Does crown/implant ratio influence the survival and marginal bone level of short single implants in the mandibular molar? A preliminary investigation consisting of 12 patients

Journal of Oral Rehabilitation
L GharianiA Ibrahim

Abstract

Crown/implant (C/I) ratio has been proven to not affect the survival of the implants; however, it is also a fact that no evidence exists with regard to the use of single short implants in the mandibular molar. The aim of this study was to determine whether the crown/implant ratios of single implant-supported fixed restorations on implants of 6-8 mm in the mandibular molar have an impact on the implant survival and marginal bone maintenance. Twelve short dental implants (6-8 mm) were installed and restored with single crowns, loaded after 3 months of healing. The restorations were divided according to crown-to-implant ratio into two groups: Group 1: C/I < 2.0 and Group 2: C/I ≧ 2.0. Alveolar bone loss was measured using CBCT scan, taken at the implant placement and after 12 months follow-up from loading. Reduced implant/crown ratio shown no statistic significant differences on implant survival and the alveolar bone level compared with recommended implant/crown ratio. Within the limitation of this study, it can be concluded that reduced C/I ratio could be used as a substitute for recommended C/I ratio in severely mandibular atrophic residual alveolar ridges.

References

Jun 9, 2005·The Journal of Prosthetic Dentistry·Yoav Grossmann, Avishai Sadan
Jun 16, 2010·The Journal of Oral Implantology·Hardeep BirdiSung-Kiang Chuang
Aug 25, 2012·Journal of Periodontology·Alberto MonjeHom-Lay Wang
Oct 11, 2013·Clinical Implant Dentistry and Related Research·Francesco ZuffettiMassimo Del Fabbro
Jan 22, 2014·Journal of Periodontology·Carlos Garaicoa-PazmiñoHom-Lay Wang
Mar 19, 2014·Implant Dentistry·Alessandro QuarantaMaurizio Procaccini
Jul 22, 2014·Clinical Implant Dentistry and Related Research·Christer SlotteLars-Åke Johansson
Oct 25, 2014·Evidence-based Dentistry·Asim Al-Ansari
Dec 11, 2014·Materials Science & Engineering. C, Materials for Biological Applications·Fellippo Ramos VerriEduardo Piza Pellizzer

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