Publications by authors named "Dan Lundgren"

Older persons in Sweden are increasingly encouraged to continue living at home and, if necessary, be supported by home care services (HCS). Studies have examined whether the work environment of staff has an impact on the experiences and well-being of older persons in residential care facilities, but few have examined such associations in HCS. This study examined associations between home care staff's perceptions of their psychosocial work environment and satisfaction with care among older people receiving HCS.

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This study examines the association between nursing assistants' assessment of leadership, their psychosocial work environment, and satisfaction among older people receiving care in nursing homes and home care. Cross-sectional surveys were conducted with nursing assistants ( = 1,132) and people receiving care ( = 1,535) in 45 nursing homes and 21 home care units. Direct leadership was associated with the psychosocial work environment in nursing homes and home care.

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This study examines the association between nursing assistants' perceptions of their psychosocial work environment and satisfaction among older people receiving care in nursing homes and home care. Cross-sectional surveys were conducted among people receiving care ( = 1,535) and nursing assistants ( = 1,132) in 45 nursing homes and 21 home care units within municipal old-age care. Better psychosocial work environment was related to higher satisfaction in old-age care among the recipients.

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Aims And Objectives: To study leadership factors and their associations with psychosocial work environmental among nursing assistants who are engaged in old age care and to analyse (i) differences in the assessment of leadership factors and the assessment of psychosocial work environmental in nursing homes and home help services and (ii) the association between the psychosocial work environment and factors that are related to leadership in nursing homes and home help services.

Background: Leadership factors are an important element of the psychosocial work environment in old age care. The physical distance between leaders and nursing assistants is larger in home help services than in nursing homes.

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Aim: The purpose of this in vitro study was to investigate the influence of degree of stiffness of implant-abutment connection of a Brånemark implant system on load- deflection ratios in three dimensions of the beam-end of a screw-retained stiff cantilever beam when subjected to vertically directed loads.

Material And Methods: Two different implant-abutment connections were tested; welded and screw-retained. One of the abutments (EsthetiCone 2.

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Background: Alternative implant designs may reduce the need for complicated and costly bone augmentation procedures in situations with limited bone height.

Purpose: Wide dental tube implants have been manufactured and tested in three patients and followed for 5 years to evaluate if such implants are capable to support fixed prosthetic constructions with good prognosis in areas with limited bone height.

Materials And Methods: Four machined-tube implants with a height of 6 mm, an outer diameter of 7.

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Aim: The aim of this in vitro study was to develop and test an experimental set-up consisting of a video camera and computer-based optoelectronic motion analysis system, synchronized with a loading device, for studying load-dependent deflections in three dimensions of single implant-supported cantilever beams.

Material And Methods: One Brånemark System implant was tightly screwed into a steel plate so that the entire implant became submerged. An abutment was attached to the implant and a cast 22-mm-long cantilever gold alloy beam incorporating a prefabricated gold cylinder was attached to the abutment with a prosthetic gold screw.

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Aim: The aim of this study was to evaluate the accuracy, i.e. trueness (validity) and precision (repeatability) for load-dependent deflections in three dimensions of an implant-supported cantilever beam obtained with an optoelectronic motion analysis system compared with a well-known reference method.

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Background: It is important that peri-implant bone breakdown caused by, for example, undue load and/or peri-implantitis, is prevented or minimized. Some continuous loss of marginal bone is generally accepted, but the question remains as to what extent it must occur.

Purpose: The purpose of this study was to compile and compare data on peri-implant marginal bone level changes from prospective studies that have registered the peri-implant marginal bone level radiographically at the time of prosthetic loading, and after 5 years of follow-up for implant systems currently available on the market.

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Purpose: To report experiences with a transcutaneous soft tissue-anchored titanium port (T-port) attached to an intestinal tube for gastroduodenal infusion of levodopa/carbidopa in patients with Parkinson disease, and to describe and analyze complications related to the T-port, gastrostomy technique, and intestinal tube placement.

Materials And Methods: The T-port implantation and gastrostomy were done under local anesthesia in 15 patients (mean age, 64 years; range, 52-74 y). An intestinal tube (10 F) was attached to the T-port for duodenal/jejunal access.

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Objectives: To study the 5-year outcome of combined use of guided tissue regeneration (GTR) barriers and bovine bone in advanced periodontal defects.

Material And Methods: In each of 24 patients, one defect was surgically exposed, debrided, filled with bovine bone, and covered with a bioresorbable barrier. Re-examinations were made after 1, 3, and 5 years.

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Aim: To evaluate, in young adults, the effect of different preventive programmes on oral hygiene and to determine whether the variables investigated are predictors of gingival health.

Material And Methods: This randomized, blinded, parallel, controlled clinical study examined the effectiveness of three dental health programmes. Four hundred subjects aged 20-27 years, 211 males and 189 females, participated in the study.

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Objectives: Cranial vault is widely used in experimental models on membranous bone healing in general, guided bone augmentation (GBA) studies being one example. To our knowledge, however, few studies on the characteristics of the untreated calvaria regarding bone density, vessel topography, and their intra/interindividual variations and associations are available. The aims of this investigation were to (1) map the large vessel topography of the skull vault, (2) describe the parietal bones of the adult rabbit histologically and morphometrically, and (3) histologically compare untreated parietal bone with parietal bone that had been treated with a GBA device.

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Purpose: A transcutaneous port (T-port) has been developed allowing easy exchange of a catheter, which was fixed inside the device, using the Seldinger technique. The objective of the study was to test the T-port in patients who had percutaneous transhepatic biliary drainage (PTBD).

Methods: The T-port, made of titanium, was implanted using local anesthesia in 11 patients (mean age 65 years, range 52-85 years) with biliary duct obstruction (7 malignant and 4 benign strictures).

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Background: The long bones, which are of enchondral origin, are often used in histologic evaluations of dental implants that clinically will be placed in bones of membranous origin.

Purpose: The aim of this investigation was to study the effect of surgical trauma by multiple drill perforations on both enchondral and membranous bone--the tibial and maxillary bone architecture--8 weeks after surgery.

Materials And Methods: In eight rabbits the medial metaphyses of both tibiae and the edentulous ridges of both sides in the maxilla were surgically exposed.

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Purpose: Our primary aim was to use a rabbit guided bone augmentation model to evaluate whether use of autogeneic bone grafts or bovine bone mineral (BBM) combined with a space-making barrier enhances bone augmentation compared with a barrier alone.

Materials And Methods: Sixteen rabbits were studied. In each rabbit, 2 titanium cylinders, each with 1 titanium lid, were placed subcutaneously in perforated slits made in the cortical bones, with their open ends facing the parietal bones.

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The goal of this study was to report the long-term effect of different dental health programmes on young adult individuals' knowledge and behaviour relative to oral health. Over a 3 years period, the effect of three different dental health programmes on caries, gingivitis/periodontitis, and knowledge and behaviour concerning oral health in 400 Swedish young adults was evaluated. During the following 2 years, additional prophylactic measures--now based on the individual's symptoms and the prophylaxis previously received--were conducted and evaluated.

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The aims of the present investigation were to study (1). the influence of preimplant (4 weeks) surgical intervention and (2). the influence of the implant placement per se on bone density and mineralized bone-implant contact (BIC) at implant sites in the rabbit jawbone.

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Background: It has been shown that bone can be augmented beyond the original skeletal envelope by using space-making barriers. Further, it has been suggested that perforation of the contiguous donor bone enhances bone formation in guided bone augmentation procedures.

Purpose: The goal of the present investigation was to evaluate whether perforations into the donor bone marrow through the cortical plate, located contiguous to an extracalvarial experimental space, influence bone generation into this space with regard to augmented bone tissue volume and bone density 3 months postoperatively.

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