---
title: Different Implant Positions for Implant Retained Mandibular Overdenture
nct_id: NCT06055842
overall_status: COMPLETED
phase: NA
sponsor: Mansoura University
study_type: INTERVENTIONAL
primary_condition: Bone Loss
countries: Egypt
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT06055842.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT06055842"
ct_last_update_post_date: 2025-01-07
last_seen_at: "2026-05-12T06:17:40.885Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Different Implant Positions for Implant Retained Mandibular Overdenture

**Official Title:** Retrospective Study on the Effect of Different Implant Positions for Implant Retained Mandibular Overdenture: Radiographic Evaluation of the Circumferential Bone Level and Bone Remodeling in the Anterior and Posterior Mandible

**NCT ID:** [NCT06055842](https://clinicaltrials.gov/study/NCT06055842)

## Key Facts

- **Status:** COMPLETED
- **Phase:** NA
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 12
- **Lead Sponsor:** Mansoura University
- **Conditions:** Bone Loss
- **Start Date:** 2023-08-23
- **Completion Date:** 2023-12-01
- **CT.gov Last Update:** 2025-01-07

## Brief Summary

This study will aim to evaluate the effect of two different implant positions, lateral incisors, and canine areas, on anterior and posterior ridge resorption and bone remodeling after different periods of denture insertion.

## Detailed Description

Twelve patients will be recruited from a previous study (14), having two-implant mandibular overdentures. Patients recalled from the database set of the clinic of the Removable Prosthodontic Department, Faculty of Dentistry, Mansoura University. The patients will be grouped based on the position of the two implants.

All patients will be informed about all prosthetic procedures that will be done. Also, they will sign the consent form of the ethical committee of the faculty of dentistry, at Mansoura University.

All selected patients with the following criteria: mandibular two implants retained overdenture opposing complete edentulous maxillary arch, attended the previous follow-up recalls with previous CBCT examination. Patients who didn't attend previous follow-up recalls, didn't perform radiographic follow-up, or had para-functional habits will excluded from the study Patients will be divided into two groups Group A (6 patients): Patients having two mandibular implants in lateral incisor positions.

Group B (6 patients): Patients having two mandibular implants in canine positions.

## Eligibility

- **Minimum age:** 50 Years
- **Maximum age:** 70 Years
- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
Inclusion Criteria:

* Patients with mandibular two implants retained overdenture opposing complete edentulous maxillary arch,
* attended the previous follow-up recalls with previous CBCT examination.

Exclusion Criteria:

* Patients who didn't attend previous follow-up recalls, didn't perform radiographic follow-up, or had para-functional habits will be excluded from the study.
```

## Arms

- **lateral incisor group** (ACTIVE_COMPARATOR) — Patients having two mandibular implants in lateral incisor positions.
- **canine group** (ACTIVE_COMPARATOR) — Patients having two mandibular implants in canine positions

## Interventions

- **over-denture** (OTHER) — implant retained overdenture prosthesis.

## Primary Outcomes

- **implant survival rate** _(time frame: 5 years)_ — index
- **circumferential bone loss** _(time frame: 5 years)_ — peri-implant bone changes in mm
- **posterior bone changes** _(time frame: 5 years)_ — bone loss in mm

## Locations (1)

- Khloud Ezzat, Al Mansurah, Egypt

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.maxAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.khloud ezzat|al mansurah||egypt` — added _(2026-05-12)_

---

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*Source data (authoritative): https://clinicaltrials.gov/study/NCT06055842*  
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