Age of patient at the extraction of the third molar

The purpose of this study was to assess the age of patients at the time of extraction of third molars. Our data included all routine and surgical extractions of third molars (n = 8199 teeth) performed by general and specialist dentists of the public oral health services of the city of Helsinki over the period 2013-2014. Measurements included patient's age, gender, the identified third molar, the type of anaesthesia, the method of extraction, and the diagnosis at extraction. Patients' ages ranged from 10 to 99 years. We found significant differences between younger and older age groups: third molar extractions occurred more often for women than for men below the age of 30 years (P <0.001) and vice versa for patients older than 30. Extractions were more prevalent for the upper jaw (P <0.001), and surgical extractions were more common than routine extractions (P <0.001) below the age of 40 years, but the corresponding prevalences reversed after the age of 40 years. Diagnoses at extraction differed between younger and older patients. We conclude that the treatment pattern of third molars at public health services varies greatly over a lifetime, and that a greater variety exists than had been reported previously from oral and maxillofacial units.Peer reviewe

Panorametry: suggestion of a method for mandibular measurements on panoramic radiographs

<p>Abstract</p> <p>Background</p> <p>Orthopantomography (panoramic radiography) has been used for the study of measurements involving particularly the prediction of the eruption of impacted lower third molars and analyses of measurements of the ramus and head of mandible. The discrepancies involved with the projection of this radiographic image has stimulated the search for further ways to use it, particularly in orthodontic treatments and oral and maxillofacial surgeries. The author proposes a graphimetric method for the mandible, based on panoramic radiography. The results are expressed in linear and angular measurements, aiming at bilateral comparisons as well as the determination of the proportion of skeletal and dental structures, individually and among themselves as a whole. The method has been named Panorametry, and allows measurement of the mandible (Mandibular Panorametry) or the posterior mandibular teeth (Dental Panorametry). When combining mandible and maxilla, it should be referred to as Total Panorametry. It may also be used, in the future, with Cone Beam computed tomography (CT) images, and in this case it may be mentioned as CT Panorametry.</p

How many third molars remain unnoticed in a population survey without panoramic radiographs?

Abstract Objective: The aim of the study was to compare the findings of clinical examination and panoramic radiograph regarding the occurrence of third molars in a population survey to find out how many third molars remain clinically unnoticed. Materials and methods: A two-staged stratified cluster-sampling method was used to select 8028 participants representing the adult population aged 30 years and older. Clinical oral examinations and panoramic radiographs were carried out for 5989 subjects (46% men, 54% women; mean age 52.5, SD 14.6; range 30–97 years). Clinical recordings of the presence of third molars were compared with the radiographs. Statistics included chi-squared, Fisher’s, Wilcoxon’s, and Kruskal-Wallis tests. Results: In the 5989 subjects, 3742 third molars were recorded in the clinical examination, and 5912 were observed in the panoramic images, a difference of 2170 teeth. Furthermore, related to 3668 (61%) of the third molars, both clinical and radiographic recordings were attributed to the same third molar, while 2244 third molars were observed only in the panoramic image, and 74 only in the clinical examination. In every age group, the mean number of third molars per subject was larger radiographically compared with the clinical recordings (means for all 0.99 vs. 0.62; P &lt; 0.001). Conclusion: Numbers of third molars, recorded in clinical examination alone, are underreported by approximately one-third compared with radiographic findings. Clinical relevance: The numbers of third molars in a population survey without a panoramic radiograph do not reflect the total number of third molars in a population

Retained dental roots of adults:a nationwide population study with panoramic radiographs

Abstract The aim of this study was to assess the occurrence and nature of retained dental roots and their associations with demographics in the Finnish adult population. From the cross-sectional nationwide Health 2000 Survey of the Finnish population aged 30 years and older, 6005 participants with clinical oral examination and panoramic radiographs were included. Occurrence and characteristics of all retained dental roots were examined. Statistical analyses included χ2, Kruskal–Wallis and Mann–Whitney U tests, and SAS-SUDAAN calculations. The mean age of the 6005 participants (46% men and 54% women) was 53 (SD 14.6) years. At least one retained dental root was observed in 13% (n = 754) of the participants. The 1350 retained roots included 461 (34%) roots retained entirely in bone and 889 (66%) partly in bone. The most common location of a retained dental root was the third molar region. Occurrence of retained roots partly in bone was associated with male sex and lower education. Occurrence of retained third molar roots entirely in bone was associated with female sex, younger age, higher education, and living in a city. Among all retained dental roots, the preponderance of third molars emphasized the demanding nature of extracting the third molar in women

Make4Change:empowering unemployed youth through digital fabrication

Abstract Recently, there has been a large body of research exploring the possibilities of digital fabrication and making in school context. To truly embrace the spirit of equity and democracy so essential to the maker movement, more research is needed concerning how these activities can be used to empower marginalized and at-risk groups. In this paper, we introduce preliminary insights from Make4Change project, that aims to strengthen the social inclusion and employability of unemployed, young people and immigrants outside the labor market through digital fabrication and making. We use the criteria for empowerment of participants as a tool to reflect the planning, organization, and execution of learning activities and on improving our process moving forward. We believe that insights from Make4Change will be useful to practitioners and researchers looking to empower underrepresented, marginal, or at-risk populations through making

A series of fortunate accidents:lessons learned when things go sideways in making projects with children

Abstract Maker culture celebrates mistakes as an essential part of the process — reflecting on our failures promotes learning and understanding of the processes we work with. As researchers and practitioners organizing digital fabrication and making activities with children, we all know even the best laid plans can fail, or at least there is a chance that things do not go as expected. However, when reporting our activities, we tend to focus on success stories. As success is often built on learning from our mistakes, it is important to embrace and reflect on them as a community. In this workshop we invite researchers and practitioners to discuss the fortunate accidents made when working with children in digital fabrication and making projects, and to compile a set of short papers including lessons learned that are geared towards the researcher or practitioner entering the FabLearn community