosocial component scores increased steadily over the year and changed more significantly than the functional and discomfort-pain components. The mandibular location of the primary lesion had a negative influence on quality of life. The type of removable prosthesis did not influence the results. Key words:Quality of life, head and neck cancer, GOHAI, dental prosthesis, radiotherapy.

Functional status in older patients with cancer.

BACKGROUND: Functional Status (FS) is an important domain in Comprehensive Geriatric Assessment (CGA) and is most often evaluated using the Activities of Daily Living (ADL) and Instrumental Activities of Daily Living (IADL) scales separately. METHOD AND OBJECTIVES: This secondary analysis of a previous prospective cohort study was conducted between September 2015 and May 2018 at Marseille University Hospital, France, on 613 cancer outpatients aged ≥70 years. The first objective of this study was to determine the prevalence of FS impairment in older outpatients with cancer using a combination of the information collected with the ADL and short IADL scales. Our second objective was to describe the potential impact of this combined FS on three-month unplanned hospitalizations and three-month mortality in this population. RESULTS: The median age was 81 years and 61.2% were men. The most common types of tumours were lung and thoracic (22.3%). Concerning FS, 255 patients (41.6%) had unimpaired ADL-IADL, 131 patients (21.4%) had IADL impairment, 38 patients (6.2%) had ADL impairment, and 189 patients (30.8%) had impaired ADL-IADL. In the multivariate Cox analysis, metastatic stage (adjusted Hazard Ratio (aHR) = 1.79; 95% CI [1.14-2.80]) and impaired ADL-IADL (aHR = 3.46; 95% CI [1.89-6.33]) were independently associated with three-month mortality. In the logistic regression model, impaired ADL-IADL (adjusted Odd ratio (aOR) = 3.64; 95% CI [1.84-7.20]) was the only factor independently associated with three-month unplanned hospitalizations. INTERPRETATION: The combined use of the ADL and IADL scales to evaluate functional status in older patients with cancer is of significant prognostic value regarding the risks of three-month unplanned hospitalizations and mortality.

Quality of life in irradiated patients with head and neck cancer: A preliminary study about the impact of prosthetic rehabilitation.

BACKGROUND: Oral quality of life is of great importance in head and neck cancer, where each patient combines functional, social and esthetic needs. Our study aimed to evaluate the influence of prosthetic and/or maxillofacial rehabilitation on patients' perceived oral quality of life. MATERIAL AND METHODS: The General Oral Health Assessment Index (GOHAI) was used in 28 patients with head and neck cancer who had undergone radiotherapy, recruited at La Timone University Hospital, Marseille, France, and who required prosthetic rehabilitation. The questionnaire was completed at three timepoints in the study: before insertion of the prosthesis (T0), then one week (T1) and three months after insertion (T2). RESULTS: The percentage of patients with poor quality of oral health decreased from 96.4% to 64.3% between T0 and T1. Between T0 and T1, the mean score of the psychosocial component of the GOHAI increased from 14.28 ± 4.51 to 20.14 ± 5.20 and the mean functional component score increased from 9.32 ± 3.86 to 12.07 ± 4.04. CONCLUSIONS: Prosthetic rehabilitation appeared to have a positive impact on oral quality of life in our study subjects, particularly on social relations and self-esteem. Its influence on pain and discomfort remains to be clarified. This preliminary study gives a prospective view of the impact of prosthetic rehabilitation in patients with head and neck cancer who had undergone radiotherapy. Analysis of data yielded by cross-referencing of different questionnaires should make it possible to refine these results. Key words:GOHAI, quality of life, head and neck cancer, prosthetic rehabilitation.

Age estimation from the biometric information of hand bones: Development of new formulas.

INTRODUCTION: In the judicial context of the age estimation of living individuals, a new method was recently proposed, based on the collection of biometric information on hand bones radiographs. The aim of this study was to apply this method to a large French sample to provide new tools for age estimation MATERIALS AND METHODS: The study sample consisted of metacarpals and proximal phalanges measurements of 1003 individuals aged less than 21 years. This sample was divided into two subgroups 1-12 and 13-21 years as the age of 13 is a relevant legal threshold for most European countries. A quadratic discriminant analysis was performed to identify the group to which an individual was most likely to belong. Age estimation formulas were also constructed from linear models: for each subgroup and the total sample. RESULTS: The belonging of an individual to the 1-12 or 13-21 subgroup was determined with a correct classification rate of 89.8%. Age estimation formulas became less precise with age, with a mean absolute error ranging between 11 and 21 months. CONCLUSION: We proposed a two-step procedure for age estimation: firstly, the identification of the age group to which the individual is most likely to belong, and secondly, the age estimation of this individual by applying the appropriate formula.

Cone beam computed tomography analysis of the edentulous mandibular symphysis.

BACKGROUND/PURPOSE: Overdenture with single symphyseal implant is one of the useful clinical approach for elderly edentulous patients. We aimed to evaluate edentulous patients with regards to the relationship between dimensions, bone characteristics, cancellous densities, and cortical thickness of the mandibular symphyseal region using cone beam computed tomography (CBCT). MATERIAL AND METHODS: We analyzed 103 CBCT from pre-implant investigations. All included patients were healthy without any disorders affecting bone metabolism. We performed 13 measurements for each patient: 9 of height, width, and thickness (mm) and 4 of density (Hounsfield Units; HU). Fisher's exact test was applied to examine the association between two categorical variables, the Pearson correlation coefficient to measure the strength of linear relationship between two quantitative variables. We used the two-sample Student's t-test to compare mean symphysis height between men and women, the paired Student's t-test to compare mean lingual and buccal cortical thickness. For all tests, the threshold of significance was fixed at 5%. RESULTS: Men and women significantly differed with regards to mean total symphysis height (p = 0.004) and the distribution of Cawood and Howell classifications (p = 0.033). Symphysis height was negatively correlated with mean density of cancellous bone (r = -0.453, p < 0.001). Mean lingual cortical thickness significantly differed from mean vestibular thickness (p < 0.001, paired Student's t-test). CONCLUSION: Present findings supported that symphyseal measurements are parameters that reflect the symphysis bone characteristics, and can guide the choice of a suitable implant design.

Inequalities in treatment planning for children with intellectual disabilities: A questionnaire study of dentists in Europe.

BACKGROUND: Children with intellectual disabilities experience major inequality in the field of oral health, including a higher number of extracted teeth. The literature explains this difference in terms of higher levels of dental disease but does not mention the possibility of inequality in the treatment options offered these children. AIM: The aim is to investigate whether the same treatment options are offered by practitioners to children with and without intellectual disability in equivalent clinical circumstances. DESIGN: A scenario involving a clinical dental situation was developed, with one varying parameter: the patient described was a child with or without cerebral palsy. RESULTS: One hundred and thirty-nine dental specialists from France and Europe were recruited. A large number of practitioners (68%) chose the same treatment for both patients, but 32% declared modifying the dental treatment planning in the case of the child with cerebral palsy. The most frequently chosen treatment for the scenario of irreversible pulpitis for the child without disability was conservative endodontic treatment (73%) whereas the most frequently chosen treatment for the child with intellectual disability was tooth extraction (54%). DISCUSSION: These results are discussed in terms of beneficence, fear of restorative failure, lack of guidelines, practitioner experience and the implications for equity in healthcare.

A cross-sectional analysis of patient care pathways and profiles in a dental emergency department.

INTRODUCTION: Hospital dental emergency (DE) departments are assumed to improve access to emergency care. Patients use these facilities at night and during weekends, mainly because private care is not available at these times. However, motivation for using hospital care during office hours remain unclear. This study aimed to investigate the characteristics and care pathways of patients consulting a DE department during office hours and to identify the profiles of DE department users. METHODS: A descriptive cross-sectional study was performed in the DE department of La Timone Hospital (Marseille, France). Structured interviews were conducted with 150 patients. The interview guide explored sociodemographic data, dental care behaviour, characteristics of the emergency visit, care pathway and follow-up. Descriptive statistics and a multiple correspondence analysis were used for statistical analysis of the data collected. RESULTS: The main motivation for seeking care was pain (76%), and 59.3% of the patients attended the DE department as a first intention. The main reasons for coming to the hospital were trust in hospital practitioners (42%) and convenience of care accessibility (40.1%). Two contrasting profiles of patients were identified: young patients with a low income (regular users of DE departments, seeking acute pain relief); and elderly patients (infrequent users of DE departments, seeking follow-up care). CONCLUSION: This study highlighted that hospitals can be a primary pathway to DE care even though private care may be available. However, serious limitations regarding the continuity of care in the hospital exist, regardless of patient profile.

Objective and perceived oral health status of elderly nursing home residents: a local survey in southern France.

OBJECTIVE: The aim of this study was to compare the perceived oral health of elderly persons and the clinical reality of their oral status. BACKGROUND: Persons aged over 60 have considerable need for oral health care; a need that increases over time. However, this population appears to be unaware of their state of oral health, and this may be a further obstacle to professional management. We thought it useful to examine the objective and the perceived oral health of these patients. Understanding what may influence their perception can help us to improve their management. METHODS: The data analyzed in this work are the findings of a field survey carried out in elderly nursing home residents. Their objective oral health was evaluated by using two variables: oral profile, determined by clinical examination, and the oral health index determined using the Oral Health Assessment Tool (OHAT). Perceived oral health was evaluated using the various categories and fields of the General Oral Health Assessment Index (GOHAI). RESULTS: Our clinical study showed a discrepancy between perceived oral health and the clinical reality: although a significant association can be demonstrated between the OHAT and the GOHAI, there are considerable variations. It also appeared that the number of teeth and total edentation considerably influence perceived oral health and that findings vary according to different situations. CONCLUSION: Numerous factors influence elderly persons' perception of their true oral health. In order to improve our elders' quality of life, the necessary measures must be taken for the follow-up and regular monitoring of their oral health. At the same time, all possible means should be used and awareness should be raised to improve the health behavior and perception of patients and their entourage.

Dental students' attitudes towards management of pain and anxiety during a dental emergency: educational issues.

INTRODUCTION: High levels of patients' pain and anxiety characterise dental emergencies. The main objective of this study was to examine the self-reported attitudes of dental students towards these parameters in emergency conditions. A secondary objective was to determine if individual parameters (gender, personal experience of dental pain, personal dental anxiety and year of study) might affect their attitudes. METHODS: One-hundred and eighty-seven undergraduate dental students with clinical practice completed a multiple-choice self-administered questionnaire online. The aforesaid individual parameters were collected and the students were asked to rate the frequency of their behaviour towards items representing good management of patients' pain and anxiety. The chi-square test of independence, Fisher's exact test and multiple logistic regression models were used for statistical analysis. RESULTS: Oral assessment of anxiety before treatment was scarce and was significantly associated with the students having personally experienced dental pain (P = 0.007). Pre-, intra- and postoperative pain appeared to be managed unequally by the students. Male students were significantly less likely to inform patients about postoperative pain (P = 0.014). More clinical experience was associated with less systematic consideration for intra-operative pain (P < 0.05). Being dentally anxious showed no significant association with higher frequencies of behaviours towards patients' pain and anxiety. CONCLUSIONS: These findings highlight the need for educational improvement regarding pain and anxiety in emergency conditions, especially concerning the assessment methods and continuity in the control of pain. Emergency dental care appears to be a very suitable field for contextual learning.

Use of care and the oral health status of people aged 60 years and older in France: results from the National Health and Disability Survey.

OBJECTIVE: We aimed to analyze, from the data in a national survey, the use of oral care and the oral health status of patients living at home or in an institution. BACKGROUND: Patients aged 60 years and older have important oral health needs, but their oral management may differ according to their immediate environment. The fact of living at home or in an institution can influence the use of care and alter the patients' perception of their oral health status. METHODS: The data analyzed were taken from a survey on disability and health carried out in 2008-2009, which is representative of the population living in France. It consists of two sections, one centered on disability and health among home-dwellers and the other on patients living in an institution. In each of these two populations, we carried out descriptive analysis of three themes: use of care, forgoing of care, and oral health. RESULTS: Although visits to physicians and specialists were frequent, visits to dentists were lower in both populations. While a minority of patients forwent care, it was dental care that was mainly forgone by both home-dwellers and institutionalized patients. The cost factor remained the principal reason, but other factors such as fear or accessibility problems were cited. Use of a dental appliance was considerably more frequent among institutionalized patients than among home-dwellers, with just over half the institutionalized population wearing a dental appliance. Perceived state of oral health remained difficult to interpret. CONCLUSION: To improve access to oral care for the elderly, the patients, their entourage and health providers need increased awareness and information on the importance of good oral health. Better information must be associated with regular clinical examination.

Estimation of Age Using Alveolar Bone Loss: Forensic and Anthropological Applications.

The objective of this study was to utilize a new odontological methodological approach based on radiographic for age estimation. The study was comprised of 397 participants aged between 9 and 87 years. A clinical examination and a radiographic assessment of alveolar bone loss were performed. Direct measures of alveolar bone level were recorded using CT scans. A medical examination report was attached to the investigation file. Because of the link between alveolar bone loss and age, a model was proposed to enable simple, reliable, and quick age estimation. This work added new arguments for age estimation. This study aimed to develop a simple, standardized, and reproducible technique for age estimation of adults of actual populations in forensic medicine and ancient populations in funeral anthropology.

Admixture Indicative Interval (AII): a new approach to assess trends in genetic admixture.

The genetic admixture is a dynamic and diachronic process, taking place during a great number of generations. Consequently, a sole admixture rate does not represent such an event and several estimates could help to take into account its dynamics. We developed an Admixture Indicative Interval (AII) which gives a mathematical key to avoid this problem by integrating several admixture estimators and their respective accuracy into a single metric and provides a trend in genetic admixture. To illustrate AIIs interests in admixture studies, AII were calculated using seven estimators on two sets of simulated SNPs data generated under two different admixture scenarios and were then calculated from several published admixed population data: a Comorian population and several Puerto-Rican and Colombian populations for recent admixture events as well as European populations representing the Neolithic/Paleolithic admixture for an older event. Our method provides intervals taking properly the variability and accuracy of admixture estimates into account. The AII lays in the intuitive interval in all actual and simulated datasets and is not biased by divergent points by the mean of a double-weighting step. The great quantity of heterogeneous parental contributions is synthesized by a few AII, which turn out to be more manageable and meaningful than aplenty variable point estimates. This offers an improvement in admixture study, allowing a better understanding of migratory flows. Furthermore, it offers a better assessment of admixture than the arithmetic mean, and enhances comparisons between regions, samples, and between studies on same population.