Pachimalla Praneeth Raj, Mishra Sunil Kumar, Chowdhary Ramesh
Department of Prosthodontics, Rajarajeswari Dental College and Hospital, Bengaluru, 560074, India.
Department of Prosthodontics, Peoples College of Dental Sciences & Research Centre, Bhopal, 462037, India.
J Oral Biol Craniofac Res. 2020 Apr-Jun;10(2):13-19. doi: 10.1016/j.jobcr.2020.01.005. Epub 2020 Jan 23.
Hydrophilic implant surface has gained increasing interest as a factor to stimulate osseointegration.
The study was done to formulate hydrophilic gel to be applied on to the dental implant surface, to enhance bone to implant contact (BIC).
In first part of study, Acemannan and Moringa oleifera hydro gel formulated in different proportions were coated on the titanium disk and 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assay was done to evaluate cell viability.Cytotoxicity of aqueous extracts of two plants were tested against UMR106 cells. In second part of study, the prototype titanium implants were placed in tibia and femur of 8 male rabbits. Hydrophilic gel formulated from Acemannan and Moringa oleifera were coated on the study groups of implants. Histomorphometric analysis was carried out of the sections specimens. Student's unpaired -test was used to compare mean values between the two groups.
The alkaline phosphatase assay showed least cell inhibition for Acemannan and Moringa oleifera (2:1) as 4.45% and osteoblastic differentiation as 0.328 at 540 nm. Titamium disc coated with hydrogel of Acemannan and Moringa oliefera and seeded with Human MSC shows increased proliferation of osteoblast cells.Compare to study group implants, control group showed no new bone formation.
Hydrophilic implant surface showed new bone formation with increased bone to implant contact.There was absent of degenerative changes, necrotic changes, fibrosis, and inflammation at the new BIC
亲水性种植体表面作为刺激骨结合的一个因素,已引起越来越多的关注。
本研究旨在制备可应用于牙种植体表面的亲水性凝胶,以增强骨与种植体的接触(BIC)。
在研究的第一部分,将不同比例配制的乙酰半乳甘露聚糖和辣木水凝胶涂覆在钛盘上,并进行3-(4,5-二甲基噻唑-2)-2,5-二苯基四氮唑溴盐(MTT)试验以评估细胞活力。测试两种植物水提取物对UMR106细胞的细胞毒性。在研究的第二部分,将原型钛种植体植入8只雄性兔的胫骨和股骨中。将由乙酰半乳甘露聚糖和辣木制成的亲水性凝胶涂覆在种植体研究组上。对切片标本进行组织形态计量分析。采用学生未配对t检验比较两组的平均值。
碱性磷酸酶试验显示乙酰半乳甘露聚糖和辣木(2:1)对细胞的抑制作用最小,在540nm处为4.45%,成骨细胞分化为0.328。涂有乙酰半乳甘露聚糖和辣木水凝胶并接种人骨髓间充质干细胞的钛盘显示成骨细胞增殖增加。与研究组种植体相比,对照组未显示新骨形成。
亲水性种植体表面显示出新骨形成,骨与种植体的接触增加。在新的骨与种植体接触处没有退行性改变、坏死改变、纤维化和炎症。