Dental Implant Failed
Conditions
Brief 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).
Interventions
PROCEDUREOne time abutment
Sponsors
Universidade Católica Portuguesa
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* patients age \> 18 years; * American Society of Anaesthesiologists (ASA) status I; * no systemic medication or condition known to potentially alter bone metabolism; - absense of acute periodontal condition.
Exclusion criteria
* lack of primary stability at implant surgery; * need for bone regeneration procedures during surgery; * inability to correct place the implant in accordance with the prosthetic requirements.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Marginal bone changes | 60 months | Crestal bone changes that occur around the dental implant |
Countries
Portugal
Outcome results
None listed