Marginal Bone Loss Around Implants
Conditions
Brief summary
ABSTRACT Statement of the problem: Insufficient long-term retrospective data is evaluating marginal bone loss and retention of four-implant Locator-retained mandibular overdentures. Purpose: To assess marginal bone loss and retention of four-implant Locator-retained mandibular overdentures over seven years at the time of overdenture insertion (T0), 1 year (T1), and 7 years (T7) after insertion. Material and methods: This retrospective study included 27 completely edentulous patients with maxillary single denture, and four parallel implants were placed interforaminal, and they already have a mandibular four-implant retained overdenture with LOCATOR attachments.
Interventions
OTHERimplant retained overdenture
4 implants retained prosthesis by locators
DEVICEfour dental implant with locator attachment
A mandibular overdenture retained by four dental implants using Locator attachments. The implants are positioned in the anterior and premolar regions of the mandible, and the prosthesis is retained by four Locator attachments. Patients are followed clinically and radiographically over the follow-up period.
Sponsors
Mansoura University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
Inclusion criteria
Patients rehabilitated with a mandibular overdenture retained by four dental implants. Four implants positioned in the anterior and premolar regions of the mandible. Four Locator attachments used to retain the mandibular overdenture. Availability of baseline clinical and radiographic records at the time of prosthesis insertion. Availability of clinical and radiographic records at 1-year and 7-year follow-up.
Exclusion criteria
Patients with incomplete clinical or radiographic records. Patients without the required 1-year or 7-year follow-up records. Patients with radiographs that were inadequate for reliable assessment of peri-implant marginal bone levels. Patients whose records did not allow assessment of prosthetic retention at the specified follow-up periods.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Marginal Bone Loss by periapical radiography | From the time of implant loading (Baseline), 1year and 7 years. | Marginal bone loss will be assessed using standardized intraoral periapical radiographs. The vertical distance from the implant reference point to the alveolar bone crest will be measured on the mesial and distal surfaces of each implant. Measurements will be recorded at implant insertion (baseline), 1 year, and 7 years, and the mean value of the four implants will be calculated for each patient. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Prosthetic Retention by a digital force gauge | baseline, 1year and 7 years. | Prosthetic retention will be assessed by measuring the dislodging force required to remove the mandibular overdenture using a digital force gauge. The retention force will be recorded in Newtons (N) at baseline and at 7 years after insertion. |
Countries
Egypt
Outcome results
None listed