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Effect of screw access hole or vent hole opening strategies on the adhesive filling rate of oral implant cement-retained posterior crowns

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Listed:
  • Long Li
  • Xiaodong Sun
  • Huangjun Zhou
  • Min Liu
  • Cai Wen

Abstract

Purpose: This study investigated the adhesive filling rate (AFR) of implant prostheses on the abutment shoulder and axial surfaces under various hole opening strategies,and examined the correlation between hole openings and permanent adhesive retention strength. Methods: Implant crowns were divided into five groups: No hole (NH); Occlusal regular hole (ORH: 2.5 mm); Occlusal mini-hole (OMH: 1 mm); Lateral upper mini-hole (LUMH: 1 mm); and Lateral down mini-hole (LDMH: 1 mm). In the AFR experiment, abutments and prostheses were connected with two-color silicone rubber; the coverage of rubber at the inner surface of the prostheses was photographed. Images were analyzed by ImageJ software. In the adhesive retention strength experiment, prostheses and abutments were bonded using permanent resin cement; retention strength was measured using a universal testing machine. Data were analyzed using one-way analysis of variance (ANOVA) or Welch’s ANOVA, followed by Tukey’s honestly significant difference test. Results: Abutment shoulder AFRs were OMH (98.70 ± 0.42%), LDMH (98.40 ± 1.30%), LUMH (97.92 ± 1.33%), NH (93.99 ± 5.45%), and ORH (86.11 ± 4.90%). One-way ANOVA revealed significant difference among groups (p

Suggested Citation

  • Long Li & Xiaodong Sun & Huangjun Zhou & Min Liu & Cai Wen, 2025. "Effect of screw access hole or vent hole opening strategies on the adhesive filling rate of oral implant cement-retained posterior crowns," PLOS ONE, Public Library of Science, vol. 20(5), pages 1-15, May.
    • Handle: RePEc:plo:pone00:0323092
    DOI: 10.1371/journal.pone.0323092
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