Abstract
BackgroundDimensional changes after dental extraction frequently lead to situations in which bone augmentation procedures are required prior to dental implant placement. Bone ring technique (BRT) has been described as a one-stage approach to restore vertical alveolar ridge defects, in which an autogenous or allogeneic cortico-cancellous bone block graft is stabilized with a dental implant inserted simultaneously. The objective of this systematic review was to evaluate the clinical performance of BRT.Materials and methodsThis review was conducted according to PRISMA guidelines. An electronic search was conducted in four databases: (1) The National Library of Medicine (MEDLINE/PubMed) via Ovid; (2) Web of Science (WOS); (3) SCOPUS; and (4) Cochrane Central Register of Controlled Trials (CENTRAL). The Newcastle-Ottawa Quality Assessment Scale and The Joanna Briggs Institute Critical Appraisal tool were used to assess the quality of evidence in the studies reviewed.ResultsSixteen studies with a total of 186 patients treated with 219 bone rings bocks were included in the review. The studies showed a mean bone gain of 4.94 mm, mean bone resorption of 0.83 mm, and mean marginal bone loss of 0.57 mm after a mean follow-up period of 13.35 months. A mean bone ring survival rate of 97.26% and implant survival rate of 94.97% were recorded.ConclusionsBRT would appear to be an adequate alternative technique for restoring single vertical alveolar ridge defects with simultaneous dental implant placement. However, further studies comparing this technique with other vertical ridge augmentation procedures in different clinical scenarios are needed to confirm the present results.
Highlights
Numerous studies have reported dimensional changes in the alveolar bone after dental extraction [1, 2]
The following outcomes were evaluated: (1) bone gain and bone resorption after Bone ring technique (BRT); (2) survival rates of bone ring blocks and implants placed after BRT; (3) marginal bone loss around implants placed with BRT; (4) associated complications
This systematic review aimed to analyze the clinical efficacy of BRT for restoring vertical alveolar ridge defects with simultaneous dental implant placement in terms of bone gain, bone resorption, Marginal Bone Loss (MBL), survival rates of bone rings and implants, and complications
Summary
Numerous studies have reported dimensional changes in the alveolar bone after dental extraction [1, 2]. Vertical ridge augmentation is a more biologically demanding technique and has been associated with higher complications rates and less predictable results due to its high sensitivity [7] These augmentation procedures often require a staged approach, as in alveolar osteogenesis distraction, guided bone regeneration (GBR), or reconstruction with bone blocks, which involve high morbidity and longer treatment time [7, 8]. In order to overcome these drawbacks, the bone ring technique (BRT) has been described as a one-stage approach for vertical ridge augmentation, in which an autogenous or allogeneic cortico-cancellous bone block graft is stabilized with a simultaneously inserted dental implant [9]. Bone ring technique (BRT) has been described as a onestage approach to restore vertical alveolar ridge defects, in which an autogenous or allogeneic cortico-cancellous bone block graft is stabilized with a dental implant inserted simultaneously. The objective of this systematic review was to evaluate the clinical performance of BRT
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