Long‐term clinical and radiographic evaluation after maxillary sinus floor augmentation with octacalcium phosphate–collagen composite: A retrospective case series study

Abstract

The purpose of this study was to evaluate, using clinical and radiological assessments, the stability of dental implants 5 years after maxillary sinus floor augmentation with octacalcium phosphate-collagen composite (OCP/Col). Maxillary sinus floor augmentation was performed through a lateral window approach. Depending on the height of the host bone, a simultaneous approach (≥5 mm) or a staged approach (less than 5 mm) was employed. The primary outcome was the evaluation of clinical dental implant conditions such as infection, peri-implantitis, dental implant stability, pain, and paresthesia. Secondary outcomes were the evaluation of the augmented bone volume, change rate of augmented bone volume, vertical bone height, and marginal bone loss around dental implant fixture. The conditions of all dental implants were uneventful throughout the follow-up period. Augmented bone volume and changing rate of augmented bone volume were essentially unchanged following maturation of the OCP/Col-derived new bone. The change rate of new bone volume was 21.9% in the simulated approach and 16.8% in the staged approach at 1 year and 5 years postoperatively. The reduction rate in vertical bone height was 7.1% in the simultaneous approach and 7.5% in the staged approach between 1 year and 5 years postoperatively. Mean marginal bone loss was 1.76 mm with the simultaneous approach, and 0.50 mm with the staged approach at 5 years postoperatively. In conclusion, the success of dental implants 5 years after sinus floor augmentation by OCP/Col implantation was clarified by both clinical and radiological evaluations.

Octacalcium phosphate collagen composite for periodontal regeneration in a canine one‐wall intrabony defect

“…The efficacy and safety of OCP/Col in bone regeneration procedures have been well‐documented in clinical studies on sinus floor elevation, alveolar ridge preservation, cysts, and alveolar cleft procedures 22–24 . OCP/Col applied for sinus floor elevation revealed excellent bone formation and stable results of dental implants at 5 years 25 …”

“…[22][23][24] OCP/Col applied for sinus floor elevation revealed excellent bone formation and stable results of dental implants at 5 years. 25 Despite these clinical studies, no study has assessed the efficacy of OCP/Col for the treatment of bony defects associated with periodontitis. 26 This study aimed to assess the clinical effect of periodontal tissue regeneration with OCP/Col for one-wall intrabony defects in dogs.…”

Deep learning‐based automatic segmentation of bone graft material after maxillary sinus augmentation

“…Other studies directly delineated the boundary of graft materials on postoperative CBCTs (Canullo et al, 2023;Favato et al, 2015;Gultekin et al, 2016;Zhang et al, 2019). Subtracting the volumes of the pre-and postoperative maxillary sinus and treating the difference as the volume of graft materials was also adopted in many studies (Alayan & Ivanovski, 2018;Miura et al, 2022). However, abundant manual interventions before final measurement are still inevitable in the aforementioned analysis workflows (Dellavia et al, 2014;Kwon et al, 2019;Mazzocco et al, 2014).…”