Horizontal bone augmentation in the posterior atrophic mandible and dental implant stability using the tenting screw technique

Daniel Farias, Felipe Caceres, Antonio Sanz, Sergio Olate*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The aim of this study was to analyze horizontal bone augmentation using the tenting screw technique in the posterior mandible. Included subjects had a 3-mm bone width and 9-mm bone height, measured by CBCT. After the surgical approach, two to four screws were inserted, leaving 4 mm of extraosseous space; reconstruction was achieved using allogeneic biomaterial and leukocyte- and platelet-rich fibrin together with an absorbable membrane. After 4 months, a new CBCT scan was obtained to compare the bone gain and implant placement. Early and secondary stability were measured by the implant stability quotient (ISQ); prosthetic load was performed 16 weeks later. Student t test was used to compare bone gains and implant stability, with significance set at P < .05. Fourteen subjects and 27 surgical sites initially exhibited a mean bone width of 2.95 ± 0.75 mm. Four months after augmentation, the bone width was 7.15 ± 1.87 mm, confirming a significant bone gain (4.2 ± 1.26 mm). Twenty-seven implants were placed with a minimum insertion torque of 35 Ncm; the primary stability was 69.3 ± 7.16 ISQ, and the secondary stability was 75.9 ± 3.29 ISQ (P > .05). It may be concluded that the tenting screw technique is predictable in terms of bone gain and that it facilitates implant stability.

Original languageEnglish
Pages (from-to)E147-E155
JournalInternational Journal of Periodontics and Restorative Dentistry
Volume41
Issue number4
DOIs
StatePublished - 2021

Bibliographical note

Publisher Copyright:
© 2021 by Quintessence Publishing Co Inc.

Keywords

  • Bone Screws
  • Dental Implants
  • Humans
  • Mandible
  • Torque

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