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Effect of bone loss on the fracture resistance of narrow dental implants after implantoplasty. An in vitro study

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Effect of bone loss on the fracture resistance of narrow dental implants after implantoplasty. An in vitro study

dc.contributor.author	Leitão-Almeida, Bruno	es
dc.contributor.author	Camps Font, Octavi	es
dc.contributor.author	Correia, André	es
dc.contributor.author	Mir Mari, Javier	es
dc.contributor.author	Figueiredo, Rui	es
dc.contributor.author	Valmaseda Castellón, E.	es
dc.date.accessioned	2023-06-16T08:36:43Z
dc.date.available	2023-06-16T08:36:43Z
dc.date.issued	2021	es
dc.identifier.citation	Leitão-Almeida, B., Camps-Font, O., Correia, A., Mir-Mari, J., Figueiredo, R., & Valmaseda-Castellón, E. (2021). Effect of bone loss on the fracture resistance of narrow dental implants after implantoplasty. An in vitro study. En Medicina Oral Patología Oral y Cirugia Bucal (pp. e611-e618). Medicina Oral, S.L. https://doi.org/10.4317/medoral.24624	es
dc.identifier.uri	https://hdl.handle.net/10550/88066
dc.description.abstract	Implantoplasty (IP) involves polishing of the exposed surface of implants affected by peri-implantitis (PI). A study was made to determine whether the degree of bone loss influences the fracture resistance of implants with or without IP. An in vitro study was carried out on 32 narrow (3.5 mm) dental implants with a rough surface and external hexagonal connection. Implantoplasty was performed in half of the implants of the sample. Both the IP and control implants were divided into two subgroups according to the amount of bone loss (3 mm or 7.5 mm). Standardized radiographic assessment of implant width was performed using specific software. The main outcome variable was the maximum compression force (Fmax) of implants when subjected to static resistance to fracture tests. Implant fractures were subsequently analyzed by scanning electron microscopy. A descriptive and bivariate analysis of the data was performed. Significant changes in implant width were observed after IP (p<0.05). No significant differences between IP and control implants were recorded in terms of the Fmax values in the two bone loss subgroups (3 mm: control 854.37N 195.08 vs. IP 752.12N 186.13; p=0.302, and 7.5 mm: control 548.82N 80.02 vs. IP 593.69N 111.07; p=0.370). Greater bone loss was associated to a decrease in Fmax, which proved significant for the control implants (p=0.001). Fractures were more frequently located in the platform (n=13). Implants with more apical bone levels appear to be more susceptible to fracture. On the other hand, IP does not seem to significantly decrease the fracture resistance of narrow (3.5 mm) platform dental implants with external hexagonal connections. The fact that most fractures occur in the platform area indicates that the latter is exposed to more mechanical stress.	es
dc.subject	cancer	es
dc.subject	oral metastases	es
dc.subject	incidence	es
dc.subject	jaw bone	es
dc.subject	soft tissue	es
dc.title	Effect of bone loss on the fracture resistance of narrow dental implants after implantoplasty. An in vitro study	es
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO:CIENCIAS MÉDICAS	es
dc.identifier.doi	10.4317/medoral.24624	es
dc.type.hasVersion	VoR	es_ES
dc.identifier.url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8412446/