Trial reportBMC oral health2020
Influence of the implant-abutment connection on the ratio between height and thickness of tissues at the buccal zenith: a randomized controlled trial on 188 implants placed in 104 patients.
Trial report in BMC oral health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Influence of the Implant-Abutment Connection on the Ratio Between Height and Thickness of Tissues at the Buccal Implant Zenith: a Perspective Randomised 3d Comparative Analysis on 188 Implants
Evaluation of Hyaluronic Acid in Addition to Xenograft Material in Treatment Peri-implant Bony Defects in Immediate Implant Placement Within Maxillary Esthetic Zone
Who cites it
4 citing papers in PubMed.
- Intraoral Vestibular Pressure: Quantification and Implications on Gum Trophism.International journal of dentistry · 2026Article
- Can transfer type and implant angulation affect impression accuracy? A 3D in vitro evaluation.Odontology · 2021Article
- Buccal Peri-Implant Soft Tissue Augmentation by Means of a Porcine Collagen Matrix: A Proof of Concept Technical Note.Materials (Basel, Switzerland) · 2020Article
- Deep Neural Networks for Dental Implant System Classification.Biomolecules · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTo compare tissue response to two implant systems, featuring internal hexed connections with different designs.
methodsPatients enrolled in this randomized controlled trial were assigned to two groups. In Group 1, patients were treated with implants with a 5° conical internal hexed connection (Anyridge®, MegaGen, South Korea). In Group 2, patients were treated with implants with an internal hexed connection (Core®, Kristal, Italy). After implant placement and a provisionalisation period of 12 months, impressions were taken, stone casts were poured and digitised with a desktop scanner (D700®, 3Shape, Copenhagen, Denmark). In a digital environment, for each fixture, two values were collected at the buccal zenith: the height of the peri-implant mucosa (mucosal height; MH), calculated from the vestibular shoulder of the implant analogue to the upper gingival margin of the supra-implant tissue; and the width of the peri-implant mucosa (mucosal thickness; MT), calculated from the vestibular shoulder of the analogue to the external mucosa point perpendicular to the implant major axis. The mean and standard deviation for MH and MT, as well as their ratios, were calculated for each group; the sectors in which the implants were placed were also considered. Finally, correlation between MH, MT, connection type and sector was assessed by Pearson's correlation coefficient, with significance level set at 0.05, and a confidence interval (CI) set at 95%.
resultsData deriving from 188 implants placed in 104 patients were evaluated. The mean MH values were 3.32 (± 0.12) and 2.70 (± 0.16) mm for Groups 1 and 2, respectively. The mean MT values were 4.37 (± 0.16) and 3.93 (± 0.18) mm for Groups 1 and 2, respectively. Group 1 showed higher MH and MT values and a better ratio (1.50 ± 0.88) than Group 2 (1.81 ± 1.20). The MH, MT and MH/MT ratio were significantly influenced both by sector (p = 0.015) and group (p = 0.047).
conclusionsWithin the limits of this study, the 5° connection implants supported a more extended tissue height and thickness at the buccal zenith, and a better ratio between them.
trial registrationThis study was retrospectively registered in Clinicaltrials.gov, with number NCT04160689, dated 13/11/2019.
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