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Mikrobiologische und klinische Resultate und die Zufriedenheit der Patienten bei 2 Behandlungsvarianten im zahnlosen Unterkiefer nach 10 Jahren in Funktion
Author(s) -
Quirynen Marc,
Alsaadi Ghada,
Pauwels Martine,
Haffajee Anne,
Van Steenberghe Daniel,
Naert Ignace
Publication year - 2005
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/j.1600-0501.2005.01127.x
Subject(s) - dentistry , implant , medicine , radiography , abutment , dental abutments , orthodontics , osseointegration , bleeding on probing , patient satisfaction , surgery , periodontitis , civil engineering , engineering
Background: Long‐term data on microbiological and clinical outcome as well as on patient satisfaction after implant therapy in the edentulous mandible are limited. Especially comparisons between fixed full prostheses (FFPs) and overdentures (ODs), or between anchoring systems for the latter are scarce. Aim: This study aimed to evaluate both of these parameters at the 10‐year follow‐up in a group of fully edentulous patients rehabilitated via an OD or a FFP (the latter to allow inter‐group comparison). Material and methods: A total of 37 fully edentulous patients (25 ODs, 12 FFPs, age at implant installation ranged from 36 to 85 years) participated in this study. All subjects received their implants (Brånemark System ® , Nobel Biocare AB, Gothenburg, Sweden) 10 years previously. For the ODs different attachment systems (bar, magnets, ball) had been applied that allowed a further intra‐group comparison. At the follow‐up visit, 10 years after the abutment insertion, a series of periodontal parameters were recorded, long‐cone radiographs were taken and subgingival plaque samples were collected for analysis using checkerboard DNA–DNA hybridization. The clinical and radiographic data were recorded at abutment connection and after 1 and 10 years. Results: After 10 years of loading, mean plaque and bleeding indices and changes in attachment or marginal bone level were not significantly different, neither between the OD and FFP group, nor within the OD group. The marginal bone loss between abutment connection and year 10 was 0.86 and 0.73 mm for OD and FFP groups, respectively. The subgingival microbiota at implant sites from all (sub)‐groups was comparable, with low numbers of DNA counts (±10 × 10 5 ) but high detection frequencies of Actinobacillus actinomycetemcomitans (>90%), Porphyromonas gingivalis (>85%) and Tannerella forsythensis (30%). The composition of the subgingival microbiota was influenced by probing depth and bleeding tendency. Patient satisfaction was very high for both types of prosthetic rehabilitation. The FFP group scored only slightly better for chewing comfort and general satisfaction. Conclusion: These data indicate that from the clinical and microbiological standpoint, as well as patient satisfaction, both an OD and a FFP offer a favourable long‐term outcome.