Bone ring augmentation around immediate implants: A clinical and radiographic study

Autogenous bone ring augmentation around single tooth implantation in the esthetic zone: A retrospective case series study with 2–3 years of follow-up

“… 12 A study utilizing autogenetic bone ring reported a mean crestal bone resorption of 0.61 mm mesially and 0.64 mm distally at 6 months postoperative. 6 A recent retrospective clinical study using xenogeneic BRT reported that the MBL was 1.46 ± 0.38 mm on the buccal side of the implants one year after prosthetic restoration. 25 In this study, aa total of 14 implant sites showed a mean vertical bone gain of 5.55 ± 0.87 mm and a mean horizontal bone gain of 4.73 ± 0.70 mm at 4 months post-surgery.…”

“…The autogenous cortical bone block is the main choice for BRT which can be harvested from the chin, hard palate, or retromolar regions. 6 , 20 The chin region is the main intraoral donor site, but it still carries the disadvantage of a secondary surgical area, prolonged surgery time, and potential paresthesia in the symphyseal region. 21 In situ bone ring harvesting is another choice, bone rings harvested from the maxilla contain more cancellous bone tissues, supplying abundant osteoprogenitor cells and consequently encouraging the rapid ingrowth of local vessels as well as the revascularization process.…”

“… 5 BRT has been clinically applied and documented in several case reports showing excellent outcomes for dimensional bone augmentation. 6 , 7 A recent systematic review including 16 BRT studies revealed superior bone ring and implant survival rates (97.26% and 94.97%, respectively), as well as remarkable vertical bone gain of 4.94 mm and acceptable bone resorption and marginal bone loss (MBL) (0.83 mm and 0.57 mm, respectively) after an average follow-up of 13.35 months. 8 However, there is not enough evidence for the long-term effect of BRT, and different studies have demonstrated independent bone augmentation results compared with other GBR-based methods.…”

The Bone Bridge Technique Utilizing Bone from the Lateral Wall of the Maxillary Sinus for Ridge Augmentation: Case Reports of a 1–7 Year Follow-Up

“…Classical techniques for VBA include onlay graft using autogenous bone blocks, distraction osteogenesis, and the use of particulate bones and PTFE membranes [ 21 ]. The bone ring technique and sausage technique have also been introduced [ 11 , 22 ]. Symphysis or ascending ramus as main donor sites have been widely used for ridge reconstruction for implant placement for a long time [ 11 , 23 ].…”