A randomized controlled trial of ball and socket vs O-ring attachments for single implant-retained mandibular overdentures. A study of crestal bone loss and patient satisfaction | ||||
| Egyptian Dental Journal | ||||
| Article 33, Volume 67, Issue 4, October 2021, Page 3629-3641 PDF (1012.49 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2021.91202.1758 | ||||
 View on SCiNiTO | ||||
| Author | ||||
Dina El talawy  
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| Associate Professor, Removable Prosthodontic Department College of Oral and Dental Surgery, Misr University For Science and Technology, Giza Egypt. | ||||
| Abstract | ||||
| Purpose: This short term randomized controlled trial aimed to evaluate crestal bone loss and patient satisfaction of ball and socket and O-ring attachments used to retain single implant-retained mandibular overdenture after one year. Materials and methods: Twelve completely edentulous patients received single implant in the midline of the mandible. Three months later, the patients were randomly assigned into two groups; Group 1 (control group); six patients their mandibular dentures were connected to the implant using ball and socket attachment. Group 2 (test group); included six patients their mandibular dentures were connected to the implant using O/ring attachment. The peri-implant crestal bone loss was evaluated at mesial, distal, buccal and lingual aspects of each implant using cone beam computerized tomography made at baseline, 6 and 12 months later. Patient satisfaction was evaluated using questionnaire of visual Analogue Scales (VAS) six months after loading. Results: The implant survival rate was 100% in both groups. Ball and socket attachment recorded significant higher crestal bone loss than O-ring attachment after 6 months (p=.031) and 12 months (p=.021). Ball and socket attachment recorded significant higher patient satisfaction than O/ring attachment. Conclusion: O/ring attachment is recommended than ball and socket attachment for single implant mandibular overdentures in term of peri-implant bone preservation. However, ball and socket attachment was associated with significant higher patient satisfaction than O/ring attachment. | ||||
| Keywords | ||||
| ball and socket; O-ring attachment; single implant-retained mandibular overdentures; crestal bone loss; patient satisfaction | ||||
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