RT Journal Article
T1 Influence of the use of transepithelial abutments vs. titanium base abutments on microgap formation at the dental implant–abutment interface: an in vitro study
A1 Cascos, Rocio
A1 Celemín Viñuela, María Del Pilar Alicia
A1 Mory Rubiños, Nataly
A1 Gómez Polo, Cristina
A1 Ortega, Rocio
A1 Agustín Panadero, Ruben
A1 Gómez Polo, Miguel Ángel
AB This in vitro study aimed to assess the presence of microgaps at the implant-abutment interface in monolithic zirconia partial implant-supported fixed prostheses on transepithelial abutments versus Ti-base abutments.Methods: Sixty conical connection dental implants were divided into two groups (n = 30). The control group consisted of three-unit bridge monolithic zirconia connected to two implants by a transepithelial abutment. The test group consisted of monolithic zirconia three-unit restoration connected to two implants directly by a titanium base (Ti-base) abutment. The sample was subjected to thermocycling (10,000 cycles at 5 degrees C to 55 degrees C, dwelling time 50 s) and chewing simulation (300,000 cycles, under 200 N at frequencies of 2 Hz, at a 30 degrees angle). The microgap was evaluated at six points (mesiobuccal, buccal, distobuccal, mesiolingual, lingual, and distolingual) of each implant-abutment interface by using a scanning electron microscope (SEM). The data were analyzed using the Mann-Whitney U tests (p > 0.05).Results: The SEM analysis showed a smaller microgap at the implant-abutment interface in the control group (0.270 mu m) than in the test group (3.902 mu m). Statistically significant differences were observed between both groups (p < 0.05).Conclusions: The use or not of transepithelial abutments affects the microgap size. The transepithelial abutments group presented lower microgap values at the interface with the implant than the Ti-base group in monolithic zirconia partial implant-supported fixed prostheses. However, both groups had microgap values within the clinically acceptable range.
PB MDPI
YR 2023
FD 2023-10-01
LK https://hdl.handle.net/20.500.14352/103638
UL https://hdl.handle.net/20.500.14352/103638
LA eng
NO Cascos R, Celemín-Viñuela A, Mory-Rubiños N, Gómez-Polo C, Ortega R, Agustín-Panadero R, Gómez-Polo M. Influence of the Use of Transepithelial Abutments vs. Titanium Base Abutments on Microgap Formation at the Dental Implant–Abutment Interface: An In Vitro Study. Materials. 2023; 16(19):6532
NO 2023 Descuentos MDPI
NO Sociedad Española de Prótesis Estomatológica y Estética
DS Docta Complutense
RD 6 oct 2024