Clinical evaluations of alveolar ridge preservation in compromised extraction sockets with cortical‐lamina anchoring technique: Case series study

Abstract

Objective The objective of this study is to retrospectively evaluate the clinical outcomes of alveolar ridge preservation (ARP) in the compromised extraction sockets using autogenous cortical‐lamina anchoring technique (CAT). Material and methods Twenty patients were treated with ARP in the compromised extraction sockets by applying CAT. Then implant placement and crown delivery was performed. A planned follow‐up was performed by analyzing various outcome measures to evaluate the clinical outcomes, including primary outcome measures [radiographic assessment of residual alveolar ridge height (RARH) and residual alveolar ridge width (RARW)] and secondary outcome measures [clinical assessment of the healing of the soft and hard tissue, survival rates of implants, marginal bone loss (MBL) evaluation of implants, buccal bone thickness (BBT), and esthetic treatment outcomes]. Results Among the 20 patients, 17 were consecutively treated and 3 dropped out after implant crown delivery because of loss to follow‐up. After the ARP, the initial RARH (12.37 mm) significantly increased to 19.29 mm (P < .05). No significant difference was detected in the RARW before (7.92 ± 1.18 mm) and after (7.92 ± 1.18 mm) the ARP, but reduce to 6.99 ± 1.18 mm at the implant placement and 6.64 ± 0.77 mm at the 3‐year follow‐up (P < .05). The MBL at the implant crown delivery (0.13 ± 0.12 mm) significantly increased to 0.31 ± 0.14 mm at 1‐year follow‐up and 0.56 ± 0.23 mm at 3‐year follow‐up, respectively. The bone loss was limited (<1 mm) but statistically significant (P < .05). The BBT at the implant placement (2.53 ± 0.56 mm) significantly reduced to 2.23 ± 0.44 mm at implant crown delivery and 2.14 ± 0.40 mm at 3‐year follow‐up, respectively. The bone loss was also limited (<0.5 mm) but statistically significant (P < .05). Each implant site showed acceptable aesthetic outcome and the average score was 16.4. The incisions healed uneventful in all patients and the implant survival rate was 100% during the 3‐year follow‐up. Conclusion Autogenous CAT was successfully applied to preserve the height and width of alveolar ridge in the compromised extraction sockets.

Horizontal ridge augmentation in the maxillary aesthetic region using the autogenous circular cortical‐lamina anchoring technique: A case series study

“…To overcome these challenges, the Shell technique utilizes cortical bone, effectively minimizing donor bone requirements and maintaining regenerated bone width 25,27 . Building upon this, Guo and colleagues introduced the cortical lamina anchoring technique (CAT), an anchoring‐based concept demonstrating stable bone augmentation results for severe bone defects 28 . CAT tightly anchors the cortical bone lamina to the remaining bone, creating a stable space for bone augmentation with embedded bone graft particles.…”

“…25,27 Building upon this, Guo and colleagues introduced the cortical lamina anchoring technique (CAT), an anchoring-based concept demonstrating stable bone augmentation results for severe bone defects. 28 CAT tightly anchors the cortical bone lamina to the remaining bone, creating a stable space for bone augmentation with embedded bone graft particles. However, it is essential to note that both the Shell technique and CAT involve intricate, time-consuming bone harvesting surgeries that may increase the trauma associated with bone osteotomy.…”

The impact of computer-aided design and manufacturing on the time required for cortical lamina harvesting and positioning for augmentation of atrophic ridges (Randomized clinical trials)

“…The cortical lamina grafting is a technique of using a thin bone plate to resemble a shell acting like a biological membrane anchorage to the resorbed ridge using monocortical screws creating a box-like gap to be filled with bone particles this technique, Khoury demonstrates this technique and concludes that this procedure offers significant osteogenic capacity made by stable and thin cortical shell allowing for high revascularization and filled with autogenous bone particles carrying osteoprogenitor cells 3 .…”