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Rationale for a reverse tapered body shift implant for immediate placement.

V Christiaens1, J Pitman2, M Glibert1

  • 1Faculty of Medicine and Health Sciences, Dental School, Department of Periodontology and Oral Implantology, Ghent University, Ghent, Belgium.

International Journal of Oral and Maxillofacial Surgery
|May 7, 2020
PubMed
Summary

Reverse tapered body shift (RTBS) implants demonstrate superior primary stability for immediate dental implant placement. This enhanced stability and adequate buccal gap size may improve outcomes, warranting further clinical investigation.

Keywords:
Dental implantsImmediate dental implant loadingImmediate implant placementImplant designOral surgical proceduresPrimary stability

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Area of Science:

  • Dental Implantology
  • Biomaterials Science
  • Surgical Anatomy

Background:

  • Immediate implant placement is valuable but relies heavily on primary implant stability.
  • Assessing novel implant designs for immediate placement is crucial for predictable clinical outcomes.

Purpose of the Study:

  • To evaluate the primary stability, volumetric viability, and buccal gap of reverse tapered body shift (RTBS) implants after immediate placement.
  • To compare the insertion torque of two RTBS implant designs against conventionally tapered implants.
  • To assess the proximity of RTBS implants to adjacent structures in human cadavers.

Main Methods:

  • Insertion torque was measured for two RTBS designs and conventional implants in simulated extraction sockets using synthetic bone blocks.
  • Buccal gap distance and proximity to anatomical structures were evaluated for RTBS implants in human cadaveric premaxillae.

Main Results:

  • RTBS implants exhibited significantly higher insertion torque (RTBS-1: 35.36±2.74 N•cm; RTBS-2: 48.20±2.90 N•cm) compared to conventional implants (12.00±1.40 N•cm) (P<0.01).
  • The average buccal gap for both RTBS designs was 2.8mm.
  • Implant placement was appropriate in most cadaveric sites, with only one unsuitable locus due to proximity to neighboring teeth.

Conclusions:

  • RTBS implants demonstrate enhanced primary stability, potentially facilitating immediate implant placement.
  • The observed buccal gap size with RTBS implants may support optimal healing and bone regeneration.
  • Further clinical trials are recommended to validate these findings in human subjects.