Optimization of the neck region of dental implants with a bioactive, resorbable coating.

With the goal of shortening the postoperative healing phase and the minimization of the risk of peri-implantitis around dental implants, a polymer coating, with improved surface biocompatibility in the region of soft tissue penetration by the implant, was investigated. The polymer used was the relatively slowly resorbable poly-beta-hydroxybuterate (PHB) whose surface was further activated in a NH3--plasma. The influence of surface roughness of the substrate (commercially pure titanium) as well as the influence of the edge radii on the test samples was determined in prior studies.

Dating and context of rock engravings in southern Africa.

Rock art is seldom recovered from sealed archeological contexts and is therefore difficult to date or integrate with other artifactual assemblages. South African engravings, found on low rocks at open-air sites, exemplify the problem. Multiscale spatial study of technique, thematic variation, faunal content, geoarcheological paterning, settlement history, and ethno-archeological setting provides coherent information on environment, time, and group identity.

Complications in acute pancreatitis.

In a group of 260 non-selected cases of acute or subacute pancreatitis, severe complications occurred in 60 (23.1%). Long lasting shock and/or massive internal bleeding (5.

Complications in acute pancreatitis.

In a group of 260 non-selected cases of acute or subacute pancreatitis, severe complications occurred in 60 (23.1%). Long lasting shock and/or massive internal bleeding (5.

The aetiology of acute pancreatitis.

The most common aetiological factors of acute pancreatitis in an unselected group of 215 consecutive surgical patients were biliary tract disease (40.0%), alcoholism (20.0%) and gastroduodenal ulcer (4.

The aetiology of acute pancreatitis.

The most common aetiological factors of acute pancreatitis in an unselected group of 215 consecutive surgical patients were biliary tract disease (40.0%), alcoholism (20.0%) and gastroduodenal ulcer (4.

Fatal pancreatitis. A clinical and post-mortem study on 24 cases of acute pancreatitis with fatal outcome, with special reference to some clinical aspects of autopsy findings.

During the years 1955-1970, 260 patients were treated in the surgical department of the Maria Hospital for acute pancreatitis. 24 of them died and went to autopsy. This study includes all these 24 patients.

Conservative surgery in acute pancreatitis.

During the years 1955-1970, 260 patients were treated for acute pancreatitis in the surgical department of the Maria Hospital. 62 of them were operated on, 44 electively, and 18 as emergency cases. The main conclusions from this series are as follows: 1) if laparotomy is required, efficient debridement and drainage are of great importance, 2) random operative decompression of the biliary duct system is statistically of little benefit, 3) in most cases purely conservative treatment or conservative surgery, taking into account individual conditions, gives good results, but obviously more radical measures are necessary for a favourable outcome in the most severe cases, as reported in the current literature, 4) in elective surgery it is important to postpone the curative operation by several weeks, preferably months, when possible, to avoid exacerbation or relapse of the disease.