Conférence Ardentis sur le domaine dentaire

À la pointe du progrès

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

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Les publications

  • Multiple diastema closure in periodontally compromised teeth: How to achieve an enamel-like emergence profile

    Saratti C.M., Krejci I., Rocca G.T.

    The Journal of Prosthetic Dentistry

    16(5):642-646 | 2016

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    Multiple diastema closure in periodontally compromised teeth: How to achieve an enamel-like emergence profile

    This article describes a direct composite resin technique for the closure of multiple diastemas. The described procedure allows an anatomic and esthetic emergence profile of the apical third of the tooth to be obtained in periodontally compromised teeth without the use of interproximal wedges.

    The Journal of Prosthetic Dentistry. Published by Elsevier Inc.

    J Prosthet Dent. 2016 Jul 13, 16(5):642-646
    PMID: 27422229
    DOI: 10.1016/j.prosdent.2016.04.022


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  • Short implants placed with or without grafting in atrophic sinuses: the 3-year results of a prospective randomized controlled study

    Nedir R., Nurdin N., Khoury P., Bischof M.

    Clinical Implant Dentistry and Related Research

    18(1):10-18 | 2016

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    Short implants placed with or without grafting in atrophic sinuses: the 3-year results of a prospective randomized controlled study

    Background
    The question whether a minimal maxillary residual bone height (RBH) allows the predictable use of osteotome sinus floor elevation (OSFE) remains unresolved.

    Purpose
    To evaluate the efficacy of short implants placed with OSFE in an RBH of ≤4 mm and to compare bone levels around implants placed with (control) or without (test) grafting after 3 years.

    Materials and Methods
    Eight-millimeter implants were placed by OSFE in sinuses randomized to receive anorganic bovine bone or no grafting material. Healing time before prosthetic rehabilitation was 10 weeks. Peri-implant bone levels were measured on standardized periapical radiographs.

    Results
    Thirty-seven implants (17 test, 20 control) were placed at a mean RBH of 2.4 ± 0.9 mm. Three implants failed during the 3-year follow-up. After 3 years, all implants had gained endosinus bone (test: 4.1 ± 1.0 mm; control: 5.1 ± 1.2 mm; p = .001). Mean bone gain was stable between 1 and 3 years in both groups.

    Conclusions
    Grafting is unnecessary to achieve bone augmentation of 4.1 mm; however, more bone is gained with grafting. Bone gained over 1 year was retained. Atrophic posterior maxillae can be predictably rehabilitated using OSFE and simultaneous placement of 8-mm implants.

    http://onlinelibrary.wiley.com/doi/10.1111/cid.12279/abstract
    http://www.ncbi.nlm.nih.gov/pubmed/25622803


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  • Osteotome sinus floor elevation without grafting: A 10-year prospective study

    Nedir R., Nurdin N., Vazquez L., AbiNajm S., Bischof M.

    Clinical Implant Dentistry and Related Research

    18(3):609-617 | 2016

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    Osteotome sinus floor elevation without grafting: A 10-year prospective study

    Background
    Little is known about the long-term outcome of implants placed in the atrophic maxilla using osteotome sinus floor elevation (OSFE) without grafting.

    Purpose
    The study aims to evaluate the long-term efficiency of the procedure and stability of the peri-implant bone formed following implant placement without grafting into resorbed posterior maxilla.

    Materials and Methods
    Twenty-five implants (≤10 mm in length) were placed in 17 patients using OSFE without grafting. The mean residual bone height was 5.4 ± 2.3 mm. Bone levels were evaluated at 1, 3, 5, and 10 years using periapical radiographs.

    Results
    Fifteen patients (23 implants) participated in the 10-year examination. All implants fulfilled the survival criteria. Following surgery, the implant sites gained endo-sinus bone (mean: 3.0 ± 1.4 mm). The mean crestal bone loss (CBL) was limited to 1.0 ± 0.9 mm. The difference in mean endo-sinus bone gain and CBL was statistically significant between 1 and 10 years, but not between 3 and 5, 3 and 10, and 5 and 10 years.

    Conclusions
    At 10 years, the implant survival rate was 100%. Endo-sinus bone was mainly gained during the first year. This study demonstrates the long-term predictability of OSFE without grafting and simultaneous implant placement.

    Keywords
    atrophic posterior maxilla; bone grafting; long-term study; no grafting; sinus lift; sinus osteotome


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  • The influence of FRCs reinforcement on marginal adaptation of CAD/CAM composite resin endocrowns after simulated fatigue loading

    Rocca G.T., Saratti C.M., Poncet A., Feilzer A.J., Krejci I.

    Odontology

    104(2):220-32 | 2016

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    The influence of FRCs reinforcement on marginal adaptation of CAD/CAM composite resin endocrowns after simulated fatigue loading

    To evaluate the marginal adaptation of endodontically treated molars restored with CAD/CAM composite resin endocrowns either with or without reinforcement by fibre reinforced composites (FRCs), used in different configurations. 32 human endodontically treated molars were cut 2 mm over the CEJ. Two interproximal boxes were created with the margins located 1 mm below the CEJ (distal box) and 1 mm over the CEJ (mesial box). All specimens were divided in four groups (n = 8). The pulp chamber was filled with: group 1 (control), hybrid resin composite (G-aenial Posterior, GC); group 2, as group 1 but covered by 3 meshes of E-glass fibres (EverStick NET, Stick Tech); group 3, FRC resin (EverX Posterior, GC); group 4, as group 3 but covered by 3 meshes of E-glass fibres. The crowns of all teeth were restored with CAD/CAM composite resin endocrowns (LAVA Ultimate, 3M). All specimens were thermo-mechanically loaded in a computer-controlled chewing machine (600,000 cycles, 1.6 Hz, 49 N and simultaneously 1500 thermo-cycles, 60 s, 5-55 °C). Marginal analysis before and after the loading was carried out on epoxy replicas by SEM at 200× magnification. For all the groups, the percentage values of perfect marginal adaptation after loading were always significantly lower than before loading (p < 0.05). The marginal adaptation before and after loading was not significantly different between the experimental groups (p > 0.05). Within the limitations of this in vitro study, the use of FRCs to reinforce the pulp chamber of devitalized molars restored with CAD/CAM composite resin restorations did not significantly influenced their marginal quality.


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  • Short implants placed with or without grafting into atrophic sinuses. The 5-year results of a prospective randomized controlled study.

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

    Clinical Oral Implants Research

    doi: 10.1111/clr.12893 | 2016

    > Voir le résumé

    Short implants placed with or without grafting into atrophic sinuses. The 5-year results of a prospective randomized controlled study.

    OBJECTIVES:
    Over 5 years, (i) to evaluate the clinical efficiency of 8-mm implants placed with osteotome sinus floor elevation (OSFE) in extremely atrophic maxillae and (ii) to compare bone levels around implants placed with and without grafting.

    MATERIAL AND METHODS:
    TE® SLActive® implants (Institut Straumann AG, Basel, Switzerland) were placed in sites with a residual bone height (RBH) of =4 mm. Before surgery, sinuses were randomized to receive anorganic bovine bone (control) or no graft (test). After 10 weeks of healing, implants were functionally loaded with single crowns. Bone levels were measured from standardized peri-apical radiographs.

    RESULTS:
    Thirty-seven (17 test, 20 control) implants were placed in 12 patients (RBH: 2.4 ± 0.9 mm). Two early and one late failures occurred. The success rate was 91.9% (94.1% test, 90.0% control). All implants gained endo-sinus bone (3.8 ± 1.0 mm test, 4.8 ± 1.2 mm control; P = 0.004). Mean crestal bone loss (CBL) was 0.6 ± 1.1 mm, without a significant difference between the groups (P = 0.527). Mean bone gain and CBL did not change significantly between 1 and 5 years (P = 0.249 and P = 0.293, respectively).

    CONCLUSIONS:
    Atrophic posterior maxillae can be predictably rehabilitated using OSFE with a simultaneous implant placement. The new bone formed around implants after 1 year was stable after 5 years, irrespective of the presence or the absence of graft. Grafting was unnecessary to achieve an average bone augmentation of 3.8 mm, but more bone was gained with grafting.

    KEYWORDS:
    atrophic maxilla, bone gain, bone graft, bone regeneration, crestal bone loss, dental implants, internal sinus lift, no grafting, osteotome sinus floor elevation, posterior maxilla, prospective randomized clinical trial, sinus lift


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