J Periodontal Implant Sci.  2023 Apr;53(2):157-169. 10.5051/jpis.2202760138.

The impact of polydeoxyribonucleotide on early bone formation in lateralwindow sinus floor elevation with simultaneous implant placement

• Lee D
• Lee J
• Koo KT
• Seol YJ
• Lee YM

• KMID: 2557183
• DOI: http://doi.org/10.5051/jpis.2202760138

Abstract

Purpose
The aim of this study was to evaluate the impact of polydeoxyribonucleotide (PDRN) on histologic outcomes when implant placement and lateral sinus floor elevation are performed simultaneously.
Methods
Three bimaxillary premolars (P2, P3, and P4) were extracted from 4 beagle dogs 2 months before lateral sinus floor elevation. After lateral elevation of the sinus membrane, each sinus was allocated to either the test or control group. Sinuses underwent either 1) collagenated synthetic bone graft with PDRN following lateral sinus floor elevation (test group) or 2) collagenated synthetic bone graft without PDRN after lateral sinus floor elevation (control group). Eight weeks after the surgical procedure, all animals were euthanised for a histologic and histomorphometric assessment. Augmented height (AH), protruding height (PH), and bone-to-implant contact in pristine (BIC p ) and augmented (BIC a ) bone were measured. The composition of the augmented area, which was divided into 3 areas of interest located in coronal, middle and apical areas (AOI_C, AOI_M, and AOI_A), was calculated with 3 parameters: the area percentage of new bone (pNB), residual bone graft particle (pRBP), and fibrovascular connective tissue (pFVT).
Results
AH, PH, BIC p , BIC a total, BIC a coronal, and BIC a middle values were not significantly different between sinuses in the control and test groups (all P>0.05). The BIC a apical of sinuses in the test group (76.7%±9.3%) showed statistically higher values than those of sinuses in the control group (55.6%±22.1%) (P=0.038). pNB, pRBP, and pFVT showed statistically significant differences between the 2 groups in AOI_A (P=0.038, P=0.028, and P=0.007, respectively). pNB, pRBP, and pFVT in AOI_C and AOI_M were not significantly different between samples in the control and test groups (all P>0.05).
Conclusions
The histologic findings revealed that lateral sinus floor elevation with PDRN might improve early new bone formation and enable higher bone-to-implant contact.

Keyword

Bone regeneration; Bone substitutes; Osteogenesis; Polydeoxyribonucleotide; Sinus floor augmentation