Please use this identifier to cite or link to this item: https://hdl.handle.net/11000/29194

Biomechanical evaluation of abutment stability in morse taper implant connections in different times: A retrospective clinical study compared with an in vitro analysis


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Title:
Biomechanical evaluation of abutment stability in morse taper implant connections in different times: A retrospective clinical study compared with an in vitro analysis
Authors:
Gehrke, Sergio  
Castro Cortellari, Guillermo
De Aza, Piedad  
Cavalcanti de Lima, José Henrique
Prados Frutos, Juan Carlos  
Department:
Departamentos de la UMH::Ciencia de Materiales, Óptica y Tecnología Electrónica
Issue Date:
2023-04
URI:
https://hdl.handle.net/11000/29194
Abstract:
Micromotion between a dental implant and abutment can adversely affect clinical performance and compromise successful osseointegration by creating a bacterial harbor, enabling screw loosening, and imparting disruptive lateral forces on the cortical bone. Thus, the aim of the present study was to measure the abutment stability evolution using resonance frequency analysis (RFA) in vivo at four different times (baseline, 3, 4, and 12 months), and compare these data obtained with the RFA measured after mechanical cycling (in vitro) corresponding to the proposed times in numbers of cycles. Methods To evaluate the abutment stability, RFA was performed in 70 sets of implant/abutment (IA) with a total of 54 patients (31 women, 23 men). These IA sets were divided into three groups, according to the abutment angulation: straight abutment (Abt1 group), 17-degree angled abutment (Abt2 group), and 30-degree angled abutment (Abt3 group). Abutment stability was measured immediately at implant placement and the abutment installation (T1), 3 (T2), 4 (T3), and 12 months (T4) later. For the in vitro analysis, ten sets of each group were submitted to mechanical cycling: T1 = 0 cycles, T2 = 90,000 cycles, T3 = 120,000 cycles, and T4 = 360,000 cycles. All data collected were statistically evaluated using the GraphPad Prism 5.01 software, with the level of significance was α = 0.05. Results In vivo, the overall data of implant stability quotient (ISQ) values obtained for all groups in each evaluation time were 61.5 ± 3.94 (95% CI: [60–63]) at T1, 62.8 ± 3.73 (95% CI, [61–64]) at T2, 63.4 ± 3.08 (95% CI: [61–64]) at T3, and 65.5 ± 4.33 (95% CI: [63–68]) at T4. Whereas in vitro, the ISQ were 61.5 ± 2.66 (95% CI: [59–63]) at T1, 63.2 ± 3.02 (95% CI, [61–65]) at T2, 63.9 ± 2.55 (95% CI: [62–66]) at T3, and 66.5 ± 2.97 (95% CI: [64–68]) at T4. In both evaluations (in vivo and in vitro), the data showed a significant difference (ANOVA test with p < 0.0001). The RFA to measure the abutment stability used in this study showed that there was a progressive increase in stability among the predetermined times for the measurements, in both analysis (in vivo and in vitro). Furthermore, the values at each time point were similar, with no statistical difference between them
Keywords/Subjects:
Abutment stability
Abutment micromotion
Resonance frequency analysis
Mechanical fatig
Clinical retrospective study
Knowledge area:
CDU: Ciencias aplicadas: Ingeniería. Tecnología
Type of document:
application/pdf
Access rights:
info:eu-repo/semantics/openAccess
DOI:
https://doi.org/10.1016/j.heliyon.2023.e15312
Appears in Collections:
Artículos CIENCIA DE LOS MATERIALES ÓPTICA Y TECNOLOGÍA ELECTRÓNICA



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