À la pointe du progrès

Depuis 1997, de nombreux articles ont été publiés dans des journaux scientifiques internationaux à politique éditoriale.

Accès par date

 

Les publications

  • Osteotome sinus floor elevation without grafting: A 10-year study of cone-beam computerized tomography versus periapical X-rays.

    El Hage M., Nurdin N., Abi Najm S., Bischof M., Nedir R.

    The International Journal of Periodontics and Restorative Dentistry

    Accepté | 2018

    > Voir le résumé

    Osteotome sinus floor elevation without grafting: A 10-year study of cone-beam computerized tomography versus periapical X-rays.


    ardentis.ch
  • Restoration of severely damaged endodontically treated premolars: The influence of the endo-core length on marginal integrity and fatigue resistance of lithium disilicate CAD-CAM ceramic endocrowns

    Rocca G.T., Daher R., Saratti C.M., Sedlacek R., Suchy T., Feilzer A.J., Krejci I.

    Journal of Dentistry

    68:41-50 | 2018

    > Voir le résumé

    Restoration of severely damaged endodontically treated premolars: The influence of the endo-core length on marginal integrity and fatigue resistance of lithium disilicate CAD-CAM ceramic endocrowns

    Objectives
    To explore fatigue limits of ceramic endocrowns for premolars.

    Methods
    Forty-eight devitalized premolars were cut at the CEJ. They were restored with standardized CAD–CAM lithium disilicate reinforced ceramic restorations (IPS e.max CAD, Ivoclar-Vivadent) and divided into four Groups (n = 12): overlays (Group A, no endo-core, negative control), endocrowns with an endo-core of 2 mm (Group B), 4 mm (Group C) and crowns with post and core (Group D, positive control). All specimens were first submitted to thermo-mechanical cyclic loading (TCML)(1.7 Hz, 49 N, 600000 cycles, 1500 thermo-cycles). Margins were analysed before and after the loading. Survived specimens were then submitted to cyclic isometric stepwise loading (5 Hz, 200N to 1200N) until completion of 105000 cycles or failure. In case of fracture, fragments were analysed using SEM and failure mode was determined. Results of stepwise loading were statistically analysed by Kaplan–Meier life survival analysis and log rank test (p = 0.05).

    Results
    All the specimens survived the TCML test except four specimens of Group A (early restorations' debonding). No difference in percentages of closed margins was found between endocrowns (Groups B, C) and crowns (Group D). After the stepwise test, differences in survival within the groups were not statistically significant. Most of restorations experienced non-reparable fracture.

    Conclusions
    Endocrowns with both 2-mm and 4-mm long endo-cores displayed outcomes after fatigue equivalent to classical crowns. Results of this study discourage the use of flat overlays with only adhesive retention.

    Clinical significance
    When restoring extremely destroyed devitalized premolars, adhesive strategies should be coupled to a macro-mechanical retention in the root.

    Keywords
    Endocrown; CAD-CAM; Lithium disilicate; Endodontically treated; Fatigue; Endo-core; Marginal integrity


    ardentis.ch

    > En savoir plus

  • Osteotome sinus floor elevation without grafting: A 10-year clinical and cone-beam sinus assessment.

    Abi Najm S., Nurdin N., EL Hage M., Bischof M., Nedir R.

    Implant Dentistry

    Accepté | 2018

    > Voir le résumé

    Osteotome sinus floor elevation without grafting: A 10-year clinical and cone-beam sinus assessment.


    ardentis.ch