Milled in versus round bar for mini implant retained mandibular overdentures: a 8-year retrospective radiographic study of peri-implant bone changes and posterior ridge resorption
Abstract Objective This retrospective radiography study’s main objective was to compare round and milled bars for mandibular overdentures assisted by 4 mini-dental implants (MDI) on peri-implant marginal bone loss (MBL)and posterior mandibular ridge resorption(PRR) after 8 years. Materials and metho...
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2025-08-01
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| Online Access: | https://doi.org/10.1186/s12903-025-06689-6 |
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| author | Nermeen El Sayed El-Khamisy Radwa Mohsen Kamal Emera Heba Nabil Awad |
| author_facet | Nermeen El Sayed El-Khamisy Radwa Mohsen Kamal Emera Heba Nabil Awad |
| author_sort | Nermeen El Sayed El-Khamisy |
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| description | Abstract Objective This retrospective radiography study’s main objective was to compare round and milled bars for mandibular overdentures assisted by 4 mini-dental implants (MDI) on peri-implant marginal bone loss (MBL)and posterior mandibular ridge resorption(PRR) after 8 years. Materials and methods Thirty male Participants in a retrospective analysis were treated between 2016 and 2024 who had four interforaminal mini implants supporting an overdenture on a milled bar. Two equal groups of 15 patients each were randomly assigned to receive mandibular overdentures: Group I received overdentures retained by milled bars, while Group II received overdentures retained by round joint bars. After an 8-year follow-up period, a comparison between the two bar designs attachment used for IODs retention. The evaluation of the posterior ridge resorption (PRR) and peri-implant marginal bone loss(MBL) was done after three years (T3), five years(T5), and eight years later (T8)after insertion. The data was analyzed using the Statistical Package of Social Science (SPSS) program for Windows (Standard version 24). Results Compared to Group II, Group I’s MBL was noticeably higher. As time went on, MBL rose noticeably for both groups. At certain intervals, Group II’s PRR was significantly higher than its Group I. Conclusions The design of the anchorage system has a major impact on posterior ridge resorption and peri-implant bone loss when four mini-implants are utilized to anchor mandibular overdentures. Clinical relevance As mini implants are often seen as a cost-effective solution for patients with limited bone, it is important to understand their long-term performance to make more informed decisions in clinical practice. Clinical trial registry number (NCT06185283). Retrospectively registered on (29-12-2023). |
| format | Article |
| id | doaj-art-03e1c0437a7c4e91af5b2ad803d85fd9 |
| institution | Kabale University |
| issn | 1472-6831 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Oral Health |
| spelling | doaj-art-03e1c0437a7c4e91af5b2ad803d85fd92025-08-20T03:47:10ZengBMCBMC Oral Health1472-68312025-08-0125111010.1186/s12903-025-06689-6Milled in versus round bar for mini implant retained mandibular overdentures: a 8-year retrospective radiographic study of peri-implant bone changes and posterior ridge resorptionNermeen El Sayed El-Khamisy0Radwa Mohsen Kamal Emera1Heba Nabil Awad2Department of Prosthodontics, Mansoura UniversityDepartment of Prosthodontics, Mansoura UniversityDepartment of Prosthodontics, Mansoura UniversityAbstract Objective This retrospective radiography study’s main objective was to compare round and milled bars for mandibular overdentures assisted by 4 mini-dental implants (MDI) on peri-implant marginal bone loss (MBL)and posterior mandibular ridge resorption(PRR) after 8 years. Materials and methods Thirty male Participants in a retrospective analysis were treated between 2016 and 2024 who had four interforaminal mini implants supporting an overdenture on a milled bar. Two equal groups of 15 patients each were randomly assigned to receive mandibular overdentures: Group I received overdentures retained by milled bars, while Group II received overdentures retained by round joint bars. After an 8-year follow-up period, a comparison between the two bar designs attachment used for IODs retention. The evaluation of the posterior ridge resorption (PRR) and peri-implant marginal bone loss(MBL) was done after three years (T3), five years(T5), and eight years later (T8)after insertion. The data was analyzed using the Statistical Package of Social Science (SPSS) program for Windows (Standard version 24). Results Compared to Group II, Group I’s MBL was noticeably higher. As time went on, MBL rose noticeably for both groups. At certain intervals, Group II’s PRR was significantly higher than its Group I. Conclusions The design of the anchorage system has a major impact on posterior ridge resorption and peri-implant bone loss when four mini-implants are utilized to anchor mandibular overdentures. Clinical relevance As mini implants are often seen as a cost-effective solution for patients with limited bone, it is important to understand their long-term performance to make more informed decisions in clinical practice. Clinical trial registry number (NCT06185283). Retrospectively registered on (29-12-2023).https://doi.org/10.1186/s12903-025-06689-6Implant-supported overdenture (IODs)Round joint barMilled barMarginal bone lossPosterior ridge resorption |
| spellingShingle | Nermeen El Sayed El-Khamisy Radwa Mohsen Kamal Emera Heba Nabil Awad Milled in versus round bar for mini implant retained mandibular overdentures: a 8-year retrospective radiographic study of peri-implant bone changes and posterior ridge resorption BMC Oral Health Implant-supported overdenture (IODs) Round joint bar Milled bar Marginal bone loss Posterior ridge resorption |
| title | Milled in versus round bar for mini implant retained mandibular overdentures: a 8-year retrospective radiographic study of peri-implant bone changes and posterior ridge resorption |
| title_full | Milled in versus round bar for mini implant retained mandibular overdentures: a 8-year retrospective radiographic study of peri-implant bone changes and posterior ridge resorption |
| title_fullStr | Milled in versus round bar for mini implant retained mandibular overdentures: a 8-year retrospective radiographic study of peri-implant bone changes and posterior ridge resorption |
| title_full_unstemmed | Milled in versus round bar for mini implant retained mandibular overdentures: a 8-year retrospective radiographic study of peri-implant bone changes and posterior ridge resorption |
| title_short | Milled in versus round bar for mini implant retained mandibular overdentures: a 8-year retrospective radiographic study of peri-implant bone changes and posterior ridge resorption |
| title_sort | milled in versus round bar for mini implant retained mandibular overdentures a 8 year retrospective radiographic study of peri implant bone changes and posterior ridge resorption |
| topic | Implant-supported overdenture (IODs) Round joint bar Milled bar Marginal bone loss Posterior ridge resorption |
| url | https://doi.org/10.1186/s12903-025-06689-6 |
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