An In Vitro Evaluation of the Loosening of Different Interchangeable Abutments in Internal-Connection-Type Implants.

Purpose: The aim of this study was to compare the loosening of interchangeable one-piece abutments connected to internal-connection-type implants after cyclic loading.

Materials And Methods: Four implant abutment groups (n = 7 in each group) with Straumann tissue-level implants were assessed: Straumann solid abutment (group S), Southern Implants solid abutment (group SI), Implant Direct straight abutment (group ID), and Blue Sky Bio regular platform abutment (group BSB). The implant was firmly held in a special jig to ensure fixation.

Axial displacement of external and internal implant-abutment connection evaluated by linear mixed model analysis.

Purpose: To analyze the axial displacement of external and internal implant-abutment connection after cyclic loading.

Materials And Methods: Three groups of external abutments (Ext group), an internal tapered one-piece-type abutment (Int-1 group), and an internal tapered two-piece-type abutment (Int-2 group) were prepared. Cyclic loading was applied to implant-abutment assemblies at 150 N with a frequency of 3 Hz.

Effects of anodized oxidation or turned implants on bone healing after using conventional drilling or trabecular compaction technique: histomorphometric analysis and RFA.

Objectives: The aim of this study was to compare the bone healing characteristics adjacent to anodic oxidation and turned surfaces after implant installation using the trabecular compaction technique or the conventional drilling technique in the soft bone area.

Material And Methods: A total of 72 implants (36 anodic oxidation surface and 36 turned surface implants) were inserted into the distal end of the femur head of 12 dogs by two different surgical techniques. There were four experimental groups: (1) DT group; drilling+turned, (2) DO group; drilling+oxidation, (3) CT group; compaction+turned, and (4) CO group; compaction+oxidation.