Dental implant thread design and the consequences on long-term marginal bone loss

Zeev Ormianer*, Shlomo Matalon, Jonathan Block, Jerry Kohen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Aim: The aim of this study was to present the implant macrostructure effect on marginal bone loss using 3 dental implant thread designs with differences in thread pitch, lead, and helix angle. All implants used were sourced from the same company and had the same microstructured surface. Materials and Methods: This is a nonrandomized, retrospective, double-blind study. Data were collected by an independent Tel Aviv University group from a general practitioner's private practice patient records. In total, 1361 implants met the inclusion criteria representing the 3 types of implants macrostructure. Results: Overall survival rate was 96.3% with 50 implants failing (3.7%) out of a total of 1361 implants. Survival rates for the 3 groups were: group A 96.6%, group B 95.9%, and in group C 100%. Average bone loss for groups A, B, and C were 2.02 (±1.70) mm, 2.10 (±1.73) mm, and 1.90 (±1.40) mm, respectively. Pairwise comparisons revealed that less bone loss occurred in group A compared with group B (P = 0.036). Conclusion: Favorable longterm bone loss results were found in implants with a larger pitch, deeper apical threads, and a narrower implant core. One-piece V-thread design implants demonstrated 100% survival rate.

Original languageEnglish
Pages (from-to)471-477
Number of pages7
JournalImplant Dentistry
Issue number4
StatePublished - 26 Jul 2016


  • Bone loss
  • Double thread
  • Implant thread design
  • V-thread


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