Randomized multicenter comparison of two coatings of intramobile cylinder implants in 313 partially edentulous mandibles followed up for 5 years

: Intramobile cylinder (IMZ) implants with either of two coatings, hydroxyapatite (HA) or titanium plasma‐flame (TPF), as distal abutments for combined tooth implant‐supported restorations, were compared in 313 partially edentulous mandibles with respect to postprosthetical failure patterns and comp...

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Bibliographic Details
Published in:Clinical oral implants research 2002-10, Vol.13 (5), p.477-487
Main Authors: Mau, Jochen, Behneke, Alexandra, Behneke, Nikolaus, Fritzemeier, Claus Udo, Gomez-Roman, German, D'Hoedt, Bernd, Spiekermann, Hubertus, Strunz, Volker, Yong, Mei
Format: Article
Language:English
Subjects:
Adult
Alveolar Bone Loss - classification
Biocompatible Materials - chemistry
bone loss
Chi-Square Distribution
Coated Materials, Biocompatible - chemistry
combined tooth implant-supported restoration
complication analysis
Dental Abutments
Dental Implants
Dental Plaque Index
Dental Prosthesis Design
Dental Prosthesis, Implant-Supported
Dental Restoration Failure
Dentistry
Denture, Partial, Fixed
Durapatite - chemistry
Female
Follow-Up Studies
Humans
hydroxyapatite coating
implant
IMZ
integration deficiency
Jaw, Edentulous, Partially - rehabilitation
Jaw, Edentulous, Partially - surgery
Linear Models
Male
Mandible - surgery
Osseointegration
partially edentulous mandible
Periodontal Index
Periodontal Pocket - classification
Proportional Hazards Models
Prospective Studies
randomization
Statistics, Nonparametric
survival analysis
Titanium - chemistry
titanium plasma-flame coating
Treatment Outcome
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Summary:: Intramobile cylinder (IMZ) implants with either of two coatings, hydroxyapatite (HA) or titanium plasma‐flame (TPF), as distal abutments for combined tooth implant‐supported restorations, were compared in 313 partially edentulous mandibles with respect to postprosthetical failure patterns and complication frequencies in a randomized multicenter clinical trial. Within the treatment protocols, the two coatings do not show evidence of different efficacy with respect to occurrence of postprosthetical integration deficiency (ID) or functional deficiency (FD). Statistical equivalence for an absolute effect of ±15% inevent‐free survival could only be demonstrated for FD, not for ID, however. Intent‐to‐treat and per‐protocol population analyses gave consistent results. Hazards of occurrence of ID and FD, adjusted for years of follow‐up, were estimated for ID as 7% per year (95%CI 4‐10% per year) with HA and 5% per year (95%CI 3‐7% per year) with TPF, and for FD as 5% per year (95%CI 3‐7% per year) with HA and 4% per year (95%CI 2‐6% per year) with TPF. The 5‐year cumulative success rates for no ID were 69.5% (95%CI 58‐81%) with HA and 82.2% (95%CI 74‐91%) with TPF. With respect to frequencies of complications, there was no relevant statistically significant difference between the two coatings.
ISSN:0905-7161
1600-0501
DOI:10.1034/j.1600-0501.2002.130506.x