Effect of the abutment shape on soft tissue healing. A randomized clinical pilot study involving a digital superposition methodology.

Aim: To compare the effect of the shape of the healing abutment, concave or straight, on the dimensions of the soft tissue after healing.

Materials And Methods: Patients needing implant therapy in the posterior area were treated with a 1-stage surgery protocol; concave (CONC) or straight (STR) healing abutments were randomly assigned after implant installation. Before surgery, a CBCT and an intra-oral scan were obtained (IOS#0); IOS#1 was taken after soft tissue healing.

A novel digital way to measure the vertical and horizontal dimensions of the supra-crestal peri-implant soft tissues.

Aim: To report on a novel digital superimposition workflow that enables measuring the supra-crestal peri-implant soft tissue dimensions all along implant treatment and afterwards.

Materials And Methods: A preoperative CBCT and intra-oral scans (IOS) are successively taken before surgery, at the end of the healing period, at prosthesis delivery, and over time; they are digitally superposed on a dedicated software. Then, the stereolithography files (STL) of the healing abutment, of the prosthetic abutment and the crown are successively merged into the superposition set of IOSs.

P-selectin inhibition reduces severity of acute experimental pancreatitis.

Background: Acute pancreatitis (AP) is characterized by disturbed pancreatic microcirculation with tissue necrosis. Platelet and leukocyte activation contributes to microcirculatory disorders and inflammatory tissue infiltration. P-selectin mediates the adhesion of both activated platelets and leukocytes to the vessel wall.

Adhesion of bonded orthodontic attachments to dental amalgam: In vitro study.

Bonding orthodontic attachments to molars is difficult in the presence of extensive buccal amalgam restorations. The purposes of this study were (1) to examine different amalgam surface preparations, (2) to examine properties of adhesive cements to amalgam, (3) to determine the most shear-resistant bonding technique and (4) to discuss whether these shear bond strengths were of adequate magnitude to be of clinical acceptability. The sample consisted of 108 standardized amalgam cylinders divided into 9 groups of 12 based on surface treatment technique and resin type.

Normal lung perfusion scan with extensive thromboembolic disease.

A 50-year-old woman with unexplained pulmonary hypertension had normal findings on six-view lung perfusion scan prior to open lung biopsy. The biopsy demonstrated old organized thrombi. The patient expired and autopsy disclosed extensive thromboembolic disease, both old and new.

Words, pictures, and priming: on semantic activation, conscious identification, and the automaticity of information processing.

We investigated the encoding mechanisms involved in the perceptual recognition of words and pictures. Latencies in naming word and picture targets were analyzed as a function of several characteristics of a preceding prime, including whether it was a word or a picture, its duration of exposure, the interval between the prime and target onset, and whether or not the prime was consciously identified and reported by the subject. Results indicated that a common semantic code is available that can represent the meaning of either a word or a picture.

Early extraction of meaning from pictures and its relation to conscious identification.

Two experiments were conducted in which subjects labeled target pictures preceded by either semantically related or unrelated prime pictures. The exposure duration of each prime was varied around a threshold value, established separately for each subject, that represented the minimum viewing time necessary to identify the prime picture with 100% accuracy. The results of the first study indicated that semantic-priming effects can be obtained with pictures at prime exposure durations too brief for conscious identification of the prime to occur.

Intelligence-related differences in the relative salience of object-property relationships.

Three groups of nonretarded children, ranging in age from 8 to 16 years, and a group of EMR 16-year olds (MA = 10) were asked to verify statements about the properties of animate and inaminate objects. Properties were of four types: intrinsic-action (e.g.

Verification of property statements by retarded and nonretarded adolescents.

Educable mentally retarded and nonretarded adolescents verified true and false statements about the properties of common objects. For the true sentences, one-half contained properties rated as highly salient to the given object, and half contained less salient properties. Further, at each level of salience, one-half of the properties were static (physical) properties, e.

Category structure and semantic priming in retarded adolescents.

This study was designed to investigate the internal structure of semantic categories in mentally retarded adolescents as reflected in naming times to pictures of common objects. Pictures were presented in pairs that consisted of either categorically related or unrelated items. For related pairs, both the primes (first pictures) and targets (second pictures) varied in rated "typicality" (Rosch, 1975), being either typical or relatively atypical members of their primary superordinate category.

Reassessment of category knowledge in retarded individuals.

We investigated retarded individuals' knowledge of conceptual categories as reflected by semantic priming effects. In the first experiment, retarded individuals were shown pairs of pictures, one picture at a time, and asked to name each picture as rapidly and accurately as possible. The pictures in each pair were objects that were either categorically related or unrelated.

Evidence for dimensional independence in short-term memory of retarded individuals.

This experiment was designed to assess the relative importance of dimensional similarity between test and interpolated problems and absolute difficulty of interpolated material as variables influencing short-term retention in the discrimination learning of retarded persons. Twenty moderate-to-borderline retarded individuals were taught a mixed series of two-trial discriminations consisting of: (a) relatively easy multidimensional ("junk") problems and (b) more difficult, form-relevant dotpattern discriminations. Test problems and interpolations were either dimensionally similar (both junk or both dot-pattern problems) or dissimilar (train one type of problem, interpolate the other).