Comparison of the long-term survival rates of dental implants in onlay versus interpositional bone grafts for augmentation of the atrophic mandibular ridge.

al-Effect of maxillary sinus graft on the survival of endosseous implants: A 10-year retrospective study

Comparative Evaluation of Bone Ring versus Particulate Bone Graft using CBCT in Buccal Bone Augmentation with Simultaneous Implant Placement: A Randomised Controlled Trial

The Bone Ring Technique (BRT) is a newer viable option for restoring complex defects around dental implants with three-dimensional bone augmentation with significant height and width augmentation of buccal bone.

Autogenous Bone Graft for Horizontal Ridge Augmentation Associated with Simultaneous Implant Placement

The goal of this study was to evaluate the efficacy of autogenous bone grafts with and without recombinant human bone morphogenetic protein-2 for rehabilitation of narrow alveolar ridge width by dental implants. Twelve patients (2 males and 10 females), ranging from 36 to 60 years and a mean age of 47.08 years, were divided into two study groups. One received autogenous bone graft (A1) and the other group autogenous bone graft with rhBMP-2 using a collagen membrane (A2). All patients were clinically evaluated and received a CBCT for an accurate measurement of the alveolar ridge width, height, and after six months postoperatively. The mean difference in primary and secondary alveolar bone width (after 6 months) in group A1 was 4.14 mm, with a statistically significant difference (p < 0.05). Also, the mean difference in primary and secondary (after 6 months) alveolar bone width in group A2 was 5.14 mm, with a significant difference between them (P-value 0.00). The addition of rhBMP-2 increased the extent of bone width regeneration compared with the autogenous bone graft used alone. Both study groups showed a statistically significant increase in bone width at 6 months, with the highest increase observed in group A2 (ABG + rhBMP-2).

Investigation of the long-term prognosis (3-13 Years) of full mouth implant prosthetics combining zygomatic implants based on the all-on-four concept.

PURPOSE Zygomatic implants (ZIs) are indicated for severely atrophic maxillae where conventional implant (CI) placement is difficult. Although ZIs show favourable outcomes, factors influencing their survival remain unclear. This retrospective study evaluated implant- and patient-related factors associated with ZI survival in full-arch immediate-loading rehabilitation using the all-on-four concept combining ZIs and CIs. METHODS A total of 923 implants (323 ZIs and 600 CIs) placed in 203 patients between 2010 and 2021 were analysed. Cumulative survival rates were estimated using the Kaplan-Meier method, and intergroup comparisons were performed using the log-rank test. Cox proportional hazards regression analyses were performed to calculate hazard ratios (HRs). Statistical significance was set at p < 0.05. RESULTS Cumulative survival rates at 3-13 years were 94.5% and 95.9% at the patient and implant levels, respectively, for ZIs, and 97.9% and 98.7%, respectively, for CIs. ZIs showed significantly lower implant-level survival than CIs (p = 0.0178). Palatal positioning of the ZI platform was significantly associated with reduced implant-level survival (HR = 18.177, 95% CI: 1.418-233.053, p = 0.026). Systemic disease was significantly associated with reduced patient-level ZI survival after adjustment for sex and smoking status (HR = 14.872, 95% CI: 1.812-122.077, p = 0.012). CONCLUSIONS Immediate full-arch rehabilitation combining ZIs and CIs achieved high long-term survival; however, palatal platform positioning and systemic disease were associated with ZI failure.

The influence of implant placement depth on peri-implant tissues in immediate implant placement: A randomized controlled clinical trial with 1-year follow-up.

Immediate implants placed 6 mm below the mid-buccal gingival level showed significantly less short-term marginal bone loss than immediate implants placed 4 mm below the gingiva after a period of 1 year.

Crestal bone level changes and survival of immediately placed extra-wide diameter implants in posterior molar sites: A prospective clinical study

To evaluate crestal bone level changes and survival of immediately placed extra-wide diameter implants in posterior molar sites. This prospective clinical study included 30 patients requiring molar extraction and implant placement, with 28 patients completing follow-up. A total of 29 implants were placed immediately following atraumatic extraction and positioned subcrestally. Crestal bone levels were measured radiographically at placement and at a minimum of 1-year post-restoration using calibrated ImageJ analysis. The mean crestal bone level was 1.28 mm at placement and 0.46 mm at follow-up, with a mean change of 0.82 mm (95% confidence intervals: 0.34–1.29 mm). This difference was statistically significant ( p = 0.001). Despite this change, crestal bone levels remained coronal to the implant platform at follow-up. One implant failure occurred, resulting in a survival rate of 96.5%. Immediate placement of extra-wide diameter implants in posterior molar sites demonstrated high survival rates and maintenance of crestal bone levels above the implant platform, suggesting this approach is a predictable treatment option.