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Use of scanning electron microscope to evaluate the marginal fit of protocol bars obtained through benchtop or intraoral digital scanners
Parizotto, Renês Augusto; Cavalli, Vanessa; Zandoná, Rafael Lacerda; Carvalho, Geraldo Alberto Pinheiro de; Franco, Aline Batista Gonçalves; Ramos, Elimario Venturin; Dias, Sérgio Candido.
Afiliación
  • Parizotto, Renês Augusto; São Leopoldo Mandic Dental School. Campinas. BR
  • Cavalli, Vanessa; University of Campinas. Piracicaba Dental School. Piracicaba. BR
  • Zandoná, Rafael Lacerda; São Leopoldo Mandic Dental School. Campinas. BR
  • Carvalho, Geraldo Alberto Pinheiro de; São Leopoldo Mandic Dental School. Campinas. BR
  • Franco, Aline Batista Gonçalves; São Leopoldo Mandic Dental School. Campinas. BR
  • Ramos, Elimario Venturin; São Leopoldo Mandic Dental School. Campinas. BR
  • Dias, Sérgio Candido; São Leopoldo Mandic Dental School. Campinas. BR
Braz. j. oral sci ; 22: e239079, Jan.-Dec. 2023. ilus
Article en En | LILACS, BBO | ID: biblio-1413365
Biblioteca responsable: BR218.1
ABSTRACT

Aim:

To evaluate the marginal fit of protocol bars milled from digital models obtained by conventional molding followed by bench scanning or digital molding with an intraoral scanner.

Methods:

Four morse-cone implants and the mini-pillars were installed in a 3D printed mandible model (master model). Digital models of the master model were obtained by (n=10) (Group A - Conventional) conventional (analog) molding of the master model followed by bench scanning or (Group B - Digital) molding of the master model with an intraoral scanner. All-on-four protocol bars were designed and milled from the digital models for both groups and screwed into the master model. Scanning electron microscopy (SEM) images from the distal, central, and mesial regions of each implant were obtained and the implant-protocol bar marginal fit was measured in an image software (Image J). The mean misfit of each region was analyzed by two-factor ANOVA, Tukey test, and Student's t-test (0,05 = 0.05).

Results:

The digital approach (B) showed higher misadaptation than the conventional approach (A, p < 0.05), regardless of the region evaluated. In group A, the central region showed higher maladjustment than the mesial region (p<0.05), however, there were no differences among regions of group B (p>0.05).

Conclusion:

The conventional method of acquiring digital models using the bench scanner produced bars for the All-On-Four protocol with better marginal fit than the digital models obtained with an intraoral scanner
Licencia
CC BY - Atribuição

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Texto completo: 1 Colección: 01-internacional Base de datos: BBO / LILACS Asunto principal: Microscopía Electrónica de Rastreo / Implantes Dentales / Diseño Asistido por Computadora Tipo de estudio: Prognostic_studies Idioma: En Revista: Braz. j. oral sci Asunto de la revista: ODONTOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: BBO / LILACS Asunto principal: Microscopía Electrónica de Rastreo / Implantes Dentales / Diseño Asistido por Computadora Tipo de estudio: Prognostic_studies Idioma: En Revista: Braz. j. oral sci Asunto de la revista: ODONTOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil