Vertical bone augmentation in a single‐tooth gap with an allogenic bone ring: Clinical considerations

Abstract

The application of the presented technique enabled a prosthetic rehabilitation of the extracted tooth about 3 months earlier as compared to the conventional procedure, while demonstrating no compromises regarding clinical outcome, functionality and esthetics.

Comparison of in‐situ bone ring technique and tent‐pole technique for horizontally deficient alveolar ridge in the anterior maxilla

“…Due to the strong osteogenic capacity, autogenous bone is still taken as the gold standard for the rehabilitation of alveolar ridge volume . The so‐called bone ring technique, as using a ring‐shaped autogenous bone block, has emerged recently and been documented in several medical records showing excellent outcomes for the dimensional bone augmentation . Nevertheless, most of the reports only emphasizes on the vertical augmentation and the existing proposal for horizontal bone augmentation is lack of investigation on the stability of the biomaterials and reflects drawbacks such as aggravating intraoperative pain due to the secondary surgical site and occurrence of the accompanying complications such as infection and paraesthesia of chin due to the incisal nerve injury …”

“…21 The so-called bone ring technique, as using a ring-shaped autogenous bone block, has emerged recently and been documented in several medical records showing excellent outcomes for the dimensional bone augmentation. [22][23][24][25] Nevertheless, most of the reports only emphasizes on the vertical augmentation and the existing proposal for horizontal bone augmentation is lack of investigation on the stability of the biomaterials and reflects drawbacks such as aggravating intraoperative pain due to the secondary surgical site and occurrence of the accompanying complications such as infection and paraesthesia of chin due to the incisal nerve injury. 26,27 Consequently, in this study, we mainly compared the volume alteration and bone profile maintenance ability between in-situ bone ring and tent-pole technique for the localized bone defect in anterior area to evaluate their effects on horizontal bone augmentation.…”

Bone Augmentation and Simultaneous Implant Placement with Allogenic Bone Rings and Analysis of Its Purification Success

“…Thus, allogeneic bone grafts are the most reliable alternative to autogenous bone with comparable clinical outcomes [14]. Moreover, in a former study it has been revealed that even processed freeze-dried bone allograft (FDBA) is equivalent to autogenous bone blocks regarding their volumetric graft remodeling rates for treating single tooth defects [15,16]. Block augmentation with FDBA represents a promising option due to low block graft failure rates, minimal resorption, and high implant survival rates [17,18,19].…”

“…Different concepts and biomaterials for the one-stage approach have already been developed but none of these concepts has shown to combine a bone substitute scaffold with a primary stability with the mean of a dental implant instead of titanium screws. To overcome this issue, the so-called “Bone Ring Technique” was developed based on a single surgery for bone augmentation and simultaneous implant placement [15,16,24,25,26]. This technique includes a cylindrical FDBA bone block that is fixed in a one-step procedure by means of a dental implant (Figure 1A) [15,16,24,25,26].…”

“…To overcome this issue, the so-called “Bone Ring Technique” was developed based on a single surgery for bone augmentation and simultaneous implant placement [15,16,24,25,26]. This technique includes a cylindrical FDBA bone block that is fixed in a one-step procedure by means of a dental implant (Figure 1A) [15,16,24,25,26]. Interestingly, this technique includes the surgical adaption of the implant bed to the bone graft in contrast to a variety of other bone substitute materials that are produced to fit into a bone defect as demonstrated by the following surgical steps of the Bone Ring Technique:Determine the diameter of the defect and the according bone ring with a trephine (6 or 7 mm) from the related “bone ring surgical kit”.Determine the implant position with the pilot drill from the bone ring surgical kit.Prepare the ring bed recipient site with the appropriate trephine (6 or 7 mm diameter) from a bone ring surgical kit.Straighten/decorticate the implantation bed of the bonering with the planator from the bone ring surgical kit.Reduce the height of the bone ring with a diamond disc from the bone ring surgical kit.Insert bone ring into the prepared recipient site.Prepare the implant osteotomy through the bone ring with the according drills from the implant system.Place the implant at least 3 mm in the local through the bone ring to gain primary stability of the implant.8.1 Place a Fixation Cap in case the ring has mobilityRound off the edges of the bone ring.Cover defect with a bone substitute material.Cover the graft with a barrier membrane and close the wound.…”