However, the use of this graft type of the is strictly connected with second operation site, leading to an increase of infection risk, creation the defect and thus mechanical disturbance at the harvest site. Due to this, autografts have limited availability and use of them is related with relatively high-cost what together strictly limits their use. For the alternative treatment, the use of bone allograft (isolated from donor of the same species) or xenograft (isolated from different animals are considered as suitable alternative to autograft3. Yet, the use of those grafts is related with the increased risk of immune conflicts or transmission of the animal-derived diseases to the patient as well as with the high price4.
To overcome all the undesirable risks related with mentioned bone graft options, the use of alloplastic material has become more popular for the past recent years. This bone-like material is synthesized in fully controlled conditions in order to achieve a material that resemble the natural bone from physical and chemical perspective4. Thus, alloplastic bone graft is an inorganic, biocompatible, biotolerant, bioactive, and osteoconductive bone graft substitute5. Additionally, alloplastic bone grafts are biologically stable (they resorb slowly with no negative impact of bone cells) with volume maintenance, allowing cell infiltration and remodeling6. Additionally, alloplastic bone graft material due to its origin is known as a fully biosafe with no possibility to transmit any diseases or pathogens to the patient.
Data show that the composition of the alloplastic bone substitute material which brings the most beneficial outcomes for bone regeneration is based on hydroxyapatite (HAp) and β-tricalcium phosphate (β-TCP), which will mimic the inorganic part of the natural bone. Biomimetic bone substitute materials with such compositions are biocompatible and exhibit characteristics that enable new bone formation along their surfaces and within their pores7. The two-phase composition ensures biostability by estimating the balance between the rate of material resorption and long-term mechanical support of the regeneration site8. Some additional substances combined within the structure can provide supplementary features. The occurrence of chitosan in product composition improves the adhesion of bone substitute material to bone tissue, besides that it has bacteriostatic and anti-inflammatory properties9,10. Eventually, the proper structure of the alloplastic material and the appropriate size of the pores guarantee the osteoconductivity of the material and allow the bone tissue to overgrow the implant.
Taking into consideration that alloplastic bone substitute material is created to mimic as much as possible the natural structure of the bone tissue, with established properties that ensure the safety of this product and induce osteoconductivity, this material is characterized as a significant solution for bone regeneration.
- Lee MJ, Kim BO, Yu SJ. Clinical evaluation of a biphasic calcium phosphate grafting material in the treatment of human periodontal intrabony defects. J Periodontal Implant Sci. 2012;42(4):127. doi:10.5051/jpis.2012.42.4.127
- Dahlin C, Johansson A. Iliac Crest Autogenous Bone Graft versus Alloplastic Graft and Guided Bone Regeneration in the Reconstruction of Atrophic Maxillae: A 5-Year Retrospective Study on Cost-Effectiveness and Clinical Outcome: Reconstruction of Atrophic Maxillae. Clinical Implant Dentistry and Related Research. 2011;13(4):305-310. doi:10.1111/j.1708-8208.2009.00221.x
- Camargo PM, Lekovic V, Weinlaender M, et al. A controlled re-entry study on the effectiveness of bovine porous bone mineral used in combination with a collagen membrane of porcine origin in the treatment of intrabony defects in humans: Bovine bone mineral and porcine collagen membrane in intrabony defects. Journal of Clinical Periodontology. Eppley BL, Pietrzak WS, Blanton MW. Allograft and Alloplastic Bone Substitutes: A Review of Science and Technology For the Craniomaxillofacial Surgeon. Journal of Craniofacial Surgery. 2005;16(6):981-989. doi:10.1097/01.scs.0000179662.38172.dd
- Fukuba S, Okada M, Nohara K, Iwata T. Alloplastic Bone Substitutes for Periodontal and Bone Regeneration in Dentistry: Current Status and Prospects. Materials. 2021;14(5):1096. doi:10.3390/ma14051096
- Hsu Y, Wang H. How to Select Replacement Grafts for Various Periodontal and Implant Indications. Clin Adv Periodontics. 2013;3(3):167-179. doi:10.1902/cap.2012.120031
- Rojbani H, Nyan M, Ohya K, Kasugai S. Evaluation of the osteoconductivity of α-tricalcium phosphate, β-tricalcium phosphate, and hydroxyapatite combined with or without simvastatin in rat calvarial defect. J Biomed Mater Res. 2011;98A(4):488-498. doi:10.1002/jbm.a.33117
- Ghanaati S, Barbeck M, Detsch R, et al. The chemical composition of synthetic bone substitutes influences tissue reactions in vivo : histological and histomorphometrical analysis of the cellular inflammatory response to hydroxyapatite, beta-tricalcium phosphate and biphasic calcium phosphate ceramics. Biomed Mater. 2012;7(1):015005. doi:10.1088/1748-6041/7/1/015005
- Goy RC, Britto DD, Assis OBG. A review of the antimicrobial activity of chitosan. Polímeros. 2009;19(3):241-247. doi:10.1590/S0104-14282009000300013
- Sumy State University, Ukraine, Pogorielov MV, Sikora VZ. Chitosan as a Hemostatic Agent: Current State. European Journal of Medicine Series B. 2015;2(1):24-33. doi:10.13187/ejm.s.b.2015.2.24