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twenty patients received mandibular overdenture constructed by different construction techniques were classified equally and randomly into two groups peri implant bone loss was assessed by CBCT at baseline (T0), at1 year(T1), at 3 years(T3) and posterior ridge resorption was assessed by CBCT at baseline (T0), at 1 year( T1), at 3 years (T3). By superimposition of pre and post CBCT.
twenty patients received mandibular overdenture constructed by different construction techniques were classified equally and randomly into two groups (n = 10 per group): Group A: received milled mandibular overdenture opposed by maxillary complete denture. Group B: received 3D-printed mandibular overdenture opposed by maxillary acrylic complete denture. peri implant bone loss was assessed by CBCT at baseline (T0), at1 year(T1), at 3 years(T3) and posterior ridge resorption was assessed by CBCT at baseline (T0), at 1 year( T1), at 3 years (T3). By superimposition of pre and post CBCT.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| milled mandibular overdenture opposed by maxillary complete denture | Active Comparator | A denture base milled from a pre-polymerized block of polymethylmethacrylate (Ivobase CAD) along with milled denture teeth from a block of tooth coloured material PMMA (SR Vivodent CAD). |
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| 3D-Printed mandibular overdenture | Active Comparator | The printer (Rasdent 3d printer) was loaded with material of 3D-printed denture base and 3D- printed denture teeth (Dentca denture teeth shade A2). The mandibular denture teeth were printed as one unit then bonded to the lower printed denture base. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| peri implant bone loss was assessed by CBCT | Radiation | using CBCT, vertical bone loss (VBL) was measured at baseline (T0), at1 year(T1), at 3 years(T3) |
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| Measure | Description | Time Frame |
|---|---|---|
| peri implant bone loss | peri implant bone loss was assessed by CBCT | at baseline (T0), at1 year(T1), at 3 years(T3) |
| posterior ridge resorption | posterior ridge resorption was assessed by CBCT at baseline (T0), at 1 year( T1), at 3 years (T3). By superimposition of pre and post CBCT. | at baseline (T0), at 1 year( T1), at 3 years (T3). |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Mansoura University | Al Mansurah | Egypt |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 40604700 | Derived | El Khamisy NES, Emera RMK, Elmanci TM, Aboelez MA. Effect of two different digital construction techniques of mandibular implant-assisted overdentures on peri-implant bone loss and posterior ridge resorption: a 3-year prospective randomized clinical trial. BMC Oral Health. 2025 Jul 2;25(1):1040. doi: 10.1186/s12903-025-06425-0. |
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| posterior ridge resorption was assessed by CBCT | Other | posterior ridge resorption was assessed by CBCT at baseline (T0), at 1 year( T1), at 3 years (T3). By superimposition of pre and post CBCT. |
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