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One-piece versus two-piece zirconia abutment supported single implant crown in the esthetic region: 3-Year results from a split-mouth randomized controlled clinical trial.
Lv, Xiaolei; Pu, Yiping; Zhang, Xiaomeng; Jiang, Xue; Zhang, Xiao; Shi, Junyu; Lai, Hongchang.
Afiliación
  • Lv X; Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
  • Pu Y; Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
  • Zhang X; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Research Unit of Oral and Maxillo-facial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China.
  • Jiang X; Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
  • Zhang X; Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
  • Shi J; Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
  • Lai H; Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
Clin Oral Implants Res ; 34(12): 1330-1341, 2023 Dec.
Article en En | MEDLINE | ID: mdl-37655630
OBJECTIVES: To compare the clinical, radiographic, and immunological outcomes between one-piece versus two-piece zirconia abutments supported single implant crowns in the esthetic region. MATERIALS AND METHODS: The study followed a split-mouth, double-blind, and randomized controlled clinical design for a duration of 3 years. Twenty-two eligible patients with 44 implants were randomly assigned to two groups: Group 1 (one-piece zirconia abutment with zirconia base, n = 22) and Group 2 (two-piece zirconia abutment with titanium base, n = 22). The primary outcome was the technical complication rate. Additionally, survival rates, cytokines concentrations in peri-implant crevicular fluid (PICF), peri-implant conditions, marginal bone loss, and pink/white esthetics score (PES/WES) were assessed as secondary outcomes. RESULTS: Twelve of 22 patients attended the 1-year follow-up (due to the COVID pandemic), and 19 patients attended the 3-year examination. Two abutments in Group 1 were fractured after 10 and 12 months in function. Additionally, one screw loosening occurred in Group 1 at 1-year follow-up. The 3-year technical complication rate was significantly higher in Group 1 than that in Group 2 (15.79% vs. 0%, p < .001). The 3-year implant survival rate was 100% in both groups. The concentration of IFN-γ in PICF was significantly upregulated in Group 2 (p = .018). Furthermore, the IL-6 concentration was positively correlated with BOP% (p = .020). CONCLUSIONS: Two-piece zirconia abutments exhibited superior technical performance compared to one-piece designs during a 3-year follow-up in the anterior region. However, further long-term research is necessary to verify the immunological stability of two-piece zirconia abutments.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Implantes Dentales / Implantes Dentales de Diente Único Tipo de estudio: Clinical_trials Límite: Humans Idioma: En Revista: Clin Oral Implants Res Asunto de la revista: ODONTOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Dinamarca

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Implantes Dentales / Implantes Dentales de Diente Único Tipo de estudio: Clinical_trials Límite: Humans Idioma: En Revista: Clin Oral Implants Res Asunto de la revista: ODONTOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Dinamarca