Accuracy of implant impression using a multifunctional guide in the All-on-Four treatment concept

Autor(es)

Juliano de Alencar Vasconcelos ^[1] ; Sabrina Maria Castanharo ^[2] ; Monica Estefania Tinajero Aroni ^[3] ; Raphael Ferreira de Souza Bezerra Araújo ^[4] ; Maria Silvia Mauricio Rigolin ^[5] ; Lucas Portela Oliveira ^[6] ; Francisco de Assis Mollo Júnior ^[7]

Afiliação do(s) autor(es)

^[1] São Paulo State University (UNESP). School of Dentistry. Department of Dental Materials and Prosthodontics - Brasil

^[2] São Paulo State University (UNESP). School of Dentistry. Department of Dental Materials and Prosthodontics - Brasil

^[3] São Paulo State University (UNESP). School of Dentistry. Department of Dental Materials and Prosthodontics - Brasil

^[4] São Paulo State University (UNESP). School of Dentistry. Department of Dental Materials and Prosthodontics - Brasil

^[5] São Paulo State University (UNESP). School of Dentistry. Department of Dental Materials and Prosthodontics - Brasil

^[6] São Paulo State University (UNESP). School of Dentistry. Department of Dental Materials and Prosthodontics - Brasil

^[7] São Paulo State University (UNESP). School of Dentistry. Department of Dental Materials and Prosthodontics - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Revista Cubana de Estomatología; v. 57, n. 4 2020-09-04.

Resumo

ABSTRACT Introduction: The passivity of prosthetic components is one of the most important prerequisites in oral implant rehabilitation for maintenance of osseointegration. Objective: Thus, the present study analyzed in vitro the accuracy of different molding techniques in prosthetic rehabilitation on angled implants installed in an anatomical model of a metallic edentulous maxilla. Methods: Laboratory experiment study. A reference metal model of an edentulous maxilla was used. A metal framework was used for the misadaptation assessment. Three groups (n= 10) were compared and impressions were made with vinyl-polysiloxane and casts were obtained with type IV stone: (1) Impression with a metallic open-tray without splinted transfers; (2) Impression with a metallic open-tray and metal splinted transfers; (3) Impression with a multifunctional guide and metal splinted transfers. Misadaptation was assessed with the aid of a stereomicroscope and measuring software. Data were submitted to ANOVA with Welch correction and the Games-Howell post-hoc test with the significance set at 5 %. Results: Misadaptation (µm) was 110,23 ± 30,94, 37,53 ± 3,92, and 37,69 ± 2,79 for the the groups. Statistically significant differences between impression with a metallic open-tray with and without splinted transfers were observed (p < 0,001). No significant differences between the other types of impression. Conclusions: Impression with a metallic open-tray without splinted transfers and with a multifunctional guide splinted with metal transfers were the most precise methods resulting in higher accuracy in transferred implants. (AU)

• Processo FAPESP: 11/07177-8 - Precisão das técnicas de moldagem para implantes angulados em maxila
• Beneficiário: Juliano de Alencar Vasconcelos
• Modalidade de apoio: Bolsas no Brasil - Doutorado