Person:
Gómez Polo, Miguel Ángel

Profile Picture
First Name
Miguel Ángel
Last Name
Gómez Polo
URI
https://hdl.handle.net/20.500.14352/79776
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Odontología
Department
Odontología Conservadora y Prótesis
Area
Estomatología
Identifiers
UCM identifierORCIDScopus Author IDDialnet ID

Filters

2022 - 20232
Reset filters

Settings

Author: Celemín Viñuela, María Del Pilar Alicia × Subject: 616.314-089.28 ×

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    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) Cascos, Rocio; Celemín Viñuela, María Del Pilar Alicia; Mory Rubiños, Nataly; Gómez Polo, Cristina; Ortega, Rocio; Agustín Panadero, Ruben; Gómez Polo, Miguel Ángel
    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.
  • Thumbnail Image
    Item
    Outcome measurements and quality of randomized controlled clinical trials of tooth-supported fixed dental prostheses: A systematic review and qualitative analysis
    (The Journal of Prosthetic Dentistry, 2022) Limones, Álvaro; Celemín Viñuela, María Del Pilar Alicia; Romeo Rubio, Marta; Castillo De Oyague, Raquel; Gómez Polo, Miguel Ángel; Martínez Vázquez De Parga, Juan Antonio
    Abstract Statement of problem The lack of consensus regarding a standardized set of outcome measurements and noncompliance with current reporting guidelines in clinical trials of tooth-supported fixed dental prostheses (FDPs) hamper interstudy comparability, compromise scientific evidence, and waste research effort and resources in prosthetic dentistry. Purpose The primary objective of this systematic review was to identify all primary and secondary outcome measurements assessed in randomized controlled trials (RCTs) of tooth-supported FDPs. Secondary objectives were to assess their methodological quality by using the Cochrane Collaboration's risk of bias tool (RoB, v2.0) and their reporting quality by means of a standardized 16-item CONSORT assessment tool through published reports. Material and methods An electronic search was conducted in MEDLINE, EMBASE, and Cochrane library to identify all RCT-related articles published in the past 10 years. Differences in RoB were tested with the Pearson chi-square test, and those in CONSORT score with the Student t test. Results A total of 64 RCTs from 79 publications were deemed eligible. The diversity of outcome measures used in the field is apparent. Twenty percent of the included studies had a low RoB, 79% showed some concerns, and 1% had a high RoB. The mean ±standard deviation CONSORT compliance score was 22.56 ±3.17. Trials adhered to the CONSORT statement reported lower RoB than those that did not adhere (P<.001). RCTs with a low RoB reported more comprehensive adherence to CONSORT guidelines than those with some concerns (MD 4 [95% CI 1.52-6.48]; P=.004). Conclusions A standardized core outcome reporting set in clinical research on tooth-supported FDPs remains evident. Adherence to the CONSORT statement continues to be low, with some RoB concerns that can be improved. Clinical Implications Adherence to the CONSORT statement when reporting a clinical trial of tooth-supported FDPs has been proven to reduce the risk of bias.