Search

Objective: The objective of this study is to evaluate the changes at marginal bone level at implants restored with screw‐retained prosthesis connected directly to the implants or with an intermediate abutment, after 3‐year follow‐up. Material and Methods: Thirty‐six partially edentulous patients received 72 implants. Each patient received 2 implants and a 2–4‐unit screw‐retained implant‐prosthesis. The test group implants received a screw‐retained prosthesis connected directly to the implant shoulder, the control group prosthesis were connected through a 3‐mm standardised intermediate abutment. Clinical and radiological data were recorded at baseline and at 6‐, 12‐, and 36‐month follow‐up. Results: At 36 months, the mean marginal bone loss was 0.13 ± 0.18 mm for the control group and 0.20 ± 0.24 for the test group, with no significant differences between groups (p >.05). Clinical variables (Probing Pocket Depth, Bleeding on Probing and Plaque Index) at 36 months also showed no significant difference between groups. Minor complications frequency was 6.7% in the control group and 5.3% in test group. None of the groups suffered from mayor complications. Patient Reported Outcomes (PROs) showed a General Satisfaction mean score in the control group of 9.40 (SD 0.82) and 9.37 (SD 1.06) in the test group with no significant differences between groups. Conclusions: Bone‐level implants restored with screw‐retained partial prostheses with or without intermediate abutments showed similar radiographic and clinical outcomes after 3 years. [ABSTRACT FROM AUTHOR]

Objective: To compare marginal changes at bone‐level implants restored with screw‐retained implant prosthesis with or without intermediate standardised abutments, after 1 year of follow‐up. Materials and Methods: Thirty‐six partially edentulous patients received 72 implants. Each patient received 2 implants and a 2‐ to 4‐unit screw‐retained implant‐prosthesis. The test group received implants consisting of a screw‐retained prosthesis connected directly to the implant shoulder, while the prostheses in the control group were connected through a 3‐mm standardised intermediate abutment. Clinical and radiological data were recorded at baseline and at 3, 6 and 12 months in follow‐up visits. Results: At 12 months, the marginal bone loss was 0.17 ± 0.24 mm for the test group (19 patients) and 0.09 ± 0.15 mm for the control group (17 patients), with no statistically significant differences (p >.05). The mean probing pocket depth was 2.96 mm ± 0.46 for the test group and 2.86 ± 0.62 mm for the control group. The test and control groups showed bleeding on probing levels of 18.86 ± 14.12% and 13.73 ± 17.66%, respectively. All patients scored below 25% on the plaque index levels. Conclusions: Restoration of bone‐level implants with fixed screw‐retained partial prostheses with or without intermediate abutments presented similar radiographic and clinical outcomes after 1 year. [ABSTRACT FROM AUTHOR]

Objectives: The aim of this study was to comprehensively assess the literature in terms of the effect of peri‐implant mucosal thickness on esthetic outcomes and the efficacy of soft tissue augmentation procedures to increase the mucosal thickness with autogenous grafts or soft tissue substitutes. Material and methods: Two systematic reviews (SR) were performed prior to the consensus meeting to assess the following questions. Review 1, focused question: In systemically healthy patients with an implant‐supported fixed prosthesis, what is the influence of thin as compared to thick peri‐implant mucosa on esthetic outcomes? Review 2, focused question 1: In systemically healthy humans with at least one dental implant (immediate or staged implant), what is the efficacy of connective tissue graft (CTG), as compared to absence of a soft tissue grafting procedure, in terms of gain in peri‐implant soft tissue thickness (STT) reported by randomized controlled clinical trials (RCTs) or controlled clinical trials (CCTs)? Review 2, focused question 2: In systemically healthy humans with at least one dental implant (immediate or staged implant), what is the efficacy of CTG, as compared to soft tissue substitutes, in terms of gain in peri‐implant STT reported by RCTs or CCTs? The outcomes of the two SRs, the consensus statements, the clinical implications, and the research recommendations were discussed and subsequently approved at the consensus meeting during the group and plenary sessions. Conclusions: There was a tendency of superior esthetic outcomes in the presence of a thick mucosa. The connective tissue graft remains the standard of care in terms of increasing mucosa thickness. [ABSTRACT FROM AUTHOR]

Objectives: This study reports the secondary analysis of a randomized-controlled clinical trial designed to assess the efficacy of deproteinized bovine mineral and a collagen membrane in the treatment of intrabony defects. The specific aims of this report are (1) to analyse the radiographic bone changes 1 year after therapy and (2) to assess the association between radiographic defect angle and treatment outcomes. Materials and Methods: Baseline and 12-month radiographs were collected from 120 patients with advanced chronic periodontitis from 10 centres in seven countries as part of a multi-centre clinical trial. All patients had at least one intrabony defect ⩾3 mm in depth. The treatment consisted of simplified or modified papilla preservation flaps to access the defect. After debridement of the area, a deproteinized bovine mineral and a collagen membrane were applied in the test subjects, and omitted in the controls. Main outcome measures were radiographic bone fill and defect resolution 1 year after surgery. Results: One hundred and twenty pairs of radiographs were obtained, of which 110 pairs were measurable (57 tests and 53 controls). One year after treatment, radiographic resolution of the intrabony component was significantly higher in the test group (3.2±1.7 mm) when compared with the controls (1.7±1.9 mm). Multivariate analysis indicated that the treatment and the baseline radiographic depth of the intrabony defect significantly influenced the radiographic bone fill of the intrabony defect 1 year following treatment. The percentage of resolution of the defect was influenced by the treatment provided and the baseline plaque score. The baseline radiographic defect angle did not show a significant impact on the clinical and radiographic outcomes. Conclusions: Regenerative periodontal surgery with a deproteinized bovine bone mineral and a collagen membrane offered additional benefits in terms of radiographic resolution of the intrabony defect and predictability of outcomes with respect to papilla preservation flaps alone. [ABSTRACT FROM AUTHOR]