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SAMMANFATTNINGInledning: Vårdrelaterade infektioner har under den senaste tiden fått stor uppmärksamhet inom vård och omsorg. Dessa infektioner kostar samhället miljontals kronor varje år och dessutom ökar användningen av antibiotika tillsammans med utvecklingen av antibiotikaresistens. Det bästa sättet att motverka resistensutveckling och vårdrelaterade infektioner är att vara noga med basala hygienrutiner och handdesinficering. Syfte: Undersöka följsamhet, attityd och studenternas syn på deras egen kunskap för hygienrutinerna vid Tandvårdshögskolan i Malmö.Material och Metod: Vi har undersökt, genom punktprevalensmätning, hur tandläkarstudenterna vid Tandvårdshögskolan i Malmö följer de riktlinjer som Socialstyrelsen har utformat vid patientnära arbete. Synen på kunskap och attityd har utvärderats genom en webbaserad enkät som skickats ut till samtliga studenter som går i kurs 3 till och med kurs 10.Resultat: Tandläkarstudenterna följer riktlinjerna som Socialstyrelsen utformat väl på alla punkter utom handdesinficering och användandet av plastförkläde. Genom webbenkäten kan man se att studenterna medvetet struntar i att använda plastförkläde p.g.a. att det blir för varmt. Studenterna anser sig ha god kunskap och anser sig följa rutinerna för handdesinficering fullt ut men observerad följsamhet säger det motsatta. 60-80% av studenterna struntar i eller glömmer handdesinfektion under patientbehandling. Konklusion: Studenterna brister i följsamhet för handdesinfektion och användning av plastförkläde. Studenterna ser kurskamrater bryta mot hygienrutiner men säger inte till. Studenterna övervärderar sin egen följsamhet jämfört med vad som observerats. / ABSTRACTIntroduction: Hospital-acquired infections are a burden to society with an annual cost of millions of SEK. The use of antibiotics and the development of antibiotic resistance are on the increase. The most efficient way to counteract development of antibiotic resistance and hospital-acquired infections is to be immaculate with the basic hygiene routines and to disinfect the hand before and after every patient encounter.Aim: Evaluate student compliance, view on knowledge and attitude regarding basic hygiene routines set by the National Board of Sweden at Malmö University of Dentistry.Materials and methods: In this study, a point prevalence measurement has been carried out at the student’s clinic at Malmö University of Dentistry. Furthermore, knowledge and attitude towards the routines have been evaluated with a web-based survey sent out to students at the faculty.Results: Results of this study show that the students follow the National guidelines well, except for the use of apron and the disinfection of their hands during treatment sessions. In contrast to the aprons, the students consider themselves correctly following the routines of disinfection and also have knowledge about how it should be carried out and when. Analysis of the point prevalence measurement shows that 60-80 % of the students fail to follow the routines of hand disinfection. Conclusion: The students lack in compliance regarding to hand disinfection and the use of apron. They see their classmates violate the guidelines but do not inform them of the violation. The students overestimate their own compliance compared to what have been observed.

Objectives: The presence of sinus septa may cause complications in maxillary sinus elevation surgery such as perforations. CBCT is important for planning the size, shape, and position of the sinus septa, and help separation of the sinus membrane from the bony septum. The purpose of this study is to determine the prevalence, location and morphology of maxillary sinus septa in patients of Temple University Kornberg School of Dentistry.  Materials and Methods: Eight hundred and twenty one scans taken in Temple University Kornberg School of Dentistry between 2009 to July 31, 2013 were evaluated by use of the iCAT software. Age, gender, ethnicity, and dentition status were also evaluated to determine potential relationship of the presence of sinus septa. Results: This study included 680 patients subdivided by gender into 360 female and 320 male, and subdivided by ethnicity into 408 Caucasian, 61 Asian, 51 Hispanic, and 160 African Americans. Septa were present in 303 of 680 patients (44.56%) and 485 of 1360 sinuses (35.7%) evaluated. 26.76% of patients with one or multiple sinus septa were present on both sides of the sinus, and 17.79% of patients with one or multiple septa were present on either right or left side only. Septa height has a mean of 5.26 mm (range of 1.2 to 22.30 mm). Septa were located in premolar, molar, and retromolar regions in 43.4%, 42.03% and 14.6 % respectively. The most common location of the septa is the second premolar region. Orientation of septa was vertical in 67.8 %, transverse 31.68 %, and horizontal 0.005% of cases. Complete septa were found in only 0.01 % of patients evaluated.  Conclusions: Incidence of septa was found in 44.56% of the scans. The age, gender, and ethnicity factors are not statistically significant. However, according to the Wald test, the prevalence of septa in Caucasian and Hispanic groups are statistically significant (p< 0.05) from African Americans. Prior to sinus augmentation surgery, CBCT scans should be carefully evaluated for the septa location and height to prevent surgical complication such as perforations. / Oral Biology