Archive : Volume - 7, Issue - 7, Month - July
1 Histological and immunohistochemical analysis of a nanobiomaterial in a maxillary sinus lift surgery: A case report
- Igor Da Silva Brum* ,
- João Carlos Amorim Lopes ,
- Saulo Henrique Salviano ,
- Consuelo Antunes Barreto Lins ,
- Renan Lana Devita ,
- Jorge José De Carvalho ,
- Gustavo Vicentis De Oliveira Fernandes
- Abstract
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- Journal DOI : 10.46624/bjmhr.2020.v7.i7.002
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Abstract : Objective: the objective of this study was to histologically and immunologically analyze the level of bone substitution and the presence of new blood vessels in a nanobiomaterial composed of hydroxyapatite and BTCP in a maxillary sinus lift surgery. Methods: A case of a maxillary sinus lift was investigated. The patient had a 1.0 mm bone remnant on the left side and 2 grams of nanobiomaterial (80% hydroxyapatite and 20% β-tricalcium phosphate) were grafted into the pneumatized sinus. After 6 months, during dental implant placement surgery, grafted bone samples were collected with 4 mm trephines. These samples were sent to the laboratory for analysis where they were stained with masson's trichrome and immunostained with osteonectin and osteopontin. Results: after 6 months of bone regeneration a result of 14 mm of bone gain was reached, the analyzes in masson's trichrome showed an excellent gain of newly formed bone, in addition to a very high percentage of blood vessels. In the immunostaining, a very large number of osteoblasts and osteoclasts was observed, signaling an excellent osteoconductive and osteoinductive potential of the studied nanobiomaterial. Conclusions: the maxillary sinus lift surgery with nanobiomaterial provided a very favorable bone height and thickness gain, as well as the high vascularity and cellularity, which enabled the patient's oral rehabilitation with osseointegrated dental implants and permanent ceramic prostheses.
Keyword : Bone graft; Dental implants; Maxillary sinus lift surgery; hydroxyapatite
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