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- Crona-Larsson, G, et al.
(author)
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Effect of luxation injuries on permanent teeth.
- 1991
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In: Endodontics & dental traumatology. - 0109-2502. ; 7:5, s. 199-206
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Journal article (peer-reviewed)abstract
- Trauma to the supporting tissues of the teeth are among the most common dental injuries, leading to such complications as pulp canal obliteration, necrosis and root resorption. The aim of this investigation was to study the outcome for young permanent teeth subjected to luxation injuries. From 108 dental records 171 teeth with injuries to the supporting tissue were selected. The material comprised 130 subluxated, 15 extruded, 9 intruded, 15 exarticulated and 6 laterally luxated teeth in children aged 6-19 years. Apart from luxation, 59 teeth (35%) had additional crown and root fractures. 65% of the teeth recovered without complications. 78% of the subluxated teeth and 24% of the luxated teeth showed uneventful posttraumatic healing. Concomitant uncomplicated crown fractures or root fractures without displacement of the coronal fragment did not interfere with the healing. Of 60 teeth with healing complications, 52 (87%) were subsequently recorded as healed, the remaining 8 were extracted or had progressive root resorption. Loss of pulp vitality and external root resorptions were the most often recorded complications (28% and 17% of the total material respectively). Pulp canal obliteration was noted in 3% of the cases. Extent of injury and degree of tooth maturity were found to be related to healing complications.
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- Crona-Larsson, G, et al.
(author)
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Luxation injuries to permanent teeth -- a retrospective study of etiological factors.
- 1989
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In: Endodontics & dental traumatology. - 0109-2502. ; 5:4, s. 176-9
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Journal article (peer-reviewed)abstract
- Trauma to permanent teeth with luxation injuries often leads to clinical treatment problems. Traumatic injury patients in local clinics are often limited in number. The aim of this investigation was to retrospectively study the etiological factors in luxation injuries to permanent teeth in relation to sex, age, time of year and diagnosis. A total of 108 files from patients, aged 6 to 19 years, with 196 teeth with luxation injuries, were collected. The maxillary central incisors represented 70% of all teeth injured and 70% of the teeth belonged to children between 8 and 12 years of age. Falls (34%) and bicycle-riding (30%) were the most frequent reasons for trauma, followed by sports (14%) and assaults (13%). Boys were more often involved in trauma. Girls were as often involved in sports accidents as boys. Subluxation was the most frequent diagnosis (77%), followed by extrusion, intrusion, exarticulation and lateral luxation. Accidents were reported most frequently during spring and early summer. A slight increase was also noted during autumn.
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- Dozza, Marco, 1978, et al.
(author)
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Understanding driver self-regulating behavior: how does phone use influence vehicle control in real world?
- 2013
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In: Proceedings of the 3rd Conference of Driver Distraction and Inattention, Gothenbrug, 4-6 September, 2013.
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Conference paper (other academic/artistic)abstract
- In the last few years, research on driver distraction focused on assessing the extent to which usingmobile phones is compatible with safe driving. Many studies employing driving simulators suggestedthat using a phone while driving is definitely unsafe. Nevertheless, so far, naturalistic studies, as wellas aggregate crash statistics, did not match these results, keeping open the debate, and promisingguidelines for new countermeasures to distraction alternative to bans and based on understandingdriver behavior in the real world.Naturalistic data collected from 108 drivers in the Integrated Vehicle-Based Safety Systems (IVBSS)program in 2009 and 2010 was employed to determine how drivers change their vehicle controlwhen engaging in a conversation on, or manipulation of, a phone. Drivers were also divided intothree age groups 20-30 (young), 40-50 (middle-age), and 60-70 (older) to determine the possibleinteraction between age and phone use while driving on vehicle control.Using a phone for calling affected lateral control differently than manipulating a phone (as whiledialing or texting). However, no difference was found for longitudinal control. Young drivers used aphone while driving more often than older and middle-age drivers. In addition, young driversexhibited smaller safety margins while using a phone as well as faster reactions. Finally, the resultssuggest that drivers tend to interrupt phone interactions when the driving context becomes morecomplex.In conclusion, this study suggests that driver self-regulating behavior is the key to assess the netsafety effect of using a phone while driving. Consequently, countermeasures able to support thedrivers’ inherent self-regulating behavior may be a more successful, and more widely adoptedsolutions, than phone bans toward addressing the potential for distraction posed by phones whiledriving.
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- Frühwald, Eva, et al.
(author)
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Teachers’ view on combining assessment elements into a holistic assessment concept
- 2008
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In: [Host publication title missing].
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Conference paper (peer-reviewed)abstract
- Abstract in UndeterminedAssessments of students’ knowledge and skills are sometimes habitually performed, but the design of proper assessment concepts – beneficial to both teaching and learning – ought to be a central issue for all course planners in higher education. The main purpose of this paper is to discuss a variety of assessment elements, as well as ways in which to combine them. It uses experiences from Lund University’s Faculty of Engineering (LTH) to provide suggestions and advice for course planners. The discussion is based on the combination of a literature review in the field of teaching and learning, of empirical material obtained from surveys and group discussions with 22 teachers at LTH, and of the authors’ own experiences in their capacity as course leaders and teachers. The study reveals a preference for projects and written assessment, as compared with the less preferred individual oral assessment. The paper indicates potential for quality enhancements through the adapted tailoring of assessment elements into holistic assessment concepts.
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