title: Marginal Fit Metal-Ceramic and In-Ceram Single Crown Cement retained in Implant-supported Abutments.
abstract: BACKGROUND
  This study evaluated the cervical fit of cemented metal-ceramic and In-Ceram implant-supported crowns, before and after the cementing procedure.
  
  
  METHODS
  Twenty crowns cemented on implant abutments are divided into two groups (n = 10): Group 1 -cemented metal-ceramic crowns and group 2 - cemented In-Ceram crowns. The marginal adaptations before and after cementation were evaluated in a comparison microscope with an error of 1 μm. All crowns were cemented with zinc phosphate cement.
  
  
  RESULTS
  The cervical misalignment of cemented crowns before cementation (52.65 ± 11.83 and 85.73 ± 14.06 μm) was lower than that after cementation (66.80 ± 15.86 and 89.36 ± 22.66 μm).
  
  
  CONCLUSIONS
  The cementing procedure interferes with the marginal fit of cemented crowns on implant abutments, with the prosthesis having better adaptation before cementation. Cemented metal-ceramic crowns exhibited better cervical adaptation than In-Ceram crowns cemented before and after the cementing procedure.
  
  
  CONCLUSIONS
  The maintenance of gum health and the longevity of prosthetic restorations are closely related to the restoration's marginal integrity.
authors.affiliation: Department of Prosthodontics and Restorative Dentistry Federal University of Piaui (UFPI), Teresina, Piaui, Brazil.
authors.forename: Valdimar S
authors.initials: VS
authors.lastname: Valente
authors.affiliation: Department of Postgraduation, São Leopoldo Mandic University Campinas, São Paulo, Brazil.
authors.forename: Carlos E
authors.initials: CE
authors.lastname: Francischone
authors.affiliation: Department of Prosthodontics and Restorative Dentistry Federal University of Piaui (UFPI), Teresina, Piaui, Brazil.
authors.forename: C D
authors.initials: CD
authors.lastname: Vilarinho Soares de Moura
authors.affiliation: Postgraduate Program of Sagrado Cora'ção University, Bauru São Paulo, Brazil.
authors.forename: C E
authors.initials: CE
authors.lastname: Francischone
authors.affiliation: Department of Prosthodontics and Restorative Dentistry Federal University of Ceará (UFC), Fortaleza, Ceará, Brazil.
authors.forename: Antonio M
authors.initials: AM
authors.lastname: Silva
authors.affiliation: Postgraduate Department, CEUMA University, São Luis Maranhão, Brazil.
authors.forename: Izabella S
authors.initials: IS
authors.lastname: Ribeiro
authors.affiliation: Postgraduate Department, CEUMA University, São Luis Maranhão, Brazil.
authors.forename: E M Maia
authors.initials: EM
authors.lastname: Filho
authors.affiliation: Postgraduate Department, CEUMA University, São Luis Maranhão, Brazil.
authors.forename: Matheus C
authors.initials: MC
authors.lastname: Bandéca
authors.affiliation: Postgraduate Department, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
authors.forename: Mateus R
authors.initials: MR
authors.lastname: Tonetto
authors.affiliation: Postgraduate Department, CEUMA University, São Luis Maranhão, Brazil Phone: +5598988283948, e-mail: rudysd@uol.com.br.
authors.forename: R R
authors.initials: RR
authors.lastname: de Jesus Tavarez
mesh_terms: D000537:Aluminum Oxide; D002484:Cementation / Q000379:methods*; D003442:Crowns; D003738:Dental Cements; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D006801:Humans; D016876:Metal Ceramic Alloys
chemical_list: D003738:Dental Cements; D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; C070870:In-Ceram; D000537:Aluminum Oxide
keywords: Cementation; Marginal adaptation Protheses and implants.