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Removable partial dentures retained by hybrid CAD/CAM cobalt-chrome double crowns: 1-year results from a prospective clinical study: CAD/CAM cobalt-chrome double crowns: 1-year results

Herpel, Christopher ; Springer, Antonia ; Puschkin, Galmunkh ; Zimmermann, Lukas ; Stober, Thomas ; Rammelsberg, Peter ; Schwindling, Franz Sebastian

Journal of dentistry, 2021-12, Vol.115, p.103847-103847 [Periódico revisado por pares]

England: Elsevier Limited

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  • Título:
    Removable partial dentures retained by hybrid CAD/CAM cobalt-chrome double crowns: 1-year results from a prospective clinical study: CAD/CAM cobalt-chrome double crowns: 1-year results
  • Autor: Herpel, Christopher ; Springer, Antonia ; Puschkin, Galmunkh ; Zimmermann, Lukas ; Stober, Thomas ; Rammelsberg, Peter ; Schwindling, Franz Sebastian
  • Assuntos: Aged ; CAD ; CAD/CAM ; CAM ; Clinical trials ; Cobalt ; Computer aided design ; Computer aided manufacturing ; Connectors ; Crowns ; Dental materials ; Dental Prosthesis Design - methods ; Dentistry ; Denture, Partial, Removable ; Dentures ; Digitization ; Female ; Fractures ; Gypsum ; Humans ; Jaw ; Laboratories ; Male ; Manufacturers ; Patients ; Production methods ; Prospective Studies ; Prostheses ; Prosthodontics ; Software ; Survival ; Teeth
  • É parte de: Journal of dentistry, 2021-12, Vol.115, p.103847-103847
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
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  • Descrição: Computer-aided design and manufacturing (CAD/CAM) has been successfully used to replace conventional steps in the fabrication of double crowns, creating hybrid-workflows that might facilitate the wider application of these restorations in the future. However, in-vivo data are still lacking. A prospective clinical trial was designed in which 20 patients (median age = 69 years; n women = 10) with 73 abutment teeth who needed a double-crown-retained removable partial denture (RPD) were consecutively recruited. While most of the work steps were done conventionally, gypsum models were digitized with a laboratory scanner to allow CAD/CAM fabrication of primary crowns and secondary structures. DentalDesigner software (3Shape) was used in combination with milling unit PrograMillPM7 and Co-Cr- blanks (Ivoclar-vivadent). Connectors were milled from wax, transferred to Co-Cr using lost-wax technique and bonded to the secondary crowns. Clinical follow-ups were scheduled 6 and 12 months after prosthesis insertion. Outcome parameters were complication-free survival of RPDs and abutment teeth after one year. After 12 months, complication-free survival was 74% and 91% for the RPDs and abutment teeth, respectively. Complications comprised decementations (n = 5), abutment tooth fractures (n = 2), fracture of denture teeth (n = 1), and loss of abutment teeth (n = 1). These complications were easily manageable, resulting in 1-year survival of 100% for CAD/CAM RPDs. First data on short-term complication rates of CAD/CAM double-crown-retained RPDs appear promising. To gather further evidence, prospective clinical trials over a longer follow-up time and with larger patient groups are required. Hybrid CAD/CAM double-crown retained RPDs showed a successful clinical application after one year of follow-up. Further research is needed to evaluate their performance in comparison to conventional manufacturing methods.
  • Editor: England: Elsevier Limited
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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