Bioglass associated with leukocyte-poor platelet-rich plasma in the rabbit maxillary sinus: histomorphometric, densitometric, and fractal analysis.
The objective of the present study was to evaluate the outcomes of autogenous bone graft (AB) and bioglass (BG) associated or not with leukocyte-poor platelet-rich plasma (LP-PRP) in the rabbit maxillary sinus (MS) by histomorphometric and radiographic analysis. Twenty rabbits divided into 2 groups (G1, G2) were submitted to sinus lift surgery. In G1, 10 MS were grafted with AB and 10 MS were grafted with BG. In G2, 10 MS were grafted with AB + LP-PRP and 10 MS were grafted with BG + LP-PRP. After 90 days, the animals were killed and specimens were obtained, x-rayed, and submitted to histomorphometric, radiographic bone density (RD) and fractal dimension analysis. Radiographic bone density mean values (SD), expressed as aluminum equivalent in mm, of AB, BG, AB + LP-PRP, and BG + LP-PRP groups were 1.79 (0.31), 2.04 (0.39), 1.61 (0.28), and 1.53 (0.30), respectively. Significant differences (P < 0.05) were observed between BG and AB, and BG + PRP and BG. Fractal dimension mean values were 1.48 (0.04), 1.35 (0.08), 1.44 (0.04), and 1.44 (0.06), respectively. Significant differences were observed between BG and AB, and AB + LP-PRP and BG. Mean values for the percentage of bone inside MS were 63.30 (8.60), 52.65 (10.41), 55.25 (7.01), and 51.07 (10.25), respectively. No differences were found. No correlations were observed among percentage of bone, RD and FD. Histological analysis showed that MS treated with AB presented mature and new bone formation. The other groups showed minor bone formation. Within the limitations of this study, the results indicated that at a 90-day time end point, AB yielded better results than AB + LP-PRP, BG, and BG + LP-PRP and should be considered the primary material for MS augmentation.
Trindade-Suedam
Ivy Kiemle
IK
Department of Diagnosis and Surgery, Division of Periodontics, Araraquara School of Dentistry, São Paulo State University-UNESP, São Paulo, Brazil. ivytrin@usp.br
de Morais
Juliana Aparecida Najarro Dearo
JA
Faeda
Rafael Silveira
RS
Leite
Fábio Renato Manzolli
FR
Tosoni
Guilherme Monteiro
GM
Neto
Carlos Benatti
CB
Marcantonio
Elcio
E
Scaf
Gulnara
G
D015502:Absorptiometry, Photon; D000818:Animals; D015519:Bone Density; D001861:Bone Regeneration; D018786:Bone Substitutes; D016025:Bone Transplantation; D002516:Ceramics; D007962:Leukocytes / Q000502:physiology; D008297:Male; D008443:Maxillary Sinus / Q000000981:diagnostic imaging / Q000601:surgery*; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods*; D053657:Platelet-Rich Plasma; D011817:Rabbits; D011897:Random Allocation
C022107:Bioglass; D018786:Bone Substitutes