Marginal bone levels at single tooth implants with a conical fixture design. The influence of surface macro‐ and microstructure
Identifieur interne : 009936 ( Main/Exploration ); précédent : 009935; suivant : 009937Marginal bone levels at single tooth implants with a conical fixture design. The influence of surface macro‐ and microstructure
Auteurs : Michael R. Norton [Royaume-Uni]Source :
- Clinical Oral Implants Research [ 0905-7161 ] ; 1998-04.
Abstract
The concept of a conical implant design to accommodate single tooth replacement, has previously been shown to result in excessive bone loss, around the machined titanium conical collar, usually down to the 1st thread. This unusually aggressive loss of bone was shown to occur within a short period of time, post loading, with greater than 3 mm of bone loss occurring within the 1st 6 months to 1 year. The influence of implant design, surface texture and microleakage have all been highlighted as a potential cause. A modification of the surface structure, both at the macroscopic and microscopic level, as well as an altered fixture‐abutment interface design has resulted in the maintenance of marginal bone around a single tooth titanium implant with a similar conical design. The radiographic follow‐up of 33 implants loaded for up to 4 years, has revealed, by comparison, a most favourable maintenance of marginal bone around the conical collar, with a mean marginal bone loss of 0.32 mm mesially and 0.34 mm distally for the whole group. The cumulative mean marginal bone loss mesially and distally is 0.42 mm and 0.40 mm from 1 to 2 years, 0.54 mm and 0.43 mm from 2 to 3 years, 0.51 mm and 0.24 mm from 3 to 4 years, and 0.62 mm and 0.60 mm for implants past their 4 year recall.
Url:
DOI: 10.1034/j.1600-0501.1998.090204.x
Affiliations:
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