Effect of Using Locator Versus O-Ring Attachments on Hybrid Implants Retaining Lower Complete Dentures
Seham Esmat Mohamed Abd El Motaleb;
Abstract
This study was conducted to evaluate the effect of using Locator system versus O-Ring attachments used with one piece hybrid implants retaining mandibular complete overdentures, on the resorption of both peri-implants and posterior bone tissues, assessed by cone beam computed tomography.
Fourteen completely edentulous patients were selected from the outpatient clinic of prosthodontic department, Faculty of Dentistry, Ain Shams University and they were divided into two equal groups randomly:
Group (I)
Seven patients in group (I) received three hybrid implants (2.9 mm. diameter, 12 mm. length) with Locator attachments placed in the inter-foraminal region as mandibular overdenture abutments.
Group (II)
Seven patients in group (II) received three hybrid implants (2.9 mm. diameter, 12 mm. length) with O-ring attachments placed in the inter-foraminal region as mandibular overdenture abutments.
Each patient was diagnosed thoroughly with CBCT to determine the quality of bone, proximity to vital structures and the exact position for placement of the three implants.
All patients were treated with conventional maxillary dentures and mandibular overdentures retained by three one-piece hybrid implants with attachments according to the group.
Patients were recalled frequently to perform any needed adjustments, the follow up appointments were scheduled at the loading time, after six months and after twelve months.
A CBCT radiograph was conducted for each patient on the mandible at the three follow up appointments. The software of the radiography allowed for very accurate measuring of bone height at the peri-implants crestal area. The measurements were done from the apex of the implant to the crestal bone. Readings of mesial, distal, lingual and labial surfaces were obtained for each implant. Bone height of the residual ridge at the posterior mandible at the area of first molar on both sides was also measured at the same three radiographs for each patient, the mean was calculated and statistically analyzed and compared.
In both groups there was peri-implants and posterior mandible crestal bone loss. The difference in peri-implants bone loss was insignificant between both groups and it was within the accepted range. Posterior bone loss was found to be significantly greater in group I (Locator
Fourteen completely edentulous patients were selected from the outpatient clinic of prosthodontic department, Faculty of Dentistry, Ain Shams University and they were divided into two equal groups randomly:
Group (I)
Seven patients in group (I) received three hybrid implants (2.9 mm. diameter, 12 mm. length) with Locator attachments placed in the inter-foraminal region as mandibular overdenture abutments.
Group (II)
Seven patients in group (II) received three hybrid implants (2.9 mm. diameter, 12 mm. length) with O-ring attachments placed in the inter-foraminal region as mandibular overdenture abutments.
Each patient was diagnosed thoroughly with CBCT to determine the quality of bone, proximity to vital structures and the exact position for placement of the three implants.
All patients were treated with conventional maxillary dentures and mandibular overdentures retained by three one-piece hybrid implants with attachments according to the group.
Patients were recalled frequently to perform any needed adjustments, the follow up appointments were scheduled at the loading time, after six months and after twelve months.
A CBCT radiograph was conducted for each patient on the mandible at the three follow up appointments. The software of the radiography allowed for very accurate measuring of bone height at the peri-implants crestal area. The measurements were done from the apex of the implant to the crestal bone. Readings of mesial, distal, lingual and labial surfaces were obtained for each implant. Bone height of the residual ridge at the posterior mandible at the area of first molar on both sides was also measured at the same three radiographs for each patient, the mean was calculated and statistically analyzed and compared.
In both groups there was peri-implants and posterior mandible crestal bone loss. The difference in peri-implants bone loss was insignificant between both groups and it was within the accepted range. Posterior bone loss was found to be significantly greater in group I (Locator
Other data
| Title | Effect of Using Locator Versus O-Ring Attachments on Hybrid Implants Retaining Lower Complete Dentures | Other Titles | تأثير إستخدام الروابط الحلقية مقابل روابط اللوكاتور على الغرسات المتوسطة القطر والمثبتة للأطقم الكاملة السفلية | Authors | Seham Esmat Mohamed Abd El Motaleb | Issue Date | 2016 |
Attached Files
| File | Size | Format | |
|---|---|---|---|
| G13902.pdf | 871.97 kB | Adobe PDF | View/Open |
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