University of Gothenburg

About: University of Gothenburg is a education organization based out in Gothenburg, Sweden. It is known for research contribution in the topics: Population & Poison control. The organization has 23855 authors who have published 65241 publications receiving 2606327 citations. The organization is also known as: Göteborg University & Gothenburg University.

Modeling of the buccal and lingual bone walls of fresh extraction sites following implant installation

Abstract: Objective: To determine whether the reduction of the alveolar ridge that occurs following tooth extraction and implant placement is influenced by the size of the hard tissue walls of the socket. Material and methods: Six beagle dogs were used. The third premolar and first molar in both quadrants of the mandible were used. Mucoperiostal flaps were elevated and the distal roots were removed. Implants were installed in the fresh extraction socket in one side of the mandible. The flaps were replaced to allow a semi-submerged healing. The procedure was repeated in the contra later side of the mandible after 2 months. The animals were sacrificed 1 month after the final implant installation. The mandibles were dissected, and each implant site was removed and processed for ground sectioning. Results: Marked hard tissue alterations occurred during healing following tooth extraction and implant installation in the socket. The marginal gap that was present between the implant and the walls of the socket at implantation disappeared as a result of bone fill and resorption of the bone crest. The modeling in the marginal defect region was accompanied by marked attenuation of the dimensions of both the delicate buccal and the wider lingual bone wall. Bone loss at molar sites was more pronounced than at the premolar locations. Conclusion: Implant placement failed to preserve the hard tissue dimension of the ridge following tooth extraction. The buccal as well as the lingual bone walls were resorbed. At the buccal aspect, this resulted in some marginal loss of osseointegration.

Incidence and prevalence of the 22q11 deletion syndrome: a population-based study in Western Sweden.

Abstract: Backgound: Almost all cases of DiGeorge syndrome, velo-cardio-facial syndrome and conotruncal anomaly face syndrome result from a common deletion of chromosome 22q11.2. These syndromes are usually referred to as the 22q11 deletion syndrome (22q11DS), which has a wide phenotypic spectrum and an estimated incidence of one in 4000 births. Aims: To assess the incidence and prevalence of the 22q11 deletion syndrome in the Western Gotaland Region of western Sweden Methods: Children below 16 years of age with 22q11DS in a well defined catchment area and population of the Western Gotaland Region were recruited. Diagnosis of 22q11DS was confirmed using a FISH (fluorescence in situ hybridisation) test. Proven 22q11 deletion was the demonstration of one signal in 11 metaphase spreads with fair quality. Results: During the study period in the Western Gotaland Region the mean annual incidence of 22q11DS was 14.1 per 100 000 live births. During the first five years the incidence was 18.1 per 100 000 live births for the whole region and 23.4 per 100 000 live births in Gothenburg, where a multidisciplinary specialist team for 22q11 DS is based. The prevalence was 13.2 per 100 000 children below 16 years of age in the whole region and 23.3 per 100 000 in Gothenburg. Conclusion: The number of individuals diagnosed depends on the experience and awareness of the syndrome among specialists who encounter these children and also the severity of the phenotype. The higher frequency of 22q11DS found in Gothenburg is an example of increased awareness. The true incidence and prevalence of this syndrome will only be found through population-based screening, but this would be too expensive and ethically questionable. Screening of specific risk populations would be more justified.

Theorising the rise of Regionness

Abstract: (2000). Theorising the Rise of Regionness. New Political Economy: Vol. 5, No. 3, pp. 457-472.