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This study was conducted to clinically and radiographically evaluate locator RTx attachments for two implant-supported mandibular overdenture using two loading protocols
Thirty edentulous patients received two implants in the interformaninal region in the canine area . According to the loading protocol used for attaching mandibular overdenture, patients were randomly assigned into two equal groups. Group I (control): patients who would be delivered mandibular implant overdenture retained by two RTx locator attachments using conventional loading protocol. Group II (study): patients who would be delivered mandibular overdenture retained by two RTx locator attachments using early loading protocol. Peri-implant tissue health [Plaque (PL) and (GI) gingival scores, pocket depth (PD), and crestal bone loss (CBL)] were evaluated immediately after denture insertion (T0), 6 (T6), and 12 (T12) months after insertion.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Control group | Active Comparator | Group I (control): patients who would be delivered mandibular implant overdenture retained by two RTx locator attachments using conventional loading protocol |
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| Study group | Active Comparator | Group II (study): patients who would be delivered mandibular overdenture retained by two RTx locator attachments using early loading protocol. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| surgical placement of long dental implants | Procedure | Two interforaminal implants were placed in the canine region |
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| Measure | Description | Time Frame |
|---|---|---|
| Marginal bone loss | evaluations of crestal bone loss in mm around implants by digital periapical radiography | one year |
| plaque score | evaluation of plaque accumulation around RTX attachments using scores.score 0; absence plaque , score 1; plaque only detected by a probe passing through the smooth marginal surface of the implant, score 2; plaque can be recognized by naked eye, and score 3; plenty of soft matter. | one year |
| gingival index | evaluation of gingival bleeding around RTX attachments using scores.0; no bleeding when a periodontal probe is passed along the mucosal margin, 1;isolated bleeding spots visible, 2; blood forms a confluent red line on the mucosal margin, 3;heavy or profuse bleeding. | one year |
| pocket depth | evaluation of pocket depth in mm around RTX attachments | one year |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Christine Ibrahim | Al Mansurah | P.O.Box:35516 | Egypt |
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Patients were randomly assigned into two equal groups. Group I (control): patients who would be delivered mandibular implant overdenture retained by two RTX locator attachments using conventional loading protocol. Group II (study): patients who would be delivered mandibular overdenture retained by two RTx locator attachments using early loading protocol.
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The selected patients were stratified according to age, gender, years of mandibular edentulism, number of old non-satisfactory dentures (baseline criteria, table 1). Patients were assigned to one of 2 groups using a balanced randomization procedure to ensure comparability between groups regarding baseline characters;
| overdenture supported by RTX attachment system | Device | Control group: Implants were loaded after three months by RTX supported overdenture study group: Implants were loaded after four weeks by RTX supported overdenture |
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