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Periimplant Bone Changes in Different Abutment Heights and Insertion Timing in Posterior Mandibular Areas

Dental Implant Failed Clinical Trial

Official title:
Periimplant Bone Changes in Different Abutment Heights and Insertion Timing in Posterior Mandibular Areas: Results From a Randomized Prospective Clinical Trial

Clinical Trial Summary

The aim of this study was to compare the influence of the abutment height and insertion timing on early marginal bone loss (MBL) in posterior mandibular partial implant-supported restorations.

Material and methods: The study was planned as a prospective, randomized, controlled parallel group including subjects in need of two implants for the restoration of an edentulous posterior mandibular area. Data were gathered on age, gender, attached gingiva height, bleeding on probing (BoP), smoking habits and previous periodontitis. The patients were allocated into three groups: Group A implants were immediately connected to 2 mm height abutments; Group B implants were immediately connected to 1 mm height abutments; Group C implants were left to heal in a sub-mucosal position and 2 mm abutments were inserted in a second stage surgery. Peri-apical radiographs were taken at the implant surgery (baseline), 4 weeks after surgery (T1), 16 weeks after implant placement at the final restoration delivery (T2) and 1-year after implant placement (T3).

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04340726
Study type Interventional
Source Universidade Católica Portuguesa
Contact
Status Completed
Phase N/A
Start date January 1, 2015
Completion date December 31, 2015
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